3.4.3 Connecting the Front Access Housings: The individual
housings shall be riveted together using the holes provided, as
shown in Figure 2. Four (4) rivet holes are provided on each side of
the housing and on the top and bottom. When connecting to
adjacent housings all rivet holes must be used.
Provision of the rivets will be the responsibility of the installer or
others. This item will not be supplied by AAF unless noted
specifically in the AAF quotation and in the accepted customer
purchase order.
It is recommended that stainless steel rivets be used. Check the
first frame installations to ensure that the installed rivets do not
interfere with the installation of the chemical filter cassettes.
Blind Rivets
5
3 2
"
Dia. Stainless Steel
0.063" — 0.125"
Grip (Rivets
Supplied by Others)
Typical Rivet Detail
1
8
" Maximum
1
8
" Maximum
Figure 2
3.4.4 Sealing the Perimeter of the Filter Bank: The perimeter of
the filter bank shall be sealed to prevent the by-pass of air around the
filter bank. Suggestions for accomplishing this are shown in Figure 3.
Provision of the ductwork and/or sheet metal panels will be the
responsibility of the installer or others. This item will not be supplied
by AAF unless noted specifically in the AAF quotation and in the
accepted customer purchase order.
Pay particular attention to caulking around the perimeter to achieve
a complete seal. Detailed caulking instructions are provided in
paragraph 3.4.2.
Use Sheet
Metal Panels
to Seal Top
and Sides
of Frame
Bank as
Necessary
Suggested Ductwork Connection Detail
Figure 3
Caulk Seal Typ.
(caulk Supplied by Others)
Hardware Supplied
by Others
3.5 Preparation for Filter Installation: At this time a filter bank
similar to that shown (lower left) will have been erected.
In order to maximize the life of the gas phase chemical filters and the
particulate filters, it is recommended that filter installation be the final
installation task before start-up and commissioning of the system. In
preparation for filter installation, it is recommended that the following
be completed:
— Completely clean the system to remove all construction debris
and dirt, sweep and vacuum to remove visible dirt.
— Damp wipe all surfaces to remove dust.
— Finalize and complete all caulking.
— Finalize and complete all painting.
It is recommended that all cleaning materials and paints used in the
system be free of solvents. If this is unavoidable, it is recommended
that sufficient time be allowed for complete drying to occur and for the
VOCs to disperse before installing the filters. This process can be
accelerated by blowing down the system; i.e., operating the fan
without the filters to ventilate the system. It is recommended that a
blanket style construction filter be installed at the inlet to the system to
prevent construction dust from being drawn into the system. Consult
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