Artesyn Centellis 2000 Shelf - DC Installation and Use (June 2014) - Manual (Page 95)

FRU Installation
Centellis 2000 Shelf - DC Installation and Use (6806800G45F) 95
3. Switch the breaker of the PEM to be replaced to the OFF (tripped) position, if it is not
already in this position.
4. Unfasten the two captive screws of the PEM.
5. Remove the PEM from the shelf bay by pulling the PEM handle.
6. Switch the breaker on the replacement PEM to the OFF (tripped) position, if it is not
already in this position.
7. Insert the replacement PEM.
8. Fasten the two PEM captive screws.
9. Turn on the feed power if it is not already turned on.