Upload man1_merged.jsonl

man1_merged.jsonl

@@ -0,0 +1,526 @@
+{"question": "What is the importance of fully understanding the content of the MAINTENANCE MANUAL HCN-6800 before operating the machine?", "answer": "To ensure proper operation and prevent serious personal injury or material damage."}
+{"question": "What should be done if any questions arise regarding the machine operation?", "answer": "Ask the nearest Technical Center or Technology Center."}
+{"question": "Why is it essential to observe safety precautions described in the manual and on the machine and equipment?", "answer": "To prevent serious personal injury or material damage."}
+{"question": "What should be done if safety plates on the machine and equipment are missing?", "answer": "Replace them as soon as possible."}
+{"question": "Are modifications allowed that affect operation safety?", "answer": "No, modifications that affect operation safety are not allowed."}
+{"question": "Why should all safety features such as covers, doors, etc. be in place before operation?", "answer": "To ensure safe operation of the machine and equipment."}
+{"question": "Where should the maintenance manual be kept?", "answer": "Near the machinery for immediate use."}
+{"question": "How often should the machine be inspected and maintained?", "answer": "Regularly, following the schedule outlined in the maintenance manual."}
+{"question": "What are the general contents of the regular inspection section in the maintenance manual?", "answer": "Generation, table of inspection and maintenance items, daily inspection and maintenance, and checking oil levels and pressures."}
+{"question": "What is the purpose of the table of inspection and maintenance items?", "answer": "To outline the items that require regular inspection and maintenance."}
+{"question": "What should be checked daily inside the machine?", "answer": "Items specified in the daily inspection and maintenance schedule."}
+{"question": "Why is it essential to check oil levels during regular inspection and maintenance?", "answer": "To ensure proper machine operation and prevent damage."}
+{"question": "What should be done if hydraulic and air pressures are not within the recommended range?", "answer": "Adjust them to the recommended range to ensure proper machine operation and prevent damage."}
+{"question": "What is the purpose of Section 4-3-5 in the CNC maintenance manual?", "answer": "Changing or replenishing oils"}
+{"question": "What is the focus of Section 4-3-6 in the CNC maintenance manual?", "answer": "Around the machine"}
+{"question": "What is the frequency of inspection and maintenance described in Section 4-4?", "answer": "Weekly"}
+{"question": "What is the task described in Section 4-4-1 of the CNC maintenance manual?", "answer": "Around the machine"}
+{"question": "How often should the tasks in Section 4-5 be performed?", "answer": "Monthly"}
+{"question": "What is the focus of Section 4-5-2 in the CNC maintenance manual?", "answer": "Around the machine"}
+{"question": "What is the focus of Section 4-7-2 in the CNC maintenance manual?", "answer": "Around the machine"}
+{"question": "How often should the tasks in Section 4-8 be performed?", "answer": "Every One-Year"}
+{"question": "What is the purpose of the biennial inspection and maintenance on a CNC machine?", "answer": "The biennial inspection and maintenance are performed to ensure the machine is in good working condition and to prevent accidents."}
+{"question": "What should be done before stopping the CNC machine for a long time?", "answer": "Inspection and maintenance should be performed before stopping the machine for a long time to ensure its proper functioning when restarted."}
+{"question": "What is the first step to take when troubleshooting a CNC machine problem?", "answer": "Identify the source of the trouble and locate the problem area."}
+{"question": "How often should the CNC machine's major units be maintained?", "answer": "The CNC machine's major units should be maintained regularly to prevent breakdowns and ensure optimal performance."}
+{"question": "What is the GRAPHIC MAINTENANCE screen used for in CNC machine troubleshooting?", "answer": "The GRAPHIC MAINTENANCE screen is used to troubleshoot and maintain the CNC machine graphically."}
+{"question": "What is the primary cause of spindle overheating in a CNC machine?", "answer": "The primary cause of spindle overheating is often due to inadequate lubrication or coolant flow."}
+{"question": "What should be inspected on the X-axis, Y-axis, and Z-axis of a CNC machine during maintenance?", "answer": "The X-axis, Y-axis, and Z-axis should be inspected for proper alignment, lubrication, and wear during maintenance."}
+{"question": "What is the purpose of the ATC magazine in a CNC machine?", "answer": "The ATC magazine is used for automatic tool change in CNC machines."}
+{"question": "Where can you find the construction details of the axis drive systems in the CNC manual?", "answer": "The construction details of the axis drive systems can be found in section 5-8 of the manual."}
+{"question": "What should you do if the CNC machine's hydraulic system is experiencing issues?", "answer": "Refer to the troubleshooting section 5-7-1 for hydraulic system issues."}
+{"question": "What is the function of the pneumatic system in a CNC machine?", "answer": "The pneumatic system is used for various machine functions, refer to section 5-8 for details."}
+{"question": "How do you troubleshoot issues with the pallet changer in a CNC machine?", "answer": "Refer to section 5-6-1 for troubleshooting pallet changer issues."}
+{"question": "What maintenance tasks are required for the hydraulic system in a CNC machine?", "answer": "Section 5-7-2 provides details on the maintenance of the hydraulic system."}
+{"question": "What is the purpose of the centralized lubrication unit in a CNC machine?", "answer": "The centralized lubrication unit is used to lubricate various machine components."}
+{"question": "Where can you find the construction details of the table in the CNC manual?", "answer": "The construction details of the table can be found in section 5-5-2 of the manual."}
+{"question": "What should you do if the CNC machine's spindle overheating alarm appears?", "answer": "Stop the spindle immediately, check the lubrication system, verify coolant flow, and ensure there is no overloading of the cutting tool."}
+{"question": "What is the purpose of section 5-9-1 in the CNC manual?", "answer": "Troubleshooting"}
+{"question": "What is the primary focus of section 5-9-2 in the CNC manual?", "answer": "Maintenance of the centralized lubrication unit"}
+{"question": "What is the main topic of discussion in section 5-9-3 of the CNC manual?", "answer": "Linear guide and ball screw lubrication"}
+{"question": "What is the primary concern in section 5-9-4 of the CNC manual?", "answer": "Spindle bearing lubrication"}
+{"question": "What is the purpose of the Spindle Cooling Unit section in the CNC manual?", "answer": "To provide information on the spindle cooling unit"}
+{"question": "What type of information can be found in section 5-10-1 of the CNC manual?", "answer": "Troubleshooting for the spindle cooling unit"}
+{"question": "What is the purpose of the Coolant System section in the CNC manual?", "answer": "To provide information on the coolant system"}
+{"question": "What can be found in section 5-11-3 of the CNC manual?", "answer": "Coolant circuit diagram"}
+{"question": "What is the purpose of the Covers section in the CNC manual?", "answer": "To provide information on the machine covers"}
+{"question": "What is the primary focus of section 5-12-2 in the CNC manual?", "answer": "Machine covers"}
+{"question": "What is the purpose of the NC Unit and Electrical Control Cabinet section in the CNC manual?", "answer": "To provide information on the NC unit and electrical control cabinet"}
+{"question": "What is the purpose of the chapter on Cleaning the NC screen?", "answer": "The purpose is to provide guidelines on cleaning the NC screen of a CNC machine."}
+{"question": "What is the function of the Tool Length Measuring Unit?", "answer": "The Tool Length Measuring Unit is an optional feature that measures the length of a tool on a CNC machine."}
+{"question": "What are the steps to take when troubleshooting the Tool Length Measuring Unit?", "answer": "Refer to the troubleshooting section in the manual, page 5-46."}
+{"question": "How do you maintain the Tool Length Measuring Unit?", "answer": "Regular maintenance of the Tool Length Measuring Unit is outlined on page 5-47 of the manual."}
+{"question": "What is the purpose of replacing the LED light in a CNC machine?", "answer": "Replacing the LED light ensures proper machine operation and visibility, as outlined on page 5-49 of the manual."}
+{"question": "Why is it necessary to replace the batteries of the amplifiers in a CNC machine?", "answer": "Replacing the batteries of the amplifiers ensures proper machine operation and prevents interruptions, as outlined on page 5-51 of the manual."}
+{"question": "What precautions should be taken when installing a CNC machine?", "answer": "Precautions on installing the machine are outlined on page 6-1 of the manual, including environmental and power source requirements."}
+{"question": "What are the environmental requirements for installing a CNC machine?", "answer": "The environmental requirements for installing a CNC machine are outlined on page 6-1 of the manual."}
+{"question": "What are the external power source requirements for installing a CNC machine?", "answer": "The external power source requirements for installing a CNC machine are outlined on page 6-3 of the manual."}
+{"question": "What are the air source requirements for installing a CNC machine?", "answer": "The air source requirements for installing a CNC machine are outlined on page 6-7 of the manual."}
+{"question": "What items should be confirmed when carrying a CNC machine?", "answer": "Items to be confirmed when carrying the machine are outlined on page 6-8 of the manual."}
+{"question": "What is the purpose of foundation work when installing a CNC machine?", "answer": "Foundation work is necessary to ensure a stable installation, as outlined on page 6-9 of the manual."}
+{"question": "What is the intended use of the HCN-6800 machine?", "answer": "The HCN-6800 is a horizontal machining center that provides high economic efficiency and high productivity, suitable for machining a wide variety of workpieces in small to medium-sized quantities."}
+{"question": "What is the normal operating position of the machine?", "answer": "The normal operating position of the machine is in the range shown in Figure 1-1."}
+{"question": "What is the rapid traverse rate of the machine?", "answer": "The rapid traverse rate of the machine is 60 m/min (2362 IPM)."}
+{"question": "How long is the automatic tool change time of the machine?", "answer": "The automatic tool change time of the machine is 4.2 seconds (chip-to-chip)."}
+{"question": "What is the maximum speed of the high-speed and high-power spindle?", "answer": "The maximum speed of the high-speed and high-power spindle is 10000 min-1."}
+{"question": "What is the motor output of the high-speed and high-power spindle?", "answer": "The motor output of the high-speed and high-power spindle is 37/30 kW (30 min./cont.)."}
+{"question": "What is the maximum torque of the high-speed and high-power spindle?", "answer": "The maximum torque of the high-speed and high-power spindle is 586 N·m (432.2 ft·lbf)."}
+{"question": "What are the features of the 8000 min-1 specifications?", "answer": "The 8000 min-1 specifications offer high-torque, high-speed, and heavy-duty cutting spindles with a maximum speed of 8000 min-1, motor output of 37/30 kW (30 min./cont.), and maximum torque."}
+{"question": "How do you perform a test run on the machine?", "answer": "Before starting the test run, check the machine, perform an electric inspection, check the parameter settings, check the machine in manual operation, and break in operation."}
+{"question": "Why is it important to check the machine before starting the test run?", "answer": "It is important to check the machine before starting the test run to ensure safe and proper operation."}
+{"question": "What is included in the list of sensors, limit switches, and oiling points?", "answer": "The list of sensors, limit switches, and oiling points includes a list of oiling points and a list of sensors and limit switches."}
+{"question": "What is the maximum torque of the 6000 min-1 specifications?", "answer": "1413 N·m (1042.2 ft·lbf)"}
+{"question": "What is the purpose of through-spindle coolant in CNC machining?", "answer": "It enables accurate hole machining at high speed and allows synchronized tapping even in high spindle speed range."}
+{"question": "What is the positioning time reduction achieved by the adoption of low-inertia servomotors and high-speed ball screws?", "answer": "Positioning time can be reduced even in short-distance positioning."}
+{"question": "What is the maximum speed of the 16000 min-1 specifications?", "answer": "16000 min-1"}
+{"question": "How does the CNC machine achieve high-accuracy in machining?", "answer": "It uses FEM analysis, column traverse construction, taper cone couplings, and linear guides to maintain consistent high accuracy over the long term."}
+{"question": "What is the bi-directional positioning accuracy of the linear guides?", "answer": "0.015 mm (0.0006 in)"}
+{"question": "What is the main purpose of the Operating manual?", "answer": "It covers all aspects of operation."}
+{"question": "What should the operator do before operating the machine?", "answer": "Read the instruction manual carefully and understand the contents thoroughly."}
+{"question": "What does the 'DANGER' symbol indicate in the safety precautions?", "answer": "Failure to follow these instructions could result in loss of life."}
+{"question": "What is the potential harm of removing the maintenance covers while the power is ON?", "answer": "Serious personal injury or death, or damage to the machine"}
+{"question": "Why should you not operate a switch while wearing gloves?", "answer": "Erroneous operation may occur"}
+{"question": "What should you do before entering the machine for maintenance and repair?", "answer": "Turn the power OFF and place a tag bearing 'WORKING IN THE MACHINE. DO NOT TURN POWER ON' on the operating panel"}
+{"question": "Why is it essential to turn the power OFF during chip disposing work?", "answer": "To prevent serious personal injury by being entangled in the machine"}
+{"question": "What is the risk of touching chips directly with bare hands?", "answer": "Hand laceration"}
+{"question": "Why should you never put your body beneath the chip disposing opening?", "answer": "To avoid injury due to chips falling from the chip conveyor"}
+{"question": "What should you do if coolant or fluid is spilled on the floor?", "answer": "Wipe it off completely to prevent serious personal injury by slipping and falling"}
+{"question": "What is the risk of using a tool or insert exceeding the specification?", "answer": "Serious personal injury from tool failure"}
+{"question": "Why is it essential to use a tool and insert within the specification range?", "answer": "To prevent serious personal injury from tool failure"}
+{"question": "What should you do with an excessively worn tool?", "answer": "Replace it to prevent serious personal injury from tool failure"}
+{"question": "What is the primary function of the M06 command in CNC programming?", "answer": "The M06 command is used for automatic tool change in CNC machines."}
+{"question": "What type of personal injury can occur if a cutting tool is not handled safely?", "answer": "Stab wounds due to handling of a cutting tool. Always wear protective gloves when handling cutting tools."}
+{"question": "What should be done to ensure that tool attribute information is registered correctly?", "answer": "Enter 'heavy tool' and 'large tool' attributes correctly after carefully checking the tool to be used."}
+{"question": "What should be done if a machine is not at a complete stop during cleaning?", "answer": "Check that the machine is at a completely stop. Personal injury by getting caught in moving machine parts can occur."}
+{"question": "Why is it important to use protective goggles when removing chips?", "answer": "To prevent serious personal injury to the eye from flying chips during chip removal."}
+{"question": "What should be done if high-voltage terminals are present on the electrical control cabinet?", "answer": "DO NOT touch any of them under any circumstances, as they pose a high-voltage danger."}
+{"question": "What should be done before switching on the power?", "answer": "Make sure that all doors and safety covers are fitted before switching on the power."}
+{"question": "Why is it important to memorize the position of the EMERGENCY STOP button?", "answer": "So that you can press it immediately from any position in case of an emergency."}
+{"question": "What should be done when taking a break from work and leaving the machine?", "answer": "Always switch off the main power switch on the operating panel and the main power disconnect switch."}
+{"question": "What should be done if there is a power failure?", "answer": "Switch off the main power disconnect switch immediately."}
+{"question": "Why is it important to tie back long hair when operating a CNC machine?", "answer": "To prevent long hair from becoming entangled in drive mechanisms."}
+{"question": "What type of shoes should be worn when operating a CNC machine?", "answer": "Safety shoes with steel toe caps and oil-resistant soles should be worn."}
+{"question": "Why is it important to wear a protective mask when machining magnesium alloys?", "answer": "To protect yourself from the hazards of machining magnesium alloys."}
+{"question": "What should be done to ensure safe machine operation?", "answer": "Always follow safety guidelines and precautions, such as using protective equipment, ensuring proper machine setup, and avoiding loose clothing or entanglement hazards."}
+{"question": "What is the importance of checking electrical cables for damage?", "answer": "To prevent accidents due to current leakage or electric shock."}
+{"question": "Why should operators not handle coolant with bare hands?", "answer": "Because coolant can cause irritation, and operators with allergies should take special precautions."}
+{"question": "What should be done during violent thunderstorms?", "answer": "Do not operate the machine."}
+{"question": "How should safety covers be maintained?", "answer": "Check the safety covers regularly to ensure they are properly fitted and not damaged, and repair or replace any damaged covers immediately."}
+{"question": "What should be done when handling loads beyond one's capacity?", "answer": "Always obtain assistance."}
+{"question": "What should be done if the machine door, cover, or other glass sections are found to be damaged?", "answer": "Immediately stop the machine and replace the damaged sections."}
+{"question": "Why should fork lifts or cranes not be operated without officially approved training?", "answer": "To prevent accidents and ensure safe operation."}
+{"question": "What should be done when using fork lifts or cranes?", "answer": "Make sure there are no obstructions in the vicinity of these machines."}
+{"question": "What type of wire rope or slings should be used for lifting?", "answer": "A standard suitable for the load to be supported."}
+{"question": "When should the position of the coolant nozzle be adjusted?", "answer": "After the machine has come to a complete stop."}
+{"question": "Why should safety devices such as stop dogs, limit switches, or interlocks not be removed or interfered with?", "answer": "To prevent accidents and ensure safe operation."}
+{"question": "Why should safety covers not be removed during machine operation?", "answer": "To prevent accidents and ensure safe operation."}
+{"question": "How should chips be cleaned off the tool tip?", "answer": "Using gloves and a brush, never with bare hands."}
+{"question": "What should be done before mounting or removing a tool?", "answer": "Stop all machine operations."}
+{"question": "How should slings, chains, hoists, and other lifting gear be maintained?", "answer": "Check for defects before use and repair or replace defective gear immediately."}
+{"question": "What should be considered when operating medical electrical devices near the NC machine tool?", "answer": "Electromagnetic waves are radiated from the NC machine tool, so consult the manufacturer and physician to determine if operations are safe."}
+{"question": "Why is it important to write a program for the warming-up operation?", "answer": "To execute the functions of the full range of machine components and to pay meticulous attention to the warming-up operation, especially at spindle speeds above 4000 min-1."}
+{"question": "What should be done during heavy-duty cutting?", "answer": "Do not allow chips to accumulate, as they can be hot and start a fire."}
+{"question": "How should the spindle and axis motion mechanisms be warmed up?", "answer": "Operate the machine in automatic mode for 10-20 minutes at maximum spindle speed or 1/3 to 1/2 maximum axis motion speed."}
+{"question": "Why should operating panel switches not be operated while wearing gloves?", "answer": "To prevent incorrect operation or mistakes."}
+{"question": "What should be done after completing a series of operations?", "answer": "Switch off the power supply to the NC unit, the main power disconnect switch of the machine, and the factory power supply."}
+{"question": "What should be considered when handling workpieces and tooling?", "answer": "Always use suitable tools and conform to machine specifications, observe restrictions on mass of tool insert and tool diameter."}
+{"question": "How should the workpiece be mounted?", "answer": "Securely, to prevent detachment during machining."}
+{"question": "What should be done with badly worn tools?", "answer": "Replace them promptly to prevent accidents and injuries."}
+{"question": "How should tools be mounted in the machine?", "answer": "Make sure the tool and its stud bolt are properly secured."}
+{"question": "What should be considered when rotating cutting tools?", "answer": "Do not rotate at speeds higher than the rated speed, and check maximum safe operating speeds with the manufacturer."}
+{"question": "How should fingers be protected during workpiece holding?", "answer": "Be careful not to catch fingers in workpiece holding devices."}
+{"question": "What should be considered when lifting heavy fixtures and workpieces?", "answer": "Always use the correct lifting gear."}
+{"question": "How should cutting tools be arranged in the tool magazine?", "answer": "Correctly, in accordance with the tool data set in the TOOL LAYOUT screen."}
+{"question": "What should be checked during maintenance?", "answer": "Make sure the machine is switched off, and check for residual voltage and discharge capacitors."}
+{"question": "Who should perform maintenance of electrical equipment?", "answer": "Qualified licensed electrical engineers only."}
+{"question": "What should be done when carrying out maintenance in high places?", "answer": "Use a suitable ladder or service platform, and always wear a helmet."}
+{"question": "How should maintenance areas be kept?", "answer": "Clean and tidy at all times, with water or oil spills wiped up immediately."}
+{"question": "What should be used as replacement or consumable parts?", "answer": "Specified and standardized parts to maintain the as-shipped machine specifications."}
+{"question": "What is the importance of checking the rating of a new fuse when replacing it in a CNC machine?", "answer": "Using a fuse with too high a rating could result in damage to the equipment."}
+{"question": "Why is it necessary to follow the instructions on the instruction plate concerning lubrication and oil change intervals?", "answer": "To ensure proper machine operation and prevent damage to the equipment."}
+{"question": "What should you do before cleaning the machine or the surrounding area?", "answer": "Stop all machine operation."}
+{"question": "How should substances with adverse environmental effects from CNC machine tools be disposed of?", "answer": "Dispose of them in accordance with the laws of the country concerned, entrusting the processing to a contractor who deals with industrial waste."}
+{"question": "What should be done immediately in case of water or oil spills on the floor?", "answer": "Remove the spills and dry the floor to prevent accidents."}
+{"question": "Why is it important to provide sufficient lighting in the work area?", "answer": "To ensure a safe working environment."}
+{"question": "What should you never do on top of the headstock, turret, or covers?", "answer": "Place tools or other potentially dangerous objects."}
+{"question": "What is the importance of checking the normal cross-sectional area of the power supply cable?", "answer": "To ensure a stable power supply for machine operation at maximum output."}
+{"question": "How should cables on the floor be protected?", "answer": "Protect them from being damaged by chips to prevent short-circuiting."}
+{"question": "What precaution should be taken before working on the chip conveyor?", "answer": "Make sure the chip conveyor is in a complete stop state with power supply shut off."}
+{"question": "What should you never do while the chip conveyor is operating?", "answer": "Touch or extend your hands into any part of the chip conveyor."}
+{"question": "Why should you not put your hands or body under the chip discharge part?", "answer": "To avoid injuries caused by chips from the chip conveyor."}
+{"question": "What should never be canceled in a CNC machine?", "answer": "Safety devices."}
+{"question": "What could happen if you fail to observe the safety devices?", "answer": "Serious harm to a human life or body."}
+{"question": "What should you confirm before using cutting conditions recommended by the NC?", "answer": "Every necessary precaution in regards to safe machine setup, especially for workpiece fixturing/clamping and tool setup."}
+{"question": "Why is it important to confirm that the machine door is securely closed before starting machining?", "answer": "To prevent serious injury or death."}
+{"question": "What is the purpose of safety nameplates on a CNC machine?", "answer": "To prevent accidents by warning operators of potential hazards."}
+{"question": "What should operators and related personnel do with the safety nameplates?", "answer": "Fully memorize and understand the precautions to strictly follow them without reading or referring to the nameplates each time an operation is performed."}
+{"question": "What is the function of the operator's door interlock?", "answer": "The operator's door interlock prevents the door from being opened during automatic operation, and allows it to be opened only when the machine is stopped."}
+{"question": "What should be done to open the operator's door?", "answer": "Press the door unlock button while the machine is stopped."}
+{"question": "What is the maximum axis feed and spindle rotation speed when the operator's door is open?", "answer": "Axis feed: 2 m/min (79 IPM), Spindle rotation: 50 min-1."}
+{"question": "What happens when the emergency stop button is pressed?", "answer": "The machine stops in the emergency stop state, independent of the selected operation mode (automatic, manual)."}
+{"question": "What is the purpose of the safety plates on the machine?", "answer": "To provide important safety information to operators during operation."}
+{"question": "What should be done if a safety plate is damaged or lost?", "answer": "Order a replacement plate using the part number stamped on the plate, and replace the existing one with the new one."}
+{"question": "What is the function of the spindle on the machine?", "answer": "The spindle is driven by an AC inverter motor and is used to clamp a cutting tool, which is then used for machining."}
+{"question": "How is the spindle cooled on the machine?", "answer": "Cooling fluid is circulated around the spindle outer casing to minimize temperature rise due to heat generation from the bearings."}
+{"question": "What is the function of the X-axis on the machine?", "answer": "The X-axis is driven by an AC servomotor and a ball screw, and is used to move the column longitudinally."}
+{"question": "What is the function of the Y-axis on the machine?", "answer": "The Y-axis is driven by an AC servomotor and a ball screw, and is used to move the spindlehead vertically."}
+{"question": "What is the function of the Z-axis on the machine?", "answer": "The Z-axis is driven by an AC servomotor and a ball screw, and is used to move the table in the crosswise direction."}
+{"question": "What is the function of the ATC (Automatic Tool Changer) on the machine?", "answer": "The ATC mounts and removes tools from the spindle."}
+{"question": "What is the function of the tool shifter on the machine?", "answer": "The tool shifter carries a tool between the magazine and the ATC unit, and changes the phase of the key groove in a tool."}
+{"question": "How does the spindle cooling circuit work in a CNC machine?", "answer": "The cooling fluid absorbs heat from the spindle and is cooled by the radiator and the fan, and then the cooled oil is circulated back to the tank."}
+{"question": "What are the two functions of coolant in a CNC machine?", "answer": "To cool cutting tools and to wash away chips."}
+{"question": "What is the purpose of the covers in a CNC machine?", "answer": "To prevent chips from scattering outside the machine or entering the slideway surfaces, and to protect operators from hazards."}
+{"question": "What type of lamps are used as machine light in a CNC machine?", "answer": "LED lamps."}
+{"question": "What should you do before removing the maintenance cover in a CNC machine?", "answer": "Set the main power disconnect switch to the 'OFF' position and lock it."}
+{"question": "Why is regular inspection and maintenance essential for a CNC machine?", "answer": "To maintain high accuracy for a long period."}
+{"question": "What should you not use when cleaning inside the machine and peripheral equipment?", "answer": "Compressed air, as it will cause chips, sand grit, dust, and other foreign matter to enter the bearings and slideways, causing machine failure."}
+{"question": "How should you lock the main power disconnect switch before carrying out maintenance or repair work on a CNC machine?", "answer": "In the 'OFF' position with a padlock, so that other workers cannot operate the machine."}
+{"question": "What is important to note when supplying oil to a CNC machine?", "answer": "Not to supply oil excessively."}
+{"question": "What should you check if lubricating oil is consumed faster than usual or if the machine generates abnormal noise?", "answer": "The machine, as it could be a sign of machine failure."}
+{"question": "What is the purpose of the X-axis in a CNC machine?", "answer": "Spindle head movements in the longitudinal (right/left) direction."}
+{"question": "What is the positive direction of the Y-axis in a CNC machine?", "answer": "Spindle head upward movement."}
+{"question": "What is the purpose of the Z-axis in a CNC machine?", "answer": "Table movement in the crosswise (forward/backward) direction."}
+{"question": "What is the daily maintenance task for inside the machine?", "answer": "Removing chips from on top of the spindlehead, removing chips from the area near the ATC door, removing chips from on top of the Z-axis way cover, removing chips on the pallet change arm, and cleaning the window in the operator's door."}
+{"question": "How often should the air filter of the compound oil control unit be cleaned?", "answer": "Every week, 60 hours of operation."}
+{"question": "What is the monthly maintenance task for inside the machine?", "answer": "None specified."}
+{"question": "Why is it important to clean the plate filter and the bucket filter in the coolant tank?", "answer": "To ensure the coolant system operates effectively and prevent contamination."}
+{"question": "How often should the spindle cooling fluid level be checked?", "answer": "Daily."}
+{"question": "What is the purpose of cleaning the chip bucket outside the machine?", "answer": "To prevent chip accumulation and maintain a clean working environment."}
+{"question": "What should be done every 3 months, 750 hours of operation, for inside the machine?", "answer": "Refer to the manual section 4-3-1."}
+{"question": "Why is it important to check the hydraulic oil level daily?", "answer": "To ensure the hydraulic system operates effectively and prevent damage due to low oil levels."}
+{"question": "What is the recommended frequency for cleaning the strainer of the compound oil control unit?", "answer": "Refer to the manual section 4-7-2."}
+{"question": "What is the purpose of cleaning the electrical control cabinet cooling air filter?", "answer": "To ensure proper cooling and prevent overheating of the electrical components."}
+{"question": "What is the purpose of checking the coolant level in a CNC machine?", "answer": "To ensure proper functioning of the machine and prevent overheating, dimensional errors, and tool breakage."}
+{"question": "How often should you check the lubricating oil level in the table unit of a CNC machine?", "answer": "The lubricating oil level in the table unit should be checked daily."}
+{"question": "What is the recommended interval for replenishing slideway and ball screw lubricating grease?", "answer": "The slideway and ball screw lubricating grease should be replenished every 10 hours of operation."}
+{"question": "Why is it essential to check the air pressure in a CNC machine?", "answer": "To ensure the proper functioning of pneumatic systems and prevent damage to the machine and its components."}
+{"question": "What is the purpose of checking the hydraulic unit oil pressure in a CNC machine?", "answer": "To ensure the proper functioning of hydraulic systems and prevent damage to the machine and its components."}
+{"question": "When should you change the hydraulic oil of a table unit in a CNC machine?", "answer": "The hydraulic oil of a table unit should be changed every 4-7-1 hours of operation."}
+{"question": "What is the recommended interval for removing chips from on top of the spindlehead in a CNC machine?", "answer": "Chips should be removed from on top of the spindlehead daily."}
+{"question": "Why is it important to check the amount of grease used for slideway lubrication in a CNC machine?", "answer": "To ensure proper lubrication of slideways and prevent wear and damage to the machine's components."}
+{"question": "What should you do if the air pressure in a CNC machine is low?", "answer": "Check the air compressor and piping system for leaks or blockages, and repair or replace as necessary."}
+{"question": "What is the purpose of removing chips on the pallet change arm?", "answer": "To maintain machine cleanliness and prevent chip accumulation, which can cause damage to the machine or affect workpiece quality."}
+{"question": "How often should the window in the operator's door be cleaned?", "answer": "The window in the operator's door should be cleaned regularly as part of daily maintenance to ensure clear visibility during operation."}
+{"question": "What is the consequence of not removing chips from inside the machine?", "answer": "Failing to remove chips from inside the machine can lead to chip accumulation, which can cause machine damage, affect workpiece quality, or even create a fire hazard."}
+{"question": "What happens if the plate filter and bucket filter in the coolant tank are not cleaned?", "answer": "Failing to clean the plate filter and bucket filter in the coolant tank can lead to coolant contamination, affecting workpiece quality and tool life."}
+{"question": "Why is it important to clean the strainer of the compound oil control unit?", "answer": "Cleaning the strainer of the compound oil control unit ensures proper oil circulation and prevents oil contamination, which can affect machine performance or cause component damage."}
+{"question": "What happens if the hydraulic oil level is not checked regularly?", "answer": "Failing to check the hydraulic oil level regularly can lead to oil depletion, affecting machine performance, or even causing component damage."}
+{"question": "What is the purpose of checking the spindle cooling fluid level?", "answer": "Checking the spindle cooling fluid level ensures proper cooling of the spindle, preventing overheating and wear."}
+{"question": "Why is it important to check the spindle lubricating oil level?", "answer": "Checking the spindle lubricating oil level ensures proper lubrication of the spindle, preventing wear and tear, and maintaining machine reliability."}
+{"question": "What happens if the coolant level is not checked regularly?", "answer": "Failing to check the coolant level regularly can lead to coolant depletion, affecting workpiece quality, tool life, and machine performance."}
+{"question": "Why is it important to check the lubricating oil level in the table unit?", "answer": "Checking the lubricating oil level in the table unit ensures proper lubrication of the table, preventing wear and tear, and maintaining machine reliability."}
+{"question": "What happens if the amount of grease used for slideway lubrication is not checked?", "answer": "Failing to check the amount of grease used for slideway lubrication can lead to improper lubrication, affecting machine performance, and causing wear on the slideways."}
+{"question": "Why is it important to check the hydraulic unit oil pressure?", "answer": "Checking the hydraulic unit oil pressure ensures proper hydraulic system function, preventing component damage or machine downtime."}
+{"question": "What happens if the air pressure is not checked regularly?", "answer": "Failing to check the air pressure regularly can lead to improper air circulation, affecting machine performance, or causing component damage."}
+{"question": "What is the purpose of replenishing coolant in a CNC machine?", "answer": "To ensure proper cooling of the machine during operation, as needed."}
+{"question": "How often should you replenish slideway and ball screw lubricating grease in a CNC machine?", "answer": "Every 10 hours of operation."}
+{"question": "What is the approximate interval for changing the hydraulic oil of a table unit in a CNC machine?", "answer": "Every 4-7-1 interval, for NC rotary table and NC positioning table only."}
+{"question": "Why is it important to remove chips from on top of the spindlehead in a CNC machine?", "answer": "To prevent chip accumulation and ensure proper machine operation."}
+{"question": "What is the recommended interval for cleaning the electrical control cabinet cooling air filter in a CNC machine?", "answer": "Daily."}
+{"question": "What should you do to maintain the CNC machine's chip bucket?", "answer": "Clean it daily."}
+{"question": "What is the purpose of inspecting the inside of a CNC machine?", "answer": "To remove chips, debris, and ensure proper machine operation."}
+{"question": "How often should you inspect the ATC arm grease nipples in a CNC machine?", "answer": "At 4-6-1 interval."}
+{"question": "What should you do during daily maintenance of a CNC machine?", "answer": "Check and replenish oils, clean the machine, and inspect electrical components."}
+{"question": "What is the purpose of cleaning the air filters of the compound oil control unit?", "answer": "To ensure proper functioning and maintenance of the CNC machine."}
+{"question": "How often should the slideway and ballscrew lubricating grease be replenished?", "answer": "Every 10 hours or daily."}
+{"question": "What is the importance of checking the hydraulic oil level?", "answer": "To prevent damage to the hydraulic system and ensure smooth machine operation."}
+{"question": "What should be done if the coolant level is low?", "answer": "Replenish the coolant as needed to prevent overheating and damage to the machine."}
+{"question": "What is the function of the compound oil control unit?", "answer": "It controls the lubrication of the CNC machine's components, such as the spindle and slideways."}
+{"question": "How often should the spindle lubricating oil be replenished?", "answer": "According to the machine's maintenance schedule, usually every 4-5 months."}
+{"question": "What should be done if the hydraulic unit oil pressure is low?", "answer": "Check for leaks, replenish oil as needed, and ensure proper system functioning."}
+{"question": "What is the purpose of the table unit in an NC rotary table and NC positioning table?", "answer": "The purpose of the table unit is not specified in this section, but it is mentioned as a separate unit in the context of NC rotary table and NC positioning table."}
+{"question": "How often should the chip removal from on top of the spindlehead be performed?", "answer": "The chip removal from on top of the spindlehead should be performed daily."}
+{"question": "What is the recommended interval for cleaning the electrical control cabinet cooling air filter?", "answer": "The recommended interval for cleaning the electrical control cabinet cooling air filter is daily."}
+{"question": "What should be done with the chip bucket?", "answer": "The chip bucket should be cleaned."}
+{"question": "What should be done with the plate filter and the bucket filter in the coolant tank?", "answer": "The plate filter and the bucket filter in the coolant tank should be cleaned."}
+{"question": "How often should the hydraulic oil level be checked?", "answer": "The hydraulic oil level should be checked daily."}
+{"question": "How often should the spindle lubricating oil level be checked?", "answer": "According to the provided maintenance schedule, the spindle lubricating oil level should be checked daily."}
+{"question": "What is the recommended interval for checking the coolant level?", "answer": "The coolant level should be checked daily according to the maintenance schedule."}
+{"question": "What is the purpose of checking the amount of grease used for slideway lubrication?", "answer": "To ensure the correct amount of grease is applied to maintain proper slideway lubrication."}
+{"question": "When should the coolant be replenished?", "answer": "The coolant should be replenished as needed, according to the maintenance schedule."}
+{"question": "Why is it necessary to replenish grease through the ATC arm grease nipples?", "answer": "To ensure proper lubrication of the ATC arm and to prevent wear or failure."}
+{"question": "When should the hydraulic oil of the table unit be changed?", "answer": "The hydraulic oil of the table unit should be changed every 2 years or 6000 operating hours, whichever comes first."}
+{"question": "What is the recommended frequency for changing the working oil of the hydraulic unit and cleaning the hydraulic unit?", "answer": "Every six months."}
+{"question": "What is the procedure for checking the machine and hydraulic unit for oil leaks?", "answer": "Regularly check the machine and hydraulic unit for oil leaks during maintenance."}
+{"question": "Why is it important to clean the spindle taper hole?", "answer": "To ensure proper spindle function and prevent contamination."}
+{"question": "What should be done if the window on the CNC machine is dirty?", "answer": "The window should be cleaned as part of regular machine maintenance."}
+{"question": "What is the purpose of tightening the retention knob?", "answer": "To ensure the retention knob is securely tightened to prevent issues during machining."}
+{"question": "How often should the tool shank be cleaned?", "answer": "The tool shank should be cleaned regularly as part of maintenance to prevent contamination."}
+{"question": "What is the purpose of cleaning the line filter of the through-spindle cooling system?", "answer": "To ensure proper cooling system function and prevent contamination."}
+{"question": "Why is it important to check tools (inserts) for chipping, cracks, and other damage?", "answer": "To prevent tool breakage and ensure accurate machining."}
+{"question": "What should be done if the emergency stop buttons are not functioning correctly?", "answer": "Check the emergency stop buttons for correct operation and repair or replace if necessary."}
+{"question": "Why is it important to supply lubricating oil to the magazine chain?", "answer": "To ensure proper chain function and prevent wear."}
+{"question": "What is the purpose of maintaining the chip conveyor (only for ConSep2000Il system)?", "answer": "To ensure proper chip removal and prevent system clogs."}
+{"question": "What is the purpose of inspecting devices containing fluorocarbons?", "answer": "To ensure proper operation and safety."}
+{"question": "How often should the magazine chain tension be checked?", "answer": "First one daily."}
+{"question": "What is the importance of checking the safety devices for correct operation?", "answer": "To ensure safety and prevent accidents."}
+{"question": "What should be done daily for air unit drain function?", "answer": "Check the air unit drain function."}
+{"question": "How often should the wipers at the axis way Cover be checked for damage?", "answer": "Every 3 months."}
+{"question": "What is the purpose of clearing chips from inside the Z-axis way covers?", "answer": "To prevent chip accumulation and machine damage."}
+{"question": "How often should the coolant tank be cleaned and the coolant changed?", "answer": "Every 3 months."}
+{"question": "What should be done with the hoses on moving units if they are damaged?", "answer": "Check and replace them if necessary."}
+{"question": "How often should the spindle lubricating unit filters be cleaned?", "answer": "Every 3 months."}
+{"question": "What should be done with the Z-axis cable guide if it is damaged?", "answer": "Check and replace it if necessary."}
+{"question": "Why is it important to switch off the power before cleaning inside the machine?", "answer": "To prevent electrical shock and machine damage."}
+{"question": "What should be done with the electrical control cabinet cooling air filter if it is dirty?", "answer": "Clean it with water and dry it naturally before reinstallation."}
+{"question": "What precaution should be taken when handling coolant?", "answer": "Handle it with care, avoid skin contact, and ensure proper disposal."}
+{"question": "Why is it important to check oil levels regularly?", "answer": "To prevent machine damage and ensure proper operation."}
+{"question": "What should be done if the oil level is lower than the allowable lower limit?", "answer": "Replenish the specified oil."}
+{"question": "Why is it important to check pressures (hydraulic and air) regularly?", "answer": "To ensure proper machine operation and prevent damage."}
+{"question": "What should be done if the coolant level is lower than the lower limit level (L1) while the coolant pump is operating?", "answer": "Stop the coolant pump (i.e., machine operation) and supply coolant to bring the level within the specified range (H - L)."}
+{"question": "Why is it important to wipe off oil, coolant, chips, and other foreign matter from the surface of the machine?", "answer": "To maintain cleanliness and prevent accidents, as well as to ensure the machine operates smoothly and accurately."}
+{"question": "How often should the spindle taper hole be cleaned?", "answer": "The spindle taper hole should be cleaned weekly as part of the regular maintenance routine."}
+{"question": "What is the procedure for cleaning the line filter of the through-spindle cooling system?", "answer": "Drain the coolant from the line filter body, remove the bolts, pull out the cap and element, clean the element, reassemble the filter in the reverse order of disassembly, and ensure the coolant direction is correct as indicated on the cap."}
+{"question": "Why is it important to use only the specified lubricating oil in the CNC machine?", "answer": "Using any other oil may cause machine trouble and other problems, as specified by Yamazaki Mazak."}
+{"question": "What should be done if alarm 209 SLIDEWAY OIL MALFUNCTION occurs due to an emptied grease cartridge?", "answer": "Replace the grease cartridge, perform steps (3) and on, and ensure alarm 209 is released."}
+{"question": "Why is it prohibited to use any brand of grease other than the specified one?", "answer": "Failure to observe this prohibition might result in machine trouble, coagulation, or performance degradation."}
+{"question": "What type of grease should not be used for lubricating CNC machine parts?", "answer": "Grease containing molybdenum disulfide should never be used."}
+{"question": "Why should you store grease in a cool, dry place?", "answer": "To prevent separation of oil from other ingredients and to maintain the quality of the grease."}
+{"question": "What should you do when connecting a product or if air is trapped in the pump?", "answer": "Bleed the air by loosening the air bleed plug, operating the pump until only grease is discharged, and then tightening the air bleed plug."}
+{"question": "How often should you manually apply lubricating oil to the magazine chain?", "answer": "Manually apply lubricating oil to the magazine chain once a month using a brush to ensure it is lubricated properly."}
+{"question": "What is the recommended lubricating oil to use for the magazine chain?", "answer": "Only use the lubricating oil recommended by Yamazaki Mazak, as specified in Section 7-1-1 'List of oiling points'."}
+{"question": "What could happen if the magazine chain is not lubricated correctly?", "answer": "Abnormal noises will be generated from the magazine, and in the worst case, the magazine will stop."}
+{"question": "How do you check the emergency stop buttons for correct operation?", "answer": "Check that the emergency stop button arranged on the NC operating panel and pallet changer operating panel functions correctly. If it fails to function correctly, the button must be changed."}
+{"question": "What should you do every three months for devices containing fluorocarbons?", "answer": "Inspect each device concerned in regard to contamination or clogging of filters, leakage from connections or other parts in liquid piping, and abnormal noise or loud noise during operation."}
+{"question": "What type of refrigerant is used in the LIQUID TUNER device?", "answer": "R407C."}
+{"question": "Why should you only use the lubricating oil recommended by Yamazaki Mazak?", "answer": "Using other oils may cause machine failure and have other adverse effects."}
+{"question": "How often should you inspect devices containing fluorocarbons?", "answer": "Inspect devices containing fluorocarbons every three months and record the results."}
+{"question": "What is the first step in changing the hydraulic oil of the table unit?", "answer": "Place the main power disconnect switch to the 'OFF' position."}
+{"question": "Why is it important to check and clean the suction strainer of the compound oil control unit?", "answer": "If the suction strainer is clogged, it will cause failure of the circulation pump, leading to an increase in refrigerating cycle load and potentially causing machine failure."}
+{"question": "What should you do if you find an abnormality during inspection of the safety devices?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "How do you check the operation of the operator's door interlock?", "answer": "Refer to PART 2, 'Operators Door Interlock' in the Operating Manual."}
+{"question": "What happens if the magazine chain tension is not adjusted?", "answer": "It will cause overloading of the drive motor."}
+{"question": "How often should you check the air unit drain function?", "answer": "The regular inspection schedule is not specified in the provided text, but it is recommended to check the air unit drain function regularly to ensure proper operation."}
+{"question": "What should you do if you find damage to the wipers at the axis way cover?", "answer": "Replace the damaged wiper with a new one as soon as possible."}
+{"question": "How do you supply grease to the pantograph of the X-axis way cover?", "answer": "Move the X-axis way cover to the center of stroke, shut off the power, enter the column space after opening the machine rear cover, and apply grease to the supporting points of the pantograph using a brush."}
+{"question": "Why is it important to clean the coolant tank and change the coolant?", "answer": "To prevent spills on the floor, which can cause personnel to slip and be injured."}
+{"question": "What is the purpose of checking hoses on moving units for damage?", "answer": "To prevent serious or fatal injury, it is essential to switch off the power before checking hoses on moving units for damage."}
+{"question": "How often should the working oil of the hydraulic unit be changed?", "answer": "The working oil of the hydraulic unit should be changed in the first six months and every year thereafter, depending on the machine operating conditions."}
+{"question": "What should be done when replenishing oils in the hydraulic unit?", "answer": "Only the specified oil recommended by Yamazaki Mazak should be used when replenishing oils in the hydraulic unit, otherwise, machine trouble and other problems will occur."}
+{"question": "Why is it important to clean the suction strainer when changing the working oil?", "answer": "Cleaning the suction strainer is crucial because a clogged suction strainer can lead to a failure of the hydraulic pump, causing the machine to malfunction."}
+{"question": "What is the procedure for cleaning the spindle lubricating unit filters?", "answer": "To clean the spindle lubricating unit filters, take out the filter from the oil filler port and clean it by supplying compressed air from the inside of the filter using a hand-held air nozzle."}
+{"question": "What precautions should be taken when greasing and cleaning the ATC door guide?", "answer": "Shut off the power before greasing or cleaning the ATC door, and use only the oil specified by Yamazaki Mazak to avoid machine trouble and other problems."}
+{"question": "What is the purpose of replenishing grease in the ATC door cylinder?", "answer": "Replenishing grease in the ATC door cylinder is necessary to ensure smooth operation and prevent machine failure."}
+{"question": "Why is it important to check and clean the ATC door guide regularly?", "answer": "Regular cleaning and greasing of the ATC door guide are essential to prevent abnormal noise, machine trouble, and hindered normal machine operation."}
+{"question": "What should be done if damage is found on the hoses at the rear of the machine?", "answer": "If damage is found on the hoses at the rear of the machine, contact the nearest Mazak Technical Center or Technology Center for assistance."}
+{"question": "Why is it necessary to check the mounting bolts of the ATC door guide?", "answer": "Checking the mounting bolts of the ATC door guide is necessary to ensure they are not loose, which could cause machine trouble and other problems."}
+{"question": "What is the first step in changing the oil in the spindle lubricating unit?", "answer": "Switch off the power."}
+{"question": "How often should the Z-axis cable guide be checked?", "answer": "Check the Z-axis cable guide in the first three years and every year thereafter."}
+{"question": "What should be done before applying rust preventive oil to the machine?", "answer": "Switch off the power."}
+{"question": "What is the capacity of the grease cartridge for slideway lubricating grease?", "answer": "400 cm³ (24.41 in³)"}
+{"question": "What should be done if air enters the pipe while cleaning the spindle lubricating unit filters?", "answer": "Air will cause spindle trouble. Do not disconnect the pipes."}
+{"question": "What is the procedure for replenishing slideway lubricating grease?", "answer": "Replace the grease cartridge with a new one of the specified brand. Do not replenish grease to the cartridge as it may cause machine trouble."}
+{"question": "Why is it necessary to apply rust preventive oil to certain parts of the machine before stopping it for a long time?", "answer": "Unpainted surfaces of parts such as linear guide rails, ball screws, way covers, pallet, table, pallet changer, and spindle will rust and deteriorate if not operated for a long time, affecting their function."}
+{"question": "What should be done before restarting the machine after it has been stopped for longer than two weeks?", "answer": "Carry out the inspection and maintenance tasks listed in 4.11, including wiping off rust preventive oil, replenishing coolant, usual inspection before starting the operation, inspecting the machine for oil leaks, warm-up operation, inspecting the machine for noise, vibration, and abnormal temperature rise, and uploading the NC data."}
+{"question": "How long should the machine be run using the warm-up program (PNO. 6000) before starting normal operation?", "answer": "Run the machine for approximately three hours."}
+{"question": "What should be done if any abnormality is found during the warm-up operation?", "answer": "Take appropriate corrective action by referring to Chapter 5 'MAINTENANCE OF MAJOR UNITS'."}
+{"question": "What should be done if the tool has come into contact with the workpiece or other sections?", "answer": "Check the tool, the workpiece, etc. and reset the emergency stop button."}
+{"question": "How many points should be checked when the source of the trouble cannot be located?", "answer": "12 points, including alarm history, ambient temperature, power failure, supply voltage, and others."}
+{"question": "What is displayed on the GRAPHIC MAINTENANCE screen when a PC-related alarm occurs?", "answer": "The parts name where the alarm has occurred is displayed in reverse status on a layout diagram of the corresponding section."}
+{"question": "What is the purpose of the DIAGNOSIS(USER) screen?", "answer": "To check the whole alarm history."}
+{"question": "What should be done if the machine is not damaged after an alarm?", "answer": "Machine a test piece(s) and check for normal machining and for sufficient accuracy."}
+{"question": "If the spindle stops due to an alarm, what should be checked?", "answer": "External power supply, ambient temperature, load, and spindle drive unit or motor."}
+{"question": "What is the corrective action if the spindle drive unit is defective?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What should you do if the spindle is rotating at high speed with an unbalanced tool mounted in it?", "answer": "Change the tool with a balanced tool."}
+{"question": "What could be the cause of abnormal noise or vibration during spindle rotation?", "answer": "The spindle drive unit or motor could be defective, or there could be loose bolts."}
+{"question": "What should you do if tool clamp or unclamp operation is not completed?", "answer": "Check the sensor, hydraulic valve, clamp/unclamp cylinder, and hydraulic unit for possible defects or blockages."}
+{"question": "What could cause oil leakage in the clamp/unclamp cylinder?", "answer": "The seal in the clamp/unclamp cylinder may have worn out."}
+{"question": "What should you do if the ATC air blast is not supplied or does not stop?", "answer": "Check if an external air source is connected and if the solenoid valve is defective."}
+{"question": "How does the spindlehead construct?", "answer": "The spindlehead consists of oil-air pressure sensor, tool clamp/unclamp valve, tool clamp, and tool unclamp sensor."}
+{"question": "What is the purpose of the pressure switch in the spindle?", "answer": "The pressure switch prevents lubrication failure problems even if air pressure is lowered."}
+{"question": "What could cause inaccurate osltloning?", "answer": "Loose bolts of axis drive parts or a defective encoder in the servomotor could cause inaccurate osltloning."}
+{"question": "What should you do if zero-point position is not fixed or the limit switch does not function correctly?", "answer": "Check if the bolts fixing the zero-point return proximity sensor or zero-point dog are loose, or if the zero point sensor is defective."}
+{"question": "What could cause an axis to stop due to alarm?", "answer": "Excessive load, high ambient temperature, or defects in the servo control unit or servomotor could cause an axis to stop due to alarm."}
+{"question": "What should you do if abnormal noise is generated during axis movement?", "answer": "Consult the nearest Mazak Technical Center or Technology Center for assistance."}
+{"question": "What is the corrective action if the wiper at the way cover is damaged?", "answer": "Change the wiper."}
+{"question": "What would you do if abnormal noise is generated during axis movement and the waycover is defective?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What is responsible for driving the Z-axis in the axis drive system?", "answer": "The Z-axis drive AC servomotor is responsible for driving the Z-axis."}
+{"question": "What is the function of the encoder in the axis drive system?", "answer": "The encoder is used to track the position and movement of the axes."}
+{"question": "What would you do if the ATC cover open/close operation does not complete due to a defective sensor?", "answer": "Change the sensor or adjust its position."}
+{"question": "Why would a tool exceeding the tool size specifications cause the magazine to not rotate?", "answer": "A tool exceeding the tool size specifications can cause the magazine to not rotate because it obstructs the magazine's movement."}
+{"question": "What is the corrective action if the magazine lock pin sensor is defective or not mounted correctly?", "answer": "Change the sensor or adjust its position."}
+{"question": "Why is it important to adjust the magazine chain tension?", "answer": "Magazine chain tension needs to be adjusted to prevent the chain from elongating, which can cause issues with the magazine's operation."}
+{"question": "What would you do if the magazine shifter does not operate due to a defective air valve?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What is the probable cause of the magazine shifter not operating in an 80/120/160-tool magazine?", "answer": "The magazine shifter motor with the reducer is defective or the magazine shifter is defective or the sensors and/or limit switches are defective, or they are not mounted correctly."}
+{"question": "What should be done if the ATC standby pocket does not operate in an 80/120/160-tool magazine?", "answer": "Check if the sensor is defective or not mounted correctly, or if the ATC standby pocket is defective, or if the air valve is defective, or if air is not supplied to the air valve."}
+{"question": "What is the corrective action for a defective drive motor in an ATC unit?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What could be the problem if the table does not rotate or is not indexed correctly?", "answer": "The pressure switch is defective, or the solenoid valve is defective or blocked, or the hydraulic cylinder is defective, or the hydraulic unit is defective."}
+{"question": "What type of sensor is used in the ATC door open confirmation sensor?", "answer": "A proximity sensor of type FL7M-3K6H-CN made by Azbil."}
+{"question": "What is the probable cause of pallet clamp operation not being completed?", "answer": "The pressure switch is defective, or the solenoid valve is defective or blocked, or the hydraulic cylinder is defective, or the hydraulic unit is defective."}
+{"question": "How can you troubleshoot ATC operation interruption due to alarm (Alarm No. 390, 396, 304)?", "answer": "Check if the ATC unit is defective or if the spindle clamp/unclamp mechanism is defective."}
+{"question": "What is the part name of the proximity sensor used in the ATC magazine construction?", "answer": "Arm swing start sensor ATC door open confirmation sensor."}
+{"question": "What should be done if the Pailet clamp operation is not completed?", "answer": "Remove the object hindering table rotation."}
+{"question": "What could be the cause of the table not rotating during Pailet clamp operation?", "answer": "An interfering object, a defective table rotation motor, a trouble in the table, or loose bolts."}
+{"question": "If the Pallet correct clamp detection air blast is not supplied, what could be the cause?", "answer": "A defective solenoid valve or a blocked air discharge port."}
+{"question": "How can an oil leak in the pallet clamp/unclamp cylinder be addressed?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What should be done if the Pallet positioning accuracy deviates?", "answer": "Contact the nearest Mazak Technical Center or Technology Center to inspect the encoder in the servomotor and loose bolts."}
+{"question": "What could be the cause of zero-point return operation not being executed correctly?", "answer": "A defective encoder in the servomotor."}
+{"question": "What should be done if vibration is excessively large during pallet change cycle?", "answer": "Mount workpieces according to the instructions in the OPERATING MANUAL, as pallet load may exceed the allowable limit."}
+{"question": "What could be the cause of pallet change operation not starting even when a pallet change command is specified?", "answer": "An interfering object, a defective home position return sensor, a defective pallet changer unit, a defective pallet changer drive motor or its drive unit, or incorrect pallet changer unit positioning."}
+{"question": "How can a defective home position return sensor be addressed?", "answer": "Change the sensor or adjust its position as per the instructions in 5-13-3 7-1-2."}
+{"question": "Who should be contacted if the pallet changer unit is defective?", "answer": "The nearest Mazak Technical Center or Technology Center."}
+{"question": "What should you do if the pallet change operation does not start even when a pallet change command is specified?", "answer": "Check for loose bolts, insufficient capacity of external air source, defective home position return sensor, defective solenoid valve, or defective air cylinder, and contact the nearest Mazak Technical Center or Technology Center if necessary."}
+{"question": "What is the first step to troubleshoot if the setup pin cannot be retracted?", "answer": "Check if the external air source capacity is sufficient and prepare a new air source meeting the specified requirements if necessary."}
+{"question": "What could be the cause of the pallet change operation stopping halfway?", "answer": "Loose bolts, insufficient capacity of external air source, defective home position return sensor, defective solenoid valve, or defective air cylinder could be the cause."}
+{"question": "How do you troubleshoot if the hydraulic pressure is always lower than 7 MPa (1000 psi)?", "answer": "Check the oil amount in the hydraulic unit tank, the hydraulic unit filter for clogging, oil viscosity, hydraulic unit pump or motor for defects, relief valve for defects, and look for oil leaks in the hydraulic circuit."}
+{"question": "What should you do if the hydraulic unit pump or motor is defective?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What is the probable cause of abnormal noise generation in the hydraulic system?", "answer": "The probable cause could be oil leak in the hydraulic circuit, defective hydraulic unit pump or motor, or defective relief valve."}
+{"question": "What should you do if the hydraulic unit filter is clogged?", "answer": "Clean the filter."}
+{"question": "What is the probable cause if the oil amount in the hydraulic unit tank reduces?", "answer": "There is oil leak in the hydraulic unit circuit."}
+{"question": "What is the safety precaution to observe while maintaining the hydraulic unit?", "answer": "Shut off the power to the machine before maintaining the hydraulic unit, failure to observe this could cause operator's injuries or severe machine troubles."}
+{"question": "What is the procedure to change the hydraulic pressure gauge?", "answer": "Shut off the power to the machine, remove the cover, loosen and detach the pressure gauge, and mount the new pressure gauge after winding the threads with sealing tape."}
+{"question": "What is the part name of code 001T in the hydraulic unit?", "answer": "Hydraulic unit."}
+{"question": "What is the probable cause if the pressure is lower than 0.5 MPa (70 psi) in the pneumatic system?", "answer": "Insufficient capacity of external air source, reducing valve in the air unit is defective, mist separator in the air unit is clogged, leak in the pneumatic circuit, or air pressure switch is defective."}
+{"question": "What is the corrective action if the mist separator in the air unit is clogged?", "answer": "Change the filter element."}
+{"question": "Why is it necessary to shut off the power to the machine and disconnect the external air source before changing the filter element of mist separator?", "answer": "Attempting to change the filter element without taking these precautions could cause machine damage or severe injuries."}
+{"question": "How often should the filter element of mist separator be changed?", "answer": "The filter element should be changed every two years."}
+{"question": "What does 'element ass'y' indicate in the list of wearable parts?", "answer": "A set of filter element, O ring, and gasket."}
+{"question": "What is the function of the part with code G50SV010370?", "answer": "The part with code G50SV010370 is a solenoid valve, which is used for air source."}
+{"question": "What is the purpose of the cylinder with part number CDQ2B80-30DM-A73L?", "answer": "The cylinder with part number CDQ2B80-30DM-A73L is used for the 2-pallet changer lock pin extend function."}
+{"question": "What type of valve is part number VXD2130-03-5D-B?", "answer": "Part number VXD2130-03-5D-B is a solenoid valve."}
+{"question": "What is the maker of the part with code G50SVO08790?", "answer": "The maker of the part with code G50SVO08790 is SMC."}
+{"question": "What is the function of the part with code G54SVO01480?", "answer": "The part with code G54SVO01480 is a speed controller, which is used for air blow."}
+{"question": "What type of sensor is part number FL7M3JGH-CN?", "answer": "Part number FL7M3JGH-CN is a proximity sensor."}
+{"question": "What type of valve is part number VCA31-5D-4-02?", "answer": "Part number VCA31-5D-4-02 is a solenoid valve."}
+{"question": "What is the maker of the part with code G73ZZO00080?", "answer": "The maker of the part with code G73ZZO00080 is PISCO."}
+{"question": "What type of generator is part number VUH05-016A?", "answer": "Part number VUH05-016A is a vacuum generator."}
+{"question": "What is the probable cause of Alarm 209 SLIDEWAY OIL MALFUNCTION?", "answer": "The probable causes are: 1. Grease is used up so that the grease cartridge is emptied, 2. Entry of air into grease cartridge, or 3. Piping is blocked."}
+{"question": "Why is it important to store a spare grease cartridge?", "answer": "Otherwise, machine operation may be disabled."}
+{"question": "Where can you find information on centralized lubrication unit maintenance?", "answer": "Refer to sections 4-5 'Monthly Inspection and Maintenance' and 4-8 'Every One-Year Inspection and Maintenance'."}
+{"question": "What should you do if the spindle cooling fluid is consumed abnormally quickly?", "answer": "Contact the nearest Mazak Technical Center or Technology Center due to a probable leak in the spindle cooling circuit."}
+{"question": "What is the corrective action for Alarm 206 SPINDLE LUB. CHILLER MALF. due to insufficient amount of spindle cooling fluid?", "answer": "Replenish the specified spindle cooling fluid."}
+{"question": "What should you do if the air filter is blocked in the spindle cooling unit?", "answer": "Wash the air filter. After washing the air filter, press the reset button in the relay box of the chiller unit."}
+{"question": "Why is it important to ensure the chiller unit is not directly subjected to hot air?", "answer": "To ensure the chiller unit operates within the specified operating temperature range."}
+{"question": "What is the probable cause of abnormal noise generated by the spindle cooling unit?", "answer": "A clogged filter."}
+{"question": "What is the corrective action for abnormal noise generated by the spindle cooling unit due to a clogged filter?", "answer": "Clean the filter."}
+{"question": "What is the probable cause of abnormal noise generation in a CNC machine?", "answer": "Insufficient amount of spindle cooling fluid, loose bolts, hydraulic unit pump or motor defect, or chiller defect."}
+{"question": "What should you do if the alarm message '206 SPINDLE LUB. CHILLER MALF.' is displayed on the CNC machine?", "answer": "Check for insufficient spindle cooling fluid, high oil viscosity, leak in the spindle cooling circuit, chiller defect, air filter blockage, or ambient temperature being out of range, and take corrective actions accordingly."}
+{"question": "How do you troubleshoot the issue of spindle cooling fluid being consumed abnormally quickly?", "answer": "Check for a leak in the spindle cooling circuit and contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What is the corrective action for a clogged filter in a CNC machine's spindle cooling system?", "answer": "Clean the filter."}
+{"question": "Why is it important to replenish the specified spindle cooling fluid in a CNC machine?", "answer": "To prevent abnormal noise generation, ensure proper cooling of the spindle, and prevent overheating."}
+{"question": "What should you do if a CNC machine's chiller unit is defective?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "How do you troubleshoot the issue of hydraulic unit pump or motor defect in a CNC machine?", "answer": "Contact the nearest Mazak Technical Center or Technology Center."}
+{"question": "What is the purpose of the compound oil control unit in a CNC machine?", "answer": "The compound oil control unit integrates the oil cooling unit (chiller unit) and the hydraulic unit to cool the spindle and ball screw."}
+{"question": "What type of refrigerant is used in the compound oil control unit?", "answer": "HFCs (hydrochlorofluorocarbons) are used as refrigerants in the compound oil control unit."}
+{"question": "What should be done when disposing of a compound oil control unit?", "answer": "Contact a waste collection and disposal service company to collect and dispose of the HFCs in accordance with national regulations."}
+{"question": "What is the corrective action if the coolant discharge volume is reduced?", "answer": "Clean the filter, replenish the specified coolant, or clean the discharge nozzle."}
+{"question": "Why may the coolant discharge not stop?", "answer": "A defective solenoid valve can cause the coolant discharge not to stop."}
+{"question": "What is the part name of the component with the part number GO7GUO03031?", "answer": "Coolant pump."}
+{"question": "What is the type of coolant pump with the part number GO7GUO03031?", "answer": "MTH2-90/7."}
+{"question": "What is the functionality of the MTH2-90/7 coolant pump?", "answer": "Flood coolant (Through spindle coolant 0.8 MPa (110psi))."}
+{"question": "What is the purpose of the Filter (#10) with part number 32737910010?", "answer": "The filter is used for coolant filtration."}
+{"question": "What type of valve is G50SVO13490?", "answer": "Solenoid valve"}
+{"question": "What is the pressure of the through-spindle coolant for part number G50SVO13490?", "answer": "1.5 MPa (210 psi)"}
+{"question": "What is the function of the H29JNO02921 piping unit?", "answer": "Piping unit"}
+{"question": "What is the correct sequence for removing the Z-axis way cover?", "answer": "Move the Z-axis to the first zero-return point, switch off the power to the machine, unscrew the bolts that hold the way cover to the table, and slide the cover in the direction indicated by the arrow symbol."}
+{"question": "What should be done before entering the machine for maintenance?", "answer": "Shut off the power to the machine by setting the main power disconnect to the OFF position."}
+{"question": "What is the purpose of the wiper on the way cover?", "answer": "To remove accumulated chips."}
+{"question": "What should be done if an abnormal noise is generated from the way cover?", "answer": "Check the wiper of the way cover for damage and replace it if necessary."}
+{"question": "Why is it important to move the Z-axis slowly in the entire stroke range after recovering the Z-axis way cover?", "answer": "To check if the Z-axis way cover is correctly fixed to the table."}
+{"question": "What should be done if door interlock alarm occurs although the door is not open?", "answer": "Change the door lock switch."}
+{"question": "How often should the area inside the Z-axis way cover be cleaned?", "answer": "According to the maintenance schedule, but also after each use if necessary."}
+{"question": "What should be done after completing the cleaning of the area inside the Z-axis way cover?", "answer": "Close the Z-axis way cover, tighten the bolts, and switch on the power to the machine."}
+{"question": "What is the purpose of the wiper protector?", "answer": "The wiper protector is to prevent damage to the wiper, it should be handled carefully since it is thin and sharp."}
+{"question": "How do you replace the Z-axis way cover wipers?", "answer": "Prepare the wiper, remove the Z-axis way covers, remove the flat countersunk head screws, remove the wiper, wiper protector, and stop plate, fit the stop plate, wiper protector, and wiper, and clamp them together."}
+{"question": "What should you do before replacing the X-axis way cover wipers?", "answer": "Move the X-axis to a position that will facilitate the work, shut off the power to the machine, and loosen the bolts and nuts that clamp the wiper."}
+{"question": "How do you troubleshoot an alarm message 'BAT blinks on the Screen'?", "answer": "Check the voltage of the battery used to retain NC data, it may be low due to the battery being used to the end of its life, and replace the battery if necessary."}
+{"question": "What could be the cause of an 'Alarm No. <053>' message displayed on the screen?", "answer": "The ambient temperature of the NC unit may be higher than 40°C (104°F), or the cooling fan of the NC unit may be defective."}
+{"question": "How do you reset the thermal relay after an alarm message '217 THERMAL TRIP' or '218 CONVEYOR THERMAL TRIP'?", "answer": "Eliminate the cause of the overload of the related motor, and then reset the thermal relay by pushing the reset button or by turning ON the breaker switch."}
+{"question": "What is the procedure for changing the proximity sensor?", "answer": "Disconnect the sensor cable, remove the sensor from the bracket, set a new sensor, tighten nuts temporarily, measure and adjust the gap, tighten nuts at the same torque, and connect the sensor cable."}
+{"question": "How often should the NC screen be cleaned?", "answer": "The NC screen should be cleaned regularly to maintain its effectiveness."}
+{"question": "What should be done if the touch screen becomes heavily contaminated?", "answer": "Disable the touch screen by turning off the main power disconnect switch of the machine or key [16] on the machine operating panel, and then wipe the screen with a dry soft cloth to remove contamination."}
+{"question": "What is the allowable tightening torque of the nut for dimensions less than or equal to 10 mm?", "answer": "11.8 Nm (8.7 ft-lbf)"}
+{"question": "What should be done if the tool length measuring stand fails to move?", "answer": "Check the pressure of the air source and ensure there is no foreign matter in the tool length measuring stand."}
+{"question": "How do you maintain the deceleration sensor and skip sensor in the tool length measuring unit?", "answer": "Loosen bolt [1] and remove the plate, then maintain the sensor, ensuring a gap of 0.3 to 0.5 mm (0.012 to 0.020 in) between the front end face of the sensor and the dog."}
+{"question": "What should be done before replacing the LED light?", "answer": "Set the main power disconnect switch to the 'OFF' position and ensure only authorized electricians perform the replacement work."}
+{"question": "What type of batteries should be used in the battery unit?", "answer": "Size D alkaline batteries, such as LR20RS(2S)JEE, should be used."}
+{"question": "How often should the batteries in the battery unit be replaced?", "answer": "Replace the batteries once a year, or when alarm 12 SERVO BATTERY WARNING is displayed."}
+{"question": "What should be done after replacing the batteries in the battery unit?", "answer": "Check if the batteries have been replaced correctly by turning off the main power disconnect switch, then turning it back on, and verifying that alarm 12 SERVO BATTERY WARNING is not displayed."}
+{"question": "What should be done before starting the installation work of a CNC machine?", "answer": "Read Chapter 2 'SAFETY PRECAUTIONS' and make sure you thoroughly understand the information in this Chapter."}
+{"question": "What are the essential safety equipment and clothing required during installation work?", "answer": "Helmet, safety shoes, etc. and clothing appropriate for the work to be undertaken."}
+{"question": "What should be checked during piping and wiring work?", "answer": "Matchmarks between the hose and fitting location."}
+{"question": "What is the allowable temperature range during machine operation?", "answer": "+5 to +40°C (+41 to +104°F)"}
+{"question": "What is the allowable relative humidity during machine operation?", "answer": "30 to 75% (no condensation)"}
+{"question": "What are the requirements for maintaining the guaranteed accuracy of a CNC machine?", "answer": "The machine should be installed at a site with tightly-packed soil, no vibration-generating equipment nearby, and with tightly controlled temperature and humidity."}
+{"question": "What should be checked before connecting the power supply cable to the machine?", "answer": "The power facility should be able to supply sufficient power to the machine."}
+{"question": "What may happen if the power capacity is insufficient during machine installation?", "answer": "The machine may malfunction, and the service life of the electric parts will be shortened, potentially causing serious safety problems."}
+{"question": "How should the power source voltage be checked before connecting it to the machine?", "answer": "Check the allowable input voltage of the machine according to the machine specifications."}
+{"question": "What is the standard spindle speed of the CNC machine?", "answer": "10000 min-1"}
+{"question": "What is the power rating of the spindle drive motor?", "answer": "37 kW"}
+{"question": "How many tools are available in the magazine?", "answer": "Total 1 43, 60, 80, 100/120/140/160 tools"}
+{"question": "What is the total power requirement of the CNC machine in 4th-axis mode?", "answer": "24VDC Grand total of power requirement (kVA) (4th-axis) 30-min rating 91.04 92.93 (97.87)"}
+{"question": "What is the input voltage range for the CNC machine?", "answer": "200V, 220/240 V, 380V, 420-440V, 480V"}
+{"question": "What is the continuous rating of the spindle drive motor in 4th-axis mode?", "answer": "50 Continuous rating (4th-axis) [30-min rating] (4th-axis)"}
+{"question": "How many kW is the power requirement of the X-axis, Y-axis, and Z-axis?", "answer": "7.0kW, 9.0kW, 7.0kW (4.5kW)"}
+{"question": "What is the power rating of the coolant pump motor?", "answer": "0.73/1.21 kW"}
+{"question": "What is the power rating of the chip conveyor motor?", "answer": "0.4 kW x 2"}
+{"question": "What is the power rating of the tool shifter motor?", "answer": "1.69 back wash pump"}
+{"question": "What is the maximum allowable temperature of the insulator for the power source connection cables?", "answer": "110°C (230°F)"}
+{"question": "What is the ambient temperature for the power source connection cables?", "answer": "30°C (86°F) or lower"}
+{"question": "What is the size of the power cable for a 200V input voltage?", "answer": "80 mm2 (0.124 in2)"}
+{"question": "What is the size of the grounding cable for a 200V input voltage?", "answer": "40 mm2 (0.062 in2)"}
+{"question": "What is the continuous rating of the spindle drive motor?", "answer": "30kW [37kW]"}
+{"question": "How many tools can the magazine hold?", "answer": "1, 43, 60, 80, 100/120/140/160 tools"}
+{"question": "What is the power requirement of the chiller unit motor?", "answer": "3.75/4.25 kW"}
+{"question": "What is the power requirement of the flood coolant pump motor?", "answer": "0.72/1.21 kW"}
+{"question": "What is the grand total of the power requirement for a 50 Hz spindle drive motor?", "answer": "85.08 (89.99) kVA"}
+{"question": "What is the grand total of the power requirement for a 60 Hz spindle drive motor?", "answer": "86.97 (91.88) kVA"}
+{"question": "What is the continuous rating of the spindle drive motor in kW?", "answer": "30 kW"}
+{"question": "What is the power requirement of the chiller unit motor in kW?", "answer": "3.75/4.25 kW"}
+{"question": "What is the total power requirement for the 50 Hz option with 43 tools?", "answer": "93.69 kVA"}
+{"question": "What is the input voltage for the 380V option?", "answer": "380V"}
+{"question": "What is the recommended pressure range for the air source in MPa?", "answer": "0.5 to 0.9 MPa"}
+{"question": "What is the minimum discharge requirement for the air source without the air blast option in Umin (ANR)?", "answer": "350 Umin (ANR)"}
+{"question": "What is the importance of ensuring the dew point of the air source is -17°C (1.4°F) or lower?", "answer": "To prevent damage to air actuators and equipment due to high moisture content or hot air"}
+{"question": "Why is it necessary to confirm the machine dimensions when carrying the machine into the plant?", "answer": "To ensure the machine can pass through the entrance and be installed properly"}
+{"question": "What is the purpose of providing a vibration insulation pit around the machine when installed near vibration-generating equipment?", "answer": "To take appropriate measures to reduce the effects of vibration on the machine"}
+{"question": "What is the importance of selecting a flat place for machine installation?", "answer": "To avoid settling and subsidence of the soil after installation"}
+{"question": "What is the importance of foundation work in CNC machine installation?", "answer": "Foundation work is necessary to compact the ground well or pour concrete to avoid settlement or inclination of the soil after machine installation."}
+{"question": "How many jack bolts are required for a 43/60-Tool Magazine in a 2-pallet changer?", "answer": "9 jack bolts are required for a 43/60-Tool Magazine in a 2-pallet changer."}
+{"question": "What is the purpose of using a wire rope or sling when lifting heavy objects during installation?", "answer": "To bear the weight of the object being lifted and to ensure proper balance."}
+{"question": "At what angle should the wire rope or sling be positioned when lifting the machine?", "answer": "The angle made by the wire rope or sling must be less than 60°."}
+{"question": "What should be checked before lifting the machine?", "answer": "It should be checked that each machine unit is fixed in position and there are no tools or anything else on the machine."}
+{"question": "How should the machine be lifted?", "answer": "The machine should be lifted in the manner shown in Fig. 6-2, using a lifting fixture and wire rope."}
+{"question": "What is the minimum diameter of the wire rope required for lifting the machine?", "answer": "At least 25 mm (0.98 in) diameter."}
+{"question": "What should be placed between the machine and wire ropes during lifting?", "answer": "Wood blocks or pads should be placed between the machine and wire ropes to prevent direct contact and damage."}
+{"question": "Why should the drain ports of hydraulic oil tank, coolant tank, and lubricating oil tank be securely tightened during lifting?", "answer": "To prevent oil from leaking."}
+{"question": "What is the weight of the chip conveyor (dual belt type) in the CNC machine?", "answer": "The weight of the chip conveyor (dual belt type) is 600 kg (1320 lbs)"}
+{"question": "Why is it necessary to clean the machine before operation?", "answer": "It is necessary to clean the machine before operation because slideways and other machine parts are coated with rust preventive oil, and sand grits, dust, and other foreign matter tend to stick to this coating during transportation, which can affect machining accuracy."}
+{"question": "What should be done with the shipping brackets and bolts after removing them?", "answer": "The removed shipping brackets and bolts should be stored in a suitable place to allow for reuse during movement or transport of the machine in the future."}
+{"question": "What tool is required to remove the shipping brackets?", "answer": "An Allen wrench (6 mm, 10 mm, 17 mm) is required to remove the shipping brackets."}
+{"question": "What is the importance of correct installation of the machine?", "answer": "Correct installation of the machine is crucial because machining accuracy is greatly influenced by installation conditions."}
+{"question": "How should the machine level be adjusted temporarily?", "answer": "The machine level should be adjusted temporarily by driving wedges under the machine."}
+{"question": "What items should be checked after temporary leveling is finished?", "answer": "After temporary leveling is finished, the following items should be checked and confirmed: grounding, screws at terminals, connection of cannon connectors and other connectors, and relays."}
+{"question": "What is the precision level accuracy required for final level adjustment?", "answer": "The precision level accuracy required for final level adjustment is 0.02 mm (0.00079 in)/division."}
+{"question": "Why is it important to ground electrical devices?", "answer": "It is important to ground electrical devices to protect personnel and machines from electrical hazards."}
+{"question": "What is the requirement for grounding work in accordance with the standards for electrical equipment?", "answer": "The grounding work must be carried out by an officially authorized person in accordance with the class C grounding requirements, which require a grounding resistance of 10 ohms or lower."}
+{"question": "What is the importance of grounding in a CNC machine, and how should it be done?", "answer": "Grounding is crucial in a CNC machine to prevent serious injury, death, or accidents involving machine damage. It should be done by an officially authorized electrical engineer and must be grounded in one of two ways: independent grounding or common grounding."}
+{"question": "What is the purpose of connecting to the air source in a CNC machine?", "answer": "The purpose of connecting to the air source in a CNC machine is to power the air unit, which is essential for the machine's operation."}
+{"question": "What should be done before starting a test run on a CNC machine?", "answer": "Before starting a test run, ensure that the lifting fixture and shipping brackets are removed, all parts and accessories are present, the lubrication unit tank is filled with the specified oil, the hydraulic unit tank is filled with the specified oil, and all hoses and cables are correctly connected."}
+{"question": "Why is it essential to check the phase sequence of power supply before switching the power on in a CNC machine?", "answer": "It is essential to check the phase sequence of power supply to prevent trouble such as runaway of the machine and blowing of fuses."}
+{"question": "How often should the lubrication period be decided on in a CNC machine?", "answer": "The lubrication period should be decided on the basis of 8 hours operation a day."}
+{"question": "What is the recommended lubricant for the spindle lubrication point in a CNC machine?", "answer": "The recommended lubricant for the spindle lubrication point is SHELL TELLUS S2 M 32 MOBIL DTE24 HYSPIN AWS 32 (CASTROL)." }
+{"question": "What should be done during the breaking-in operation of a CNC machine?", "answer": "During the breaking-in operation, pay special attention to ensure the machine operates without abnormalities, and do not apply a large load to the machine."}
+{"question": "How long should the breaking-in operation be carried out for in a CNC machine?", "answer": "The breaking-in operation should be carried out for approximately 8 hours."}
+{"question": "What type of grease is recommended for the way cover pantograph?", "answer": "Molybdenum-based grease"}
+{"question": "How often should the pressure gauge in the hydraulic unit be replaced?", "answer": "Every 5 years"}
+{"question": "What is the purpose of the suction strainer in the hydraulic unit?", "answer": "To filter out impurities"}
+{"question": "What is the recommended replacement interval for the element ass'y in the air unit?", "answer": "Every 2 years"}
+{"question": "Why is it important to replace the strainer in the spindle cooling fluid tank?", "answer": "To prevent contamination of the cooling fluid"}
+{"question": "What is the recommended replacement interval for the filter set in the centralized lubrication unit?", "answer": "Every 3 years"}
+{"question": "How often should the operator's door window be replaced?", "answer": "As needed"}
+{"question": "What is the purpose of the X-axis wiper A in the way cover?", "answer": "To clean the X-axis"}
+{"question": "What is the recommended replacement interval for the Z-axis wiper B (spindle side) in the way cover?", "answer": "As needed"}
+{"question": "What is the purpose of the cable guide in the Z-axis cable guide?", "answer": "To guide cables"}
+{"question": "How often should the LED light in the machine light be replaced?", "answer": "As needed"}
+{"question": "What type of grease is recommended for the grease cartridge in the maintenance panel?", "answer": "CITRUX EP No. 1"}
+{"question": "How often should the air filter in the electrical control cabinet be replaced?", "answer": "As needed"}
+{"question": "What is the part number for the air filter in the electrical control cabinet?", "answer": "43110223540"}
+{"question": "Who is the manufacturer of the air filter in the electrical control cabinet?", "answer": "Yamazaki Mazak"}
+{"question": "How much time is required to replace the air filter in the electrical control cabinet?", "answer": "0.1 hours"}
+{"question": "What type of batteries are used in the battery unit of the electrical control cabinet?", "answer": "Size D alkaline batteries"}
+{"question": "How many batteries are used in the battery unit of the electrical control cabinet?", "answer": "Four batteries"}
+{"question": "What is the part number for the batteries used in the battery unit of the electrical control cabinet?", "answer": "D50FB002730"}
+{"question": "What is the recommended replacement interval for the batteries used in the battery unit of the electrical control cabinet?", "answer": "1 year"}
+{"question": "What is the time required to replace the batteries used in the battery unit of the electrical control cabinet?", "answer": "0.25 hours"}
+{"question": "What is shown in Fig. 7-2?", "answer": "The position of way cover"}