Battery power sources

TM 3-6665-225-12

CAUTION

(3) Set power switch (3) to either 115V or

Before airdrop operations, empty the

220V position, determined by input voltage to

liquid from the M43 detector unit rese-

which M10 power supply is connected. POWER

rvoir assembly. Internally splashing

ON indicator (2) must light.

liquid may cause the M43 detector unit

(4) Set annunciator (8) to its "all white"

to become inoperative and cause the

position by turning it fully clockwise. Then rotate

mission to be aborted. Do not perform

annunciator full counterclockwise.

the following procedures until after the

(5) Position power switch (3) to OFF.

airdrop.

(6) Disconnect 115V/220V cable (9) from

power source.

a. Remove one solution reservoir assembly (5,

fig. 1-6) from drawer (1) of the M229 refill kit.

d. M229 Refill Kit

b. Prepare solution as described in figure 2-3.

(1) Check date on M229 refill kit sleeve (4,

fig. 1-6). Discard M229 refill kit with expired

c. Install Reservoir Assembly.

date.

(1) Release four clamping catches (12, fig.

(2) Check that each reservoir assembly (5) is

1-2) from catches (13) and remove detector unit

filled to above line on container. Check that liquid

assembly (6) from bottom case assembly (9).

in reservoir assembly (5) is clear, not discolored or

WARNING

contaminated. Discard defective reservoir assem-

Solution in reservoir assembly is

blies in M229 refill kit. Check that sensitivity

caustic. Avoid contact with eyes and

check bottle (6) contains enough liquid for mis-

mouth. Flush from skin with water.

sion.

(3) Check contents of M229 refill kit to

CAUTION

assure that enough reservoir assemblies (5) and

Keep weight assembly (12.1, fig. 1-3)

air filters (10) are available for the mission.

free from dirt after removing reservoir

assembly.

e. Battery power sources

(2) Hold detector unit assembly upright by

(1) BA3517/U battery (7, fig. 1-1). Inspect

its handle (2, fig. 1-3) and unscrew reservoir

BA3517/U battery for bent or broken connector

assembly (12) counterclockwise. Allow weight

pins that could prevent proper electrical connec-

assembly (12.1) to hang down. Discard used

tion and frayed or broken cable assembly insula-

reservoir assembly (12) in accordance with

tion. Inspect the case for damage, such as cracks,

standing operating procedures.

that could prevent proper use of battery. Replace

(3) Remove and discard cap from prepared

BA3517/U battery if suspect of damage.

solution reservoir assembly.

(2) BB501/U battery and M168 cable (4

(4) Center new reservoir assembly under

and 6, fig. 11). Inspect and service BB501/U

weight assembly and screw reservoir assembly

battery in accordance with TM 11-6140-203-

clockwise into m o u n t i n g hole in detector

15-3. Inspect M168 cable for bent or broken con-

assembly. Insure tight seal by turning reservoir

nector pins, frayed or broken cable assembly in-

D-ring clockwise.

sulation, and other damage that could prevent

NOTE

proper electrical connection and use of battery.

If the M43 detector unit is to be back-

Replace discharged or defective BB501/U battery

packed, position bottom case assembly

with freshly charged battery and replace M168

(9, fig. 1-2) so that instruction plate (3,

cable assembly if suspect of damage.

fig. 1-4) is on side opposite 24 VDC IN-

f. Mounting Kit. If a mounting kit is part of

PUT receptacle (11, fig. 1-2).

the system configuration, check that vehicular

(5) Check that seal (1, fig. 1-4) is completely

mounting components are secure. Check cables

seated in groove around top of bottom case

for damage (cuts, chafed insulation, exposed

assembly. Assemble detector unit assembly (6,

wires ) and secure connections. Return vehicles to

fig. 1-2) to bottom case assembly (9) and secure

organizational maintenance that have loose

clamping catches (12).

mounting kit components and cables that are sus-

d. Install Air Filter

pect of damage.

NOTE

If air filter has been installed in M43

2-7. Pre-Startup Procedures

detector unit for less than 24 hours,

These procedures prescribe the method of pre-

remove one air filter package (7, fig.

paring and installing the solution reservoir assem-

1-6), disregard (1) through (5) below,

bly and installing the air filter in the M43 detec-

and proceed to paragraph 2-8.

tor unit.

2-4