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OM-235 281 Page 30
5-9. Welding Troubleshooting Table
Welding Trouble Remedy
No weld output; wire does not feed.
Secure power cord plug in receptacle (see Section 3-14).
Place Power switch in the ON position.
Place MIG/Spool Gun switch in the proper position.
Check and replace Power switch if necessary.
Check supplementary protectors CB1 and/or CB2, and reset if necessary (see Section 5-2).
Replace building line fuse or reset circuit breaker if open (see Section 3-14).
Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Sections 3-4 and/or
Parts List).
Thermostat open (overheating). Allow fan to run; the thermostat will close when the unit has cooled (see
Section 3-2).
No weld output; wire feeds. Connect work clamp to get good metal to metal contact.
Replace contact tip (see Section 5-6).
Low weld output. Connect unit to proper input voltage or check for low line voltage (see Section 3-14).
Low, high, or erratic wire speed. Readjust front panel settings (see Section 4-1).
Change to correct size drive roll (see Section 5-3).
Readjust drive roll pressure (see Section 3-15).
Replace inlet guide, contact tip, and/or liner if necessary (see Sections 5-3, 5-6 and/or 5-8).
5-10. Wire Drive/Gun Troubleshooting Table
Wire Drive/Gun Trouble Remedy
Electrode wire feeding stops during
welding or wire feeding intermittently.
Straighten gun cable and/or replace damaged parts (see Section 5-8).
Adjust drive roll pressure (see Section 3-15).
Readjust hub tension (see Section 3-8).
Check supplementary protectors CB1 and/or CB2, and reset if necessary (see Section 5-2).
Replace contact tip if blocked (see Section 5-6).
Clean or replace wire inlet guide or liner if dirty or plugged (see Sections 5-3 and/or 5-8).
Replace drive roll if worn or slipping (see Section 5-3).
Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Section 3-4 and/or
see Parts List).
Check and clear any restrictions at drive assembly and liner (see Section 5-8).
Have nearest Factory Authorized Service Agent check drive motor.