InteliATS
NT
PWR, SW version 2.5, ©ComAp – May 2015 106
IA-NT- PWR-2.5-Reference Guide.pdf
Maintenance
Backup battery replacement
The internal backup battery should be replaced approx. every 5-7 years. Replace the battery, if the
alarm Low BackupBatt occurs.
HINT:
When internal RTC battery becomes flat, controller function (e.g. Ready for standby) does not change
4until controller power supply is switched off. Some time before the battery is completely exhausted, a
warning message appears in Alarmlist: "RTCbatteryFlat".
After the next power switch on (with flat battery already) controller:
Stays in the INIT state (not possible to run genset)
All History records disappear except of “System log: SetpointCS err” record
Time and Date values are set to zero
Statistics values are random
For battery replacement follow these instructions:
1. Disconnect all terminals from the controller and remove the controller from the switchboard.
2. Release the rear cover using a flat screwdriver or another suitable tool.
3. Remove all plug-in modules.
4. The battery is located in a holder on the circuit board. Remove the old battery with a small
sharp screwdriver and push with a finger the new battery into the holder. Use only CR1225
lithium battery.
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