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Recharging Batteries with Auxiliary battery Charger
Table 5-2. Audible Alarm Performance Standards

TM-5-6350-262-14-6 Alarm Audible BZ-204( )/FSS-9(V) FSN 6350-228-2514 Manual
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TM 5-6350-262-14/6
NAVELEX 0967-LP-466-9062
TO 31S9-4-33-1
accordance with (1) through (4) above may now be
method) or by lacing a 5 watt resistor of between 10 and
stored for a maximum of 6 months at 70-75F. before
30 ohms in series with the battery. The exact value of
requiring recharge. It is not recommended that batteries
the resistor will vary depending upon the length of time
be stored for extended periods of time above 80F.
that has elapsed since the battery was last charged and
since this will significantly reduce the allowable storage
the storage temperature.
NOTE
time and may reduce the service life of the batteries.
The value of resistance which must be
used to limit the current will decrease as
WARNING
the battery becomes charged.  When
Power to the JSIID systems must be
the battery is initially placed on charge
shut  down  before  any  repairs  or
use a 30 ohm resistor and verify that the
replacements can be performed on the
current is below 0.300 amps. Once the
audible alarm if connected in system.
battery  has  partially  charged,  this
a.  Removal
resistance may be decreased in order to
shorten the charging time. In no case
(1) Place POWER switch to OFF position.
should a series resistor smaller than 10
(2) Disconnect battery wires from battery.
ohms be used.
(3) Remove one screw (17, fig. C-1) and
(3) As the battery charges, the current
washer (18) and remove the battery clamp bracket (19)
which it will accept will gradually decrease. When the
and remove battery (20)
charging current is reduced to approximately 0.050
AMPS the battery is recharged and must be removed
b.
Installation.
from the charger.
(1) Install  battery  (20)  with  positive
NOTE
terminal at top of inner enclosure.
NOTE
Some batteries may still accept 25-50
percent more current than specified,
Battery  wire  terminals  and  battery
even when fully charged.
These
terminals are mechanically polarized to
batteries should be allowed to remain
prevent incorrect installation.
on charge for a period of approximately
(2) Replace battery bracket clamp (19).
48 hours.
(3) Connect the two battery wires.
(4) The battery should now be tested in
(4) Place the POWER switch in the ON
accordance with the instructions in d above.
position.
(5) Batteries recharged and tested in
Section V. DIRECT SUPPORT TESTING PROCEDURES
5-15.  General
5-16.
Performance Standards
This section contains a performance standard test
a.  Test Equipment and Materials.
procedure for use by direct support and intermediate
(1) Power Supply (Requirements-Voltage: 0
maintenance personnel to determine whether the
to 40 V dc and current: 25 to 50 ma).
performance of the repaired audible alarm is satisfactory
for installation. These procedures may also be used at
(2) VOM TS352B.
the  installation  site  by  disconnecting  system
(3) AC Power Plug - 3 leads.
interconnecting wiring from terminal Li-1, -2, and -3
(4) Resistor, 10K, 1%.
utilizing system supplied 27 volts dc in lieu of the power
b.
Initial Test Equipment Settings.
supply.
NOTE
(1) Connect power supply positive lead to
This test cannot be performed on
alarm input L2-1. Connect negative lead to L2-2.
audible alarm units operating in a
(2) Set power supply output control for +
system without interrupting all security
4.5 V dc.
functions.
Notify applicable security
c.  Procedure. Refer to table 5-2.
personnel.
Change 2 5-4.3






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