
461
TORCH SWITCH
OPEN CLOSE
GAS SOLENOID VALVE
PREFLOW
FLOW SWITCH CLOSE
FAULT OVERLOAD LIGHT
HF CIRCUIT
PILOT ARC
INVERTER
CUTTING ARC (CURRENT)
5.3 SEQUENCE OF OPERATION
A. TRIGGER LOCK “UNLOCK” position (Applies to PT-21AMX and PT-32EH Torches)
PUSH RELEASE
ENERGIZE
NOTES:
1. When the torch switch is pushed during postow period, the postow and preow times are canceled, and the HF is ener-
gized immediately.
2. When the red fault light comes on, cutting operation should be stopped. The postow time starts from the moment the
torch switch is released.
20 SEC
Postow
OPEN
2 SEC.
SECTION 5 TROUBLESHOOTING
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