Artesyn Centellis 4410 (AXP-1410) Installation and Use (July 2014) - Manual (Page 96)

FRU Installation
AXP 1410 Installation and Use (6806800H70L) 96
Replacing one PEM is done while the other PEM is in operation. Having the PEM located in the
shelf is critical to maintaining proper airflow and cooling of the shelf. Steps in which a PEM is
removed from a slot and reinserted should be completed within 3 minutes to maintain the
shelf within safe operating temperatures.
Removal Procedure
To remove a PEM follow the steps.
1. Locate the target power input cable’s terminals at the branch circuit or power
distribution unit. Open the external circuit breakers that provide DC feed power to
the PEM you are replacing.
2. Lock and tagout the circuit breakers on the branch circuit or power distribution
unit.
Read all cautions and warnings, and ensure the equipment is properly grounded by
reviewing the procedure in
Grounding the System on page 84 , and follow these steps. The
PEM has multiple power sources. This procedure should be followed precisely to ensure the
PEM is isolated from all power sources before removing the PEM from the shelf, or removing
the plastic terminal block lug cover.
This procedure assumes that the redundant PEMs are powered on in the shelf.
OFF ON OFF ON
-48 VDC RTN
-48 VDC
-48 VDC RTN
-48 VDC
IS HS OOS