To Next Page

To Previous Page

powermax

Service Manual 5-1

Section 5

TROUBLESHOOTING AND SYSTEM TESTS

In this section:

Theory of operation ....................................................................................................................................................................................5-2

General ..............................................................................................................................................................................................5-2

200–240V CSA and 230V CE 1-phase power supply functional description .............................................................5-2

400V CE 3-phase power supply functional description .......................................................................................................5-2

480V CSA 3-phase power supply functional description ...................................................................................................5-3

Sequence of operation ...................................................................................................................................................................5-4

Troubleshooting preparation ....................................................................................................................................................................5-5

Test equipment .................................................................................................................................................................................5-5

Troubleshooting procedures and sequence..............................................................................................................................5-5

External inspection ..........................................................................................................................................................................5-6

Internal inspection ...........................................................................................................................................................................5-6

Initial resistance check .............................................................................................................................................................................. 5-7

200–240V CSA and 230V CE power supply overview ................................................................................................................5-8

400V CE power supply overview .........................................................................................................................................................5-9

480V CSA power supply overview ................................................................................................................................................... 5-10

Troubleshooting guide ...........................................................................................................................................................................5-11

Control Board LEDs...............................................................................................................................................................................5-16

Use the control board Error and Reset LEDs to troubleshoot .......................................................................................... 5-17

System tests.............................................................................................................................................................................................5-18

Test 1 – voltage input ..................................................................................................................................................................5-18

Test 2 – power board voltage checks .....................................................................................................................................5-19

Test 3 – VBUS and voltage balance .......................................................................................................................................5-20

Test 4 – solenoid valve ................................................................................................................................................................5-24

Test 5 – torch stuck open (TSO) or torch stuck closed (TSC) .........................................................................................5-25

Test 6 – plasma start ................................................................................................................................................................... 5-26

Test 7 – torch cap sensor ...........................................................................................................................................................5-27

Test 8 – fan .................................................................................................................................................................................... 5-27

Test 9 – pressure transducer .....................................................................................................................................................5-28

Test 10 – power switch trip coil ................................................................................................................................................5-28