Vertiv 581126000, User Manual

Page: 120 / 208

Vertiv
| +24 VDC Power System User Manual (Section 6013) | Rev. G
120
Adding a Module Mounting Shelf to the Power System
NOTE!
Apply anti-oxide compound to all mechanical connections.
Procedure
DANGER! Observe the admonishments located at the beginning of this section.
NOTE!
Refer to
Figure 4
,
Figure 5
, and
Figure 6
as this procedure is performed.
1. On the rear of the new Module Mounting Shelf and the shelf installed directly above it, remove the AC
input and DC output covers.
2. On the bottom of the bottom existing shelf in the rack, remove cutouts from the plastic shield as shown
in
Figure 4 .
3. Install the new Module Mounting Shelf directly beneath the bottom existing shelf in the rack (no space
between units). Use the mounting hardware provided with the shelf.
Hardware build-up is: 12-24 x 3/4" screw and flat washer, (1) set per side.
12-24 x 3/4" screw and ground washer, (1) set per side.
Install the ground washers so the teeth dig into the paint on the mounting angles. Torque all screws to
65 in-lbs.
4. Install the furnished output busbar links as shown in Figure 5 . Apply electrical anti-oxidizing compound
to all busbar mating surfaces.
Hardware build-up for the connection to the new shelf is:
1/4-20 x 1" bolt, 1/4" flat washer, 1/4" Belleville lock washer.
Hardware build-up for the connection to the existing shelf is:
1/4-20 nut, 1/4" flat washer, 1/4" Belleville lock washer.
Install the Belleville lock washer so the concave side is towards the busbar. Torque all bolts and nuts to
60 in-lbs.
5. If the New Shelf Accepts DC-DC Converters: Perform the Procedure for Connecting DC-DC
Converter Output Cables detailed in the next section. Then return here and proceed to the next step.
If the New Shelf Does Not Accept DC-DC Converters: Proceed to the next step.
6. Plug the CAN bus connector on the cable exiting the top of the new shelf into the mating connector
exiting the bottom of the shelf above it.
7. Reinstall the output busbar shield on the rear of all Module Mounting Shelves.
8. Reinstall the AC covers previously removed from the existing shelf.
9. Refer to the Installation Instructions (Section 6012) and connect AC input power to the new shelf.