Lincoln Electric VANTAGE 400 Operator's Manual page 37

VANTAGE 400
PROBLEMS
(SYMPTOMS)
The welding arc is "cold." The welding arc
is not stable or is not satisfactory. the
engine runs normally. The auxiliary power is
normal.
No output in Pipe Mode.
VRD Lights don't light up.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized
Field Service Facility for technical troubleshooting assistance before you proceed.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
1. Make sure the MODE selector switch is in
the correct position for the process being
used. (For example, CV-WIRE, PIPE, CC-
STICK.)
2. Make sure the electrode (wire, gas, voltage,
current etc.) is correct for the process
being used.
3. Check for loose or faulty connections at the
weld output terminals and welding cable
connections.
4. The welding cables may be too long or
coiled, causing an excessive voltage drop.
5. Faulty Control Board.
1. Make sure VRD ON/OFF toggle switch is in
the "OFF" position.
2. Poor work lead connection to work. Make
sure work clamp is tightly connected to
clean base metal.
3. "Weld Terminals" switch in wrong posi-
tion. Place switch in "Weld Terminals On"
position when welding without control
cable.
4. Faulty PC board or welder alternator.
1. Ensure VRD ON/OFF switch is in the "ON"
position.
2. If light is burned out, replace both VRD
lights.
3. Faulty OCV indicator PC board.
E-6
COURSE OF ACTION
If all recommended possible areas of mis-
adjustment have been checked and the
problem persists, Contact your local
Lincoln Authorized Field Service Facility.
CAUTION
TROUBLE SHOOTING
RECOMMENDED