Section II. EQUIPMENT DESCRIPTION AND DATA
and the floor of the shell assembly. The sup-
port assemblies are located at the rear of the
CAPABILITIES, AND FEATURES.
An impermeable fabric assembly is attached
The CPE is designed to operate in a
to the two halves of the shell assembly.
When the fabric is fully extended, it forms
the walls of the protective entrance.
The filter unit provides filtered air under
PROTECTIVE ENTRANCE CONTROL
positive pressure to the M 12 Protective En-
MODULE. Mounted in the roof of the shell
assembly, provides white/or black-out red light,
trance and to the AN/TSQ-73 shelter.
purge timing and low pressure warning for the
Positive pressure prevents dangerous
agents from entering the protected area.
GAS-PARTICULATE FILTER UNIT.
The filter unit housing contains the main fan,
The M12 Protective Entrance, while under
the gas filter, and the particulate filter.
positive pressure, allows personnel to enter
Inner and outer access covers permit
or leave without loss of positive pressure
changing the filters.
protection in the AN/TSQ-73 shelter.
The airflow valve, attached to the outside of
the filter unit housing, controls the airflow
Capabilities and Features
between the filter unit, the shelter, and the
Control modules are provided for both the
M12 Protective Entrance and the AN/
COMPARTMENT CONTROL MODULE.
Mounts inside the shelter and contains con-
Major components of the collective protec-
trols and indicators to operate the collective
tion equipment (CPE) may be attached or
detached from the AN/TSQ-73 shelter with-
POWER DISTRIBUTION UNIT. Mounts
out affecting the operation of the shelter.
on the outside of the shelter below the filter
Modular design of CPE permits:
unit. It serves as the electrical power dis-
a. Easy access to the major components for
tribution center for the collective protection
servicing and maintenance.
b. Quick replacement of malfunctioning
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
AIRFLOW VALVE AND SILENCER.
PROTECTIVE ENTRANCE. Consists
Adjusts and silences the flow of filtered air to
the protective entrance. The valve is con-
trolled by the protective entrance control
Shell assembly, which is in two halves, forms
the roof and floor.
Door assembly, when fully extended, pro-
SPECIAL 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.
unit, 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