OPERATION
powermax
45
Operator Manual 4-3
I
O
Rear controls
ON (I)/OFF (O) power switch
Activates the power supply and its control circuits.
Gas pressure LED and pressure bar (green or yellow)
When the LED indicator in the pressure bar illuminates green and is centered in the
vertical bar, the gas pressure is set correctly for the mode of cutting selected with
the mode switch. If the pressure is too high for the selected mode, the indicator in
the pressure bar will be above the mid-point of the bar. If it is too low, the indicator
will be below the mid-point. At the highest and lowest points on the bar, the
indicator will illuminate yellow.
If the indicator is at the lowest part of the bar and flashes, then the gas pressure is
less than the minimum required pressure.
45
30
40
Amperage adjustment knob
Set this knob to the gas-test position (fully counter-clockwise) before adjusting the
gas pressure with the pressure regulator knob on the top of the power supply. Once
the gas pressure is set, turn the knob clockwise to set the output amperage. The
torch will not fire when the knob is in the gas-test position.
I
O
CSA/230 V CE 400 V CE
Mode switch and LEDs
The mode switch can be set in one of three positions:
• Continuous pilot arc to cut expanded metal or grate (top).
• Non-continuous pilot arc to cut metal plate (middle).
• Gouging (bottom).
After you change the mode switch, verify that the gas pressure is still set correctly.
Different modes of cutting require different pressure settings.
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