CUSTOMER/OPERATOR SERVICE
62
Manual 0-2470
This section explains how to remove and replace any of the
replaceable subassemblies listed in the Troubleshooting Guide.
Disconnect primary power to the system before disassembling
the torch, leads, or power supply.
There are eight mounting screws with nuts which secure the
enclosure. Lay the power supply on its side with the mounting
screw heads facing up. Remove the mounting screws and care-
fully lift the upper enclosure half from the chassis.
The only reason the main transformer should be replaced is if the
cores are cracked due to shipping damage or the unit being
dropped. Minor chips are normal. If any burning or arcing is
visible on the main transformer, return the unit to an authorized
service center.
To remove the transformer:
1. Remove the two mounting nuts on the FET board and the
four mounting nuts on the pilot board which fasten the
transformer leads to the PC boards.
2. Remove current sensor plugs from pilot and LDD PC boards.
3. Remove the four screws which hold the mounting plate to the
bottom chassis.
4. Carefully remove the transformer from the unit.
5. Install the replacement transformer by reversing the above
procedure. While tightening the nuts on the leads, make sure
the leads do not twist so that one could short against another.
WARNING
Opening the Enclosure
Main Transformer (T3)
5.08 SERVICE PROCEDURES
Содержание CE CutMaster 50
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