Hobart Welding Products 150, 120 manual Troubleshooting Table, Trouble Remedy

5-6. Troubleshooting Table

	Trouble		Remedy
No weld output; wire does not feed; fan		Secure power cord plug in receptacle (see Section 3-5).
does not run.
		Replace building line fuse or reset circuit breaker if open.
		Place Power switch in On position (see Section 4-1).
		Check circuit breaker CB (CSA model), and reset if necessary (see Section 5-2).
No weld output; wire does not feed; fan		Thermostat S3 open (overheating). Allow fan to run; thermostat closes when unit has cooled (see Section
motor continues to run.		2-2).
		Secure gun trigger leads (see Section 3-1).
No weld output; wire feeds.		Connect work clamp to get good metal to metal contact.
		Replace contact tip (see Section 5-4).
		Check for proper polarity connections (see Section 3-2).
Low weld output.		Connect unit to proper input voltage or check for low line voltage.
		Place voltage switch in desired position (see Section 4-1).
Electrode wire feeding stops during		Straighten gun cable and/or replace damaged parts.
welding.
		Adjust drive roll pressure (see Section 3-9).
		Change to proper drive roll groove (see Section 5-3).
		Readjust hub tension (see Section 3-8).
		Replace contact tip if blocked (see Section 5-4).
		Clean or replace wire inlet guide or liner if dirty or plugged (see Section 5-3 or Section 5-5).
		Replace drive roll or pressure bearing if worn or slipping (see Section 5-3).
		Secure gun trigger leads or repair leads (see Section 3-1).
		Check circuit breaker CB or CB2 (depending on Model), and reset if necessary (see Section 5-2).
		Check and clear any restrictions at drive assembly and liner (see Section 3-9 or Section 5-5).
		Have nearest Factory Authorized Service Agent check drive motor.

OM-210 088 Page 24