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Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918SB‑0134 PP rev 8‑3‑2017
d. Reattach the front cover of the Alarm using the Phillips head fasteners at the four corners of the cover.
DO NOT OVERTIGHTEN. “Snug” the fasteners in place and verify that the cover is fully seated to the
enclosure base.
e. Perform step 2 above to verify the battery level and overall operation of the Alarm.
4. If the “BATTERY LOW” indicator illuminates at any time, replace the internal battery by performing the
following steps:
CAUTION:
The following steps should be followed being sure that there is no possibility of fluid ingress
into the alarm enclosure.
ATTENTION:
Les étapes ci-dessous doivent être suivies avec l’assurance qu’il n’y a aucune possibilité
d’entrée de fl uide dans l’enceinte de l’alarme.
Steps
a. Carefully open the 918 Series Alarm enclosure by loosening the Phillips head fasteners at the four
corners of the cover.
b. Turn off the power switch, SW5 (see Figure 1).
c. Disconnect input device(s) from the Alarm Circuit Board by unplugging the channel connectors from
the Alarm Circuit Board.
d. Disconnect the battery cable from the Alarm Circuit Board (J7). Gently depress the retaining tab of the
connector and pull the connector free (see Figure 6).
e. Remove and retain the two screws holding the battery assembly to the rear cover and remove the
battery assembly from the Alarm (see Figure 6).
Figure 6 Disconnecting the Battery from the Control Board
Retaining
Tab
Depress Retaining
Tab and pull gently
Figure 7 Removing/Replacing the Battery Assembly
f. Install and secure the new battery assembly into the rear cover using the two screws retained in the
previous step.
g. Connect the new Battery Assembly to the Alarm Circuit Board’s J7 being sure to fully seat the
connector. Gently tug on the cable to ensure the retaining tab has clicked into place.
h. Turn on the power switch, SW5 (see Figure 1).
NOTE:
If the 918 Series Alarm has been configured to operate with Normally Closed Contacts, the
Alarm should go into the alarm state when the power switch is turned on; silence this by pressing
the “Test/Cancel” button.
i. Test the Alarm by pressing and holding the “Test/Cancel” button for more than 5 seconds while listening
to the audible alarm and observing the Beacon and the Channel Alarm and BATTERY LOW indicators
(see Figure 1).
