Artesyn Centellis 4410 (AXP-1410) Installation and Use (July 2014) - Manual (Page 98)

FRU Installation
AXP 1410 Installation and Use (6806800H70L) 98
10.Remove the DC power cable from the dual lug bolts on the PEM you are replacing,
being careful to place the two cables so they cannot short to each other or to other
conductors.
11.Loosen the standoff/lockout screw extensions and remove the PEM from the slot
by pulling straight out of the rail guides.
12.Remove the standoff/lockout screw extensions and put them aside to use when
installing the new PEM.
4.3.3 Installing the PEM
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.
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.