Lincoln Electric IM788 SP-135 Plus - Manual (Page 31)

E-4 E-4 TROUBLESHOOTING
Observe Safety Guidelines
detailed in the beginning of this manual. TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
Arc is unstable – Poor starting
POSSIBLE AREAS OF
MISADJUSTMENT(S)
1. Check for correct input voltage
to machine – 115 vac.
2. Check for proper electrode
polarity for process.
3. Check gun tip for wear or dam-
age – Replace.
4. Check for proper gas and flow
rate for process.
5. Check work cable for loose or
faulty connections.
6. Check gun for damage or
breaks.
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
WELDING PROBLEMS
If for any reason you do not understand the test procedures or are unable to Perform the tests/repairs safely, contact your
LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
Low or no gas flow when gun
trigger is pulled. Wire feed, weld
output and fan operate normally.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
1. Check gas supply, flow regulator
and gas hoses.
2. Check gun connection to
machine for obstruction or leaky
seals.
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
GAS FLOW PROBLEMS
SP-135 PLUS