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TROUBLESHOOTING & REPAIR
F-6 F-6
PRO-CUT 55
Observe Safety Guidelines
TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
CAUTION
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.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
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.
1. Make sure the air pressure is
set at 70 psi (448 kPa.) and the
flow rate is at 6 CFM.
2. Make sure the torch consum-
ables are in place and in good
condition.
3. Make sure the air flow is not
restricted.
4. Make sure the air hose and
screen are not clogged.
1. Perform the Torch Continuity
and Solenoid Test.
2. The output board may be faulty.
Replace.
3. The control board may be
faulty. Replace.
Nuisance safety trips 1. See Safety Status Indicator in
the operation section.
2. Make sure the correct nozzles
are being used for the material
thickness. See Operation
Section.
3. Make sure the output control is
set correctly for the process.
1. The torch may be faulty. Check
or replace.
2. The control board may be
faulty. See Torch Continuity
and Solenoid Test.
The cutting arc starts but sputters
badly.
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.) and the
flow rate is at 6 CFM.
6. Make sure the air hose and
screen are not clogged.
1. Perform the Torch Continuity
and Solenoid Test.
2. The output board may be faulty.
Replace.
3. The control board may be
faulty. Replace.