Lincoln Electric PRO-CUT 55 Service Manual page 44

F-6
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The air begins to flow when the
torch trigger is pulled. There is a
very brief pilot arc. (Normal is 3
seconds.) The sequence is repeat-
ed with subsequent trigger pulls.
The cutting arc starts but sputters
badly.
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
216-383-2531 or 1-800-833-9353.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS
1. Make sure the air pressure is
set at 70 psi (448 kPa.)
2. Make sure the torch consum-
ables are in place and in good
condition.
3. Make sure the air flow is not
restricted.
1. Make sure the operating proce-
dure is correct for the process.
See the Operation section of
this manual.
2. Make sure the work clamp is
connected tightly to the work-
piece.
3. Make sure the torch consum-
ables are in place and in good
condition.
4. Make sure the air supply is not
contaminated with oil or exces-
sive water.
5. Make sure the air pressure is
set at 70 psi (448 kPa.)
CAUTION
PRO-CUT 55
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Perform the Torch Continuity
and Solenoid Test.
2. The output board may be faulty.
Replace.
3. The control board may be
faulty. Replace.
1. Perform the Torch Continuity
and Solenoid Test.
2. The output board may be faulty.
Replace.
3. The control board may be
faulty. Replace.
F-6