Labconco Class I Enclosure User Manual
Labconco Corporation
8811 Prospect Avenue
Kansas City, MO 64132-2696
800-821-5525, 816-333-8811
FAX 816-363-0130
E-MAIL labconco@labconco.com
HOME PAGE www.labconco.com
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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
Please read the User’s Manual before operating the equipment.
Copyright © 2004, 2007, 2012, 2013, 2014, 2015 Labconco Corporation. All rights reserved.
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. Glassware is not warranted from breakage when dropped or mishandled.
The warranty for Purifier® HEPA Filtered Enclosures and Purifier® Class I Filtered Enclosures will
expire one year from date of installation or two years from date of shipment from Labconco,
whichever is sooner. Warranty is non-transferable and only applies to the owner (organization) of
record.
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 not covered.
The information contained in this manual and the accompanying products are copyrighted and all rights
reserved by Labconco Corporation. Labconco Corporation reserves the right to make periodic design
changes without obligation to notify any person or entity of such change.
Returned or Damaged Goods
Do not return goods without the prior authorization from Labconco. Unauthorized returns will not be
accepted. If your shipment 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.
The United States Interstate Commerce Commission rules require that claims be filed with the delivery
carrier within fifteen (15) days of delivery.
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.
Contacting Labconco Corporation
If you have questions that are not addressed in this manual, or if you need technical assistance, contact
Labconco’s Customer Service Department or Labconco’s Product Service Department at 1-800-821-5525
or 1-816-333-8811, between the hours of 7:00 a.m. and 6:00 p.m., Central Standard Time.
Part #3905503, Rev. C
ECO J457
ORIGINAL INSTRUCTIONS
TABLE OF CONTENTS
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 8
Unpacking Your Enclosure 9
Installing the Filtered Enclosure on a Supporting
Structure and Work Surface 9
Connecting to the Exhaust System (Optional) 12
Installation of HEPA Filters and Accessory Odor
Control Carbon Filters 14
Connect the Electrical Supply Source to Filtered Enclosure 15
Set the Face Velocity with Speed Control Adjustment 16
Validating the Vented Enclosure 16
Sealing the Filtered Enclosure to the Work Surface 17
CHAPTER 4: HIGH PERFORMANCE FEATURES AND
SAFETY PRECAUTIONS 18
High Performance Features 18
Components 19
Safety Precautions 24
CHAPTER 5: APPROPRIATE APPLICATIONS FOR YOUR
FILTERED ENCLOSURE 27
Routine Daily Work Procedures 27
Suitable Applications 29
HEPA Filter Applications, Suitability & Guidelines 29
Odor Control Carbon Filter Applications 30
Definition of Terms 30
Appropriate Chemicals for Odor Control Carbon Filters 31
Hazardous Misapplications for Odor Control Carbon
Filters with Volatile Chemicals 32
Chemical Carcinogen Use with Odor Control Carbon Filters 32
Prohibited Acid Use 32
CHAPTER 6: MAINTAINING YOUR FILTERED ENCLOSURE 33
Routine Maintenance Schedule 34
Decontamination 35
Determination of When to Replace HEPA Filters 35
How to Install a New HEPA Filter 35
HEPA Filter Leak Test 38
Setting the Inflow Face Velocity with the Speed Control
Adjustment 39
Calibrate and Operate the Airflow Monitor 40
Determination of When to Replace Odor Control Carbon Filters
and How to Replace 43
Calculating Odor Control Carbon Filter Life 44
Initial Certification 46
Re-Certification 46
Fluorescent Light Replacement 46
UV Light Replacement 46
Motorized Impeller Replacement 47
Speed Control Replacement 49
Trace Odor Carbon Filter Installation 49
CHAPTER 7: ACCESSORIZING & MODIFYING YOUR
FILTERED ENCLOSURE 50
CHAPTER 8: TROUBLESHOOTING & SERVICER
OPERATING LOG 56
APPENDIX A: FILTERED ENCLOSURE COMPONENTS
AND REPLACEMENT PARTS 60
APPENDIX B: DIMENSIONS AND EXHAUST OPTIONS 65
APPENDIX C: FILTERED ENCLOSURE SPECIFICATIONS 68
APPENDIX D: QUICK CHART FOR THE FILTERED
ENCLOSURES 69
APPENDIX E: REFERENCES ON VENTILAITON, SAFETY,
OCCUPATIONAL HAZARDS, BIOSAFETY
AND DECONTAMINATION 70
1
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 of experience in manufacturing fume hoods and more than 30
years of 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,
particulates, and nuisance powders, Labconco recommends the use of the Purifier
HEPA Filtered Enclosure. See chart below and contact Labconco for additional
ordering information.
Product Service 1-800-522-7658
Chapter 1: Introduction
2
No.
Application
Product
Filters
Bag-in/Bag-out
HEPA
UV
Light
1.
Nuisance Powders,
Biohazardous
Materials
Purifier HEPA
Filtered
Enclosure
HEPA
NO
Decontamination
Required
NO
2.
Nuisance Powders,
Biohazardous &
Volatile Chemicals
Purifier HEPA
Filtered
Enclosure
HEPA
and
Carbon*
NO
Decontamination
Required
NO
3.
Biohazardous
Materials & Nuisance
Powders
Purifier Class I
Enclosure
HEPA
NO
Decontamination
Required
Included for
Surface
Decontamination
4.
Biohazardous
Materials, Nuisance
Powders & Volatile
Chemicals
Purifier Class I
Enclosure
HEPA
and
Carbon*
NO
Decontamination
Required
Included for
Surface
Decontamination
!
* 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.
If the unit is not operated as specified in this manual it may
impair the protection provided by the unit.
Si l'unité n'est pas utilisée comme spécifié dans ce manuel il
peut diminuer la protection fournie par l'unité.
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.
Chapter 5: Using Your Filtered Enclosure discusses the basic operation of how to
prepare, use and shut down your filtered enclosure.
Product Service 1-800-522-7658
Chapter 1: Introduction
3
!
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 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.
Product Service 1-800-522-7658
Chapter 1: Introduction
4
2'
3'
4'
!
A number icon precedes information that is specific to a 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.
CAUTION – See Manual. When this symbol is on the unit it indicates a
caution that is detailed in this manual.
ATTENTION - Voir manuel. Lorsque ce symbole est sur l'unité, il indique une
mise en garde qui est indiqué dans ce manuel.
Product Service 1-800-522-7658
5
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.
Product Service 1-800-522-7658
Chapter 2: Prerequisites
6
!
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.
Do not position the unit so that it is difficult to operate the main
disconnect device.
Ne placez pas l'appareil de sorte qu'il est difficile de faire
fonctionner le dispositif principal de déconnexion.
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 thimble exhaust connection 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.
Product Service 1-800-522-7658
Chapter 2: Prerequisites
7
Enclosure
Width
Model Description
Face
Velocity
(fpm)
Exhaust
Volume
(CFM)
Noise
Pressure
db(A)
Max.
Equivalent
Resistance
of 6" Duct
(Ft)
Max.
External
Static
Pressure
2'
2' Purifier Class I Enclosure
2' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
85
110
115
130
145
155
48-53
49-55
50-56
51-57
53-58
54-59
400
220
200
140
80
70
.20"
.19"
.18"
.16"
.13"
.12"
3'
3' Purifier Class I Enclosure
3' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
130
165
175
200
220
230
48-53
52-56
53-57
55-58
58-61
60-64
130
65
50
35
25
20
.15"
.12"
.11"
.09"
.08"
.07"
4'
4' Purifier Class I Enclosure
4' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
175
220
235
265
295
310
49-54
54-58
58-61
60-63
62-66
64-67
100
60
50
35
25
20
.20"
.19"
.18"
.16"
.13"
.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.
Product Service 1-800-522-7658
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.
Product Service 1-800-522-7658
Chapter 3: Getting Started
9
!
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 THE PRIOR
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 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 chemicalresistant 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.
Product Service 1-800-522-7658
Chapter 3: Getting Started
10
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.
Product Service 1-800-522-7658
11
Filtered Enclosure Installation
Chapter 3: Getting Started
Figure 3-1
Product Service 1-800-522-7658
Chapter 3: Getting Started
12
!
!
Connecting to the Exhaust System
(Optional)
ATTENTION: 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.
Thimble exhaust connection aids in the removal of chemicals or applications
where a higher degree of biohazard and particulate removal is required. See
Chapter 7 for ordering thimble exhaust for the Purifier HEPA Filtered Enclosure or
Purifier Class I Enclosure. Both 6" for house exhaust and 5" for connection to a
FilterMate Portable Exhauster are available. Review Chapter 2 for exhaust
prerequisites and review Chapter 7 for ordering blower exhaust equipment. See
figure 3-2 and figure B-2 for thimble exhaust 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.
Product Service 1-800-522-7658
Chapter 3: Getting Started
13
Figure 3-2
Thimble Exhaust Connection shown installed on
Purifier Models (Optional)
Part #3924400 (2'), 3924401 (3'), and 3924402 (4')
Product Service 1-800-522-7658
Chapter 3: Getting Started
14
HEPA
ACCESSORY
CARBON
Installation of HEPA Filters and
Accessory Odor Control Carbon Filters
HEPA Filters
HEPA filters are shipped installed with the gasket on the downstream side. The
HEPA filters are leak checked at Labconco. A second leak check should be
performed 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
non-biohazardous 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)
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.
Product Service 1-800-522-7658
Chapter 3: Getting Started
15
Filter Type
Appropriate Use
HEPA
2' 3707900
3' 3707901
4' 3707902
HEPA filters are high-efficiency particulate air filters
having a particulate removable efficiency of 99.99%
for particles with a diameter of 0.3 micron.
Organic Vapor
Activated Carbon
2' 3937200
3' 3937300
4' 3937400
Adsorbs organic compounds designated by NIOSH
guidelines as acceptable for use with chemical
cartridge-type respirators. 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.
Formaldehyde
(Formalin)
2' 3937201
3' 3937301
4' 3937401
Formaldehyde requires the use of an impregnated
carbon for the treatment of formaldehyde.
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.
Ammonia and
Amines
2' 3937202
3' 3937302
4' 3937402
Treats ammonia, low molecular weight amines and
other bases designated by NIOSH as acceptable for
use with ammonia cartridge type respirators.
Requires the use of an 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.
CARBON
HEPA
CARBON
CARBON
!
!
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.
Do not use any detachable power cord that is not adequately rated
for the unit.
Ne pas utliser un fil électrique amovible qui n’est pas du tension
Product Service 1-800-522-7658
nominale de l’appareil.
Chapter 3: Getting Started
16
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.
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.
Product Service 1-800-522-7658
Chapter 3: Getting Started
17
!
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.
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1
CHAPTER 4
HIGH PERFORMANCE
FEATURES AND SAFETY
PRECAUTIONS
High Performance Features
The patented1 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.
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.
U.S. Patent No. 6,461,233
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Chapter 4: High Performance Features and Safety Precautions
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17
26
16
10
15
3 8 18
2
29 5 6
4
19
1
Not Shown 7, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24, 25, 28 (See Figure 4-2)
Figure 4-1
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Chapter 4: High Performance Features and Safety Precautions
20
HEPA Filtered Enclosure Airflow Diagram
Figure 4-2
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