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SECTION 5 − MAINTENANCE & TROUBLESHOOTING
5-1. Routine Maintenance
3 Months
Replace
unreadable
labels.
6 Months
Blow out or vacuum inside.
During heavy service, clean
monthly
5-2. Troubleshooting Table
Trouble
No weld output; unit completely
inoperative.
No weld output; Power switch pilot light
on.
Unit provides only maximum or
minimum weld output.
Erratic or improper weld output.
No 115 volts ac output at duplex
receptacle RC9.
No 36 volts ac output at simplex
receptacle RC10.
Fan not operating.
.
Fan runs only when cooling is
necessary.
Y Disconnect power before maintaining.
Repair or
replace
cracked
weld
cable.
Or
Place line disconnect switch in On position (see Section 3-13).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 3-13).
Check for proper input power connections (see Section 3-13).
Check, repair, or replace feeder (see wire feeder Owner's Manual).
Unit overheated. Allow unit to cool with fan On (see Section 3-2).
Have Factory Authorized Service Agent check control board PC1 and/or motor drive board PC2.
Have Factory Authorized Service Agent check control board PC1, motor drive board PC2 and Hall
Device HD1.
Use proper size and type of weld cable (see Section 3-8).
Clean and tighten all weld connections.
Check wire feeder installation according to Owner's Manual.
Use proper tap on stabilizer (see Section 3-10)
Have Factory Authorized Service Agent check control board PC1, motor drive board PC2 and/or
SCRs in main rectifier.
Reset circuit breaker CB1 (see Section 3-7).
Reset circuit breaker CB3 (see Section 3-7).
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
Clean
and
tighten weld
terminals.
Remedy
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