Controls and Settings
Fig 1
1. Air pressure gauge
This shows the air pressure as set by regulator at rear of machine. This should be set to 70PSI when
the test gas button is activated.
2. Amperage control knob
This adjusts the amperage (cutting power) from 20 to 100 amps
3. L.E.D amperage display
When cutting this shows the actual cutting amperage
4. Test Gas / Cutting selector switch & Post flow air timer
When in the down position this is test gas mode, when setting air pressure switch to test gas so you
obtain actual air flow cutting pressure. When in the up position this is cutting mode, you can now
start cutting, the knob controls post flow air from 3 - 15 seconds and cools the torch head after
cutting. We recommend a minimum of 10 seconds (12 o'clock position) to pro-long torch tip life and if
cutting at 100amps to turn to maximum - 15 seconds.
5. Auto / Standard switch
When in the down position this is in standard cutting mode, this is the normal operating position for
plasma cutting with a hand held and machine type torch, When in the up position this is in auto mode
(4T) this is for special applications when using automated machinery.
6. Indication of too low air pressure
The led will be shown when the air pressure is less than 26psi and the machine will not work. Adjust
pressure to correct 70psi, led will go out and you can resume cutting.
7. Indication of too low air pressure
9