Hypertherm Powermax65 Service Manual Rev.1 - Manual (Page 178)

TroubleshooTing and sysTem TesTs
5-52
powermax
65/85 Service Manual
Test 9 – Electronic regulator
Symptom: Air flows continuously through the torch.
1. Turn off the machine and disconnect power.
2. Disconnect the electronic regulator control cable (J4 for CSA, J6 for CE) from the power board.
• If air continues to flow, replace the electronic regulator.
• If the air stops flowing, verify the DSP board by replacing it with a known good one. If the DSP board is not the
problem, replace the power board.
Pressure sensor
J5 (CSA), J7 (CE)
Fan
J3 (CSA), J5 (CE)
Electronic regulator
J4 (CSA), J6 (CE)
Inverter temperature sensor
J2 (CSA), J4 (CE)