7-7. Troubleshooting Table
|
|
|
|
|
| |
|
|
|
|
|
| |
| Trouble |
|
| Remedy | ||
|
| |||||
No weld output; wire does not feed; fan | Secure power cord plug in receptacle (see Section | |||||
does not run. |
|
|
| |||
Replace building line fuse or reset circuit breaker if open. | ||||||
|
|
| ||||
|
|
|
| |||
|
|
| Place Power switch in On position (see Section | |||
|
|
|
| |||
|
|
| Reset welding power source supplementary protector (see Section | |||
|
| |||||
No weld output; wire does not feed; fan | Thermostat TP1 open (overheating). Allow fan to run with gun trigger switch off; thermostat closes when | |||||
motor continues to run. | unit has cooled (see Section | |||||
|
|
|
| |||
|
|
| Check Voltage range switch position. Rotate knob until it “clicks” into detent at desired range setting. | |||
|
|
|
| |||
|
|
| Secure gun trigger leads (see Section | |||
|
| |||||
No weld output; wire feeds. | Connect work clamp to get good metal to metal contact. | |||||
|
|
|
| |||
|
|
| Replace contact tip (see Section | |||
|
|
|
| |||
|
|
| Check for proper polarity connections (see Section | |||
|
|
|
| |||
|
|
| Check thumbscrew securing gun end to feed head adapter and tighten if necessary. | |||
|
| |||||
Wire does not feed; wire is not ener- | Check contact tip. Check for kinks in gun cable and liner. | |||||
gized; wire feeds unevenly. |
|
|
| |||
Check gun trigger plug connection at welding power source/wire feeder. | ||||||
|
|
| ||||
|
|
|
| |||
|
|
| Check, and if necessary, replace gun trigger switch (see Section | |||
|
|
|
| |||
|
|
| Check contact tip. Check for kinks in gun cable. Blow out liner and gun casing (see Section | |||
|
| |||||
Low weld output. | Connect unit to proper input voltage or check for low line voltage. | |||||
|
|
|
| |||
|
|
| Place voltage switch in desired position (see Section | |||
|
| |||||
Electrode wire feeding stops during | Straighten gun cable and/or replace damaged parts. | |||||
welding. |
|
|
| |||
Adjust drive roll pressure (see Section | ||||||
|
|
| ||||
|
|
|
| |||
|
|
| Change to proper drive roll groove (see Section | |||
|
|
|
| |||
|
|
| Readjust hub tension (see Section | |||
|
|
|
| |||
|
|
| Be sure that wire is positioned in proper drive roll groove and wire is laying in the groove. | |||
|
|
|
| |||
|
|
| Replace contact tip if blocked (see Section | |||
|
|
|
| |||
|
|
| Clean or replace wire inlet guide or liner if dirty or plugged (see Section | |||
|
|
|
| |||
|
|
| Replace drive roll or pressure bearing if worn or slipping (see Section | |||
|
|
|
| |||
|
|
| Secure gun trigger leads or repair leads (see Section | |||
|
|
|
| |||
|
|
| Check and clear any restrictions at drive assembly and liner (see Section | |||
|
|
|
| |||
|
|
| Release gun trigger and allow gun and motor protection circuitry to reset (see Section | |||
|
|
|
| |||
|
|
| Gun is not secured to feed head. Check thumbscrew securing gun end to feed head adapter and tighten | |||
|
|
| if necessary. | |||
|
|
|
| |||
|
|
| Have nearest Factory Authorized Service Agent check drive motor. | |||
|
| |||||
Weld porosity. | Remove weld spatter buildup in nozzle. | |||||
|
|
|
| |||
|
|
| Check | |||
|
|
|
| |||
|
|
| Make sure inner head tube is tight in cable connector. | |||
|
|
|
| |||
|
|
| Check gun connector to be sure it is fully inserted into drive assembly. | |||
|
|
|
| |||
|
|
| Check shielding gas flow/supply. | |||
|
|
|
|
|
|