Troubleshooting Guide - Lincoln Electric PRECISION TIG 375 Service Manual

F-4
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The machine is dead. No weld out-
put – no 115 VAC at the receptacle.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Check the input voltage.
input voltage must match the rat-
ing plate and the voltage connec-
tion. Refer
Procedure in the Installation
section of this manual.
2. Make sure that the input power
switch is in the "ON" position.
3. Check for blown or missing
fuses in the input lines.
4. Check circuit breaker CB1.
Reset if necessary.
CAUTION
PRECISION TIG 375

TROUBLESHOOTING GUIDE

RECOMMENDED
COURSE OF ACTION
The 1. Check the input power switch,
reconnect panel and associated
wires for loose or faulty connec-
to Reconnect tions.
2. The input power switch may be
faulty.
3. Perform the T1 Transformer
Test.
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