TM 3-4240-241-12
coupling clockwise slowly until the key locks in
(2) Turn blower on swivel base so that blower air
the slots without too much force being applied.
outlet (5, fig. 20) aligns with canister air inlet.
Then using the elbow connector assembly (9,
Lock engine stand assembly in place on swivel
fig. 19) and starting both ends of the elbow
base with self locking nuts. Connect blower air
connector assembly over the fittings at the
outlet and canister air inlet with locking
same time, make the connection. Secure the
coupling (4).
engine stand assembly to the swivel base of
Warning. For outside operation, it is
the canister by installing the two washers and
essential that blower does not pull air
locknuts when both
connections
are
through canister. The blower creates a
satisfactory.
vacuum which will cause contaminated air
Warning. For inside installation, it is
to leak into canister and be forced into the
essential that blower does not force air
CBR protective structure.
through canister.
The blower creates
(3) Attach air inlet hose (3) directly to blower air
pressure which will cause contaminated air
inlet (6) and fasten with coupling assembly (7)
to seep from canister into the CBR
and hose clamp (17).
protective structure.
(4) Fasten other end of air inlet hose to a tree,
(4) Cut a hole in the shelter wall the same size as
pole, or to the outside of the building in a
the hose. Remove coupling assembly (5) from
vertical position. (Gas tends to concentrate
air inlet hose (3) and slide hose from outside
near the ground.) Fasten air inlet cover (1) to
through hole into the shelter.
Connect
hose with hose clamp (2).
coupling clockwise until key locks in slot. Slide
(5) Connect elbow coupling assembly (8) to
air inlet hose (3) over mouth of coupling
canister air outlet (12); fasten connector
assembly.
assembly (9) to elbow coupling and turn
(5) When the filter unit is in operation, exhaust
coupling clockwise until key locks in slot. Slide
gases from the engine must be vented to the
air outlet hose (11) over mouth of connector
atmosphere.
Install exhaust tube gasket
assembly and fasten with hose clamp (10).
between engine exhaust flange and exhaust
(6) Extend other end of air outlet hose through vent
tube connector and assemble exhaust hose
opening in w 1-l of building. Install air outlet
with attaching hardware.
Screw exhaust
screen on end of hose.
assembly (4, fig. 7) to exhaust tube connector
(7) When the filter unit is in operation, exhaust
(3). Place other end of hose through vent
gases from the engine must be vented to the
opening in outer wall of CBR protective shelter.
atmosphere. Install exhaust hose assembly,
paragraph 53b(5). Place other end of hose
Warning. Do not place exhaust tubing and
through vent opening in outer wall of CBR
air inlet hose in the same vent opening,
protective shelter.
since exhaust gases containing carbon
Warning. Do not place exhaust tubing and air
monoxide may be drawn into air inlet hose.
inlet hose in the same vent opening, since exhaust
(6) Make certain air duct hose (12 and 21, fig. 19)
gases containing carbon monoxide may be drawn
are fastened securely by hose clamps (11, 13,
into air inlet hose.
20, and 22) so that connections are airtight.
(7) Fasten air outlet hose into blower air outlet (8).
54. Servicing
c. Outside Installation.
Reference Lubrication Order LO 5-280-206-14 (TM
(1) For outside installation, first follow instructions
5-2805-206-14) for proper servicing in preparation to
given in paragraphs 50 through 52.
operate the filter unit. Reference paragraph 9 for
operation instructions.
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