Mazak VTC-160A, Maintenance Manual, Page: 9 / 96

CAUTION :
1) During automatic operation, never open the
machine door. Machines equipped with the
door interlock will set the program to single
step.
2) When performing heavy-duty machining,
carefully prevent chips from being accumulated
since hot chips from certain materials can
cause a fire.
• TO INTERRUPT MACHINING
WARNING :
When leaving the machine temporarily after
completing a job, turn off the power switch on
the operation panel, and also the main circuit
breaker.
• COMPLETING A JOB
CAUTION :
1) Always clean the machine or equipment.
Remove and dispose of chips and clean cover
windows, etc.
2) Make sure the machine has stopped running,
before cleaning.
3) Return each machine component to its initial
condition.
4) Check the wipers for breakage. Replace
broken wipers.
5) Check the coolant, hydraulic oils and lubricants
for contamination. Change them if they are
seriously contaminated.
6) Check the coolant, hydraulic oil and lubricant
levels. Add if necessary.
7) Clean the oil pan filter.
8) Before leaving the machine at the end of the
shift, turn off the power switch on the operating
panel, machine main circuit breaker and factory
feeder switch in that order.
• SAFETY DEVICES
1) Front cover, rear cover and coolant cover.
2) Chuck barrier, tail barrier and tool barrier (NC
software).
3) Stored stroke limit (NC software).
4) Emergency stop pushbutton switch.
• MAINTENANCE OPERATION PREPARATIONS
1) Do not proceed to do any maintenance
operation unless instructed to do so by the
foreman.
2) Replacement parts, consumables (packing, oil
seals, O rings, bearing, oil and grease, etc.)
Should be arranged in advance.
3) Prepare preventive maintenance and record
maintenance programs.
CAUTION :
1) Thoroughly read and understand the safety
precautions in the instruction manual.
2) Thoroughly read the whole maintenance
manual and fully understand the principles,
construction and precautions involved.
• MAINTENANCE OPERATION
DANGER :
1) Those not engaged in the maintenance work
should not operate the main circuit breaker or
the control power "ON" switch on the
operating panel. For this purpose, "Do not
Touch the Switch, Maintenance Operation in
Progress!" or similar warning should be
indicated on such switches and at any other
appropriate locations. Such indication should
be secured by a semi-permanent means in the
reading direction.
2) With the machine turned on, any maintenance
operation can be dangerous. In principle, the
main circuit breaker should be turned off
throughout the maintenance operation.
WARNING :
1) The electrical maintenance should be done by
a qualified person or by others competent to do
the job. Keep close contact with the
responsible person. Do not proceed alone.
2) Overtravel limit and proximity switches and
interlock mechanisms including functional parts
should not be removed or modified.
3) When working at a height, use steps or ladders
which are maintained and controlled daily for
safety.
4) Fuses, cables, etc. made by qualified
manufacturers should be employed.
• BEFORE OPERATION & MAINTENANCE BEGINS
WARNING:
1) Arrange things in order around the section to
receive the maintenance, including working
environments. Wipe water and oil off parts and
provide safe working environments.
2) All parts and waste oils should be removed by
the operator and placed far enough away from
the machine to be safe.
CAUTION:
1) The maintenance person should check that the
machine operates safely.
2) Maintenance and inspection data should be
recorded and kept for reference.
000X717-KY 11/98
S-3
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