8. Porosity in weld.
1. Insulator worn.
2. Gas diffuser damaged
3. Extreme heat or duty cycle.
4. Solenoid faulty.
5. No gas.
6. Flow improperly set.
7. Gas ports plugged.
8. Ruptured gas hose.
9. Control circuit loss.
10. Worn, cut or missing o-rings.
11. Loose fittings.
12. AccuLock S power pin cap not
torqued to the correct spec.
1. Replace nozzle / insulator.
2. Replace gas diffuser or o-rings.
3. Replace with heavy duty consumables.
4. Replace solenoid.
5.
a.
Install full tanks.
b.
Check supply.
c.
Check for hose leaks.
6. Adjust flow.
7.
a.
Clean or replace gas diffuser.
b.
Clean nozzle.
8. Repair or replace cable or line.
9. See ‘
Electrode does not feed
’.
10. Replace o-rings.
11. Tighten gun and cable connections to specified torque. See
Section 8 — Replacement on page 14.
12. Tighten power pin cap to specified torque. See section 8-2
Changing AccuLock™ S Consumables on page 15.
9. Gun running hot.
1. Exceeding duty cycle.
2. Loose or poor power connection.
1.
a.
Replace with properly rated Bernard MIG Gun.
b.
Decrease parameters to within gun rating.
2.
a.
Clean, tighten or replace cable grounding connection.
b.
Tighten gun and cable connections to specified torque.
See Section 8 — Replacement on page 14.
10. Liner is discolored full
length.
1. Short circuit to electrode.
2. Broken copper stranding in power
cable.
1. Isolate electrode reel from feeder and drive block. Consult
feeder manufacturer's manual.
2. Replace MIG gun.
11. Sporadic feeding of
aluminum electrode.
1. Tip galling.
2. Synthetic liner melting.
3. Wire deformed by feeder rolls.
1. Inspect and replace the contact tip.*
2.
a.
Replace liner.
b.
Replace with composite liner.
c.
Replace the neck and jump liner.
3. Adjust drive rolls as per feeder manufacturer's manual.
*In some cases with aluminum and mild steels, it may be necessary to use a contact tip with either a larger or smaller bore size.
37
OM-BTB-2.7
Summary of Contents for OM-BTB-2.7
Page 43: ...NOTES OM BTB 2 7 38...
