Troubleshooting and repair, Caution – Lincoln Electric SVM143-A User Manual
Page 50
F-6
TROUBLESHOOTING AND REPAIR
F-6
DH-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
No control of wire feed speed on
both sides. Both motors run, both
solenoids operate and arc voltage
is present. The WFS can be preset
on both sides.
The wire feeds and the gas sole-
noid operates but no arc voltage is
present.
1. Check the tach leads between
the tach (hall effect devices)
and the control board. See the
Wiring Diagram.
1. Make certain the electrode and
work cables are connected
correctly.
2. Make certain the control cable
between the DH- 10 and the
power source is in good working
condition.
3. Make certain the power source
is operating properly and capa-
ble of producing welding voltage
and current.
1. Perform the
2. Perform the
3. The control board may be
defective.
1. Check the continuity (zero
ohms) of leads #2 and #4
between the input cable recep-
tacle and plug j8 on the control
board. See the Wiring Diagram.
2. The control board may be
faulty.
FUNCTION PROBLEMS (Continued)
CAUTION
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 216-383-2531 or 1-800-833-9353.
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