TM-260 273 Page 21Handler 190
Trouble Remedy
Check Control board PC1 and connections, and replace PC1 if necessary (see Section 6-3).
No weld output; wire feeds. Connect work clamp to get good metal-to-metal contact.
Replace gun contact tip (see Section 7-5).
Check thumbscrew securing gun end to feedhead adapter and tighten if necessary.
Weld output present; wire does not
feed.
Switch MIG Gun/Spool Gun selector switch to operate the desired gun. MIG Gun position is for the
integrated wire feed motor operation. Spool Gun position is for the spool gun wire feed motor operation.
Low weld output.
Connect unit to proper input voltage or check for low line voltage.
Place Voltage switch S2 in desired position (see Section 4-1).
If using an extension cord, be sure that it is the proper size for the input voltage and amperage.
Low or erratic wire speed. Readjust weld parameter settings.
Change to correct size drive roll.
Readjust drive roll pressure.
Clean or replace wire inlet guide or liner if dirty or plugged (see Section 7-4 and/or 7-5).
Readjust wire reel hub tension.
Check voltage and connections of wire drive motor. Replace motor if necessary.
Improper or no shielding gas flow. Clean or replace gas hose.
Check shielding gas valve GS1 for proper coil voltage and connections. Check continuity of coil. Replace
GS1 if necessary.
Clear blockage in gun.
Shielding gas flows continuously.
Check and remove any debris from gas valve.
Replace contactor CR3.
Weld porosity.
Remove weld spatter buildup in nozzle.
Check O-rings on gun connector and replace if damaged.
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.
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