Thermal Arc ULTRA FLEX 350, Owner'S Manual

Page: 35 / 50

MAINTENANCE
If this equipment does not operate properly, stop
work immediately and investigate the cause of the
malfunction. Maintenance work must be performed
by an experienced, qualified person only. Any elec-
trical work must be performed by an electrician or
other person properly trained in servicing electrical
equipment. Do not permit untrained persons to in-
spect, clean or repair this equipment. Use only
recommended replacement parts when servicing
this machine.
DANGER: HIGH VOLTAGE may be present inter-
nally even with the power switch in the OFF position.
Before inspecting, cleaning, or servicing, discon-
nect and lock out input power to the power source.
For uninterrupted, satisfactory service from this
welding machine, it is necessary to keep the ma-
chine clean, dry, and well ventilated. At least every
three months, or more often as necessary, wipe and
blow out all dirt from the machine’s interior, with air
pressure of not over 25 psi.
As normal preventive maintenance, at the time of
the three-month cleaning, a full inspection of the
welding machine and setup should be performed.
Check warning labels on the machine for readabil-
ity; replace if necessary. Check input and output
connections as well as frame ground connections
to the machine to insure that they are tight and the
wires are not frayed or overheated. Inspect internal
wiring of machine for loose or frayed connections;
tighten or repair as necessary. It would also be
advisable to check connections to wire feeders,
fixtures, etc., at this time. Any damaged cables or
hoses should be replaced.
430429-465
MAINTENANCE
February 28, 2000 6-1