OM-198 683 Page 20
SECTION 4 – MAINTENANCE &TROUBLESHOOTING

4-1. Routine Maintenance

YDisconnect power
before maintaining.
.Maintain more often
during severe conditions.

3 Months

Replace unreadable labels Repair or replace
cracked weld cable
Clean and tighten weld terminals

6 Months

Blow out or vacuum inside.
OR
Remove drive roll and
carrier. Apply light coat
of oil or grease to drive
motor shaft.

4-2. Circuit Breaker CB1

1 Circuit Breaker CB1
If CB1 opens, wire feeding stops.
2 Circuit Breaker CB2
Overcurrent at pin D of receptacle
RC7 will cause CB2 to open.
3 Welding Gun
Check gun liner for blockage or
kinks.
4 Wire Drive Assembly
Check for jammed wire, binding
drive gear or misaligned drive rolls.
Allow cooling period and reset
breaker. Close door.
3
802 475-A / Ref. 800 797-C
4
12

4-3. Unit Overload

Thermostat TP1 in rectifier Z1 protects the unit from damage due to overheating. If TP1 opens, wait several minutes

before trying to weld.