Section 9 − Troubleshooting; Welding Troubleshooting - Miller Trailblazer 301 D Owner's Manual

SECTION 9 − TROUBLESHOOTING

9-1. Welding Troubleshooting

Trouble
No weld output.
Low weld output.
High weld output.
Weld output cannot be adjusted.
Erratic weld output.
No remote fine amperage control.
No 24 volt ac output at Remote
receptacle RC4.
No 115 volt ac output at Remote
receptacle RC4.
Check control settings.
Check weld connections.
Disconnect equipment from generator power receptacles during start-up.
Place V/A Adjust switch in Panel position, or move switch to Remote position and connect remote
control to Remote receptacle RC4 (see Sections 5-9 and 6-1).
Check and secure connections to Remote receptacle RC4 (see Sections 5-9).
Check fuse F1, and replace if necessary (see Section 8-7).
Have Factory Authorized Service Agent check brushes, slip rings, integrated rectifier SR2, and circuit
boards PC1 and PC2.
Check control settings.
Place V/A Adjust switch in Panel position, or move switch to Remote position and connect remote
control to Remote receptacle RC4 (see Sections 5-9 and 6-1).
Check and clean air cleaner as necessary (see Section 8-3).
Check engine speed, and adjust if necessary (see Section 8-6).
Have Factory Authorized Service Agent check brushes, slip rings, integrated rectifier SR2, and circuit
boards PC1 and PC2.
See engine manual.
Check control settings.
Check and adjust engine speed (see Section 8-6).
Check for obstructed movement of solenoid linkage (see Section 8-6).
Have Factory Authorized Service Agent check circuit boards PC1 and PC2.
Check position of V/A Adjust switch (see Section 6-1).
Have Factory Authorized Service Agent check field current control board PC2.
Check control settings.
Clean and tighten connections both inside and outside unit.
Check and secure lead connections to V/A control.
Be sure connection to work piece is clean and tight.
Remove excessive coils from weld cables.
Use dry, properly stored electrodes.
Check and adjust engine speed (see Section 8-6).
Have Factory Authorized Service Agent check brushes, slip rings, and circuit boards PC1 and PC2.
Place V/A Adjust switch in correct position (see Section 6-1).
Check and tighten connections to Remote receptacle RC4 (see Section 5-9).
Reset circuit breaker CB5 (see Section 8-7).
Check fuse F3, and replace if open (see Section 8-7).
Reset circuit breaker CB1 (see Section 7-1).
Remedy
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