Miller Electric M-10 Gun - Manual (Page 35)

OM-1330 Page 31
6-10. Troubleshooting
Welding Trouble Remedy
No weld output; wire does not feed. Secure power cord plug in receptacle (see Section 4-14).
Check power switch/supplementary protector, and reset if necessary. If supplementary protector is not
tripped, replace power switch.
Check supplementary protector CB1, and reset if necessary (see Section 6-2).
Replace building line fuse or reset circuit breaker if open (see Section 4-14).
Secure gun plug in receptacle or repair leads, or replace trigger switch (see Section 4-7 and/or 6-9).
Thermostat TP1 or TP2 open (overheating). Allow fan to run; the thermostat will close when the unit has
cooled (see Section 6-3).
No weld output; wire feeds. Connect work clamp to get good metal to metal contact.
Replace contact tip (see Section 6-4).
Low weld output. Connect unit to proper input voltage or check for low line voltage (see Section 4-14).
Low, high, or erratic wire speed. Readjust front panel settings (see Section 5-1).
Change to correct size drive roll (see Section 6-5).
Readjust drive roll pressure (see Section 4-15).
Replace inlet guide, contact tip, and/or liner if necessary (see Sections 6-4, and 6-8).
Wire Drive/Gun Trouble Remedy
Electrode wire feeding stops during
welding
Straighten gun cable and/or replace damaged parts (see Section 6-8).
welding.
Adjust drive roll pressure (see Section 4-15).
Readjust hub tension (see Section 4-10).
Replace contact tip if blocked (see Section 6-4).
Clean or replace wire inlet guide or liner if dirty or plugged (see Section 6-8).
Replace drive roll if worn or slipping (see Section 6-5).
Secure gun plug in receptacle or repair leads, or replace trigger switch (see Section 4-7 and/or 6-9).
Check and clear any restrictions at drive assembly and liner (see Section 6-8).
Have nearest Factory Authorized Service Agent check drive motor.