Specifications

Maintenance and Repair 5
SHM80001
SAFETY HI-TECH
Quaestor-SZU Releasing Fire Control Panel - Installation and Operation Manual
Revision E03.04
57 of 155
Installing the Standby-Batteries
Reference Section 3, Installation for installing the standby-batteries.
Replacing Fuses
The Quaestor-SZU Releasing Fire Control Panel contains a battery fuse and an AC input fuse to protect it against
circuit overloads. The battery fuse is a 3.0 Amp slow blow and the AC input fuse is a 1.6 Amp slow blow.
Reference Section 1, Installation Wiring, Rechargeable Battery Circuit for more information about the battery fuse.
Reference Section 1, Installation Wiring, Main Supply Circuit for more information about the AC input fuse.
During the life of the product it may be necessary to replace one or both of the fuses to restore operation.
Replace a fuse only after diagnosing and replacing components responsible for causing the fuse failure. Fuse failure is
not a condition caused by the fuse. Diagnose and replace components in the circuit before replacing the fuse and
then test the Quaestor-SZU Releasing Fire Control Panel for proper operation.
Battery Fuse
The following procedures describe methods for removing and installing the battery fuse of the Quaestor-
SZU Releasing Fire Control Panel.
To remove the battery fuse:
1 Turn off 115 VAC or 230 VAC at the power source.
2 Unlock and then open the door of the Quaestor-SZU Releasing Fire Control Panel.
3 Disconnect the red-lead of the recharging circuit from the positive terminal of the standby-battery.
4 Disconnect cabling connections at the EXTING. terminals of the Quaestor-SZU Releasing Fire Control Panel.
5 Remove two retaining-screws securing the fascia to the cabinet of the Quaestor-SZU Releasing Fire Control Panel.
6 Remove the fascia from the cabinet of the Quaestor-SZU Releasing Fire Control Panel.
7 Rotate the fascia so that the printed-circuit-board side of the assembly is facing up.
8 Locate the fuse housing on the printed-circuit-board that contains the battery fuse.
9 Remove the upper-half of the fuse-housing by grasping and pulling upward at the center of fuse-housing.
10 Remove the battery fuse from the upper-half of the fuse-housing