Miller Electric OM-225A - Manual (Page 16)

OM-225 Page 14
SECTION 3 – OPERATION
3-1. Controls
ST-801 394
1 2 3 5
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
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.
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.
Setting Gas/Air Pressure
7
I
O
POWER
30 40
50
6
30
50
40
1
5
4
Set Controls Turn On Gas/Air Supply Adjust Pressure
Select Desired
Amperage To Be-
gin Cutting
Set To
70 PSI (482 kPa)
Requires 70–150 PSI
(482–1034 kPa) Supply