Hypertherm Powermax 85 Service Manual

TroubleshooTing and sysTem TesTs
5-42 powermax 65/85 Service Manual
Test 3 – Output diodes
• Check the four diodes in the bridge with an ohmmeter in diode test mode.
• For each diode, the value should be “open” (very high resistance) with the meter leads in one direction and 0.1
V to 1.0 V with the meter leads reversed.
- A diode is shorted if the value is less than 0.1 V. Replace the bridge.
- A diode is open if the value is greater than 1.0 V in both directions. Replace the bridge.
Note: In each case, common (black) should be on 3.
3 2 1
3 2 1
3 2 1
3 2 1

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