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3-1

MAINTENANCE

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

Hypertherm powermax900 Service Manual

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