ESAB Powercut 650 Manuel D'instructions page 118

SECtIoN 5
C. Air does not shut off
Is air check switch OFF?
Does arc start when nozzle contacts work without depressing torch switch?
Check for short in torch switch
Does air flow even when POWERCUT 650 power switch is OFF?
Replace
solenoid valve
Yes
Yes
Yes
figure 5-3. Sequence of operations
No
No
No
Repair power
source
118
MAINtENANCE
Turn switch OFF