Download CUT40 - WeldKing

SECTION 4 TROUBLE SHOOTING
No.
Problem
Cause
Solution
1
Power Indication lamp is not illuminate after
Loose contact at input lead
Check contact situation
Lamp malfunction, poor
Check contact situation.
contact
Replace lamp
Main switch malfunction
Check switch, replace if
switch on the main switch
necessary
2
Electric leak at the case
Power cord leak
Insulate power cord
Transformer contact with
Insulate transformer
case
3
Power Indication lamp is on, but arc does
not extinguish after release the torch switch
Not grounding properly
Check and redo the grounding
The switch shortcut
Replace switch
The switch contact
Re-insulate terminal
terminal shortcut
4
Cooling fan stops to
Power indication
Cooling fan circuit
rotate after machine
lamp on
malfunction
has worked a
Check fan circuit
Cool fan failure
period
Power indication
Check fan, replace if necessary
See No. 1
lamp off
5
6
Machine does not response after push the
Trigger shortcut or control
start trigger
cable broken
Replace/re-connect
Control transformer failure
Replace
There are high frequency but arc fail to
The torch cable open
Re-connect
ignite or does not ignite properly
circuit
Control circuit board failure
Check and repair the circiut
board
The HF spark gap too
CUT40 OWNER’S MANUAL
Manual no: WM070303
Adjust gap to 2 mm
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