PCM-875A System
Table of Contents
iv
Section 6 Troubleshooting Page
6-(_)
6.1 Troubleshooting PCM-875A Plasmarc System ................................................
1
6.2 Console .........................................................................................................
2-8
6.2.1 Power Light (PL1) does not come on.......................................................
2
6.2.2 No Air Flow.............................................................................................
2
6.2.3 Power Light is on but nothing happens when signal is given to fire with
no fault light .........................................................................................
3
6.2.4 Fault light activates when torch fire signal is given ....................................
4-5
6.2.5 Air is on but nothing happens when torch fire signal is given ....................
6
6.2.6 High Frequency and Pilot Arc are on but no main arc transfer ..................
7
6.2.7 Poor Cutting Performance.......................................................................
7
6.2.8 Air does not shut off................................................................................
7
6.2.9 Main arc difficult to start .......................................................................... 8
6.3 Reference Voltage Checks .............................................................................. 9
6.4 PT-20AMX Torch Troubleshooting10 .............................................................. 10-11
6.4.1 Insufficient Penetration ............................................................................ 10
6.4.2 Main Arc Extinguishes .............................................................................
10
6.4.3 Dross Formation .....................................................................................
10
6.4.4 Double Arcing.........................................................................................
11
6.4.5 Uneven Arc.............................................................................................
11
6.4.6 Unstable Cutting Conditions.................................................................... 11
6.4.7 Main Arc Does Not Strike ........................................................................ 11
6.4.8 Poor Consumable Life.............................................................................
11
6.5 230V Power Console Electrical Drawings ........................................................
12-17
6.5.1 Schematic ..............................................................................................
12-13
6.5.2 Wiring Diagrams ..................................................................................... 14-17
6.6 400V Power Console Electrical Drawings ........................................................
18-23
6.6.1 Schematic ..............................................................................................
18-19
6.6.2 Wiring Diagrams ..................................................................................... 20-23
6.7 Remote Arc Starter Schematic........................................................................
24
Section 7 Replacement Parts
Page 7-(_)
7.1 General ..........................................................................................................
1
7.2 Ordering .........................................................................................................
1
7.3 PCM875A Power Console – 230V ..................................................................
2-9
7.4 PCM-875A Power Console – 400V ................................................................. 10-18
7.5 Remote Arc Starter......................................................................................... 19-21
7.6 PT-20AMX Plasmarc Cutting Torch.................................................................
22-25
Customer/Technical Information
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