Lincoln Electric POWER WAVE SVM173-A User Manual
Power wave 455m/stt, Svm173-a, Service manual
SVM173-A
April, 2007
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be in-
creased by proper installation . . .
and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.
And, most importantly, think
before you act and be careful.
SERVICE MANUAL
For use with machines having Code Numbers:
10942 10957
11007 11008
11057 11153
11152
POWER WAVE 455M/STT
TM
POWER
WA
VE
455
I ON
O
OFF
POWER
WA
VE
455
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Document Outline
- Master Table of Contents
- Safety
- Section A - Installation
- Section B - Operation
- Section C - Accessories
- Section D - Maintenance
- Section E - Theory of Operation
- Section F - Troubleshooting and Repair
- Symptoms
- The input fuses repeatedly fail or the input circuit breakers keep tripping.
- The machine is dead—no lights— no output—the machine appears to be off.
- The Power Wave 455M does not have welding output. The main input contactor CR1 is not activating. Fan may be running.
- The thermal light is lit. The machine regularly "overheats."
- The machine often "noodle welds" when running a particular process. The output is limited to approximately 100 amps.
- The machine often "noodle welds" when running an STT process.
- The Power Wave 455R will not produce full output.
- The Auxiliary Receptacle is "dead." The 120VAC is not present at the receptacle.
- The Power Wave 455M is "triggered" for output but there is no welding output.
- When in the STT mode, the spatter is higher than normal and the arc is inconsistent.
- Section G - Electrical Diagrams