Lincoln Electric WIRE-MATIC 255 SVM 119-A Service Manual page 56

F-5
TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
The output voltage and wire feed is
present continuously or pulsing
when gun trigger is NOT activated.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-
383-2531 or 1-800-833-9353
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
OUTPUT PROBLEMS
1. Remove the gun. If the problem
is resolved the gun trigger circuit
is faulty. Repair or replace.
2. If the problem is not resolved
then contact your Local Lincoln
Electric Authorized
Service Facility.
CAUTION
WIRE-MATIC 255
RECOMMENDED
COURSE OF ACTION
1. Check the machine's internal
trigger leads for grounds or
shorts. See Wiring Diagram.
2. The control board may be faulty.
Replace.
Field
F-5