E-2
TROUBLESHOOTING
E-2
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility
for technical troubleshooting assistance before you proceed.
CAUTION
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Major physical or electrical damage
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)
Machine won
’
t weld, can
’
t get any
output.
Thermal symbol is lit
1. Contact your local authorized
Lincoln Electric Field Service
facility for technical assistance.
1. Make certain that the fuses or
breakers are properly sized. See
installation section of the 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 autho-
rized Lincoln Electric Service
facility.
1. Make certain that the power
switch is in the "ON" position.
2. Input voltage selection made
improperly. Power down, check
input voltage reconnect accord-
ing to diagram on reconnect
cover.
1. If the displays show an Err ###
see the fault section for correc-
tive action.
2. If the displays are not lit refer to
machine will not power up sec-
tion.
3. If the thermal symbol is lit refer to
the thermal section.
1. Check for proper fan operation
2. Check for material blocking
intake or exhaust louvers.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
POWER MIG 300
Summary of Contents for POWER MIG 300
Page 43: ...DIMENSION PRINT F 5 POWER MIG 300 F 5 3 00F M19231 ...
Page 44: ...NOTES POWER MIG 300 ...
Page 45: ...NOTES POWER MIG 300 ...
