Maintenance T1689 Technical Manual Rev 07
Removal of Modules for service or repair MV3000 Air Cooled DELTA
Page 144
8.4.7 Removal Of DELTA Transistor Module
• The modules are delicate and vulnerable to damage – handle carefully.
- Only lift or move them by use of the lifting point.
- Lay them down on the plain left-hand face when not fitted in a frame.
- Do not leave modules unsupported in the upright position.
A DELTA transistor module should be removed from the enclosure by following the steps below. Refer to
Section 5: CDM Assembly, for further information:
8.4.7.1 Removal Of Electrical Connections
a) Remove the SMPS module by following the instructions in Section 8.4.5: Removal Of An SMPS Module;
b) Disconnect the control ribbon cable by unplugging the connector;
c) Carefully cut and remove any cable ties securing the control ribbon cable to the SMPS plate. It may be
necessary to release control ribbon cables to other DELTA modules if they run across the module to be
removed;
d) Remove the SMPS mounting plate by loosening the M5 fixings and lifting clear;
e) Remove the terminal shrouds;
f) Disconnect the a.c. phase cables or busbars, first noting their positions;
g) Disconnect the d.c. cables or busbars;
8.4.7.2 Removal Of The Module
a) Remove four M6 fixing screws (two from the top of the module and two from the bottom);
b) Slide the module forwards until the stop pin is reached;
c) Connect a suitable crane shackle to the lifting hole in the top of the module;
d) Take up the weight of the module, lift it over the stop pin and withdraw from the enclosure;
e) Move the module into a safe position with its left hand side (when viewed from the front) laid on a flat
surface.
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