C&D Technologies 41-6976 RB VRLA Rack - Manual (Page 5)

Page 5 of 9
VRLA
10. Seismic Racks – Install hold down rod on each tier’s end support frame
Mounting hardware starting at top of end-frame surface
Torque to 46 ft lbs
13 ¾” long Threaded rod 3/8” – 16 (End support frame)
3/8” Hex nut 3/8” Flat washer
3/8” Flat washer 3/8” – 16 Hex nut
11. Prepare Battery Terminals
Remove any pre-existing grease then lightly brush terminal contact surfaces with a brass brush or Scotch Brite
type pad. Coat terminals with anti-oxidant NO-OX-ID type grease or equivalent.
12. Install Batteries
Center KYDEX insulators on each battery support angle. Starting at the center of the LOWEST tier, install
batteries working out to each end. Leave a MIMIMUM of 0.5” between batteries for required ventilation. Pay
particular attention that each tier of batteries is oriented the same direction.
13. Seismic Racks – Install spacer blocks and secure end braces to battery support rail
End Brace
Mounting Hardware – torque to 46 ft lbs
3/8” – 16 Hex bolt 3/8” Flat washer
3/8” Flat washer 3/8” Star washer
Bracing Bracket 3/8” Hex nut
Support Rail
14. Affix identification labels to batteries and racks
Refer to the system wiring schematic.
The battery having the positive output for the string should be labeled as #1. Continue labeling the remaining
batteries in this string in ascending sequential order as they are connected in series from the #1 battery. The
battery at the negative output for this string will be the highest numbered battery.
Battery numbering sets are available through your C&D Dynasty Distributor. Individual strings that are connected
in parallel should be uniquely identified as “A”, “B” and “C”.
15. Install Ground Strap (supplied by installer) to Rack
Each vertical member of the end-support frame has 2 each 15/32” holes on 1.0” centers. They accommodate a
single hole or a 2-hole lug. The National Electrical Code 150-166 specifies conductor size will not be smaller than
the largest system conductor and in any case not smaller than #8 copper (#6 aluminum). The end of the ground
strap not attached to the rack should be connected in accordance with applicable codes.
End Support
Frame
(Inside View)
Threaded
Rod
Mounting
Hardware
End brace mounting holes in battery support rail
Support Rail Assembly with Batteries, Spacers, and End Braces
Battery
End Brace
with mounting
hardware
Spacer
Block
Spacer block between end
brace and battery not
required when holes in end
brace match up to holes in
support
rail.