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TROUBLESHOOTING
E-7 E-7
POWER WAVE 450
The Beeper (Piezoelectric Buzzer) cannot be
heard – machine operating normally.
The welding parameters that were
saved in memory are different
when recalled.
The water cooler does not turn on.
The machine beeps without the
keys being pressed.
1. Background noise may be too loud for user
to hear beeper.
1. Make certain that a remote control unit is
not connected. When a remote control unit is
used, the weld parameters are set by the
remote control potentiometers.
1. Make sure that the water cooler has been
enabled. Refer to the Setup Overlay descrip-
tion in the Operation Section of this manual.
2. If the water cooler is enabled but there is
insufficient pressure in the water cooler hose,
the machine will beep loudly and the water
cooler will shut down. In this case, prime the
water cooler. Refer to the Setup Overlay
description in the Operation Section of this
manual.
If the water cooler is enabled and the pres-
sure switch inside the water cooler opens (due
to inadequate pressure in the water cooler
hose), the machine indicates this by beeping.
This happens regardless of the overlay placed
on the machine. In this case do the following:
1. Turn the machine off and on a couple of
times and see if the beeping continues. If the
pressure dropped momentarily then turning
the machine off and on eliminates the beep-
ing. A momentary pressure drop could be due
to someone stepping on the water cooler
hose, for example.
2 Check the water cooler hose for kinks and
other places of reduced water flow. If such
problems were found then correct them and
turn the machine off and on to check if the
beeping has been eliminated.
3. Check the water cooler fluid level. Low fluid
level could cause the pressure to drop.
4. Prime the water cooler. Refer to the Setup
Overlay section of this manual for instructions.
If all recommended possible areas
of misadjustments have been
checked and the problem per-
sists, contact your local Lincoln
Authorized Field Service Facility.
TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS