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SAAF Front Access Housings 

with  SAAF  Cassette  Gas  Phase  Chemical  Filters

Installation, Operation and Maintenance Instructions

Better Air is Our Business

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1.0 Introduction

1.1 About this Document
This document contains the information necessary to properly receive,
assemble, install, operate, and maintain the AAF Front Access
Housing (FAH) filter bank and filters. The purchaser, installer, and
operator of the filter system MUST read and comply with this
document in its entirety prior to installation of the equipment and its
operation. Failure to comply with the requirements of this manual may
void the product warranty.

CAUTION
These instructions are specific to the AAF Front Access Housing
(FAH) filter bank and filters. All ancillary tasks including, but not
limited to, electrical and mechanical work, equipment handling, and
safety procedures must be performed in accordance with industry
accepted practice and all relevant local, state, and federal
government codes, laws, and policies.

Table of Contents

1.0 Introduction

1.1 About this document
1.2 Packaging and shipping, receiving and inspection,   

handling, and storage

1.3 Product descriptions
1.4 Product model designations
1.5 Product drawings
1.6 Assembly — general comments
1.7 Related system equipment

2.0 Principles of Operation

3.0 Installation Instructions

3.1 Space requirements
3.2 Foundations and anchoring
3.3 Typical Front Access Housing (FAH) details
3.4 General filter bank erection procedure
3.5 Preparation for filter installation
3.6 Gas phase chemical filter installation
3.7 Prefilter installation
3.8 Pressure gauge
3.9 After-filters

4.0 Start-up Instructions

5.0 Maintenance

5.1 Prefilter
5.2 After-filter
5.3 Gas phase filter monitoring

5.4 Removal and replacement of particulate and gas phase

chemical filters

5.5 Disposal of used filters
5.6 Gaskets
5.7 General system maintenance

6.0 Troubleshooting

6.1 High pressure drop reading across the filter system
6.2 Visible discharge of particulate
6.3 Odors and smells

7.0 Spare Parts List

8.0 Equipment Characteristics, Operating Weights, and 

Shipping Weights

Summary of Contents for FAH-202-2P-MD

Page 1: ...federal government codes laws and policies Table of Contents 1 0 Introduction 1 1 About this document 1 2 Packaging and shipping receiving and inspection handling and storage 1 3 Product descriptions...

Page 2: ...shall be handled with great care The components shall be retained and stored in their protective packaging until immediately prior to installation Care shall be taken to ensure that the packages are n...

Page 3: ...ps in two halves 24 high x 12 wide x 12 deep Type CG cassette ships in one piece The three 3 types of gas phase chemical filter cassettes that can be supplied are as follows 1 3 3 Particulate filters...

Page 4: ...ng individual components with a maximum weight of approximately 55 pounds 25 kg riveting or screwing components together and caulking Completion of the following preparations and provision of the foll...

Page 5: ...a in a V bank configuration of media beds that maximizes the media exposed to the air stream reduces the air stream velocity through the media bed maximizes energy efficiency and maximizes the removal...

Page 6: ...2P HD FAH 202 2P CG Cassette support angle Pre filter latch in closed position Cassette sealing and locking channel Filter sealing locking handle Filter face sealing gasket Locking handle support tab...

Page 7: ...gures 1 and 3 Locate the lines of caulk as shown and as follows Two 2 unbroken transverse lines between horizontal and vertical rows across the entire width of the filter bank at each level beginning...

Page 8: ...ulking 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...

Page 9: ...d plastic bag You may notice that each cassette or half cassette is accompanied by a plastic bag containing loose gaskets see right These are supplied for use when the cassette is being installed into...

Page 10: ...panels of the FAH as shown in the illustration below Adjacent housings will share a set of tabs Note that the locking handle support tabs are shipped installed on MD and most HD housings 3 6 7 Sealin...

Page 11: ...tes upwards Step 5 Making sure that the locking handle is hooked behind the front flange of the locking handle support tab and cannot slip off rotate the locking handle downwards so that the face of t...

Page 12: ...refilters as shown in the sequence at right Each individual FAH can accommodate one prefilter A standard 24 x 24 ASHRAE style filter will fit into the size 202 housing and a standard 24 x 12 ASHRAE st...

Page 13: ...ilter with appropriate support frames have not been included in the customer s purchase order discuss the additional filter options with your AAF representative If any of these items have been include...

Page 14: ...seal between the gas phase chemical filter cassette and the FAH on the air leaving face of the housings whenever new SAAF Cassettes are installed 5 7 General System Maintenance Ducts filter support fr...

Page 15: ...2 Check for missing or damaged filters and system leaks Replace filters and re seal as necessary 7 0 Spare Parts List It is recommended that the following spare parts be stored at the installation si...

Page 16: ...tions without notice 10300 Ormsby Park Place Suite 600 Louisville Kentucky 40223 6169 www aafintl com Customer Service 800 477 1214 Fax 800 254 3019 ISO Certified 9001 2000 2006 AAF International GPF...

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