Changing Liner; Troubleshooting - Hobart Welders DP 3545-20 Consignes De Sécurité

5-3. Changing Liner

1
Tools Needed:

5-4. Troubleshooting

Trouble
Gun tube assembly loose.
No weld output; gun/feeder does not
work.
Erratic weld output.
Pressing gun/feeder trigger does not
energize welding power source; welding
wire is not energized; shielding gas does
not flow.
Wire feeds, shielding gas flows, but
welding wire is not energized.
Wire feeds erratically.
OM-241 877 Page 16
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2
Tighten nut at base of gun tube assembly.
Place Power switch on welding power source in the On position (see welding power source Owner's
Manual).
Check Spool Gun/MIG Gun switch for correct position.
Tighten and clean all connections.
Check for proper weld output polarity connections (see Section 3-2).
Secure plug from gun/feeder trigger cord into 4-socket receptacle on welding power source
(see Section 3-2).
Place Spool Gun/MIG Gun switch in Spool Gun position (see Section 3-2).
Secure spool gun cable connector to wire drive assembly inside welding power source (see Section 3-2).
See Troubleshooting section in welding power source Owner's Manual.
Check and correct drive roll pressure (see Section 3-3).
Clean or replace drive roll; clean or replace liner (see Sections 5-2 and 5-3).
!
Turn off and disconnect
input power.
1 Nozzle
2 Contact Tip
3 Liner
Remove and replace liner.
Reinstall parts as shown.
Remedy
Ref. 804 687-A