Miller Electric Metro 250D - Manual (Page 35)

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OM-402
Trouble Remedy
Erratic weld output. Clean and tighten weld output connections inside and outside unit.
Use dry, properly-stored electrodes.
Remove excessive coils from weld cables.
Be sure connection to work piece is clean and tight.
Have Factory Authorized Service Agent check brushes, slip rings, main rectifier, integrated rectifier
SR3, capacitor C5, and circuit board PC6.
No 24 volt ac output at Remote 14
receptacle RC1.
Reset circuit breaker CB5 (see Section 7.7).
7.10 Auxiliary Power Troubleshooting
Trouble Remedy
No output at auxiliary power
receptacles.
Disconnect equipment from receptacles during start-up.
Reset circuit breakers (see Section 6).
Reset ground fault circuit interrupter GFCI1 (see Section 6).
Check fuses F2 and F3, and replace if necessary (see Section 7.7).
Check receptacles for continuity and proper connections. Replace receptacle(s) if necessary.
Have Factory Authorized Service Agent check brushes, slip rings, relay CR5, and relay CR6.
Low output at receptacles. Check fuses F2 and F3, and replace if necessary (see Section 7.7).
Check engine speed, and adjust if necessary (see Section 7.6).
Tune-up engine according to engine manual.
Have Factory Authorized Service Agent check brushes, slip rings, and integrated rectifier SR3.
High output at receptacles. Check engine speed, and adjust if necessary (see Section 7.6).
Erratic output at receptacles. Check receptacle wiring and connections.
Have Factory Authorized Service Agent check brushes, slip rings, and integrated rectifier SR3.
7.11 Engine Troubleshooting
Trouble Remedy
Engine does not crank. Reset circuit breaker CB8 (see Section 7.7).
Check battery, and replace if necessary.
Check plug PLG8 connection.
Check Engine Control switch S1 and replace if necessary.
Check engine charging and starting systems according to engine service manual.