E-5
TROUBLESHOOTING
E-5
POWER WAVE® 655/R
Observe all Safety Guidelines detailed throughout this manual
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Machine often “noodle welds” (out-
put is limited to approximately 100
amps) when running a particular
procedure
Machine won’t produce full output.
For no apparent reason, the weld-
ing characteristics have changed.
Auxiliary receptacle is “dead” — no
auxiliary voltage .
The PowerWave is triggered to
weld, but there is no output.
1. Secondary current limit has
been exceeded, and the
machine has phased back to
protect itself. Adjust procedure
or reduce load to lower current
draw from the machine.
1. Input voltage may be too low,
limiting output capability of the
power source. Make certain
that the input voltage is proper,
according to the Rating Plate
located on the rear of the
machine.
2. Input may be “single phased”.
Make certain the input voltage
is proper on all three input
lines.
1. Check for pr oper Wire Fee d
Speed setting. In CV MIG and
FCAW modes, check for prop-
er Voltage setting. In the
MIG/MAG pulse modes, check
the Trim setting. These con-
trols are on the wire feeder.
2. Check for proper shielding gas
mix and flow.
3. Check for loose or faulty weld
cables and cable connections.
1. Circuit breaker CB2 (on case
front) may have opened.
Reset.
2. Cir cuit br eak er CB4 (Cod es
10630, 10863) (in reconnect
area) may have opened.
Reset.
10A Fuse(Code 11410) (in
reconnect area) may have
blown out. Replace.
1. Check for fault signals from the
I/O connector. Possible faults
are lack of water flow
2. Circuit breaker CB4 (in recon-
nect area) may have opened.
Reset.
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact your local Lincoln
Authorized Field Service Facility.