Emerson NetSure 721NPBB User Instructions page 24

NetSure ™ -48V DC Power System
User Instructions, UM582127000 (Issue AD, January 20, 2014)
Figure 10. Installing a Field Expansion Module Mounting Shelf Spec. No. 588705300
Busbar Rear Shield
Cut-Out Panel
Front
Spec. No: 582127000
Model No: 721
NPBB
1. Remove busbar rear shield from
existing rectifier/converter shelves.
Remove the cut-out panel
from the busbar rear shield.
2. Remove hardware from the
lowest module mounting shelf's
-48V, return, and +24V (if present)
busbars.
3. Install the expansion module
mounting shelf into the rack.
4. Remove busbar rear shield from
expansion module mounting shelf.
5. Install the busbars provided
with the expansion module
mounting shelf between the
shelves. Torque to 60 in-lbs.
6. Re-install the rear busbar
shields previously removed.
[16]
Rear
Rear
Code: UM582127000
Issue AD, January 20, 2014