OM-745 Page 13
4-4.
Troubleshooting
Trouble
Remedy
No weld output; pilot light Off.
Check line fuses, and replace if necessary (see Section 2-9).
Check fuse F1 and/or Power/pilot light/circuit breaker switch S1, and replace if necessary (see Section
4-2).
Turn On Power/pilot light/circuit breaker switch S1.
No weld output, pilot light on.
Check for proper coolant supply pressure (see Section 2-6).
Place Weld Switch S3 in the Weld position (see Section 3-1).
Have Factory Authorized Service Agent check contactor W.
Low weld output; pilot light On.
Dress or replace tips (see Section 4-3).
Remove and clean ends of tongs and tong holders (see Section 2-5).
Adjust tong pressure (see Section 2-10).
Longer than normal Weld Time required.
Dress or replace tong tips (see Section 4-3).
Clean workpieces.
Adjust tong pressure (see Section 2-10).
Check input line voltage.
Burn through at point of weld.
Shorten weld time (see Section 3-1).
Adjust tong pressure (see Section 2-10).
Dress or replace tong tips (see Section 4-3).
Realign tips (see Section 2-5).
Tongs close too slowly.
Check air pressure at source and at regulator (see Section 2-7).
Have Factory Authorized Service Agent check and replace air valve, if necessary.
