Lincoln Electric RANGER SVM148-B Service Manual page 69

F-10
OBSERVE SAFETY GUIDELINES
DETAILED IN THE BEGINNING OF THIS MANUAL.
PROBLEMS
(SYMPTOMS)
No constant voltage (CV) welding
output. Constant current (CC) and
auxiliary power are operating nor-
mally.
The constant voltage (CV) welding
output is low or
Constant current (CC) and auxiliary
power are operating normally.
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
1-800-833-9353.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Make sure the range switch (S2)
is in the proper position and
"seated" correctly.
2. Make sure the wire feeder and
welding cables are connected
correctly.
1. Make sure the range switch and
unstable. polarity switch are in the correct
position (CV) and "seated" cor-
rectly.
2. Make sure the wire feeder and
welding cables are connected
correctly.
CAUTION
RANGER 300 D AND 300 DLX
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Check the operation of the
range switch (S2) and check the
associated wires for loose or
faulty connections.
Wiring Diagram.
2. Check the continuity from leads
C1 to lead W1 located in the
main stator. See the Wiring
Diagram. On DLX machines,
also check leads C2, C3, and
C4 to lead W1.
3. On DLX machines, check the
capacitors and associated
leads. See the Wiring Diagram.
1. Check the operation of the
range switch (S2) and check the
associated wires for loose or
faulty connections.
Wiring Diagram.
2. On DLX machines the capacitor
bank (C2, C3, C4, and C5) may
be faulty. Check or replace.
F-10
See the
See the