Used Materiel

TM 3-4240-201--13

Figure 4-2. Filter unit, partially unpacked.

(4) Plug the pulomatic plugs on the size 3

(12) Check that battery is charged, using a

hose assemblies into two sockets of the manifold

hydrometer. Specific gravity should be between 1, 275

assembly.

and 1, 290. Check level of electrolyte in battery cells.

(5) Place the solid airflow control cap (fig. 2-1)

Add distilled water as required.

over the socket on the fourth air outlet of the manifold

(13) Connect battery charger (trickle charger)

assembly.

to batteries. Connect 115 volt ac power cable to 115 volt

(6) Locate the air purifier so that the hoses

ac power source. (The battery charger (commercially

can reach the beds of the six patients (fig. 2-1).

referred to as trickle charger) must be purchased locally.

(7) Install loop clamps to support the hose

The trickle charger is connected to the battery during the

assemblies as required.

time that the battery is not being used to power the filter

(8) Use wood screws and/or machine screws

unit.)

and nuts to fasten the clamps.

(9) Connect the inlet adapter ends of the hose

4-2.

Used Materiel

assemblies to the headpieces on the six beds.

(10) Connect the electrical plug connector end

Unpack the used filter unit in the same manner as a new

of the air purifier power cable to the air purifier electric

Examine the used filter unit for

receptacle connector.

excessive signs of wear, damage, dry rot, or missing

(11) Connect the 24 volt dc power cable to a 24

parts. Install a new gas filter and particulate filter (para

volt dc battery or two 12 volt dc batteries connected in

4-7), if logbook entries show that one or more conditions

series (battery is not supplied with the filter unit). (When

in table 2-1 are met. Correct deficiencies, if authorized,

two 12 volt dc batteries are used, use a lead storage

or notify direct support maintenance.

battery jumper (FSN 6140-843-5245) to connect them

together.)

4-2