Hypertherm Powermax125 Service Manua - Manual (Page 162)

162 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
Test 9 – Electronic regulator
Symptom: Air flows continuously through the torch.
1. Turn OFF the machine and disconnect the power.
2. Disconnect the electronic regulator control cable (J6) 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.
Figure 30
1 2 3 4 5
1 Electronic regulator (J6)
2 Pressure switch/auxiliary contactor (J5)
3 Pressure sensor (J3)
4 Inverter temperature sensor (J2)
5 Fan (J1)