Hypertherm Powermax125 Service Manua - Manual (Page 121)

Powermax125 Service Manual 808070 121
8 – Troubleshooting and System Tests
IGBT device test using the Hypertherm tester
Using the Hypertherm IGBT tester, press and hold the switch in the desired position to perform each test described in
the following table.
Troubleshoot the Hypertherm IGBT tester
1. Inspect the leads and the IGBT tester for damage.
2. Verify that the battery voltage is greater than 8 V.
3. Test the IGBT Tester itself as shown in the following table. If the results do not match the table, replace the lead
connections.
Switch
Position
LED
This may mean Corrective action
Fail Pass Battery
Left X - - IGBT is short-circuited Replace IGBT
Left - X - IGBT passed the short-circuit test None
Left - - X Battery below 8 V Replace battery
Left - - - Dead battery Replace battery
Right X - - IGBT is open Replace IGBT
Right - X - IGBT passed the open test None
Right - - X Battery below 8 V Replace battery
Right - - - Dead battery Replace battery
Connect leads
Short test
Open test
None Pass Fail
Red to Black Fail Pass