Troubleshooting - Weldclass CutForce CF-40p Operating Instructions Manual

Problem
Torch will not come on/arc
Sparks are shooting upward
instead of down through
the material
Beginning of cut
completely pierced
Dross build-up on cuts
Arc stops in middle of cut
Insufficient penetration
26

11 TROUBLESHOOTING

Cause
Power switch OFF
Air supply is not of sufficient
volume or pressure
Earth clamp not attached
Plasma torch is not piecing the
material
Travel speed too fast
Torch may be too far away from
the material
Material may be too thick for
capacity of plasma
not Possible earth
problem
Material building up heat
Incorrect speed / technique
Worn torch parts
Insufficient air supply
Cutting speed is too slow
Tip to material distance is too high Tip should be approximately
Worn torch parts
Possible earth
problem
Cutting speed too fast
Torch tilted too much
Material may be too thick for
capacity of plasma
Worn torch parts
© Weldclass 2019 | E.&O.E.
Solution
Turn power switch to the ON
position
Check air supply (60-80psi, at
least 3.5cfm required)
Attach earth clamp to work piece
or to steel table with work piece
securely clamped to table
Increase amperage and/or reduce
speed
Reduce travel speed
The tip should be approximately
2mm above the material
Several passes may be necessary
or find some other method to cut
the material
connection Check earth clamp is securely
connected to the bare material.
Check earth lead is securely
plugged into machine
Ensure earth lead is it good
condition.
Allow material to cool then
continue cutting
Refer to 7.7 - Reducing Dross for
Clean Cuts
Replace with new torch parts
Check air supply (60-80psi, at
least 3.5cfm required).
May have to wait for compressor
to build up pressure again.
Increase cut speed until problem
solved
2mm off the material
Replace with new torch parts
connection Check earth clamp is securely
connected to the bare material.
Check earth lead is securely
plugged into machine
Ensure earth lead is it good
condition.
Slow down travel speed
Adjust tilt
Several passes may be necessary
or find some other method to cut
the material
Replace with new torch parts
.