Hypertherm Powermax 85 Service Manual

TroubleshooTing and sysTem TesTs
powermax 65/85 Service Manual 5-51
Test 8 – Torch cap switch
Symptom: Fault code 0-50 and the cap-sensor switch icon appear on the operator screen.
1. Confirm that the retaining cap is in place.
2. Remove the torch from the power supply and check the resistance between Pin 5 and Pin 7 in the torch lead plug.
a. If the resistance is very high, check for opens in the torch leads and cap sensor switch.
b. If there is no problem with the leads or switch, test the circuit boards.
- Turn off the machine and disconnect power.
- Put a jumper wire between J20 pins 1 and 2.
- Reconnect power and turn on the machine.
- If the cap-sensor switch icon is not displayed, verify the DSP board by replacing it with a known working
board. If the DSP is not the problem replace the power board.

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