Chapter 5. PREPARATION FOR SHIPMENT AND ADMINISTRATIVE STORAGE

TM 3-6665-225-12

CHAPTER 5

PREPARATION FOR SHIPMENT AND ADMINISTRATIVE STORAGE

Section I. PREPARATION FOR SHIPMENT

5-1 M43 Detector Unit

(11) Press handcrank (2) in, rotate the handcrank

50 turns, and release it. Do not pull the handcrank out.

a. General. Before the M43 detector unit is shipped to

(12) Allow M43 detector unit to run for 4 minutes.

another organization, it must be cleared of residual

Then disconnect power source from the 24 VDC INPUT

solution and inspected, the meter and handcrank must

connector (11, fig. 1-2).

be protected from damage, and all ports must be closed.

(13) Release four catches (12) and remove detector

b. Procedure.

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

(1) Disconnect power source from 24 VDC INPUT

(14) Hold detector unit assembly upright by its

connector (11, fig. 1-2).

handle (2, fig. 1-3) and unscrew reservoir assembly (12).

(2) Release four catches (12) and remove detector

(15) Discard contents of reservoir assembly (12)

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

and screw empty reservoir assembly into mounting

CAUTION

hole in chassis (4).

Keep weight assembly free from dirt after

(16) Install detector unit assembly (6, fig. 1-2) in

removing reservoir assembly.

bottom case assembly (9) and secure it with four

(3) Hold detector unit assembly upright by its han-

catches (12).

dle (2, fig. 1-3) and unscrew reservoir assembly (12).

(17) Install AIR OUTLET cap (15) in AIR OUT-

Allow the weight assembly (12.1) to hang down. If solu-

LET port.

tion is in reservoir assembly, discard it in accordance

(18) Screw plug (1, fig. 2-5) into AIR INLET assem-

with standing operating procedures.

bly. Check that AIR INLET assembly is set to

CAUTION

CLOSED.

Use only distilled water (4 or 5, table 1-3)

when preparing the detector unit assembly

(19) Install electrical connector cover (10, fig. 1-2)

on 24 VDC INPUT connector (11).

for shipment. Use of water which contains

impurities will cause damage to the detector

(20) Pull up handcrank (19) to storage position.

(21) Using figure 5-1 as a guide, fabricate a ship-

cell.

ping guard from corrugated cardboard. After cutting

(4) Rinse reservoir assembly with distilled water (4

PIECE B from PIECE A, fold PIECE B in half and

or 5, table 1-3) and fill it approximately two-thirds with

slide it over the extended handcrank shaft. Secure

distilled water.

PIECE B in position with PIECE A as shown in figure

(5) Center reservoir assembly under weight assem-

5-1 to protect the meter window and keep the

bly and screw reservoir assembly (12) into mounting

handcrank in the storage position.

hole in chassis (4). Insure a tight seal by turning reser-

voir assembly D-ring clockwise.

(22) Release catch (12, fig. 1-2) on BA3517/U bat-

tery, if applicable, and remove the battery before ship-

(6) Check that seal (1, fig. 1-4) is correctly seated in

groove around top of bottom case assembly (9, fig. 1-2).

ping the M43 detector unit.

Assemble detector unit assembly (6) to bottom case as-

5-2. M42 Alarm Unit

sembly (9) and secure four catches (12).

a General. Before the M42 alarm unit is shipped to

(7) Remove AIR OUTLET CAP (15) from port.

another organization, remove the four batteries.

(8) Remove electrical connector cover (10) from 24

b. Procedure.

VDC INPUT receptacle (11).

(1) Remove the batteries as described in paragraph

(9) Check that AIR INLET assembly is in CLOSED

3-16a.

position (fig. 2-5, A). Unscrew plug (1).

(2) Close hinged cover and secure it with spring-

(10) Attach power source connector to the 24 VDC

tension clip (8).

INPUT connector (11, fig. 1-2). If horn (3, fig. 2-1)

(3) With gasket (10) in place, position chassis as-

sounds, press ZERO ADJUST knob (5) and rotate it

sembly (4) in housing (5).

fully counterclockwise.

(4) Secure by tightening four knurled screws (2).

Change 1

5-1