Weldclass CutForce CF-40p, Operating Instructions Manual

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10 © Weldclass 2019 | E.&O.E.
4.3 Setting Air Pressure
Correct air pressure is critical for plasma cutting. Incorrect air pressure will cause poor cut quality, lack of
cutting power, damage to the plasma torch and consumables and potentially damage the power source.
Optimum air pressure is between 0.45 and 0.5 MPa (65-75psi). Air pressure should be set with the air
flowing through the torch, as the pressure with the air flowing will normally be less than static pressure,
due to flow losses through the torch system.
1. Set Cutting Mode to ‘Test Air’ to begin air flow through the torch.
2. Lift the Air Regulator Adjustment Knob (7) up to unlock it
3. Rotate Air Regulator Adjustment Knob (7) adjust air pressure whilst reading the air pressure on
the Air Regulator Gauge (8). Turning clockwise will increase pressure, turning clockwise will
decrease pressure.
4. Once correct Air Pressure is set push the Air Regulator Adjustment Knob (7) down to lock it in
position.
5. Change Cutting Mode selection to desired cutting Mode to stop air flow.
Figure 6 Figure 7 Figure 8
4.4 Air Filter / Water Separator
As with correct air pressure, clean, dry air is also critical for plasma cutting machine performance and
reliability. Moist or dirty air will significantly reduce cut quality and consumable life.
The CutForce CF-40P is supplied with a basic air filtration/moisture separator to assist with providing
suitable air supply. The moisture separator is self-draining, the Air Filter Moisture Drain Tube (12) exits out
the bottom of the clear Air Filter Bowl (11). It is normal to see moisture coming from this tube periodically.
If excessive amounts of water or oil are being produced in the bowl and drain line, the compressed air
supply should be checked for issues.
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