Lincoln Electric IM924 POWER WAVE 455M_STT - Manual (Page 35)

E-4 TROUBLESHOOTING E-4
POWER WAVE 455M/STT (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
Major physical or electrical dam-
age is evident when the sheet
metal covers are removed.
Input fuses keep blowing, or input
breaker keeps tripping.
Machine will not power up (no
lights, no fan, etc.)
1. Contact your local authorized
Lincoln Electric Field Service
facility for technical assis-
tance.
1. Make certain that fuses or
breakers are properly sized.
See Installation section of this
manual for recommended fuse
and breaker sizes.
2. Welding procedure is drawing
too much output current, or
duty cycle is too high. Reduce
output current, duty cycle, or
both.
3. There is internal damage to
the power source. Contact an
authorized Lincoln Electric
Service facility.
1. Make certain that the Power
Switch (SW1) is in the
“ ON ”
position.
2. Circuit breaker CB4 (in recon-
nect area) may have opened.
Reset. Also, check input volt-
age selection, below.
3. Input voltage selection made
improperly. Power down,
check input voltage reconnect
according to diagram on
reconnect cover.
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact your local Lincoln
Authorized Field Service Facility.