TM 5-6350-262-14/6
NAVELEX 0967-LP-466-9062
TO 31S9-4-33-1
5-13.1.
Maintenance of Batteries
(5) Remove transformer (31).
NOTE
a. Description The Audible Alarm contains a
Remove wire bundle ties only as
rechargeable lead acid battery; it is a 24-volt device with a
required to separate the power
2.5 ampere-hour capacity. Although the battery contains
transformer.
wet cells, it is of the sealed maintenance free type (no
b. Installation
liquid maintenance required.) Internal low pressure (2 psi)
(1) Install power transformer (31) using four
vent caps are provided for each cell to minimize the
(2) Connect transformer (T1) interconnecting
probability of electrolyte leakage during shipment and
wires shown in figure 5-2.
handling.
b. Battery Storage and Recharging.
(3) Connect battery wires.
(4) If required, tie wiring into neat bundle
(1) Since the battery is of the lead acid type it
using lacing cord.
has a limited shelf life and requires recharging at periodic
(5) Set POWER switch to ON position.
intervals when in storage. If a spare Audible Alarm is
5-12.
Audio Output Transformer Replacement
available, it may be utilized to periodically recharge stored
WARNING
batteries in accordance with the instructions of section d. If
Power to the JSIID systems must be
no spare Audible Alarm is available then the recharging
instructions given in section e should be followed.
shut down before any repairs or
replacements can be performed on the
(2) At storage temperatures of 70-75F., the
audible alarm if connected in system.
batteries will require recharging at intervals no longer than
a. Removal
6 months. The dates for recharge of a specific battery are
(1) Set POWER switch to OFF position.
marked on the battery packing cases. If at all possible, the
(2) Disconnect battery wires from battery.
batteries should not be stored at temperatures above 80F.
(3) Disconnect the following wires from
for extended (longer than a few days) periods of time. High
terminal TB3 shown in figure 5-2.
temperature storage will reduce the time between required
(4) Remove two screws (14, fig. C-1) and
recharges and may shorten the battery service life. If it is
two washers (15).
impossible to store the batteries at 70-750F., then the
(5) Remove audio output transformer (16).
batteries must be recharged at intervals specified in the
b. Installation.
following table, disregarding the 6 month interval specified
(1) Install audio output transformer.
on the packing case. Batteries must never be stored at
(2) Connect audio output transformer
temperatures above 100F. or below -30F.
Storage temperature ( F Maximum time between recharge
interconnecting wires to TB3 as shown in figure 5-2.
(3) Connect battery wires to battery terminals.
70F.
6 months
(4) Set POWER switch to ON position.
80'F.
5 months
5-13.
Electronics Assembly Replacement
900F.
4 months
WARNING
100F.
3 months
c. Periodic Testing of Operational Batteries. Prior
Power to the J-SIID systems must be
shut down before any repairs or
to initial installation, the batteries should be fully charged
replacements can be performed on the
and tested in accordance with the instructions in d and e
audible alarm if connected in system.
below. Once this initial charging and testing has been
a. Removal
accomplished, the batteries should require no maintenance
(1) Set POWER switch to OFF position.
for a period of one year at ambient temperatures below
(2) Remove two screws (7, fig. C-1), two lock
100'F., and six months at temperatures above 100'F. At the
washers (8) and two flat washers (9).
conclusion of these operating periods, the batteries should
(3) Unplug P1 (10).
be retested in accordance with d below. Since the batteries
(4) Remove four screws (5).
have been operating in the equipment they do not require
(5) Remove electronics assembly (11).
recharging prior to test. The tests in d below should
b. Installation.
thereafter be performed at six month intervals for items
(1) Install electronics assembly (11).
operating at temperatures below 100F. and three month
(2) Replace four screws (5).
intervals for items operating above 100'F. Expected battery
(3) Plug in connector P1 (10).
service life should be 2 to 4 years below 100=F., and 1 to 3
(4) Replace two screws (7), two lock washers
years above 100F.
(8) and two flat washers (9)
d. Testing of Batteries.
(5) Set POWER switch to ON position.
Change 2 5-4
