Tweco 50 CutMaster - Manual (Page 24)

OPERATION 4-2 Manual 0-2805
B. Control Panel Features
A-03641
1
20
25
30
35
40
4
5
6
7
2
3
A
Operating Controls
1. ON / OFF Power Switch
ON position supplies AC power to activate all sys-
tem control circuits. OFF position deactivates con-
trol circuits.
2. RUN / SET Switch
RUN position is used for general torch operation.
Torch switch must be held. SET position used for
setting gas pressure and purging lines.
3. Current Control (A)
Adjustment to set the desired output current between
20-40 amps.
4. AC Power Indicator
Green indicator will blink ON-OFF for approximately
eight seconds and then stay ON after the ON /
OFF power switch is set to ON. Indicates operating
power is present in the unit.
5. TEMP Indicator
Normally OFF. Yellow indicator will come ON when
the internal temperature sensors detect temperatures
above normal limits. The unit should be allowed to
cool before continuing operation.
6. GAS Indicator
Green indicator will come ON when the input gas
pressure is set to
35 psi (2.4 bar) or higher. Indicator
will be OFF when the pressure falls below 35 psi (2.4
bar).
7. DC Indicator
Green indicator will come ON while the torch is acti-
vated. Indicates DC output circuit is active.
C. Rear Panel Features
1. Gas Input Port
Connection for gas input.
WARNING
This unit is not to be used with oxygen (O
2
).
A-03042
1
2
3
Rear Panel
2. Primary Input Power Cable / Strain Relief
Primary input power cable with strain relief, capable
of handling the input voltage for which this unit was
designed.
3. Gas Pressure Filter / Regulator Assembly
Pressure regulator to adjust the input gas pressure to
the Power Supply. The pressure regulator has its own
built-in filter.
Factory installed. For improved filter-
ing, other filtering packages are available as options.