Manual 0-4691 4-1 OPERATION
4
SECTION 4: OPERATION
4.01 Product Features
A. Power Supply Front Panel Controls and Indicators
(
A) Output Current Control
Sets the desired output current. At output settings
over 40 Amps, the power supply automatically re-
duces output current to 40 Amps if the torch tip
touches the workpiece.
ON / OFF Switch
Controls input power to the power supply.
is ON, is OFF.
RUN / RAPID AUTO RESTART / SET Switch
RUN (up) position is for general torch operation.
RAPID AUTO RESTART (middle) position is for an uninterrupted restart, when cutting
expanded metal or in trimming operations.
SET (down) position is for setting gas pressure and purging lines.
AC Indicator
Steady light indicates power supply is ready for
operation. Blinking light indicates unit is in pro-
tective interlock mode. Shut unit off, shut off or
disconnect input power, correct the fault, and re-
start the unit. Refer to Section 5 for details.
TEMP Indicator
Indicator is normally OFF. Indicator is ON
when internal temperature exceeds normal
limits. Shut unit OFF; let the unit cool before
continuing operation.
GAS Indicator
Indicator is ON when minimum input gas
pressure for power supply operation is
present. Minimum pressure for power sup-
ply operation is not sufficient for torch op-
eration.
DC Indicator
Indicator is ON when DC output circuit is
active.
A
Art # A-04253
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