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optional Enclosure protection Vent
All configurations must be mounted in a true vertical
position.
The vent must be located to provide access for routine testing
of the vent's flapper assembly. A minimum 8" clearance is
required below the vent opening.
1. Determine the vent's mounting configuration, i.e.;
-00 vertical mount or -90 side mount. (see photos
below)
2. Determine vent location and layout vent mounting hole
on the protected enclosure. (as determined on page 7,
"Getting Started")
3. Using a 0.875" hole saw or 1/2" conduit punch, drill and
deburr the enclosure protection vent mounting hole.
4. Remove the hub mounting nut from the vent hub and
place the hub, with O-ring intact, through the mounting
hole. The O-ring must be on the outside of the protected
enclosure.
EpV - 1 - sa - 00
top Mount
12
12
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http://www.RSPSupply.com/p-6798-Hoffman-A1001YZUMC2-Purging-Pressurization-System-10-CF.aspx
Hardware Mounting
EpV - 1 - sa - 90
side Mount
Warning nameplate(s)
An EWN (Enclosure Warning Nameplate) must be located
in a prominent position on or near all enclosure accesses
(doors and covers).
One (1) EWN is provided with each system, located in the
manila envelope taped to the mounting flange of the system.
Additional EWN's are available from Pepperl+Fuchs.
All EWNs provide labeled spaces allowing the customer to
mark the protected enclosure with: 1) a T Code (temperature
identification number), 2) Class, Group and Division of
surrounding area, and 3) NFPA pressurization Type X, y or z,
as may be required by plant and local codes and is required
by NFPA 496.
An ETW (Enclosure Temperature Warning nameplate) must
be located in a prominent position on or near all enclosure
accesses (doors and covers) when the temperature of an
internal component exceeds 80 percent of the ignition
temperature of the flammable vapor, gas or dust involved.
The ETW warns the operator to deenergize all equipment for
a specified length of time, allowing the protected equipment
to cool before opening the protected enclosure. The length
of time required is determined by the customer and can be
factory or field engraved.
All EWNs and ETWs are furnished with an adhesive back,
but should also be riveted or screwed to the protected
Enclosure Warning nameplate - Class I
Enclosure Warning nameplate - Class II
Enclosure temperature Warning nameplate
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