Sequence Of Operation - ESAB PCM-500i Instruction Manual

SECTION 5

5.3 SEQUENCE OF OPERATION

A. LOCK-IN "OFF" position
TORCH SWITCH
GAS SOLENOID VALVE
FLOW SWITCH
FAULT OVERLOAD LIGHT
HF CIRCUIT
INVERTER
CUTTING ARC (CURRENT)
NOTES:
1. When the torch switch is pushed during postflow period, the postflow and preflow times are canceled, and the HF
is energized immediately.
2. When the amber fault pilot light comes on, cutting operation should be stopped. The postflow time starts from the
moment the torch switch is released.
PUSH
OPEN
2 SEC.
PREFLOW
CLOSE
ENERGIZE
TROUBLESHOOTING
RELEASE
CLOSE
10 SEC
Postflow
OPEN
25