Hypertherm Powermax900 Service Manual - Manual (Page 28)

3-1
M
AINTENANCE
Service Manual
Section 3 MAINTENANCE
In this section:
Introduction .......................................................................................... 3-2
Routine Maintenance ........................................................................... 3-2
Bowl Draining/Filter Element Cleaning ............................................ 3-2
Removal, Cleaning and Replacement of Cooling Air Filter .............. 3-3
Controls and Indicators ........................................................................ 3-4
Theory of Operation ............................................................................. 3-5
Sequence of Operation ........................................................................ 3-7
Troubleshooting.................................................................................... 3-8
Test Equipment ................................................................................ 3-8
Troubleshooting Procedures............................................................ 3-8
Visual Inspection - External ............................................................. 3-8
Visual Inspection - Internal .............................................................. 3-9
Resistance Checks ........................................................................ 3-10
Powermax900 Troubleshooting Guide ............................................... 3-13
Voltage Checks .............................................................................. 3-18
Power Board ...................................................................................... 3-22
Control Board ..................................................................................... 3-24
Control Board LEDs ....................................................................... 3-24
PAC125T Torch Parts Removal and Replacement ............................ 3-26
Torch Main Body Removal and Replacement ............................... 3-26
Torch Switch Removal and Replacement ...................................... 3-27
PAC125M Torch Parts Removal and Replacement............................ 3-28
Removal ........................................................................................ 3-28
Replacement ................................................................................. 3-28
Quick Disconnect O-Ring Removal and Replacement ...................... 3-30