Filter
Top Products
POWER-ARC 4000
F-10
TROUBLESHOOTING
F-10
TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the
Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353
WELDING PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
The welding arc is “cold.” The
engine runs normally (3700 RPM,
no load). Auxiliary power is func-
tioning normally.
1. Check for the correct open cir-
cuit voltage (OCV) at the welder
output terminals – 62 VAC is
normal.
If the correct voltage is present
at the output terminals, check for
loose connections on the heavy
current-carrying leads inside the
POWER-ARC 4000. See the
Wiring Diagram.
2. If the OCV is low at the welder
output terminals, perform
Engine Throttle Adjustment
Test.
3. Check for shorted or grounded
windings in the reactor (L1) and
also in the main stator.
See the Wiring Diagram.
1. Check for loose or faulty con-
nections at the weld output
terminals and welding cable
connections.
2. The welding cable may be too
long or coiled, causing an exces-
sive voltage drop.
CAUTION
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC