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3-1. Controls
Setting Gas/Air Pressure
5
40
30
50
1
O
I
POWER
Set Controls
1
Power Switch
2
Power Light
Power light comes On when Power switch is
placed in On position.
When unit is turned On, the power light blinks
for a short time (3 seconds for 230 VAC, 1 se-
cond for 460 VAC) to indicate a delay during
which the circuits are being initialized.
If the voltage selector switch (see Section
2-7) is set for 230 VAC and 460 VAC is ap-
plied to the unit, the power light continues to
blink and the unit is not operational.
The power light also blinks to indicate the
need for a manual power reset. This occurs
OM-225 Page 14
SECTION 3 – OPERATION
1
2
7
6
Requires 70–150 PSI
(482–1034 kPa) Supply
Turn On Gas/Air Supply
whenever the torch parts are disassembled
while the unit is turned On.
3
Ready Light
Use light to tell if unit is ready for operation.
Ready light comes on when Power switch is
placed in On position, indicating that all safe-
ty shutdown systems are okay.
If Ready light does not come on, check
Trouble Lights.
4
Trouble Lights (See Section 4-2)
5
Output Control
Use control to set cutting output.
3
4
5
Set To
70 PSI (482 kPa)
Adjust Pressure
Gas/air automatically flows at the set
pressure.
Setting Gas/Air Pressure
Place controls in positions shown. Only gas/
air circuit is activated when Power switch is
turned On with Output Control in Gas/Air Set
Position.
6
Pressure Gauge
7
Pressure Adjustment Knob
Lift knob and turn to adjust pressure. Push
knob down to lock in setting.
Place output control in desired cutting
output.
30
40
50
Select Desired
Amperage To Be-
gin Cutting
ST-801 394
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