Lincoln Electric POWER WAVE IM986 Operator's Manual page 42

E-5
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
Major physical or electrical damage
is evident when the sheet metal
covers are removed.
Input fuses keep blowing
Machine will not power up (no
lights)
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
None
1. Improperly sized input fuses.
2. Improper Weld Procedure
requiring output levels in
excess of machine rating.
3. Major physical or electrical
damage is evident when the
sheet metal covers are
removed.
1. No Input Power.
2. Fuse F1 (in reconnect area)
may have blown.
3. Circuit breaker CB1 (on the
control panel) may have
tripped.
4. Improper input voltage selec-
tion (multiple input voltage
machines only).
POWER WAVE® i400
detailed in the beginning of this manual.
CAUSE
1.
1.
2.
3.
1.
2.
3.
4.
Observe Safety Guidelines
RECOMMENDED
COURSE OF ACTION
Contact your local authorized
Lincoln Electric Field Service
facility for technical assis-
tance.
Make sure fuses are properly
sized. See installation section
of this manual for recom-
mended sizes.
Reduce output current, duty
cycle, or both.
Contact your local authorized
Lincoln Electric Field Service
facility for technical assis-
tance.
Make sure input supply dis-
connect has been turned ON.
Check input fuses. Make cer-
tain that the Power Switch
(SW1) on the power source is
in the "ON" position.
Power Down and replace the
fuse.
Power Down and reset CB1.
Power down, check input volt-
age reconnect according to
diagram on reconnect cover.
E-5