Hypertherm XPR170, Instruction Manual

Page: 334 / 438

Diagnostics and Troubleshooting
8
334 809480 Instruction Manual XPR300
Process-gas inlet pressure in the torch connect console diagnostic codes (702, 705, 769, 770) for
OptiMix-equipped cutting systems
The N
2
and Ar gas regulators inside the OptiMix gas connect console (078633) are set at
Hypertherm. They are set when the process gas is flowing with 7.9 bar – 8.6 bar (115 psi –
125 psi) pressure on the gas inlet and 6.9 bar (100 psi) on the gas outlet. A downstream 1.6 mm
(0.063 inch) orifice is part of both regulator configurations.
It can be necessary to adjust the regulators, if the following conditions occur:

N
2
shield inlet (P4) pressure is above 7.5 bar (110 psi) or below 6.2 bar (90 psi)

Ar shield inlet (P4) pressure is above 7.5 bar (110 psi) or below 6.2 bar (90 psi)
Follow these steps to adjust the N
2
regulator
1. Install 1 of the following sets of consumables:

300 A O
2
/Air

300 A N
2
/N
2

300 A Mix/N
2

170 A O
2
/Air

170 A N
2
/N
2

170 A Mix/N
2
2. Use the XPR web interface to choose 1 of the following processes:

2100 for 300 A N
2
/N
2
aluminum or stainless steel

2057 for 170 A N
2
/N
2
aluminum or stainless steel
3. Remove the cover from OptiMix gas connect console.
WARNING
ELECTRIC SHOCK CAN KILL
Disconnect electrical power before doing troubleshooting or diagnostic work.
All work requiring removal of the plasma power supply outer cover or panels
must be done by a qualified technician.
See the Safety and Compliance Manual (80669C) for more safety
information.