Lincoln Electric POWER WAVE R450 Operator's Manual page 41

POWER WAVE R450
PROBLEMS
(SYMPTOMS)
Thermal LED is ON
Thermal LED is ON
"Real Time Clock" no longer functioning
General degradation of weld performance
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
Improper fan operation
Basic Machine Problems (Continued)
1. Improper fan operation.
2. Open thermostat circuit.
1. Control PC Board Battery.
Weld and Arc Quality Problems
1. Wire feed problem.
2. Cabling problems.
3. Loss of, or improper Shielding Gas.
4. Verify weld mode is correct for process.
5. Machine calibration.
E-6
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION
1. Check for proper fan operation. Fan
should run in a low speed setting when
the machine is idle and increase in
speed as the machine temperature
increases. Check for material blocking
intake or exhaust louvers, or for exces-
sive dirt clogging cooling channels in
machine.
2. Check for broken wires, open connec-
tions or faulty thermostats in the ther-
mostat circuit.
1. Replace the battery (Type: BS2032)
1. Check for feeding problems.
2. Check for bad connections, excessive
loops in cable, etc.
NOTE: The presence of heat in the exter-
nal welding circuit indicates poor connec-
tions or undersized cables.
3. Verify gas flow and type are correct.
4.Select the correct weld mode for the
application.
5. The power source may require calibra-
tion. (current, voltage, WFS).