Hypertherm Powermax 65 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 65 Specifications

General

Open Circuit Voltage (OCV)	300 VDC
Gas Supply	Clean, dry, oil-free air or nitrogen
Maximum Cut Capacity (Mild Steel)	1" (25 mm)
Input Voltage	200-600 V, 1/3-PH, 50/60 Hz
Output Current	20 – 65 A
Duty Cycle	50% @ 65 A
Recommended Gas Inlet Flow Rate/Pressure	6.7 scfm @ 85 psi
Torch Lead Length	25 ft (7.6 m)
Maximum Cut Capacity (Aluminum)	5/8" (16 mm)
Severance Cut Capacity (Mild Steel)	1-1/4" (32 mm)
Maximum Severance Thickness	1-1/4 in (32 mm)
Gas Type	Air/Nitrogen
Torch Options	Hand Torch, Mechanized Torch