Troubleshooting - Miller MILLERMATIC DVI Owner's Manual

6-10. Troubleshooting

Welding Trouble
No weld output; wire does not feed.
No weld output; wire feeds.
Low weld output.
Low, high, or erratic wire speed.
Wire Drive/Gun Trouble
Electrode wire feeding stops during
welding. welding
Secure power cord plug in receptacle (see Section 4-13).
Check power switch/circuit breaker, and reset if necessary. If circuit breaker is not tripped, replace power
switch.
Check circuit breaker CB1, and reset if necessary (see Section 6-2).
Replace building line fuse or reset circuit breaker if open (see Section 4-13).
Secure gun plug in receptacle or repair leads, or replace trigger switch (see Section 4-6 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).
Connect work clamp to get good metal to metal contact.
Replace contact tip (see Section 6-4).
Connect unit to proper input voltage or check for low line voltage (see Section 4-13).
Readjust front panel settings (see Section 5-1).
Change to correct size drive roll (see Section 6-5).
Readjust drive roll pressure (see Section 4-14).
Replace inlet guide, contact tip, and/or liner if necessary (see Sections 6-4, and 6-8).
Straighten gun cable and/or replace damaged parts (see Section 6-8).
Adjust drive roll pressure (see Section 4-14).
Readjust hub tension (see Section 4-9).
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 4-6 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.
Remedy
Remedy
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