Preventive Maintenance Program
XPR Instruction Manual 809480 29
Incoming air supply quality
To maintain system performance, it is important that the incoming air supply is clean. If the air supply
has dirt, oil, or water in it, components can become clogged or defective. An air supply of bad
quality can cause the following problems:
Decrease air flow
Increase system gas errors
Decrease cut quality and performance
Oil in the torch head can cause a fire when the oil reacts with the oxygen cutting process. Also,
unwanted material in pressure sensors can cause false pressure readings.
The best solution, if possible, is to improve the quality of the air supply. Contact your OEM or
regional Hypertherm Technical Service team if you need advice on how to improve the quality of
your air supply.
If you cannot change your air supply quality, you can replace the following components more
frequently.
Metal dust inside the power supply cabinet
Plasma cutting makes metal dust. If metal dust collects inside the plasma power supply, it can
decrease the life of the fans.
The main power supply, chopper, or heat exchanger fans can operate more slowly, or failure of the
fans can occur. This can cause temperature-related errors.
The best solution to extend the life of the fans is to clean inside the power supply. For instructions,
see Clean inside the plasma power supply on page 17.
If metal dust has collected inside your power supply, you can replace the following components
more frequently.
Description Part number
Air filter element 011110
Quick-disconnect torch 420221
Gas solenoid valve, pressure transducer –
Description Part number
Fan assembly: 292 cfm, 48 VDC,120 mm (4.7 inch) diameter 229821
Fan assembly: 890 cfm, 48 VDC, 254 mm (10 inch) diameter 229822