Section 5
Maintenance and Repair
This section provides procedures for maintaining and repairing the Sigma A-CP Fire Control Panel.
Cleaning the External Cabinet and Fascia-Door
Clean the external cabinet and fascia-door of the Sigma A-CP Fire Control Panel with a damp cloth. Do
not clean these surfaces with detergents or solvents. Do not permit water to enter the cabinet during
the cleaning process.
Inspecting Batteries
Inspect the standby-batteries annually to determine the connection integrity to the Sigma A-CP Fire
Control Panel. The fire control panel contains valve-regulated, lead-acid batteries to provide standby
power in the event of mains failure. The standby-batteries have a life expectancy of 3 to 5 years. Test
the standby-batteries annually in accordance with the battery manufacturer’s recommendations to
determine their suitability for continued standby operation.
Replacing Standby-Batteries
Replace standby-batteries when the service period reaches 3 to 5 years or when the low-battery
indicator illuminates on the power supply. Specify replacement batteries that are valve-regulated,
lead-acid.
Removing the Standby-Batteries
To remove the existing standby-batteries:
1 Disconnect the jumper-lead between the standby-batteries.
2 Disconnect the red-lead from the positive terminal of one standby-battery.
3 Disconnect the black-lead from the negative terminal of the other standby-battery.
4 Remove the standby-batteries from the bottom of the Sigma A-CP Fire Control Panel cabinet.
5 Re-cycle the standby-batteries according to manufacturer instructions.
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