Brochure
NBC COMPOSITE FILTER,
No.1 MK’s 2 & 4
Ebac Industrial
Products Limited
E97/E97-F AIR CONDITIONER & NBC FILTRATION EQUIPMENT
The filter comprises of two concentric elements;
an Ultra High Efficiency (UHE) particulate
element; and a charcoal anti-vapour filter, both
contained within a cylindrical housing. Although
the airflow is radial through the beds, the inlet
and outlet are axial.
When used in a positive pressure plennum
(ie. surrounded by air that has already been
cleaned) all seals made during installation
become fail-safe. All filters are tested during
manufacture for particulate abd gas penetration,
thus in effect testing the integrity of sealing inside
the filter as well as the filter elements.
Current production version is the Mk2
(FV2171110, NSN 4240-99-830-5026). A Mk4
version (FV2148120, NSN 4740-99-839-9842) is
to be introduced shortly.
The Mk4 differs from the Mk2 in that it is made
using an improved filling technique, has a more
stringent vapour penetration test during
manufacture and is supplied packaged for 10
years storage. In practice Mk2’s manufactured
are now made to Mk4 standards, except that
they are built for relatively immediate use, they
do not use the 10 year packaging system.
The E97-F design incorporates air conditioning, NBC filtration unit, differential pressure sensor and over pressure relief
flap in a fully integrated self contained package. The components (ACU & NBC) are designed to either mounted together
NBC filter, slung under the Air Conditioner, or mounted side by side on the external wall of the shelter.
Particular attention has been paid to ease of installation and maintenance. All components are readily accessible with the
unit in-situ by the simple removal of servicing panels.
To satisfy the demands of modern radar and computer controlled system, special consideration has been given to EMC
and RFI suppression.
When RFI seals and honeycomb filters are used with the electrically bonded case, a high level of attenuation over a wide
frequency spectrum is achieved. Capacity control is standard feature to eliminate the power surges associated with
compressor starting.
Temperature control is selected through a programmable temperature controller. Once selected the operation of the unit
if fully automatic with cooling available in ambient conditions from -46ºC to +55ºC. Performance and fault monitoring,
self test and remote alarm signals are provided on the unit control panel via illuminated push buttons and indicators.
When NBC filtered air is required, the unit will automatically seal off the fresh air intake, divert the fresh air through the
NBC composite and then conditioned before being mixed with the air circulating within the conditioned space.
Assuming the installation is well sealed, the E97-F will create a safe working over pressure before the internal pressure
flap operates to exhaust stale air from the conditioned space.
18991 E97-F data sheet 7/9/05 2:48 pm Page 1