Section 9 − Troubleshooting - Miller Blue Star 185 Manuel Du Propriétaire

SECTION 9 − TROUBLESHOOTING
9-1. Troubleshooting
A. Welding
Trouble
No weld output or generator power out-
put at ac receptacles.
No weld output; generator power out-
put okay at ac receptacles.
Low weld output.
High weld output.
Erratic weld output.
B. Generator Power
Trouble
No output at generator power ac re-
ceptacles; no weld output.
No output at generator power ac re-
ceptacles; weld output okay.
High output at generator power ac
receptacles.
Low output at generator power ac
receptacles.
OM-267 212 Page 32
Be sure all equipment is disconnected from receptacles when starting unit.
Have Factory Authorized Service Agent flash the rotor. Then check brushes, slip rings, rotor, stator,
integrated rectifier SR2, and Weld Output control R1.
Check Weld Output control setting.
Check weld connections.
Have Factory Authorized Service Agent check Weld Output control R1, stator, integrated rectifier
SR2, stabilizer DC-Z, main rectifier SR1, and reactor AC-Z.
Check Weld Output control setting.
Check engine speed, and adjust if necessary (see Section 8-6).
Service engine air cleaner (see Section 8-3). Service engine fuel filter (see Section 8-4).
Check weld cable size and length.
Have Factory Authorized Service Agent check Weld Output control R1, stator, integrated rectifier
SR2, stabilizer DC-Z, main rectifier SR1, and reactor AC-Z.
Check Weld Output control setting.
Check engine speed, and adjust if necessary (see Section 8-6).
Check Weld Output 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 welder/generator.
Check engine speed, and adjust if necessary (see Section 8-6).
Check throttle/governor linkage for smooth, non-binding operation.
Service engine air cleaner (see Section 8-3). Service engine fuel filter (see Section 8-4).
Be sure all equipment is disconnected from receptacles when starting unit.
Have Factory Authorized Service Agent flash the rotor. Then check brushes, slip rings, rotor, stator,
integrated rectifier SR2, and Weld Output control R1.
Reset and check supplementary protector (see Section 7-1). Reset and check GFCI receptacle (see
Section 7-2.
Check receptacle wiring and connections.
Have Factory Authorized Service Agent check stator windings and connections at terminal block 1T.
Check engine speed, and adjust if necessary (see Section 8-6).
Check Weld Output control setting.
Check engine speed, and adjust if necessary (see Section 8-6). Open circuit voltage is reduced as engine
speed drops.
.
Complete Parts List available at www.MillerWelds.com
Remedy
Remedy