Figure 2-7. M43 detector unit employing a BB501/U battery and M168 cable.

TM 3-6665-225-12

M43 detector unit

6 Cap

24 VDC INPUT receptacle

7 Connector

Connector

8 Cap

Cap

9 BB501/U battery

M168 cable

Figure 2-7. M43 detector unit employing a BB501/U battery and M168 cable.

pared solution reservoir assembly.

JUST knob (5, fig. 2-1), rotate it fully counterclock-

(9) Center new reservoir assembly under weight

wise, and release it.

assembly and screw reservoir assembly into moun-

(13) Press the HORN VOL-BATTERY TEST

ting hole in detector assembly. Insure tight seal by

knob (6) and check that the meter (1) indicates 24

turning reservoir assembly D-ring clockwise.

minimum.

(10) Check that seal (1, fig. 1-4) is correctly

(14) If an M10 power supply is used, set the

seated in groove around top of bottom case assem-

power switch (3, fig. 2-2) to OFF. Press the HORN

bly. Assemble detector unit assembly (6, fig. 1-2) to

VOL-BATTERY TEST Knob (6, fig. 2-1) and check

bottom case assembly (9) and secure clamping

that the meter (1) indicates 24 minimum (standby

catches (12).

battery voltage). Set the power switch (3, fig. 2-2) to

NOTE

the correct voltage position. Turn the annunciator

If M43 detector unit is to be backpacked,

(8) clockwise, then fully counterclockwise.

position bottom case assembly (9, fig. 1-2)

(15) Unscrew RAINSHIELD assembly (1, fig.

so that instruction plate (3, fig. 1-4) is on

1-3) from handle (2). Pull rainshield (13) from

the side opposite the 24 VDC INPUT con-

adapter (14). Screw rainshield (13) into handle. Un-

nector (11, fig. 1-2).

screw plug (1, fig. 2-6) from AIR INLET assembly

(11) Connect power source connector to 24

cover (4). Screw adapter (2, fig. 2-8) into cover (3).

VDC INPUT connector (11, fig. 1-2). M43 detector

(16) Remove FLOWMETER (3, fig. 1-3) from

unit horn (2, fig. 1-2) will sound in approximately

handle (2). Insert and twist FLOWMETER firmly

15 minutes.

clockwise into top of AIR INLET assembly cover (4,

(12) When horn sounds, press the ZERO AD-

fig. 2-6). Press down on top of FLOWMETER. If

2-12

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