Hobart OM-1581 manual Gun Trouble

B. Gun Trouble

Trouble	Remedy
No weld output; gun/feeder does not	Secure 115 VAC input plug in 115 volts ac receptacle (see Section 3-12).
work.
	Place Power switch on welding power source in the On position.
Erratic weld output.	Tighten and clean all connections.
Pressing gun/feeder trigger does not en-	Secure plug from gun control cable into 10-socket receptacle on wire feeder (see Section 3-6).
ergize weld control; welding wire is not
energized; shielding gas does not flow.
Wire does not feed; burnback in contact	Reinstall current pick-up tab if applicable (see Section 5-2).
tip.
Wire feeds, shielding gas flows, but	Clean or replace drive rolls. See Troubleshooting section in welding power source Owner’s Manual (see
welding wire is not energized.	Sections 5-2 and 5-3).
Wire feeds erratically.	Check and correct drive roll pressure (see Section 3-15).
	Clean drive roll or replace drive roll (see Sections 5-2 and 5-3).
Gun overheating (water-cooled	Be sure coolant flowrate is at least 1 qt/min (0.95 L/min).
models).
	Corrosion buildup in gun decreasing coolant flowrate. Backflush coolant system, clean coolant system
	filter, and clean fittings (see Section 3-17).

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