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OM-927 Page 29
5-8. Welding Troubleshooting Table
Welding Trouble Remedy
No weld output; wire does not feed. Secure power cord plug in receptacle (see Section 3-13).
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 3-13).
Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Sections 3-5 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 5-5).
Low weld output. Connect unit to proper input voltage or check for low line voltage (see Section 3-13).
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 3-14).
Replace inlet guide, contact tip, and/or liner if necessary (see Sections 5-3, 5-5 and/or 5-6).
5-9. Wire Drive/Gun Troubleshooting Table
Wire Drive/Gun Trouble Remedy
Electrode wire feeding stops during
welding.
Straighten gun cable and/or replace damaged parts (see Section 5-6).
Adjust drive roll pressure (see Section 3-14).
Readjust hub tension (see Section 3-10).
Check supplementary protectors CB1 and/or CB2, and reset if necessary (see Section 5-2).
Replace contact tip if blocked (see Section 5-5).
Clean or replace wire inlet guide or liner if dirty or plugged (see Sections 5-3 and/or 5-6).
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 3-5 and/or
see Parts List).
Check and clear any restrictions at drive assembly and liner (see Section 5-6).
Have nearest Factory Authorized Service Agent check drive motor.