Lincoln Electric 10372 Service Manual page 70

F-6
POWER W VE
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
The Power Wave has no output --
the fan is running -- a "clicking"
sound may be heard coming from
the machine. The main contactor
CR1 is not "pulling in". If the
STATUS LED is not steady green,
see LED Code Table.
The fan runs slow or intermittently
-- low or no weld output.
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 1-888-935-3877.
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TROUBLESHOOTING ND REP IR
POSSIBLE
MIS DJUSTMENT(S)
OUTPUT PROBLEMS (Continued)
1. Turn the input power OFF
immediately.
2. Make certain the reconnect
panel is configured correctly for
the applied input voltage.
3. If the machine is connected for
380 VAC or higher and has not
been used for a long period of
time, the capacitors may
require "conditioning". Let the
Power Wave 455 run at an idle
state for 30 minutes.
1. Make certain the reconnect
panel is configured correctly.
C UTION
POWER W VE 455/POWER FEED 10
RE S OF RECOMMENDED
COURSE OF
1. Perform the T1 uxiliary
Transformer Test.
2. Perform the Main Contactor
Test.
3. Perform the Input Rectifier
Test.
4. Perform the Switch Board
Test.
5. The power board rectifier may
be faulty. Check or replace.
Also check associated wiring.
See wiring diagram.
6. Perform the Power Board Test.
7. The input voltage board may be
faulty.
8. The control board may be
faulty.
1. Perform the T1 uxiliary
Transformer Test.
2. The power board rectifier may
be faulty. Check or replace.
F-6
CTION