Lincoln Electric POWER WAVE R450 Operator's Manual page 40

POWER WAVE R450
PROBLEMS
(SYMPTOMS)
Input fuses keep blowing
Machine will not power up (no lights)
Machine won't weld, can't get any output.
This problem will normally be accompa-
nied by an error code. See "Status Light"
section of this document for additional
information.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
Basic Machine Problems
1. Improperly sized input fuses.
2. Improper Weld Procedure requiring out-
put levels in excess of machine rating.
3. Major physical or electrical damage is
evident when the covers are removed.
1. No Input Power
2. Input voltage is too low or too high.
1. Input voltage is too low or too high.
2. Thermal Error.
3. Secondary current limit has been
exceeded. (see error 54)
3a. Input control board fault (see input
control board error status).
E-5
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION
1. Make sure fuses are properly sized. See
installation section of this manual for
recommended sizes.
2. Reduce output current, duty cycle, or
both.
3. Contact your local authorized Lincoln
Electric Field Service facility for techni-
cal assistance.
1. Make sure input supply disconnect has
been turned ON. Check input fuses.
Make certain that the Power Switch
(SW1) on the power source is in the
"ON" position.
2. Make certain that input voltage is cor-
rect, according to the Rating Plate locat-
ed on the rear of the machine.
1. Make certain that input voltage is cor-
rect, according to the Rating Plate locat-
ed on the rear of the machine.
2. See "Thermal LED is ON" section.
3. Possible short in output circuit. If con-
dition persists, contact an authorized
Lincoln Electric Field Service facility.