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SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Only Qualified personnel should
perform this maintenance.
• Turn the input power OFF at the
disconnect switch or fuse box
before working on this equipment.
• Do not touch electrically hot parts.
ROUTINE AND PERIODIC
MAINTENANCE
1. Disconnect input AC power supply lines to the
machine before performing periodic maintenance,
tightening, cleaning, or replacing parts. See
Figure D.1.
PERFORM THE FOLLOWING DAILY:
1. Check that no combustible materials are in the
welding or cutting area or around the machine.
2. Remove any debris, dust, dirt, or materials that
could block the air flow to the machine for cooling.
3. Inspect the electrode cables for any slits or punc-
tures in the cable jacket, or any condition that
would affect the proper operation of the machine.
PERFORM PERIODICALLY:
Clean the inside of the machine with a low pressure air
stream. Clean the following parts. Refer to Figure
D.1.
• Transformer and output rectifier assembly.
• Electrode and work cable connections.
• PC board connections..
• Intake and outlet louvers on the machine case.
• Any obvious accumulations of dirt within the
machine.
• Fan Assembly.
NOTE: The fan motor has sealed bearings which
require no maintenance.
D-2 D-2
MAINTENANCE
POWER WAVE 455/R
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WARNING