Miller Engine Driven Welde Big Blue 600

Stop engine. When a supplementary protector, circuit breaker or fuse opens, it usually indicates a more serious problem exists. Contact Factory Authorized Service Agent.

See Section 9-4 for air compressor overload protection.

See Section 6-11 for air dryer overload protection.

Supplementary Protector CB9: CB9 protects the 24 volt AC output to remote receptacles. If CB9 opens, weld output and 24 volt output to remote receptacle stops.

Supplementary Protector CB15: Compressor overload protection, see Section 9-4.

Fuse F1 and F2: F1 and F2 protect the stator exciter winding from overload. If F1 opens, weld and generator power is low or stops entirely. If F2 opens, weld output is low or stops entirely. 4 kVA/kW generator power is still available.

Supplementary Protector CB14: Air dryer overload protection, see Section 6-11.

Supplementary Protector CB3 and CB4: CB3 protects the engine weld control circuit. If CB3 opens, weld output stops, meters will be blank; however, generator power is still available. CB4 protects the field flashing circuit. If CB4 opens, the generator may not excite at start-up and weld and generator power output may not be available.

Supplementary Protector CB2: CB2 protects the engine control circuit. If CB2 opens, the engine does not crank.

Sign off on the welder maintenance

Use the Voltmeter/Ammeter help displays to diagnose and correct fault conditions.

When a help code is displayed normally weld output has stopped but generator power output may be okay.

To reset help displays, stop unit and then restart. See item 4 below to reset Help 25 display.

Indicates a failure of meter display module PC2, or the wiring between PC2 and main control module PC1, or PC1. If this display is shown, have Factory Authorized Service Agent check PC1, PC2, and the wiring between them.

Thermistor TH1 in the IGBT module on the heat sink has failed. If this display is shown, have Factory Authorized Service Agent check TH1, and the wiring between TH1 and PC1.

Indicates the IBGT module heat sink has overheated. If this display is shown, check generator cooling system and/or reduce duty cycle. Keep engine access door closed when running to maintain proper cooling air flow past the heat sinks. Allow unit to cool before restarting. If problem continues, have Factory Authorized Service Agent check unit.

NOTICE − Use extended life coolant only.

Enter the amount of coolant used

Was the coolant successfully replaced?

Sign off on the coolant replacement

NOTICE − Do not run engine without air cleaner or with dirty element. Engine damage caused by using a damaged element is not covered by the warranty.