80459-641-01E Model 6 Motor Control Centers
10/2012 Section 6—Maintaining the MCC
© 1999–2012 Schneider Electric All Rights Reserved
61
ENGLISH
3. Loosen the captive fasteners (see Figure 85) on the door and open it.
NOTE: Arc-rated units have additional fasteners at the top-middle and
bottom-middle of the door that must be loosened to open the door (see
Figure 74 on page 57).
4. Check for live circuits using a properly rated voltage sensing device.
De-energize any voltage sources.
NOTE: Removal of the control station plate may be necessary to
perform Steps 5 and 6. To remove the control station plate, follow these
steps:
a. Loosen the captive mounting screws holding the plate to the front of
the unit.
b. Remove the plate from the unit (see Figure 86).
c. Re-attach the plate after disconnecting the load wires and control
terminal block.
NOTE: Do not disconnect the wires to the control station plate.
5. Disconnect the power wiring from the starter terminals. Tag the
terminations for re-installation.
6. Remove the top portion of the pull-apart control terminal block to which
field wiring is connected.
7. Push the power leads and the top portion of the control pull-apart
terminal blocks through the wiring port and into the vertical wire trough.
Figure 84: Operator Handle in the OFF Position
Figure 85: Loosening Captive Fasteners
Figure 86: Control Station Plate Removed
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