Section 9 − Troubleshooting - Miller Electric Blue Star 3500 Owner's Manual

SECTION 9 − TROUBLESHOOTING
9-1. Troubleshooting
A. Welding
Trouble
No weld output.
Low weld output.
High weld output.
Erratic weld output.
B. Generator Power
Trouble
No output at generator power ac
receptacles.
High output at generator power ac
receptacles.
Low output at generator power ac
receptacles.
OM-498 Page 28
Check Amperage control setting.
Check weld connections.
Be sure all equipment is disconnected from receptacles when starting unit.
Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, reactor L2, output
rectifier CR3, stabilizer L3, integrated rectifiers CR1 and CR2, and amperage control R1.
Check Amperage control and throttle lever settings.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5).
Service air cleaner according to engine manual.
Check weld cable size and length.
Have Factory Authorized Service Agent check brushes, slip rings, capacitor C1, reactor L2, and recti-
fier CR2.
Check Amperage control setting.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5).
Check Amperage control setting.
Tighten and clean connections to electrode and workpiece.
Use dry, properly-stored electrodes for Stick welding.
Remove excessive coils from weld cables.
Clean and tighten connections both inside and outside welding generator.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5).
Check throttle/governor linkage for smooth, non-binding operation.
Reset circuit breakers (see Section 7-1).
Check receptacle wiring and connections.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5). Output stops if engine speed is
too low.
Have Factory Authorized Service Agent check stator windings.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5).
Check Amperage control setting.
Check engine speed, and adjust if necessary (see Section 8-4 or 8-5). Output stops if engine speed is
too low.
Move throttle lever to Run (far right) position (see Section 6-1 or 6-2).
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