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OM-228 042 Page 38
SECTION 9 − TROUBLESHOOTING
9-1. Troubleshooting
A. Welding
Trouble Remedy
No weld output or generator power out-
put at ac receptacles.
Be sure all equipment is disconnected from receptacles when starting unit.
. AC receptacles provide auxiliary
power only while engine is running.
Place switch in Wall position or start engine and place switch in Generator position.
Over temperature light is flashing. Allow unit to cool with fan running until thermostat TP1 resets and light
turns off.
Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, and integrated rectifier
SR2.
No weld output; generator power out-
put okay at ac receptacles.
Place switch in Generator position to obtain weld output.
Check weld connections.
Check Spool Gun/Mig Gun switch position.
Have Factory Authorized Service Agent check stator, integrated rectifier SR2, stabilizer Z1, and main
rectifier SR1.
Low weld output. Check Weld Output control setting.
Check engine speed, and adjust if necessary (see Section 8-10).
Service engine air cleaner.
Check weld cable size and length.
Have Factory Authorized Service Agent check stator, integrated rectifier SR2, stabilizer Z1, and main
rectifier SR1.
High weld output. Check Wire Speed and Voltage control settings.
Check engine speed, and adjust if necessary (see Section 8-10).
Erratic weld output. Check Wire Speed and Voltage control settings. Check wire feed for erratic condition.
Tighten and clean connections to electrode and workpiece.
Remove excessive coils from work lead and gun power cable.
Clean and tighten connections both inside and outside welding generator.
Check engine speed, and adjust if necessary (see Section 8-10).
Check throttle/governor linkage for smooth, non-binding operation.
B. Generator Power
Trouble Remedy
No output at generator power ac re-
ceptacles; no weld output.
Be sure all equipment is disconnected from receptacles when starting unit.
. AC receptacles provide auxiliary
power only while engine is running.
Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, and integrated rectifier
SR2.
No output at generator power ac re-
ceptacles; weld output okay.
Reset and check supplementary protector (see Section 7-1).
Check receptacle wiring and connections.
Have Factory Authorized Service Agent check stator windings and connections at terminal block 1T.
High output at generator power ac
receptacles.
Check engine speed, and adjust if necessary (see Section 8-10).