Tridium JACE-6 Series, Mounting And Wiring Instructions

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JACE-6 Mounting and Wiring Instructions
Published: April 19, 2007 Part Number 10821
Maintaining the JACE-6
Cleaning
18
Maintaining the JACE-6
This section provides information on the following topics:
•
Cleaning
•
Required Battery Maintenance
•
Replacement Parts
•
Replacing the JACE-6 base assembly
•
Returning a Defective Unit
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 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 battery should see
relatively few discharges. Therefore, ambient temperature has more to do with determining the life expectancy
of the battery than does any other factor. If the JACE-6 is installed in a conditioned space, the 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 JACE-6 controller is fully discharged when factory shipped. Additionally, NiMH
batteries lose charge over time if not kept trickle-charged (for more details, see
“About the Battery,” page 16).
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 JACE-6 monitors the 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
“Standard Replacement Parts” section on page 19.
Replacing the Battery
The replacement NPB-BATT battery is a complete assembly, that is a custom NiMH battery pack pre-attached
to a battery bracket. See
Figure 6 on page 15.
Caution
Use only NiMH battery packs approved for use with the JACE-6.
To replace the battery, proceed as follows:
Procedure 5 Replacing NiMH battery assembly on a JACE-6.
Step 1
Backup
the JACE-6 controller’s configuration to your PC using the appropriate NiagaraAX software
tool (for example, Workbench).
Step 2
Remove power from the JACE-6.
Wait for LED activity to stop—after several seconds, all LEDs on the JACE-6 should be off.
Step 3
Remove the cover. See “Removing and Replacing the Cover,” page 6.