Miller Electric OM-234 016D - Manual (Page 41)

OM-234 016 Page 32
5-3. Changing Liner
Ref. 804 985-A
Tools Needed:
!
Turn Off power at welding
power source first.
1 Nozzle
2 Contact Tip
3 Liner
Remove and replace liner.
Reinstall parts as shown.
1
2
3
5-4. Troubleshooting
Trouble Remedy
No weld output; gun/feeder does not
work. 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.
Erratic weld output. Tighten and clean all connections.
Check for proper weld output polarity connections (see Section 4-1A, 3-4 or 3-5).
Pressing gun/feeder trigger does not
energize welding power source; welding
wire is not energized; shielding gas does
not flow. Secure plug from gun/feeder trigger cord into 4-socket receptacle on welding power source (see Section
3-3B, 3-4 or 3-5).
Place Spool Gun/MIG Gun switch in Spool Gun position (see Section 3-3B or 3-5).
Wire feeds, shielding gas flows, but
welding wire is not energized. Secure spool gun cable connector to wire drive assembly inside welding power source (see Section 3-3B,
3-4 or 3-5).
See Troubleshooting section in welding power source Owner’s Manual.
Wire feeds erratically. Check and correct drive roll pressure (see Section 3-6).
Clean or replace drive roll; clean or replace liner (see Sections 5-2 and 5-3).