Lincoln Electric IM807 POWER WAVE 455M - Manual (Page 35)

E-5 TROUBLESHOOTING E-5
POWER WAVE 455M (CE)
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 AREAS OF
MISADJUSTMENT(S) RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Machine won’t weld, can’t get any
output. (CR1 will not pull in.)
Machine often “noodle welds” (out-
put is limited to approximately 100
amps) when running a particular
procedure, especially a procedure
with high WFS.
1. Input voltage is too low or too
high. Make certain that input
voltage is proper, according to
the Rating Plate located on the
rear of the machine.
2. If the Thermal LED is also lit,
see “Yellow Thermal LED is Lit”
section.
3. Primary current limit has been
exceeded. Possible short in out-
put circuit. Turn machine off.
Remove all loads from the out-
put of the machine. Turn back
on. If condition persists, turn
power off, and contact an autho-
rized Lincoln Electric Field
Service facility.
4 . This problem will normally be
accompanied by an error code.
Error codes are displayed as a
series of red and green flashes by
the status light. See
"Troubleshooting the Power Wave
/ Power Feed System Using the
Status LED" section of this text.
1.Secondary current limit has been
exceeded, and the machine has
phased back to protect itself.
2. Adjust procedure or reduce load
to lower current draw from the
machine.
3. A single phase input (loss of L2)
will reduce the secondary cur-
rent limit from 570 Amps to 325
Amps.
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact your local Lincoln
Authorized Field Service Facility.