Hypertherm Powermax 85 Service Manual

TroubleshooTing and sysTem TesTs
powermax 65/85 Service Manual 5-55
Test 12 – AUX switch
Symptom: The display goes blank after “Hypertherm” appears. (CSA units only).
1. Turn the machine off and disconnect the power.
2. Disconnect the auxiliary switch cable from J1 on the power board.
3. Measure the resistance on the cable plug between Pin 4 and Pin 5.
4. If the power switch is closed (ON) there should be very low resistance.
5. If the power switch is open (OFF) there should be very high resistance.
6. If the resistance measurement doesn’t agree, check the cable, plug, and switch for opens or shorts.

Hypertherm Powermax 85 Specifications

General

Gas Supply	Clean, dry, oil-free air or nitrogen
Cooling Method	Fan-cooled
Input Voltage	200-600V, 3-phase
Current Output	25-85 A
Duty Cycle	60% @ 85 A
Recommended Gas Inlet Flow Rate/Pressure	6.7 scfm @ 85 psi
Cutting Capacity (Recommended)	1" (25 mm)
Gas Type	Air/Nitrogen