Hypertherm HT4001 Plasma Arc Cutting System - Manual (Page 93)

OPERATION
11-96
5-2
HT4001
Instruction Manual
Controls and Indicators
HT4001 Power Supply Front Panel (Fig. 5-1)
POWER
• AC Indicator
Indicator illuminates when power up is complete.
• DC Indicator
Illuminates when main contactor closes, indicating DC power is being supplied to the torch.
STATUS
• RHF DOOR LED
When illuminated, indicates that one of the door interlock switches in the RHF console is disengaged. (RHF
console door is open)
• TRANSFORMER LED
When illuminated, indicates that either the power supply main transformer or one of the choppers is
operating in an unacceptable temperature range.
• COOLING WATER LED
When illuminated, indicates that the coolant flow to the electrode is inadequate.
• PLASMA GAS LED
When illuminated, indicates that the plasma gas pressure is inadequate.
HT4001 Power Supply Rear Panel Control (Fig. 5-2)
POWER
• UP Position (I)
In this position, AC is sent to the control transformer, turning the power supply on.
• DOWN Position (O)
In this position, AC is cut off to the control transformer, turning the power supply off.