MAINTAINING THE JACE-700
May 2, 2011
Cleaning
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JACE-700 MOUNTING AND WIRING GUIDE
Part Number 11694 Rev 1.6
29
Cleaning
If dust or metal filings are present inside the unit, clean with vacuum or compressed
air. Otherwise, no cleaning inside the unit is required. Optionally, if the cover
becomes dirty, you can wipe it with a damp cloth and mild detergent.
Required NiMH 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 is higher (that is,
50ºC or 122ºF), you should only expect the battery to last approximately one year.
The NiMH battery in the controller is fully discharged when factory shipped.
Additionally, NiMH batteries lose charge over time if not kept trickle-charged (for
more details, see
page 26). Therefore, even a new unit (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 the
page 31. See the next section
for a replacement
procedure.
Replacing the NiMH Battery
The replacement NiMH battery is an assembly, that is a custom battery pack with an
attached cable and connector plug. See
. To replace the battery, you must
remove power to the unit and remove its cover.
Caution
Use only NiMH battery packs approved for use with the JACE-700.
Procedure 5
Replacing NiMH battery assembly on a JACE-700 controller.
Step 1
Backup
the controller’s configuration to your PC using the appropriate
NiagaraAX software tool (for example, Workbench).
Step 2
Remove all power from the controller, including any sealed lead-acid bat-
tery. Wait for LED activity to stop—after a couple of minutes, all LEDs on
the unit should be off.
Step 3
Remove the cover. See
“Removing and Replacing the Cover,”
At this point you have access to the NiMH battery assembly (
).
