Troubleshooting, Welding Trouble Remedy

4-8. Troubleshooting

Welding Trouble	Remedy


No weld output; wire does not feed.	Secure power cord plug in receptacle (see Section 2-12).

	Reset circuit breaker CB1 (see Section 4-2).

	Replace fuse F1 and/or F2 (see Section 4-3).

	Replace building line fuse or reset circuit breaker if open (see Section 2-12).

	Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Section 2-7
	and/or 4-7).

	Thermostat TP1 open (overheating). Allow fan to run; the thermostat will close when the unit has
	cooled (see Section 2-3).

No weld output; wire feeds.	Connect work clamp to get good metal to metal contact.

	Replace contact tip (see Section 4-5).

Low weld output.	Connect unit to proper input voltage or check for low line voltage (see Section 2-12).

Wire Drive/Gun Trouble	Remedy


Electrode wire feeding stops during	Straighten gun cable and/or replace damaged parts (see Section 4-6).
welding.

	Adjust drive roll pressure (see Section 2-13).

	Readjust hub tension (see Section 2-8).

	Replace contact tip if blocked (see Section 4-5).

	Clean or replace wire inlet guide or liner if dirty or plugged (see Section 4-6).

	Replace drive rolls if worn or slipping (see Section 4-4).

	Secure gun trigger plug in receptacle or repair leads, or replace trigger switch (see Section 2-7
	and/or 4-7).

	Check and replace F1 and/or F2 (see Section 4-3).

	Check and clear any restrictions at drive assembly and liner (see Section 4-6).

	Have nearest Factory Authorized Service Agent check drive motor.

	Check relay CR1, and replace if necessary.

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