Manual 0-2859 4-1 OPERATION
SECTION 4:
OPERATION
4.01 Introduction
This section describes the power supply operating con-
trols and procedures, identifies the front and rear com-
ponents, and describes the operating procedures.
4.02 Product Features
A. General Features
1. Control Panel
All operator controls, except gas pressure adjustment,
are located on this panel.
A-02992
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2
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2. Torch Leads Input
Hole in the front panel to feed the torch leads through
to the internal bulkhead connections.
3. Work Cable and Clamp
20 ft (6.1 m) work cable with clamp.
4. Roll Handle/Torch Leads Wrap
The torch leads and work cable wrap around the
handle.
B. Control Panel Features
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A
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60
20
80
Operating Controls and Indicators
1. ON/OFF Power Switch
ON (up) position supplies AC power to activate all
control circuits. OFF (down) position deactivates con-
trol circuits.
2. RUN/SET Switch
RUN (up) position is for general torch operation.
Torch switch must be held. SET (down) position used
for setting gas pressure and purging lines.
3. Current Control (A)
Adjustment to set the output current between 20-80
amps (for standoff cutting) or 20-40 amps (for drag
cutting). At settings over 40 amps, circuitry in the
power supply automatically reduces output current
to 40 amps if the torch tip contacts the workpiece.
4. AC Power Indicator
Indicates operating power is present in the unit.
5. TEMP Indicator
Normally OFF. Yellow indicator is ON when internal
sensors detect temperatures above normal limits. The
unit should be allowed to cool before continuing op-
eration.
6. GAS Indicator
Green indicator is ON when the input gas pressure is
set to 35 psi (2.4 bar) or higher. Indicator is OFF when
the pressure falls below 35 psi (2.4 bar).
7. DC Indicator
Green indicator will come ON while the torch switch
is pressed. Indicates DC output circuit is active.
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