5-13. Troubleshooting

A. Wire Feeder Trouble

Trouble

Remedy

 

 

Pressing gun trigger does not energize

Secure plug from gun control cable into Gun Control receptacle on feeder (see Section 3-6).

feeder. Welding wire is not energized.

 

Shielding gas flows.

 

 

 

 

Secure 115 VAC input plug connection (see Section 3-12).

 

 

 

Check fuse F1 (see Section 5-11).

 

 

 

Check water connection to feeder or gun (see Sections 3-6 and 3-8).

 

 

 

Check for kinks in water hose.

 

 

 

Be sure coolant supply is turned On (see Section 4-14).

 

 

 

Have nearest Factory Authorized Service Station/Service Distributor check optional water flow switch,

 

if applicable (see Section 5-12).

 

 

Wire feeds, shielding gas flows, but

Secure 115 VAC/contactor control plug connection (see Section 3-12).

welding wire is not energized.

 

 

 

 

See Troubleshooting section in welding power source manual.

 

 

 

Check plug PLG50, PLG51 and PLG52 connections (see Section 3-13).

 

 

Wire feeds erratically.

Check position of Motor Torque switch (see Section 4-11).

 

 

 

Adjust drive roll pressure if necessary (see Section 3-15).

 

 

 

Replace or clean drive rolls as necessary (see Sections 5-2 and 5-3).

 

 

 

Align drive roll with opening in gun conduit fitting and groove in bearing (see Section 5-3).

 

 

Arc varies and welding wire is kinked

Place Motor Torque switch in low torque position if welding with .030 (0.8 mm) aluminum welding wire (see

when feeding out gun.

Section 4-11).

 

 

Pressing gun trigger will not feed wire,

Reset circuit breaker CB1 (see Section 5-11).

wire is not energized, shielding gas

 

flows, and Jog switch activates motor.

 

 

 

Feeder feeds wire but remains in run-in

Route weld cable through current sensing relay (see Section 3-8).

mode after arc initiation.

 

 

 

 

If constant current (CC) welding, be sure PLG5 is in EXT. position on PC1, and voltage sensing lead is

 

connected (see Section 3-11).

 

 

 

If constant voltage (CV) welding, be sure PLG5 is in INT. position on PC1, and that voltage sensing lead

 

is not connected (see Section 3-11).

 

 

Feeder feeds wire, but switches from

Be sure PLG5 is in INT. position on PC1. Disconnect voltage sensing clamp from workpiece (see Section

weld mode to run-in mode while CV

3-11).

welding with voltage sensing lead

 

installed.

 

 

 

Shielding gas leak through gas valve in

Reduce shielding gas pressure at regulator flowmeter. Do not exceed 50 psi (345 kPa).

gun.

 

 

 

OM-1581 Page 36

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Hobart OM-1581 manual Troubleshooting, Wire Feeder Trouble