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OM-186 165 Page 17
4-4. Troubleshooting
Trouble Remedy
Wire does not feed; open-circuit voltage
available.
Check circuit breaker CB1 and fuse F1. Reset CB1 or replace F1 if necessary (see Section 4-2).
Check sensing lead connection.
Check gun trigger plug connection.
Check gun trigger. See gun Owner’s Manual.
Have Factory Authorized Service Agent check drive motor and control board PC1.
Wire feeds erratically. Readjust hub tension (see Section 2-8).
Readjust drive roll pressure (see Section 2-8).
Use correct size drive roll (see Parts Listing)
Clean or replace dirty or worn drive roll (see Section 2-2).
Remove weld spatter around nozzle opening.
Replace contact tip or liner. See gun Owner’s Manual.
Have Factory Authorized Service Agent check drive motor and control board PC1.
Wire feeds as soon as power is applied. Check gun trigger. See gun Owner’s Manual.
Wire stubbing on low end using a con-
stant current power source.
Make sure CC/CV switch is in CC position (see Section 3-1).
Increase output setting of power source.
Inaccurate optional IPM meter. Calibrate meter (see Section 4-3).
Optional meters not working. Have Factory Authorized Service Agent check meter board PC4 and control board PC1.
Gas does not flow; wire feeds. Check optional gas valve and flowmeter.
Have Factory Authorized Service Agent check control board PC1.
Gas does not stop flowing; wire feeds. Adjust optional flowmeter.
Have Factory Authorized Service Agent check control board PC1.