Miller Big Blue Turbo, Owner'S Manual

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OM-4420 Page 38
Trouble Remedy
No remote fine amperage or voltage
control.
Place Panel/Remote switch in Remote position.
Check and secure connections to Remote 14 receptacle RC14 (see Section 5-10).
Repair or replace remote control device.
Have Factory Authorized Service Agent check PC1 current sensing leads (36 and 37), and connections.
Constant speed wire feeder does not
work.
Reset supplementary protector(s) CB5 and CB13 (see Section 8-8).
Check and secure connections to Remote 14 receptacle RC14 (see Section 5-10).
Repair or replace wire feeder.
Low CV weld output. Set Ampere Range switch to highest range.
Increase Voltage/Amperage Adjust Control setting.
Min or max CV weld output only. Check position of Voltage/Amperage Adjust control and Panel/Remote switch.
Repair or replace remote control device.
Have Factory Authorized Service Agent check field current regulator board PC1.
B. Generator Power
Trouble Remedy
No generator power output at ac recep-
tacles; weld output okay.
Reset receptacle supplementary protectors.
Reset GFCI receptacle.
No generator power or weld output. Disconnect equipment from generator power receptacles during start-up.
Check fuses F1 and F2, and replace if open (see Section 8-8). Have Factory Authorized Service Agent
check integrated rectifier SR1, capacitor C9, diode/capacitor board D1/C1, and the rotor.
Reset supplementary protectors CB12. Have Factory Authorized Service Agent check field current regu-
lator board PC1 (see Section 8-8).
Have Factory Authorized Service Agent check brushes and slip rings, and field excitation circuit.
High output at generator power
receptacles.
Check engine weld/power speed, and adjust if necessary (see Section 8-6).
Have Factory Authorized Service Agent adjust field current resistor R3.
Low output at generator power
receptacles.
Check engine weld/power speed, and adjust if necessary (see Section 8-6).
Check fuse F1, and replace if open (see Section 8-8). Have Factory Authorized Service Agent check inte-
grated rectifier SR1, resistor R3, and capacitor C9.
C. Engine
Trouble Remedy
Engine will not crank. Check battery, and replace if necessary.
Check battery connections and tighten if necessary.
Circuit breaker CB10 may be open. CB10 automatically resets when fault is corrected (see Section 8-8).
Have Factory Authorized Service Agent check engine wiring harness and components.
Check engine wiring harness plug connections.
Turn optional battery disconnect switch to On position (see Section 5-6).
Have Factory Authorized Service Agent check Engine Control switch S1, control relay CR1, and diode/
capacitor board D8/C8.