Part Number 12762 Rev 1.1 | April 30, 2014 REPLACEMENT PARTS
NiMH Battery Installation and Maintenance
28 NETWORK CONTROLLER 3E & 6E MOUNTING AND WIRING GUIDE |
Step 8 Set the new NiMH battery assembly on top of the option card slots, over the
option card end plates. Ensure the bracket mounting holes are aligned with
the standoffs.
Step 9 Place the four screws through the battery bracket, option card end plates,
and into the standoffs on the controller’s base board. Using a screwdriver,
hand tighten these screws.
Step 10 Replace the cover.
Step 11 Restore power to the controller and verify normal operation.
Battery maintenance
Battery life expectancy is a function of its discharge cycles (the number of discharges
and their depth) and the ambient temperature of the battery during normal
operation. In most applications, the NiMH battery should see relatively few
discharges. Therefore, ambient temperature has more to do with the life expectancy
of the battery than does any other factor. If the controller is installed in a conditioned
space, this battery should provide dependable service for approximately three years
(average). In an environment where the operating temperature reaches the highest
range (50ºC or 122ºF), you should only expect the battery to last around one year.
A new NiMH battery is typically only partially charged when shipped. Additionally,
NiMH batteries lose charge over time if not kept trickle-charged (for more details,
see “NiMH battery pack,” page 24). Therefore, even a new or replacement battery
will require up to 18 hours of powered operation before it can provide reliable
backup power (is at full charge).
The controller monitors the NiMH battery and periodically loads the battery to test
its ability to maintain battery-backed functions. Investigate any battery trouble
message, and check the battery connections to the unit. Replace the battery as
required. To order a new battery, see “Standard Replacement Parts,” page 29.
Battery disposal
Please dispose of the used NiMH battery in accordance with local, state, and federal
regulations.
Warning Do not incinerate or mutilate the battery, as this may cause it to burst or
release toxic materials.
If regulations specify returning the old battery to a recycling center, but no
acceptable recycling center can be found, please return the old NiMH battery pack
to Tridium for proper disposal.
Replacement Parts
Servicing the controller may call for replacement parts. There are three categories of
parts:
• Non-replaceable Parts
• Standard Replacement Parts
• New Replacement Unit
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