Gentek 3980321, 3980323, 3980403, 3980302, 3980220, 3980201, 3980421, 3980303, 3980202, 3980322, 3980222, 3980400, 3980420, 3980223, 3980300, 3980402, 3980401, 3980301, 3980221, 3980320, 3980423, 3980422, 3980200, 3980203 User Manual

Loading...

User’s Manual

Purifier® HEPA Filtered Enclosures

& Purifier® Class I Filtered

Enclosures

Models

3980200, 3980201, 3980202, 3980203, 3980220, 3980221, 3980222, 3980223, 3980300, 3980301, 3980302, 3980303, 3980320, 3980321, 3980322, 3980323, 3980400, 3980401, 3980402, 3980403, 3980420, 3980421, 3980422, 3980423

Register your product online at www.labconco.com/productreg.html or return the attached card and receive FREE LabbyWear!

Labconco’s Mascot,

Labby the LABster

Labconco HEPA Filtered Enclosure Manual

Warranty

Labconco provides a warranty on all parts and factory workmanship. The warranty includes areas of defective material and workmanship, provided such defect results from normal and proper use of the equipment.

The warranty for all Labconco products will expire one year from date of installation or two years from date of shipment from Labconco, whichever is sooner, except the following:

Purifier® Delta® Series Biological Safety Cabinets and PuriCare® Animal Laboratory Research Enclosures carry a three-year warranty from date of installation or four years from date of shipment from Labconco, whichever is sooner.

Carts carry a lifetime warranty.

Glassware is not warranted from breakage when dropped or mishandled.

This limited warranty covers parts and labor, but not transportation and insurance charges. In the event of a warranty claim, contact Labconco Corporation or the dealer who sold you the product. If the cause is determined to be a manufacturing fault, the dealer or Labconco Corporation will repair or replace all defective parts to restore the unit to operation. Under no circumstances shall Labconco Corporation be liable for indirect, consequential, or special damages of any kind. This statement may be altered by a specific published amendment. No individual has authorization to alter the provisions of this warranty policy or its amendments. Lamps and filters are not covered by this warranty. Damage due to corrosion or accidental breakage is also not covered.

Limitation of Liability

The disposal and/or emission of substances used in connection with this equipment may be governed by various federal, state, or local regulations. All users of this equipment are required to become familiar with any regulations that apply in the user’s area concerning the dumping of waste materials in or upon water, land, or air and to comply with such regulations. Labconco Corporation is held harmless with respect to user’s compliance with such regulations.

.

Part #3905500, Rev. A

ECO C415

ABLE

F

ONTENTS

 

T

O C

 

CHAPTER 1: INTRODUCTION

1

About This Manual

 

2

Typographical Conventions

 

3

CHAPTER 2: PREREQUISITES

5

Support, Vibration & Movement Requirements

6

Location and Air Current Requirements

6

Exhaust & Blower Requirements

6

Electrical Requirements

 

7

Space Requirements

 

7

CHAPTER 3: GETTING STARTED

9

Unpacking Your Enclosure

 

10

Installing the Filtered Enclosure on a Supporting

 

Structure and Work Surface

10

Connecting to the Exhaust System (Optional)

13

Installation of HEPA Filters and Accessory Odor-

 

Control Carbon Filters

 

15

Connect the Electrical Supply Source to Filtered Enclosure

16

Set the Face Velocity with Speed Control Adjustment

17

Validating the Vented Enclosure

17

Sealing the Filtered Enclosure to the Work Surface

18

CHAPTER 4: HIGH PERFORMANCE FEATURES AND

 

SAFETY PRECAUTIONS

19

Components

 

 

20

Safety Precautions

 

27

CHAPTER 5: APPROPRIATE APPLICATIONS FOR YOUR

 

FILTERED ENCLOSURE

31

Routine Daily Work Procedures

31

Suitable Applications

 

33

HEPA Filter Applications, Suitability & Guidelines

33

Odor Control Carbon Filter Applications

34

Definition of Terms

 

35

Appropriate Chemicals for Odor Control Carbon Filters

36

Hazardous Misapplications for Odor Control Carbon

 

Filters with Volatile Chemicals

37

Chemical Carcinogen Use with Odor Control

 

Carbon Filters

 

37

Prohibited Acid Use

38

CHAPTER 6 MAINTAINING YOUR FILTERED ENCLOSURE 39

Routine Maintenance Schedule

40

Decontamination

41

Determination of when to Replace HEPA Filters

41

How to Install a New HEPA Filter

42

HEPA Filter Leak Test

44

Setting the Inflow Face Velocity with the Speed Control

 

Adjustment

46

Calibrate and Operate the Airflow Monitor

46

Determination of When to Replace Odor control

 

Carbon Filters and How to Replace

50

Calculating Odor control Carbon Filter Life

52

Initial Certification

53

Re-Certification

53

Fluorescent Light Replacement

54

UV Light Replacement

54

Motorized Impeller Replacement

54

Speed Control Replacement

56

CHAPTER 7 ACCESSORIZING & MODIFYING YOUR

 

FILTERED ENCLOSURE

57

CHAPTER 8 TROUBLESHOOTING & SERVICER

 

OPERATING LOG

63

APPENDIX A: FILTERED ENCLOSURE COMPONENTS

 

AND REPLACEMENT PARTS

67

APPENDIX B: DIMENSIONS AND EXHAUST OPTIONS

72

APPENDIX C: FILTERED ENCLOSURE SPECIFICATIONS

75

APPENDIX D: QUICK CHART FOR THE FILTERED

 

ENCLOSURES

81

APPENDIX E: REFERENCES ON VENTILAITON, SAFETY,

 

OCCUPATIONAL HAZARDS, BIOSAFETY

 

AND DECONTAMINATION

82

DECLARATION OF CONFORMITY

87

CHAPTER 1

INTRODUCTION

Congratulations on your purchase of a Labconco Purifier® HEPA Filtered Enclosure or Purifier® Class I Filtered Enclosure. Your enclosure provides personnel protection through superior containment. It is the result of Labconco’s more than 50 years experience in manufacturing fume hoods and more than 30 years experience in manufacturing filtered enclosures.

These enclosures will effectively contain toxic, noxious, or biohazardous particulates when properly installed and operated. Each enclosure uses a single HEPA filter, which is rated at least 99.99% efficient for 0.3-micron particles. Additionally, an accessory Odor Control carbon filter may be added to adsorb nuisance odors from organic vapors, formaldehyde or ammonia and amines. The Purifier enclosures offer many unique features to enhance safety, performance, and energy savings. To take full advantage of them, please acquaint yourself with this manual and keep it handy for future reference. If you are unfamiliar with how high performance HEPA filtered enclosures operate, please review

Chapter 4: High Performance Features and Safety Precautions before you begin working in the enclosure. Even if you are an experienced user, please review Chapter 5: Using Your HEPA Filtered Enclosure, which describes the Purifier features so that you can use the filtered enclosure efficiently. For hazardous biological applications requiring user protection but not product protection, Labconco recommends the purchase of a Class I enclosure, which includes a UV light for general surface decontamination. For general hazardous biological applications,

1

Chapter 1: Introduction

particulates, and nuisance powders, Labconco recommends the use of the Purifier HEPA Filtered Enclosure. See chart below and contact Labconco for additional ordering information.

No.

Application

Product

Filters

Bag-in/Bag-out

UV

HEPA

Light

 

 

 

 

1.

Nuisance Powders,

Purifier HEPA

HEPA

NO

 

 

Biohazardous

Filtered

 

Decontamination

NO

 

Materials

Enclosure

 

Required

 

2.

Nuisance Powders,

Purifier HEPA

HEPA

NO

 

 

Biohazardous &

Filtered

and

Decontamination

NO

 

Volatile Chemicals

Enclosure

Carbon*

Required

 

3.

Biohazardous

Purifier Class I

HEPA

NO

Included for

 

Materials & Nuisance

Enclosure

 

Decontamination

Surface

 

Powders

 

 

Required

Decontamination

4.

Biohazardous

Purifier Class I

HEPA

NO

Included for

 

Materials, Nuisance

Enclosure

and

Decontamination

 

Surface

 

Powders & Volatile

 

Carbon*

Required

 

 

Decontamination

 

Chemicals

 

 

 

 

 

 

 

 

* It is recommended that a Labconco product specialist review the chemical application to determine if it is suitable. Consult Chapter 5 and Chapter 6.

About This Manual

This manual is designed to help you learn how to install, use, and maintain your filtered enclosure. Instructions for installing optional equipment or accessory carbon filters on your filtered enclosure are also included.

Chapter 1: Introduction provides a brief overview of the filtered enclosure, explains the organization of the manual, and defines the typographical conventions used in the manual.

Chapter 2: Prerequisites explains what you need to do to prepare your site before you install the filtered enclosure. Electrical and service requirements are discussed.

Chapter 3: Getting Started contains the information you need to properly unpack, inspect, install, and certify the filtered enclosure.

Chapter 4: High Performance Features and Safety Precautions explains how the Purifier filtered enclosure operates and the appropriate precautions you should take when using it.

2

Chapter 1: Introduction

Chapter 5: Using Your Filtered Enclosure discusses the basic operation of how to prepare, use and shut down your filtered enclosure.

Chapter 6: Maintaining Your Filtered Enclosure explains how to perform routine maintenance on the filtered enclosure.

Chapter 7: Accessorizing Your Filtered Enclosure explains acceptable modifications to the filtered enclosure or how to add accessories.

Chapter 8: Troubleshooting contains a table of problems you may encounter while using the filtered enclosure including the probable causes of the problems and suggested corrective actions.

Appendix A: Components and Replacement Parts contains labeled diagrams of all of the components of the filtered enclosures.

Appendix B: Dimensions and Exhaust Options contains comprehensive diagrams showing all of the dimensions for the filtered enclosures.

Appendix C: Filtered Enclosure Specifications contains the electrical requirements for filtered enclosures. Wiring diagrams are also included.

Appendix D: Quick Chart provides a table of airflow and test data for the filtered enclosures.

Appendix E: References lists the various resources available that address laboratory ventilation and biosafety.

Typographical Conventions

Recognizing the following typographical conventions will help you understand and use this manual:

• Book, chapter, and section titles are shown in italic type (e.g.,

Chapter 3: Getting Started).

• Steps required to perform a task are presented in a numbered format.

Comments located in the margins provide suggestions,

 

reminders, and references.

 

Critical information is presented in boldface type in paragraphs

 

!

 

that are preceded by the exclamation icon. Failure to comply

 

 

 

 

 

 

 

 

 

 

 

 

3

Chapter 1: Introduction

with the information following an exclamation icon may result in injury to the user or permanent damage to the enclosure.

Critical information is presented in boldface type in paragraphs that are preceded by the wrench icon. A trained certifier or contractor should only perform these operations. Failure to comply with the information following a wrench icon may result in injury to the user or permanent damage to your hood.

• Important information is presented in capitalized type in paragraphs that are preceded by the pointer icon. It is imperative that the information contained in these paragraphs be thoroughly read and understood by the user.

 

 

 

 

 

 

 

 

• A number icon precedes information that is specific to a

 

2'

 

 

3'

 

 

4'

 

 

 

 

 

particular model of enclosure. The 2' icon indicates the text is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

specific to the 2-foot wide model. The 3' icon indicates the text

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is specific to the 3-foot model, etc.

4

CHAPTER 2

PREREQUISITES

Before you install the filtered enclosure, you need to prepare your site for installation. You must be certain that the area is level and of solid construction. In addition, a dedicated source of electrical power should be located near the installation site to power the filtered enclosure, and other apparatus. Additionally, the enclosure should be strategically placed in the lab to provide efficient workflow.

Carefully read this chapter to learn the requirements for your installation site:

The support, vibration and movement requirements.

The location and air current requirements.

The exhaust and blower requirements.

The electrical power requirements.

The space requirements.

Refer to Appendix B: Purifier Dimensions for complete enclosure dimensions.

Refer to Appendix C: Purifier Specifications for complete filtered enclosure electrical and environmental conditions, specifications and requirements.

5

Chapter 2: Prerequisites

Support, Vibration and Movement Requirements

At a minimum, the supporting structure usually consists of a base cabinet and chemically-resistant work surface.

A stand or mobile bench is not recommended if the enclosure will be used for precise weighing of powders.

Location and Air Current Requirements

The Purifier Filtered Enclosures have been designed to contain hazards by negating typical cross drafts and turbulence within the opening. However, as a precautionary safety measure and a higher level of quality management, it is recommended that the enclosure be placed in an area to avoid:

High traffic areas where walking might cause an air disturbance or be a nuisance.

Overhead or wall HVAC diffusers, fans, radiators or other lab equipment producing air currents.

Next to doorways or windows that may be opened.

Exhaust and Blower Requirements

The Purifier Class I Enclosure and Purifier Filtered Enclosure use an integral motorized impeller to draw room air past the operator and through the enclosure. This contaminated air is then pushed through the HEPA filter. The HEPA-filtered exhaust air is then forced out the top of the enclosure. An optional carbon filter may be installed on the downstream side of the HEPA filter to protect against nuisance odors.

The HEPA-filtered exhaust air can be recirculated into the laboratory or exhausted outside with the addition of the exhaust connection kit and remote blower listed in Chapter 7. Data for the exhaust volume and enclosure static pressure loss are listed for each filtered enclosure model at face velocities of 60, 75, 80, 90, 100, and 105 fpm.

6

Chapter 2: Prerequisites

 

 

 

 

 

Max.

 

 

 

 

 

 

Equivalent

Max.

 

 

Face

Exhaust

Noise

Resistance

External

Enclosure

 

Velocity

Volume

Pressure

of 6" Duct

Static

Width

Model Description

(fpm)

(CFM)

db(A)

(Ft)

Pressure

2'

2' Purifier Class I Enclosure

60

85

48-53

400

.20"

 

2' Purifier HEPA Filtered

75

110

49-55

220

.19"

 

Enclosure

80

115

50-56

200

.18"

 

 

90

130

51-57

140

.16"

 

 

100

145

53-58

80

.13"

 

 

105

155

54-59

70

.12"

3'

3' Purifier Class I Enclosure

60

130

48-53

130

.15"

 

3' Purifier HEPA Filtered

75

165

52-56

65

.12"

 

Enclosure

80

175

53-57

50

.11"

 

 

90

200

55-58

35

.09"

 

 

100

220

58-61

25

.08"

 

 

105

230

60-64

20

.07"

4'

4' Purifier Class I Enclosure

60

175

49-54

100

.20"

 

4' Purifier HEPA Filtered

75

220

54-58

60

.19"

 

Enclosure

80

235

58-61

50

.18"

 

 

90

265

60-63

35

.16"

 

 

100

295

62-66

25

.13"

 

 

105

310

64-67

20

.12"

Proper blower selection can be determined from these exhaust requirements and the total system static pressure loss. For outside exhaust, the enclosure must be connected to either a dedicated blower or a house exhaust system.

Labconco offers accessory remote blowers listed in Chapter 7.

Contact Labconco for blower sizing assistance.

If the enclosure is connected directly to a house exhaust system, an

adjustable damper (or valve) must be installed to control the ! airflow properly. This is equally important when a house exhaust

system is controlling multiple filtered enclosures. See Chapter 7 for accessory adjustable damper ordering information.

Electrical Requirements

Standard duplex electrical receptacles should be nearby for connecting the filtered enclosure, or other equipment. The enclosures include iris pass-throughs to allow electrical cords through the back of the enclosure without leaving a large hole for contaminants to escape.

Space Requirements

The dimensions for the different models are shown in Appendix B:

Dimensions

7

Chapter 2: Prerequisites

8

CHAPTER 3

GETTING STARTED

Now that the site for your filtered enclosure is properly prepared, you are ready to unpack, inspect, install, and validate your system. Read this chapter to learn how to:

Unpack and move the enclosure.

Set up the enclosure with the proper supporting structure and work surface.

Connect to an exhaust system if applicable.

Installation of HEPA and accessory Odor Control carbon filters.

Connect the electrical supply.

Set the face velocity with the speed control adjustment.

Arrange validation for the enclosure.

Seal the enclosure to the work surface.

Depending upon which model you are installing, you may need common mechanical and electrical installation tools in addition to 5/16", 3/8", 7/16", and 1/2" wrenches, ratchets, sockets, a nut driver set, a flat-blade screwdriver, a Phillips screwdriver, and a carpenter level to complete the instructions in the chapter.

Each enclosure model weighs between 125 to 195

!lbs. each (55 to 85 kg). The shipping container allows for lifting with a mechanical lift truck or floor jack. If you must lift the enclosure manually, follow safe-lifting guidelines. Do not

lift by the front air foil.

9

Chapter 3: Getting Started

The United States Interstate Commerce Commission rules require that claims be filed with the delivery carrier within fifteen (15) days of delivery.

Unpacking the Enclosure

Carefully remove the shrink-wrap or carton on the enclosure and inspect it for damage that may have occurred in transit. If damaged, notify the delivery carrier immediately and retain the entire shipment intact for inspection by the carrier.

DO NOT RETURN GOODS WITHOUT THEPRIOR AUTHORIZATION OF LABCONCO.

UNAUTHORIZED RETURNS WILL NOT BE ACCEPTED.

IF ENCLOSURE WAS DAMAGED IN TRANSIT,YOU MUST FILE A CLAIM DIRECTLY WITH

THE FREIGHT CARRIER. LABCONCO CORPORATION AND ITS DEALERS ARE NOT RESPONSIBLE FOR SHIPPING DAMAGES.

Do not discard the packing material until you have checked all of the components and tested the enclosure.

We recommend that you do not remove the enclosure from its shipping container until it is ready to be placed into its final location. Move the unit by placing a flat, low dolly under the shipping skid, or by using a floor jack.

!Do not move the enclosure by tilting it onto a hand truck.

Installing the Filtered Enclosure on a Supporting Structure and Work Surface

Use caution when lifting or moving the enclosure.

When installing the enclosure onto a chemical-resistant work surface or benchtop, ensure that the structure can safely support the combined weight of the enclosure and any related equipment. The work surface should be at least as wide as the enclosure to properly support it. The front of the enclosure should be aligned within

10

Chapter 3: Getting Started

0.36" of the front of the work surface. Mounting holes are provided in the Labconco accessory work surfaces to secure the enclosure.

Work Surface Specifications

The work surface should be smooth, rigid, and durable, such as a chemical-resistant epoxy resin. The surface should be non-porous and resistant to the biohazards, powders, solvents and chemicals used in conjunction with the Purifier Filtered Enclosure. The work surface should also contain a dished recessed area for containing primary spills.

Work Surface and HEPA Filtered Enclosure Installation

1.Level the base cabinets and the work surface. Work surface should be placed flush with the front of the base cabinet as shown in Figure 3-1.

2.Position the work surface in its intended location and with the front of the work surface towards you. (Rear mounting holes are located close to the rear edge.)

3.Secure the work surface to the base cabinet with a structural adhesive or silicone sealant.

4.Insert the supplied mounting screws in the four holes. Allow a minimum of 1/8" clearance under the head of the screw for positioning the enclosure.

5.Place the enclosure on the work surface and slide the rear flange and front air foil flanges under the mounting screw heads.

6.Tighten the four screws to complete the installation.

11

Chapter 3: Getting Started

Figure 3-1

Filtered Enclosure Installation

12

!

!

Chapter 3: Getting Started

Connecting to the Exhaust System (Optional)

WARNING: The weight of the exhaust ductwork system must be supported independently of the enclosure superstructure or damage may occur.

The exhaust system should be installed by a qualified HVAC contractor.

Exhaust transition kits aid in the removal of chemicals or applications where a higher degree of biohazard and particulate removal is required. See Chapter 7 for ordering exhaust transition kits for the Purifier HEPA Filtered Enclosure or Purifier Class I Enclosure. Review Chapter 2 for exhaust prerequisites and review Chapter 7 for ordering blower exhaust equipment. See Figure 3-2 for exhaust kit options on Purifier filtered enclosures.

Consult Labconco Customer Service should you require help sizing your blower for the exhaust volume and system static pressure loss.

To ensure compatibility, the selected exhaust duct material should match the enclosure, procedures and chemical applications.

13

Chapter 3: Getting Started

Figure 3-2

Exhaust Duct Connection Kit shown installed on

Purifier Models (Optional)

Kit #3924400 (2'), 3924401 (3'), and 3924402 (4')

14

Chapter 3: Getting Started

Installation of HEPA Filters and

 

Accessory Odor Control Carbon

 

Filters

 

 

HEPA Filters

 

HEPA

 

 

HEPA filters are shipped installed with the gasket on the

 

downstream side. The HEPA filters are leak checked at Labconco.

 

A second leak check is recommended before using the enclosure

 

and at least annually thereafter. Consult your Safety Officer and

 

Chapter 6 for the HEPA Filter Leak Test. See Figure 4-2 for

 

HEPA filter location, HEPA filter gasket, and filter clamp bolts.

 

The Purifier enclosures require decontamination of biohazardous

 

materials or are used with nonbiohazardous materials or nuisance

 

powders. All seams upstream of the HEPA filter are jacketed by

 

negative pressure. This intrinsically safe design ensures

 

containment.

 

Carbon Filters (Accessory for Odor Control only)

 

ACCESSORY

 

 

 

 

CARBON

 

 

 

 

 

 

 

 

 

For carbon filter installation, first remove the upper perforated cover, secured by Phillips head screws, on the top of the enclosure. See Figures 4-1 and 4-2 for location of the upper perforated cover. See Chapter 7 for a list of available carbon filters. All carbon filters are simply gravity installed with the gasket side down and down stream on the exhaust side of the HEPA filter. Install the correct carbon filter for the application.

15

Chapter 3: Getting Started

HEPA

Carbon

Carbon

Carbon

Filter Type

Appropriate Use

 

HEPA

HEPA filters are high-efficiency particulate

2'

3707900

air filters having a particulate removable

3'

3707901

efficiency of 99.99% for particles with a

4'

3707902

diameter of 0.3 micron.

Organic Vapor

Adsorbs organic compounds designated by

Activated Carbon

NIOSH guidelines as acceptable for use with

2'

3937200

chemical cartridge-type respirators.

3'

3937300

Concentrations in the enclosure’s work area

4'

3937400

must not exceed the IDLH for the chemical

 

 

and the exhaust from the enclosure must not

 

 

exceed the TWA.

Formaldehyde

Formaldehyde requires the use of an

(Formalin)

impregnated carbon for the treatment of

2'

3937201

formaldehyde. Concentrations in the

3'

3937301

enclosure’s work area must not exceed the

4'

3937401

IDLH for the chemical and the exhaust from

 

 

the enclosure must not exceed the TWA.

Ammonia and

Treats ammonia, low molecular weight

 

Amines

amines and other bases designated by NIOSH

2'

3937202

as acceptable for use with ammonia cartridge

3'

3937302

type respirators. Requires the use of an

4'

3937402

impregnated carbon. Concentrations in the

 

 

enclosure’s work area must not exceed the

 

 

IDLH for the chemical and the exhaust from

 

 

the enclosure must not exceed the TWA.

Important: Carbon filters do not provide any particulate protection, but provide odor control.

Connecting the Electrical Supply Source to the Filtered Enclosure

115V Models

Simply connect the 115V power cord supplied to the IEC electrical supply plug on the back of the enclosure. If using at 50 Hz operations, blower performance maximum airflow will be reduced by 17%.

230V Models

The above procedure applies for the 230V except it is shipped without a plug. Install the appropriate plug for your electrical specifications per local codes.

16

Chapter 3: Getting Started

Set the Face Velocity with the Speed Control Adjustment

Adjustment of the speed control gives the correct face velocity and is located behind the front panel. The face velocity should be from 75 to 105 fpm for biohazardous operations. (Consult your Safety Officer for airflow recommendations for your application). Containment is maximized at a setting within this range. Working at the lowest face velocity appropriate for the application will give the quietest operation. Face velocity measurements are made using an anemometer. An electric anemometer can be obtained from your laboratory supply dealer. Face velocity measurements should be taken in accordance with the Industrial Ventilation Manual. Using a small Phillips screwdriver, adjust the speed control to give the required face velocity. See Figures 6-1 and 6-2 in Chapter 6 to locate the speed control. The face velocity is increased by turning the speed control counter clockwise and clockwise to decrease face velocity.

Validating the Vented Enclosure

To determine the actual face velocity at the sash opening, airflow velocity readings are taken. This should be done across the sash opening of the enclosure in accordance with the Industrial Ventilation Manual. (See Appendix E) The “average face velocity” is achieved by taking readings in two rows across the enclosure with the readings 6" from the ends and evenly spaced every 12"; the first row is 3" down from the upper sash foil and the second row is 3" up from the work surface. A total of four readings will be taken for the 2' enclosure, six readings taken for the 3' enclosure and eight readings taken for the 4' enclosure and then averaged. Refer to Chapter 2 for proper airflow volumes for your particular model.

The Purifier enclosures have been tested at Labconco’s airflow test facility per ASHRAE 110-1995. All enclosures achieve an “as manufactured rating” of less than 0.05 part per million (ppm) at 4 liters per minute (lpm); AM <0.05 (Consult Labconco for individual ratings). For “field use” ASHRAE testing contact Labconco for a certified on-site contractor. Labconco also performed extensive ASHRAE testing to validate the enclosures for gas containment. For copies of these validation reports, contact Labconco Customer Service.

17

Chapter 3: Getting Started

The Purifier Enclosures were also subjected to Biological Containment testing, using a modified Personnel Protection Test, as described in NSF/ANSI Standard Number 49. An aerosol challenge of approximately 5 x 108 spores of Bacillus subtilus var Niger were released in the enclosure and appropriate air sampling equipment established the number of spores that escaped through the sash opening. Each size enclosure was tested three times. All three sizes of the enclosure were tested at 75 FPM inflow and typically 1 or less than one spore escaped from the enclosure during each of the tests.

The Purifier Enclosures were also subjected to an industrial hygiene air-monitoring study to confirm the performance of the enclosure for powders. The Purifier Enclosures demonstrated excellent containment when used by an operator using excellent technique and good containment when used by an operator using marginal technique. While no enclosure can compensate for improper technique, these tests confirm the Purifier Enclosures provide a safe working environment.

NOTE: Face velocity profiles and smoke testing ! should be performed frequently per your

organization’s quality system to ensure safe performance.

Sealing the Filtered Enclosure to the Work Surface

When the filtered enclosure has been set in place, ducted, (if necessary), and wired, it may be sealed at the work surface to prevent spilled materials from collecting under the walls. A bead of silicone sealant is recommended to seal the filtered enclosure to the work surface.

18

CHAPTER 4

HIGH PERFORMANCE

FEATURES AND SAFETY

PRECAUTIONS

High Performance Features:

The patented* Purifier HEPA Filtered Enclosure and Purifier Class I Enclosure are designed to meet the needs of the laboratory scientist, and provide superior containment while operating at velocities between 75-105 feet per minute. The filtered enclosures have been tested to effectively contain toxic, noxious, and biohazardous materials when properly installed and operated. What makes the filtered enclosures so unique is the revolutionary way they direct air into and through the contaminated air chamber. Labconco engineered the filtered enclosures to minimize the effects of turbulence. The containment-enhancing and aerodynamic designs of the upper sash foil, side air foils, lower air foil, upper dilution air supply, and rear perforated baffle all work in concert to produce horizontal airflow patterns that significantly reduce powder, chemical and biological material concentrations through the work area.

*(U.S. Patent No. 6,461,233)

19

Chapter 4: High Performance Features and Safety

These concentrations of materials are predominantly removed on the “first pass” of airflow through the chamber resulting in high performance containment.

The plenum and the HEPA filter are jacketed by negative pressure. Should a leak occur in the filter gasket or the plenum, the contaminated air is recaptured and refiltered.

The Purifier Class I Enclosure and Purifier HEPA Filtered Enclosure have an access port located behind the front panel. For HEPA filter removal in biohazardous applications on Purifier enclosures, the HEPA filter will require decontamination before removal. Users of all equipment are encouraged to routinely check airflow or purchase a model with an airflow monitor.

20

Chapter 4: High Performance Features and Safety

17

26

16

19

15

10

3

8

18

2

4

6

1

5

Not Shown 7, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24, 25, 28 (See

Figure 4-2)

Figure 4-1

21

Chapter 4: High Performance Features and Safety

Figure 4-2

HEPA Filtered Enclosure Airflow Diagram

22

Chapter 4: High Performance Features and Safety

1.Aerodynamic Clean-Sweep™ Air Foil has a unique shape that allows air to sweep the work surface for maximum containment. The Clean-Sweep™ openings create a constant protective barrier from contaminants. Should the operator inadvertently block the airflow entering the air foil, air continues to pass under the air foil and through the Clean-Sweep openings. See Figures 4-1 and 4-3.

Figure 4-3

2.Containment-Enhancing Upper Sash Foil includes an open air passage directly atop the sash foil to bleed air into the hood chamber and direct chemical, powder and particulate materials away from the sash opening. The radiused sash foil sweeps airflow into the hood with minimal turbulence. See Figures 4-1 and 4-4.

Figure 4-4

23

+ 65 hidden pages