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Page Title:
Section II. EQUIPMENT DESCRIPTION AND DATA |
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 TM 3-4240-284-20&P
Section II. EQUIPMENT DESCRIPTION AND DATA
and the floor of the shell assembly. The sup-
1-7.
EQUIPMENT CHARACTERISTICS,
port assemblies are located at the rear of the
CAPABILITIES, AND FEATURES.
protective entrance.
Characteristics
An impermeable fabric assembly is attached
to the two halves of the shell assembly.
The CPE is designed to operate in a
When the fabric is fully extended, it forms
chemicdbiological agent contaminated zone.
the walls of the protective entrance.
The filter unit provides filtered air under
P R O T E C T I V E ENTRANCE CONTROL
positive pressure to the M10 Protective
MODULE. Mounted in the roof of the shell
Entrance and to the TACFIRE shelter.
assembly, provides white/or black-out red light,
Positive pressure prevents dangerous
purge timing and low pressure warning for the
amounts of chemical and biological (CB)
protective entrance.
agents from entering the protected area.
GAS-PARTICULATE FILTER UNIT.
The M10 Rotective Entrance, while under
The filter unit housing contains the main fan,
positrive pressure, allows personnel to enter
the gas filter, and the particulate filter.
or leave without loss of positive pressure pro-
Inner and outer access covers permit
tection in the TACFIRE shelter.
changing the filters.
The airflow valve, attached to the outside of
capabilities and' Features
the filter unit housing, controls the airflow
between the filter unit, the shelter, and the
Control modules are provided for both the
protective entrance.
M10 Protective Entrance and the TACFIRE
shelter.
COMPARTMENT CONTROL MODULE.
Major components of the collective protection
Mounts inside the shelter and contains con-
equipment (CPE) may be attached or
trols and indicators to operate the collective
detached from the TACFIRE shelter with-
protection equipment.
out affecting the operation of the shelter.
POWER DISTRIBUTION UNIT. Mounts
Modular design of CPE permits:
on the outside of the shelter below the filter
a. Easy access to the major components for
unit. It serves as the electrical power dis-
servicing and maintenance.
tribution center for the collective protection
equipment.
b. Quick replacement of malfunctioning
components.
AIRDUCT HOSE. Large diameter (6")
impermeable fabric hose, in 6 foot sections,
connects filter unit, shelter, and protective
entrance for filtered and return air
LOCATION AND DESCRIPTION OF MAJOR
1-8.
circulation.
COMPONENTS.
AIRFLOW VALVE AND SILENCER.
P R O T E C T I V E ENTRANCE. Consists
Adjusts and silences the flow of filtered air to
Of:
the protective entrance. The valve is con-
trolled by the protective entrance control
Shell assembly, which is in two halves, forms
module.
the roof and floor.
Door assembly, when fully extended, pro-
S P E C I A L PURPOSE ELECTRICAL
vides for entering and leaving the protective
CABLES. Six cables route electrical power and
entrance. The door frame supports the front
electrical operating signals between the filter
of the protective entrance.
--
u n i t , power distribution unit, compartment con-
trol module, protective entrance, and valve and
Two support assemblies, when fully ex-
silencer assembly. (Not all cables are shown. )
tended, form rigid poles between the roof
1-2
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