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mori seiki
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MSG-803
Maintenance Manual
89 pgs1.89 Mb0
Table of contents
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mori seiki MSC-802, MSC-801, MSG-500, MSX-511, MSX-500 Maintenance Manual

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MAINTENANCE MANUAL
The manuals for maintenance are comprised of the following three manuals including this manual: MAINTENANCE MANUAL, MAINTENANCE INFORMATION, and INSTALLATION MANUAL.
Applicable Model
NC LATHES
Applicable NC Unit
Before starting operation, maintenance, or programming, carefully read the manuals supplied by Mori Seiki, the NC unit manufacturer, and equipment manufacturers so that you fully understand the information they contain.
Keep the manuals carefully so that they will not be lost.
MM-CENL-H2EN
• The contents of this manual are subject to change without notice due to improvements to the machine or in order to improve the manual. Consequently, please bear in mind that there may be slight discrepancies between the contents of the manual and the actual machine. Changes to the instruction manual are made in revised editions which are distinguished from each other by updating the instruction manual number.
• Should you discover any discrepancies between the contents of the manual and the actual machine, or if any part of the manual is unclear, please contact Mori Seiki and clarify these points before using the machine. Mori Seiki will not be liable for any damages occurring as a direct or indirect consequence of using the machine without clarifying these points.
• All rights reserved: reproduction of this instruction manual in any form, in whole or in part, is not permitted without the written consent of Mori Seiki.
The product shipped to you (the machine and accessory equipment) has been manufactured in accordance with the laws and standards that prevail in the relevant country or region. Consequently it cannot be exported, sold, or relocated, to a destination in a country with different laws or standards.
The export of this product is subject to an authorization from the government of the exporting country.
Check with the government agency for authorization.
990730

CONTENTS

SIGNAL WORD DEFINITION
FOREWORD
A: DAILY INSPECTION
B: REGULAR INSPECTION
C: OUTLINE OF SYSTEMS
INDEX
HOW TO ORDER THE MACHINE PARTS

SIGNAL WORD DEFINITION

A variety of symbols are used to indicate different types of warning information and advice.
Learn the meanings of these symbols and carefully read the explanation to ensure safe operation while using this manual.
<Symbols related with warning>
The warning information is classified into three categories, DANGER, WARNING, and CAUTION.
The following symbols are used to indicate the level of danger.
DANGER
WARNING
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damages to the machine.
The information described following the caution symbol must be strictly observed.
<Other symbols>
Indicates the items that must be taken into consideration.
NOTE
Indicates useful guidance relating to operations.
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
The information described in the DANGER frame must be strictly observed.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
The information described in the WARNING frame must be strictly observed.
Indicates the page number or manual to be referred to.

FOREWORD

This maintenance manual describes the daily inspection procedure and regular inspection procedure.
Since the daily and regular inspections to be carried out by machine operators are very important in maintaining machine accuracy, operators are required to carry out proper inspection and maintenance in accordance with the details given in this manual.
For machine specifications, inspection, maintenance and installation information, specific to individual models, refer to the MAINTENANCE INFORMATION manual, DRAWINGS, PARTS LIST and INSTALLATION MANUAL published separately.
<Assumed machine operation methods>
NC lathes are machine tools intended to be used to cut blank workpieces of a machinable material, shape and mass, in a shop or plant which is suitable for the cutting operation.
Use of the NC lathe under criteria other than those stated above is considered inappropriate.
Mori Seiki is not responsible for any danger or damage arising from improper operation of the machine. Some examples of improper machine usage are indicated below.
(1) Adding any part to, or modifying, the machine without consulting Mori Seiki.
(2) Operating the machine outside the machining range.
(3) Improper use of a workpiece holding device or peripheral.
(4) Using the machine with interlocks or machine protection covers removed, or while the
machine is in an unusable state.
(5) Carrying out machine operation, programming, or maintenance and inspection work without
thoroughly understanding the caution information; i.e. without having read the instruction manuals carefully.
<Protection for machine operators>
Machine operators are responsible to the following.
(1) Carry out machine operation, programming, and maintenance and inspection work in
accordance with the details in the instruction manuals supplied with the machine.
(2) Only operators who have received proper training and have sufficient understanding of the
caution information are allowed to operate or program a machine tool or carry out inspection and maintenance on it. With regard to safety related measures, operators must receive training at least once a year.
(3) Develop a thorough understanding of, and strictly observe, the local regulations relating to the
prevention of accidents and environment conservation.
The illustrations in this manual are used as example. Depending on machines, shapes of
NOTE
systems may differ from the illustrations in this manual.
For details, refer to the DRAWINGS published separately.
CHAPTER A
DAILY INSPECTION

CONTENTS

A : DAILY INSPECTION
1. THE IMPORTANCE OF DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
2. NOTES ON INSPECTIONS AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
2.1 Work in General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
2.2 Work Inside the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
2.3 Machine Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
2.4 Oils Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
3. LUBRICATING AND HYDRAULIC OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
3.1 Storing Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
3.2 Cautions When Replenishing Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
4. SUPPLYING OIL IN DAILY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
4.1 Supplying Oil to the Lubricating Oil Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
4.2 Supplying Coolant to the Coolant Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
4.3 Greasing the Chuck Master Jaws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
5. INSPECTION OF THE CHUCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
6. CLEANING MACHINING CHAMBER/SETUP STATION . . . . . . . . . . . . . . . . . . . . . . . A-8
6.1 Cleaning the Front Cover of the Spindle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
6.2 Cleaning the Front Cover of the Tailstock (with Built-in Tailstock Spindle). . . . . . A-9
6.3 Cleaning the Slideway Protection Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
6.4 Cleaning the Front Door Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
6.5 Cleaning the Rear of the Cylinder (Hollow Chuck). . . . . . . . . . . . . . . . . . . . . . . A-10
7. CLEANING THE DRAIN OIL RECEIVER FOR THE LUBRICATING OIL . . . . . . . . . . A-11
8. CLEANING RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12
9. PRECAUTIONS WHEN USING CHIP CONVEYOR . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
9.1 Cleaning Chip Conveyor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14
10. OPENING/CLOSING THE ELECTRICAL CABINET DOOR . . . . . . . . . . . . . . . . . . . . A-15
10.1 Opening the Electrical Cabinet Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-15
10.2 Closing the Electrical Cabinet Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16
10.3 Main Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17
11. PREPARATION FOR MACHINE OPERATION AFTER
PROLONGED IDLE PERIOD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-19
DAILY INSPECTION A-1

1. THE IMPORTANCE OF DAILY INSPECTION

In order to operate the machine correctly and make the most of the machine's functions and performance, all operators must thoroughly understand the machine.
Daily lubrication and inspection by the operator and inspection by maintenance personnel at regular intervals maintain the accuracy of the machine over the long term.
If an abnormality is discovered during daily inspection, it must be reported to the supervisor and the person responsible for machine maintenance. Quick action should be taken.
If a problem that cannot be remedied by the user or whose cause cannot be determined occurs, contact Mori Seiki and the equipment manufacturers.
A-2 DAILY INSPECTION

2. NOTES ON INSPECTIONS AND MAINTENANCE

Pay adequate consideration to safety and hygiene when performing work such as machine inspections, setup, and cleaning, and implement appropriate safety and hygiene measures. Some points that require attention are cited below but note that other necessary measures must also be taken and the necessary training given to ensure the safety of the operator, before (s)he uses the machine.

2.1 Work in General

DANGER
WARNING
CAUTION
Protective circuits and protective covers are provided in order to - in all conceivable circumstances - prevent the operator from touching moving parts and live parts while power is supplied to the machine, but these devices cannot guarantee 100% safety. Exercise due care while operating the machine.
Always shut off the main power supply to the machine before cleaning the machine or the vicinity of the machine. Otherwise the machine could suddenly start operating during cleaning and the operator could be entangled or crushed in its moving parts, or lose balance and fall over.
When cleaning inside the machine, the operator could suffer injuries such as trauma, lacerations, contusions or broken bones, caused by tools or fixtures, workpieces, or projections, corners, or joints in the machine construction, or chips. Take care not to touch chips, tools, fixtures, workpieces, or the structural parts of the machine with bare hands. Wear appropriate protective gear for each kind of work, and ensure safety before starting work.

2.2 Work Inside the Machine

DAILY INSPECTION A-3
WARNING
(1) Confirm that the main power supply to the machine is shut off before
entering the machine to do work inside it. Be aware that if you close the machine door after entering the machine, it may not be possible to open the door from the inside. If the machine model used is equipped with a door lock prevention mechanism, take the door lock prevention key inside the machine when doing the work. At the same time, fit a padlock through the hole at the end of the lever of the door lock mechanism, and take steps to ensure that the door lock mechanism is not released by mistake. If the machine model used does not have a door lock prevention mechanism, avoid entering the machine as far as possible. If it is absolutely necessary to enter the machine, implement measures to ensure that the door will not be closed before starting the work.
(2) When entering the machine, make sure of your footing: take care that
you will not slip or stumble. Also select and wear appropriate safety gear, such as a helmet, safety shoes, protective goggles, and so on, as necessary, so as to ensure safety while working.
(3) If an operator is shut inside the machine, press the EMERGENCY
STOP button regardless of whether the power is ON or OFF, insert the key into the external key hole in the door lock device fitted to the machine cover, and turn the key to unlock the door and let the operator out.

2.3 Machine Management

CAUTION
(1) The customer must take responsibility for managing the keys that are provided
with the machine (for the operation panel, control panel, peripheral devices, etc.).
(2) Keys that do not have to be used on a regular basis, such as the control panel key,
must be removed from the lock and stored elsewhere. If the machine is operated with the key in the lock, people walking by could brush against the key, breaking it or injuring themselves.

2.4 Oils Used

CAUTION
The customers themselves must receive an MSDS (safety data sheet for e.g. chemical substances) for oils such as coolant (cutting fluid) and the various lubricants and cooling oils, and the customer must take responsibility for securing and managing the working environment, and for managing disposal of the oils. Take careful note of the effects on the human body described in the MSDS.
A-4 DAILY INSPECTION

3. LUBRICATING AND HYDRAULIC OIL

CAUTION
1. Always use oil types specified by Mori Seiki.
2. The customers themselves must receive an MSDS (safety data sheet for e.g.
For the type of oil to be used and tables comparing the oils produced by different manufacturers, refer to the OILING CHARTS and the Oil Recommendations in the MAINTENANCE INFORMATION published separately.

3.1 Storing Oil

If obtaining large amounts of oil for storage, observe the following points to prevent oil degradation. Obtaining limited amounts of oil only as required is strongly recommended.
Do not mix different brands of oil even when identified as being of "equivalent"
quality. When changing to a different brand of oil, drain all original oil from the tank
completely, clean the inside of the tank, and add replacement oil.
Mori Seiki is not responsible for problems arising from the mixture of different
brands of oil or the use of non-specified oils.
chemical substances) for oils such as coolant (cutting fluid) and the various lubricants and cooling oils, and the customer must take responsibility for securing and managing the working environment, and for managing disposal of the oils. Take careful note of the effects on the human body described in the MSDS.
Obtaining limited amounts of oil only as required is strongly recommended.
(1) Store oil in locations free from direct sunlight or rain.
(2) Keep oil clean. Foreign matter or water should not be allowed to enter the oil storage tank.
(3) Never use degraded oil or oil contaminated by foreign matter or water.
(4) If a storage tank is used, remove foreign matter and water from the tank at least once a year.

3.2 Cautions When Replenishing Oil

When replenishing oil, observe the following points:
(1) Always use the same oil can for specific oil brands. Never use a can used for a different
brand of oil.
(2) Never remove the filter from the filter port of each tank when supplying oil.
CAUTION
If oils other than those specified by Mori Seiki are used mistakenly or different brands of oil are mixed, clean the tank and flush piping immediately.

4. SUPPLYING OIL IN DAILY MAINTENANCE

4.1 Supplying Oil to the Lubricating Oil Tank

If the oil level in the lubricating oil tank drops, an alarm indication is given. If this low lubricating oil level alarm is given, supply lubricating oil.
<Procedure>
(Example: Showa Yuki 2 L)
1) Check the volume of oil in the lubricating oil tank with the oil level gage installed on the lubricating oil tank.
2) Remove the cap on the oil supply port.
3) Supply the specified lubricating oil by using the oil jug while checking the oil level with the oil level gage.
DAILY INSPECTION A-5

4.2 Supplying Coolant to the Coolant Tank

If the coolant level drops, an insufficient amount of coolant is supplied to the cutting tool. If cutting is continued under such conditions, accuracy will be impaired and tool life shortened. If coolant level drops, supply coolant to the coolant tank.
<Procedure>
1) Turn OFF the main power.
2) Wait until the coolant level is stabilized after all of the remaining coolant inside machine is returned to the coolant tank.
3) Check the volume of coolant in the coolant tank using the oil level gage.
For the name and volume of the cooling oil, refer to the OILING CHARTS in the MAINTENANCE INFORMATION published separately.
4) When coolant level is close to the red line on the oil level gage
Supply coolant to the red line on the oil level gage.
NOTE
Do not fill above the red line.
For the capacity of the coolant tank, refer to the OILING CHARTS in the MAINTENANCE INFORMATION published separately.
A-6 DAILY INSPECTION

4.3 Greasing the Chuck Master Jaws

If the master jaws are not lubricated properly with grease, the gripping force of the chuck will be reduced. If the spindle is rotated while the master jaws are not properly greased, the workpiece will fly out of the chuck, causing injuries and machine damage. Apply grease to the master jaws at least once a day, before starting the day's operation.
<Procedure>
1) Stop the spindle.
2) Turn off the power.
3) Supply grease from the grease cup around the chuck.
For the name and volume of the cooling oil, refer to the OILING CHARTS in the MAINTENANCE INFORMATION published separately.
CAUTION
Coolant splashed on the chuck will wash away the grease. Therefore, supply grease as often as possible.

5. INSPECTION OF THE CHUCK

<Daily oiling>
To maintain high chuck accuracy over a prolonged period, it is necessary to supply lubricating oil. Improper lubrication will cause the following problems.
• Faulty operation at low hydraulic pressure
• Insufficient gripping force
• Low gripping accuracy
• Abnormal wear
• Seizure
To avoid those problems, be sure to supply lubricating oil properly.
The diagram below indicates how greasing influences chuck gripping force by showing the relationship between the chuck gripping force and the spindle speed.
DAILY INSPECTION A-7
Example) SL-25MC, Chuck HOIMA10A6 (Howa), Cylinder HH4C-125 (Howa)
44.1
39.2
34.3
29.4
24.5
Gripping Force (kN (lbf))
19.6
14.7 0 500 1000 1500 2000 2500
Spindle Speed (min−1)
The diagram above is for reference purposes only. The actual gripping force will vary
NOTE
Greasing after disassembling and cleaning
After greasing
Before greasing
depending on the machine model, chuck and cylinder used by the customer. In any case, however, the chuck gripping force is reduced if the chuck is not greased properly. To obtain the correct chuck gripping force, it is necessary to grease the chuck at least once a day, before starting operation.
<Daily cleaning>
At the end of each day, when operation is completed, clean the chuck body and slideways.
A-8 DAILY INSPECTION

6. CLEANING MACHINING CHAMBER/SETUP STATION

To maintain machining accuracy for the optimum length of time, always clean the machining chamber and setup station daily following completion of machine operations.
DANGER
CAUTION
When inspecting and cleaning the machining chamber and setup station, turn OFF the main power and disconnect the plant-side power supply (breaker).
Do not use compressed air to clean the machining chamber and setup station.
If compressed air is used inside the machining chamber and setup station, chips and coolant may enter the spindle tapered section and bearings resulting in serious damage.

6.1 Cleaning the Front Cover of the Spindle

Dust and foreign matter will accumulate in the coolant holes on the front cover of the spindle allowing coolant to enter the bearings. This will cause the bearings to seize.
Clean the coolant holes in the front cover of the spindle at least once a week.
<Cleaning interval>
Every 50 hours of operation
CAUTION
Do not use compressed air to remove dust and foreign matter from the coolant holes. If compressed air is used, dust and foreign matter will enter the bearings.
Coolant discharging hole
DAILY INSPECTION A-9

6.2 Cleaning the Front Cover of the Tailstock (with Built-in Tailstock Spindle)

Dust and foreign matter will accumulate in the coolant holes on the front cover of the tailstock allowing coolant to enter the bearings. This will cause the bearings to seize.
Clean the coolant holes in the front cover of the tailstock at least once a week.
<Cleaning interval>
Every 50 hours of operation
CAUTION
Do not use compressed air to remove dust and foreign matter from the coolant holes. If compressed air is used, dust and foreign matter will enter the bearings.

6.3 Cleaning the Slideway Protection Covers

During dry cutting or when machining cast workpieces, carefully remove chips from the machine so that they do not accumulate.
Be aware that any chip accumulation on moving parts, such as the slideway protection covers, will interfere with proper operation and lead to mechanical problems.

6.4 Cleaning the Front Door Rail

If chips accumulate on the front door rail, the door will not open/close smoothly. Clean the front rail regularly.
<Cleaning interval>
Every 50 hours of operation
<Procedure>
1) Turn off the power.
2) Remove the chips that have accumulated on the front door rail.
A-10 DAILY INSPECTION

6.5 Cleaning the Rear of the Cylinder (Hollow Chuck)

Coolant and chips flow to coolant pan at the rear of the cylinder via the through hole in the draw pipe.
The coolant returns to the coolant tank via the drain hose.
Chips accumulate on the punched-metal sheet at the rear of the cylinder.
CAUTION
Remove chips from the punched-metal sheet every day. If chips are left to accumulate, coolant will overflow and spill onto the shop floor. Coolant will flow into the hydraulic oil tank via the cylinder drain, inhibiting proper machine operation.
<Procedure>
1) Turn off the power.
2) Remove the cylinder cover at the left side of the machine.
3) Remove the chips that have accumulated on the punched-metal sheet at the rear of the cylinder.
CAUTION
NOTE
Do not touch the chips bare handed.
Remove coolant and chips that have accumulated in the cylinder at regular intervals by detaching the rear cover of the cylinder.
DAILY INSPECTION A-11
7. CLEANING THE DRAIN OIL RECEIVER FOR THE
LUBRICATING OIL
If the drain oil receiver for the lubricating oil is at the rear or the side of the machine, dispose of the waste oil before the drain oil receiver becomes full. The drain oil receiver is provided to prevent lubricating oil being mixed into the coolant. It is effective when water-soluble coolant is used to prevent deterioration of the coolant due to mixing of lubricating oil.
(1) Because impurities are contained in the drain oil, do not reuse the oil in the lubrication
NOTE
tank. Always use fresh lubricating oil when replenishing the lubrication tank.
(2) Entrust the disposal of waste oil and coolant to a party qualified to dispose of
industrial wastes or a gas station with the appropriate facilities.
(3) The drain oil receiver is not available for some models.
These models collect the drain oil in the coolant tank.
For details on the disposal of waste oil, refer to FOREWORD in this manual.
A-12 DAILY INSPECTION

8. CLEANING RADIATOR

If the radiator on the hydraulic tank is clogged, the oil temperature rises resulting in unit failure.
Clean the radiator at regular intervals.
<Cleaning interval>
As required
<Necessary tools>
• Air gun
Radiator
<Procedure>
1) Turn OFF the main power.
2) Remove dust adhering to the radiator with a compressed air gun.
CAUTION
Protective glasses must be worn to prevent eye damage from dust or foreign matter (those who are wearing glasses included).
DAILY INSPECTION A-13

9. PRECAUTIONS WHEN USING CHIP CONVEYOR

WARNING
CAUTION
(1) Do not operate the chip conveyor or perform maintenance and
inspection tasks without reading and obtaining a thorough understanding of the contents of the chip conveyor instruction manual "COOLANT FILTER MANUAL" published separately.
(2) Keep the chip conveyor instruction manual "COOLANT FILTER
MANUAL" on hand to enable immediate reference when operating the chip conveyor and performing maintenance and instruction tasks.
(3) Do not place hands or feet inside the chip conveyor during operation
to prevent serious injury due to entanglement in rotating components or by being crushed between moving parts.
(1) Do not operate the chip conveyor intermittently.
Intermittent operation causes fine chips to accumulate between the belts and/or on
the conveyor bottom plates, resulting in conveyor malfunction such as tripping of
the thermal relay.
Always operate the chip conveyor continuously.
(2) The chip conveyor cannot carry materials larger than cutting chips.
If tools and other such materials are mistakenly placed on the conveyor during
operation, the chip conveyor will be damaged.
(1) Close the operator panel-side door before operating the chip conveyor.
NOTE
(2) The chip conveyor cannot discharge all types of chips. Carefully consider appropriate
cutting conditions to generate chips which can be removed from the machining chamber.
A-14 DAILY INSPECTION

9.1 Cleaning Chip Conveyor

<Cleaning interval>
Once or twice daily.
<Necessary tools>
• Rags
<Procedure>
CHIP CONVEYOR
FOR STOP BACK
1) Press the CHIP CONVEYOR [FOR] button on the operation panel.
The [FOR] button is illuminated.
The chip conveyor moves forward to discharge chips from machine.
2) Press the CHIP CONVEYOR [STOP] button.
The [STOP] button is illuminated.
The chip conveyor stops.
3) Place an adequate quantity of rags on the conveyor belt.
WARNING
Before placing rags on the conveyor belt, disconnect power to prevent entanglement of fingers and hands in the rotating unit or between moving parts, which may result in death or serious injury.
4) Press the CHIP CONVEYOR [BACK] button. The [BACK] button is illuminated.
Keep pressing the [BACK] button. The chip conveyor moves backward to discharge chips and rags out of the machine only when the button is pressed.
This completes the chip conveyor cleaning procedure.
For further details on the cleaning procedure, refer to the chip conveyor instruction manual "COOLANT FILTER MANUAL" published separately.
DAILY INSPECTION A-15

10. OPENING/CLOSING THE ELECTRICAL CABINET DOOR

DANGER
Before attempting maintenance and inspection inside the electrical cabinet, be sure to turn OFF the plant-side power supply (circuit breaker). Even when the main power switch on the electrical cabinet is turned OFF, parts of the cabinet may still hold residual current and give an electric shock if accidentally touched.
Do not touch devices installed inside the electrical cabinet at heights of 2 m or greater
NOTE
above the ground as these devices do not require maintenance or inspection.

10.1 Opening the Electrical Cabinet Door

<Procedure>
1) Turn OFF the main power.
CONTROL BOX
DOOR INTERLOCK
ON OFF
CAUTION
Place the control box door interlock switch installed in the electrical cabinet door in the [OFF] position when opening the electrical cabinet door with the main power ON.
2) Insert the key into the keyhole below the lever on the electrical cabinet.
3) Turn the key to release the electrical cabinet door lock. The lever is pushed outward when the key is inserted.
4) Turn the lever 90° counterclockwise.
A-16 DAILY INSPECTION
5) Open the electrical cabinet door.

10.2 Closing the Electrical Cabinet Door

1) Close the left side of the electrical cabinet door.
2) Close the right side of the electrical cabinet door.
3) Rotate the lever downward.
4) Push the lever inward.
5) Turn the key below the lever to lock the door.
6) Pull out the key.
The customer is responsible for supervising usage
NOTE
and safe storage of the key.
CONTROL BOX
DOOR INTERLOCK
ON OFF
7) Place the CONTROL BOX DOOR INTERLOCK switch installed on the electrical cabinet door in the
[ON] position.

10.3 Main Power Switch

DAILY INSPECTION A-17
WARNING
When electrical over-current occurs in the machine, the breaker is actuated, the power supply is automatically turned OFF, and the main power switch automatically moves to the [TRIP] setting.
To reset, return the handle to the [OFF] setting and then turn the handle back to the [ON] setting.
<How to Lock the Main Power Switch>
Lock the main power switch using the following procedure when performing maintenance procedures considered dangerous if the power is ON.
Type A
1) Place the main power switch in the [OFF] position.
2) Attach a padlock.
When the main power switch is locked, maintenance procedures are performed. Do not place the main power switch in the [ON] position.
Refer to the OPERATION MANUAL published separately for details on turning the power ON and OFF.
Type B
1) Place the main power switch in the [OFF] position.
2) Pull out the lock plate.
3) Attach a padlock.
Lock plate
A-18 DAILY INSPECTION
Type C
1) Place the main power switch in the [OFF] position.
2) While pushing the shutter plates in the direction of arrows, attach a padlock.
Type D
Shutter plate
1) Place the main power switch in the [OFF] position.
2) Put a driver into the release screw.
When the release screw is not prepared, just pull out the lock plate.
NOTE
3) While turning the driver CCW, pull out the lock plate.
4) Attach a padlock.
Driver
Lock plate
DAILY INSPECTION A-19

11. PREPARATION FOR MACHINE OPERATION AFTER PROLONGED IDLE PERIOD

Perform the following operations in the order specified after the machine has been idle for a
*
prolonged period of time
(1) Forced lubrication of ball screws and spindle bearings.
(2) Full stroke travel of all axes.
(3) Spindle warm-up
.
NOTE
*
Prolonged period of time: Two days or more
<Forced lubrication of ball screws and spindle bearings>
Press the manual lubrication button on the lubrication tank for more than 10 seconds. Lubricant is supplied to the nuts on the ball screws and the spindle bearings.
Manual lubrication button
CHAPTER B
REGULAR INSPECTION
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