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powermax1650 Service Manual

3-1

Section 3

MAINTENANCE

In this section:

Controls and Indicators.............................................................................................................................................3-2

Theory of Operation..................................................................................................................................................3-3

General ............................................................................................................................................................3-3

Functional Description......................................................................................................................................3-3

Sequence of Operation.............................................................................................................................................3-4

Troubleshooting ........................................................................................................................................................3-5

Test Equipment ................................................................................................................................................3-5

Troubleshooting Procedures and Sequence ....................................................................................................3-5

Visual Inspection – External.............................................................................................................................3-5

Visual Inspection – Internal ..............................................................................................................................3-6

Resistance Checks ...................................................................................................................................................3-7

Troubleshooting Guide..............................................................................................................................................3-9

Voltage Checks.......................................................................................................................................................3-14

Component Replacement .......................................................................................................................................3-20

Power Cord Replacement ..............................................................................................................................3-20

Torch Installataion ..........................................................................................................................................3-21

Filter Element Replacement...........................................................................................................................3-23

Work Cable Replacement ..............................................................................................................................3-24

Capacitor Replacement..................................................................................................................................3-25

Heat Sink Component Replacement..............................................................................................................3-26