Installing the Transformer Fuse
To install the 6.3 Amp transformer fuse:
1
Confirm that 115 VAC or 230 VAC is turned-off at the source.
2
Install the replacement fuse in the fuse-housing.
3
Close the fascia-door of the Sigma A-CP Fire Control Panel.
4
Connect NAC Power and Power inserts on the fascia-terminal strip of the Sigma A-CP Fire Control Panel.
5
Connect the red-lead of the recharging circuit to the positive terminal of the standby-battery.
6
Secure the retaining-screw to the fascia-door and the cabinet of the Sigma A-CP Fire Control Panel.
7
Turn on 115 VAC or 230 VAC at the power source.
8
Test the fire control panel by operating it to determine that it functions.
AC Input Fuse
The following procedures describe methods for removing and installing the 5 AC input fuse of the
Sigma A-CP Fire Control Panel.
Removing the AC Input Fuse
To remove the 5 Amp AC input fuse:
1
Turn off 115 VAC or 230 VAC at the power source.
2
Disconnect the red-lead of the recharging circuit from the positive terminal of the standby-battery.
3
Remove NAC Power and Power inserts from the fascia terminal strip of the Sigma A-CP Fire Control Panel.
4
Remove the retaining-screw securing the fascia to the cabinet of the Sigma A-CP Fire Control Panel.
5
Open the fascia-door of the Sigma A-CP Fire Control Panel.
6
Remove the AC input fuse from the terminal block housing.
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