FABRICATOR 281 WELDING MACHINE
TROUBLESHOOTING
-
Manual No. 0-4880B
6.05 Wire Feeder Problems
FAULT
CAUSE
REMEDY
A Primary Input supply
voltage is ON. Indicator
light is not lit and welding
arc can not be established.
1
2
Broken connection in
primary circuit.
Two amp wire feeder circuit
breaker in the power supply
compartment has tripped.
1
2
Have an Accredited Thermal
Arc Service Agent check
primary circuit.
Reset the wire feeder circuit
breaker in the power supply
compartment.
B Primary Input indicator
light is not lit but welding
arc can be established.
1 Burnt out Indicator light.
1
Have an Accredited Thermal
Arc Service Agent replace
Indicator light.
C Primary Input supply
voltage is ON but when
the torch trigger switch
is depressed nothing
happens.
1 Torch trigger switch
leads are disconnected.
Power switch on front of
wirefeeder is OFF
1
Reconnect Switch to ON
position
D Primary Input supply
voltage is ON, no wire
feed but gas flows from
the MIG Torch when the
torch trigger switch is
depressed.
1
2
Electrode wire stuck in
conduit liner or contact tip
(burn-back jam).
Faulty control PCB
1
2
Check for clogged / kinked MIG
Torch conduit liner or worn
contract tip.
Replace faulty components.
Have an Accredited Thermal
Arc Service Agent investigate
the fault.
E Wire feeds when the
torch trigger switch is
depressed but arc can not
be established.
1 Poor or no work lead
contact.
1
Clean work clamp area and
ensure good electrical contact.
F Jerky wire feed
1
2
3
4
Worn or dirty contact tip
Worn feed roll.
Excessive back tension
from wire reel hub.
Worn, kinked or dirty
conduit liner
1
2
3
4
Replace
Replace
Reduce brake tension on spool
hub
Clean or replace conduit liner
G No gas flow
1
2
3
4
Gas hose is cut.
Gas passage contains
impurities.
Gas regulator turned off.
Empty cylinder.
1
2
3
4
Replace or repair.
Disconnect gas hose from the
rear of Power Source or wire-
feeder then raise gas pressure
and blow out impurities.
Turn on.
Replace cylinder.
8 Gas flow continues after
the torch trigger switch
has been released.
1 Gas valve has jammed
open due to impurities in
the gas or the gas line.
1
Have an Accredited Thermal
Arc Service Agent repair or
replace gas valve.
Table 6-3: Wire Feeder Problems
Summary of Contents for 281 FABRICATOR
Page 54: ...fabricator 281 OPERATION 4 18 Manual No 0 4880B NOTES ...
Page 80: ...Fabricator 281 CIRCUIT OPERATION 8 Manual No 0 4880B ...
Page 98: ...fabricator 281 APPENDIX A Manual No 0 4880B APPENDIX 4 SPOT TIMER CIRCUIT DIAGRAM Art A 07521 ...
Page 104: ...fabricator 281 APPENDIX A 12 Manual No 0 4880B ...
Page 105: ......
