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Appendix C - Module Replacement - Page 5
990-7171-001
Main Intelligence Module Replacement
1. Remove the grill cover from the top level of the Power Array.
The intelligence module resides under the redundant intelligence module in the upper right corner of the frame.
Note: If a functioning RIM is installed, it will provide limited control of the Symmetra
TM
until the replacement MIM
is installed. If a functioning RIM is not installed, either the Symmetra
TM
must be placed in manual bypass mode or the
load equipment must be switched off. To place the Symmetra
TM
in manual bypass, switch the maintenance bypass
switch to the “on” position.
Important: When the Symmetra
TM
is in bypass mode, the load equipment is unprotected from power failure.
2. Use a flathead screwdriver to release the flip latch.
3. Unscrew and release the retaining screws.
4. Slide the MIM out of the frame.
5. Slide the replacement MIM into the frame. If Symmetra
TM
was placed in manual bypass in step 1 above, return
to normal operation by switching the maintenance bypass switch back to the “off” position.
Replacement MIM Verification
From the startup screen, press any key to open the top level menu screen. Follow the sequence in below to ensure
that the replacement MIM is functioning properly. (Status: On & OK).
Redundant Intelligence Module Replacement
1. Remove the grill cover from the top level of the Power Array.
The redundant intelligence module resides above the intelligence module in the upper right corner of the frame.
Note. A RIM can only be replaced if a functioning MIM is installed or the load equipment is switched off.
2. Use a flathead screwdriver to release the flip latch.
3. Unscrew and release the retaining screws.
4. Slide the RIM out of the frame.
5. Slide the replacement RIM into the frame.
Replacement RIM Verification
From the startup screen, press any key to open the top level menu screen. Follow the sequence in below to ensure
that the replacement RIM is functioning properly. (Status: On & OK).