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 4-7and/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

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 4-7and/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.

 

 

OM-1330 Page 31

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Miller Electric M-10 Gun, Millermatic DVI manual Troubleshooting, Welding Trouble Remedy