TM
3-4240-309-20&P
Section II EQUIPMENT DESCRIPTION AND DATA
(2) A door assembly that, when fully extended,
1-7. EQUIPMENT CHARACTERISTICS,
provides access to the protective entrance. The
CAPABILITIES, AND FEATURES.
door frame supports the protective entrance
a. Characteristics.
front.
(1) Collective protection equipment (CPE) allows
(3) Two support assemblies that, when fully
extended, form rigid poles between shell
contaminated zone.
assembly roof and the floor. The support
(2) The filter units provide filtered air under
assemblies are located at the protective
positive pressure to the M10 Protective
entrance rear.
Entrances and to the GUARDRAIL vans.
(4) An impermeable fabric assembly that attaches
(3) Positive pressure prevents dangerous amounts
to the two shell assembly halves. The fabric
forms the protective entrance walls when fully
entering the protected area.
extended.
(4) The M10 Protective Entrances, while under
b. The protective entrance control modules (B)
positive pressure, allow personnel to enter or
mount in the shell assembly roof and provide white
leave without loss of positive pressure
or blackout red light, purge timing, and low pressure
protection in GUARDRAIL van 1 and van 4.
warning for the protective entrances.
b. Capabilities and Features.
c. The housing units (C) contain the main fan, gas
filter, and particulate filter. Inner and outer access
(1) Both the M10 Protective Entrances and the
covers permit filter changing.
GUARDRAIL vans contain control modules.
d. The compartment control modules (D) mount
(2) Major CPE components may be attached or
inside the vans and contain controls and indicators
detached from the GUARDRAIL system
to operate the collective protection equipment. They
without affecting shelter operation.
also serve as the electrical power distribution centers
(3) Modular CPE design permits the following:
for the collective protection equipment.
(a) Easy access to major components for
e. The power distribution units (E) mount on the
servicing and maintenance.
(b) Quick replacement of malfunctioning
They serve as the electrical power distribution centers
components.
for the collective protection equipment.
1-8. LOCATION AND DESCRIPTION OF
the housing unit stands and convert 3 phase, 60 Hz,
MAJOR COMPONENTS.
208 V shelter power to 3 phase. 400 Hz, 208 V
a. The protective entrances (A) consist of the
power for CPE use.
following:
g. The airflow valves and silencers (G) adjust and
(1) A shell assembly, which is in two halves and
silence the flow of filtered air to the protective
forms the roof and floor.
entrances. The valves are controlled by the protective
entrance control modules.
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