Hobart Welding Products DP-3035 manual Changing Liner, Troubleshooting

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5-3. Changing Liner

Y Turn Off power at welding power source first.

1 Nozzle

2 Contact Tip

3 Liner

Remove and replace liner. Reinstall parts as shown.

3

2

1

Tools Needed:

Ref. 804 687-A

5-4. Troubleshooting

	Trouble	Remedy


	Gun tube assembly loose.	Tighten nut at base of gun tube assembly.

	No weld output; gun/feeder does not	Place Power switch on welding power source in the On position (see welding power source Owner’s
	work.	Manual). Check Spool Gun/MIG Gun switch for correct position.

	Erratic weld output.	Tighten and clean all connections.

		Check for proper weld output polarity connections (see Section 3-3).

	Pressing gun/feeder trigger does not	Secure plug from gun/feeder trigger cord into 4-socket receptacle on welding power source (see Section
	energize welding power source; welding	3-3).
	wire is not energized; shielding gas does
	wire is not energized; shielding gas does	Place Spool Gun/MIG Gun switch in Spool Gun position (see Section 3-3).
	not flow.

	Wire feeds, shielding gas flows, but	Secure spool gun cable connector to wire drive assembly inside welding power source (see Section 3-3).
	welding wire is not energized.
	welding wire is not energized.	See Troubleshooting section in welding power source Owner’s Manual.


	Wire feeds erratically.	Check and correct drive roll pressure (see Section 3-4).

		Clean or replace drive roll; clean or replace liner (see Sections 5-2and 5-3).

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Contents Description File Wire FeederOM-230 261A ProcessesFrom Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéSpecifications − InstallationRemoving MIG Gun From Handler Spool Gun Connecting Spool Gun To HandlerMIG Gun Installing Wire Spool And Threading Welding Wire Controls − Operation Spool Gun MIG Gun Routine Maintenance − Maintenance & TroubleshootingChanging Drive Rolls Turn Off power at welding power source firstChanging Lower Drive Roll Changing Liner TroubleshootingBefore You Start Welding Gmaw MIG Aluminum Welding HintsWelding Techniques Contact Tube Position And Tip-To-Work Distance Common Problems/TroubleshootingCircuit Diagram − Electrical DiagramsOM-230 261 Complete Assembly − Parts ListOptional Page Support ServiceAssistance Hobart Welding Products Contact your Distributor for