Gentek 3950301, 3940300, 3940422 3950200, 3940320, 3940201, 3950302, 3950, 3950220, 3940221, 3940321, 3950320, 3940222, 3940420, 3950221, 3940220, 3940302, 3940421, 3940200, 3940400, 3940202, 3950300, 3950202, 3940301, 3940401, 3950201, 3940402, 3950222, 3940322 User Manual

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User’s Manual

XPertFiltered Balance Systems &

XPertFiltered Balance Stations

Models

3940200, 3940201, 3940202, 3940220, 3940221,

3940222, 3940300, 3940301, 3940302, 3940320, 3940321, 3940322, 3940400, 3940401, 3940402, 3940420, 3940421, 3940422

3950200, 3950201, 3950202, 3950220, 3950221, 3950222, 3950300, 3950301, 3950302, 3950320, 3950321, 3950322, 3950400, 3950401, 3950402, 3950420, 3950421, 3950422

Labconco’s Mascot,

Labby the LABster

Labconco XPert Filtered Balance System/Station 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 #3905501, Rev. B

ECO C695

ABLE

F

ONTENTS

 

T

O C

 

CHAPTER 1: INTRODUCTION

1

About This Manual

 

3

Typographical Conventions

 

4

CHAPTER 2: PREREQUISITES

5

Support, Vibration & Movement Requirements

6

Temperature Variation Requirements

6

Humidity and Static Electricity Requirements

7

Background on Electrostatics or Static Electricity

7

Location and Air Current Requirements

8

Exhaust and Blower Requirements

8

Electrical Requirements

 

10

Space Requirements

 

10

CHAPTER 3: GETTING STARTED

11

Unpacking Your Enclosure

 

12

Installing the Filtered Enclosure on a Supporting

 

Structure and Work Surface

12

Connecting to the Exhaust System (Optional)

15

Installation of HEPA Filters and Accessory Odor

 

Control Carbon Filters

 

18

Connect the Electrical Supply Source to Filtered Enclosure

19

Set the Face Velocity with Speed Control Adjustment

21

Validating the Vented Enclosure

21

Sealing the Filtered Enclosure to the Work Surface

22

CHAPTER 4: HIGH PERFORMANCE FEATURES AND

 

SAFETY PRECAUTIONS

23

Components

 

 

25

Safety Precautions

 

31

CHAPTER 5: APPROPRIATE APPLICATIONS FOR YOUR

 

FILTERED ENCLOSURE

35

Routine Daily Work Procedures

35

Suitable Applications

 

37

HEPA Filter Applications, Suitability & Guidelines

37

Odor Control Carbon Filter Applications

38

Definition of Terms

 

39

Appropriate Chemicals for Odor Control Carbon Filters

40

Hazardous Misapplications for Odor Control Carbon

 

Filters with Volatile Chemicals

40

Chemical Carcinogen Use with Odor Control

 

Carbon Filters

41

Prohibited Acid Use

41

CHAPTER 6 MAINTAINING YOUR FILTERED ENCLOSURE 43

Routine Maintenance Schedule

44

Decontamination

45

Determination of when to Replace HEPA Filters

45

How to Install a New HEPA Filter with Bag-In/Bag-Out

 

Procedure for XPert Filtered Balance Systems and Stations

46

HEPA Filter Leak Test

47

Setting the Inflow Face Velocity with the Speed Control

 

Adjustment

49

Calibrate and Operate the Airflow Monitors

50

Guardian Digital 1000 Airflow Monitor

52

Determination of When to Replace Odor Control

 

Carbon Filters and How to Replace

56

Calculating Odor Control Carbon Filter Life

58

Initial Certification

59

Re-Certification

59

Fluorescent Light Replacement

60

Motorized Impeller Replacement

60

Speed Control Replacement

62

CHAPTER 7 ACCESSORIZING & MODIFYING YOUR

 

FILTERED ENCLOSURE

63

CHAPTER 8 TROUBLESHOOTING & SERVICER

 

OPERATING LOG

69

APPENDIX A: FILTERED ENCLOSURE COMPONENTS

 

AND REPLACEMENT PARTS

73

APPENDIX B: DIMENSIONS AND EXHAUST OPTIONS

79

APPENDIX C: FILTERED ENCLOSURE SPECIFICATIONS

83

APPENDIX D: QUICK CHART FOR THE FILTERED

 

ENCLOSURES

89

APPENDIX E: REFERENCES ON VENTILAITON, SAFETY,

 

OCCUPATIONAL HAZARDS, BIOSAFETY

 

AND DECONTAMINATION

90

DECLARATION OF CONFORMITY

95

CHAPTER 1

INTRODUCTION

Congratulations on your purchase of a Labconco XPert™ Filtered Balance System or XPert™ Filtered Balance Station. Your enclosure provides personnel protection through superior containment while conserving energy at OSHA approved velocities as low as 60 feet per minute. 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 or noxious 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 XPert filtered 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 XPert features so that you can use the filtered enclosure efficiently. For weighing hazardous and nuisance powders, Labconco recommends the purchase of the XPert Filtered Balance System or XPert Filtered Balance Station. Both XPert

1

Chapter 1: Introduction

filtered enclosures include a true bag-in/bag-out HEPA filter to properly protect personnel during filter changing operations. See chart below and contact Labconco for additional ordering information.

No.

Application

Product

Filters

Bag-in/Bag-out

UV

HEPA

Light

 

 

 

 

1.

Weighing

XPert Filtered

HEPA

Required,

 

 

Hazardous &

Balance

 

included with

 

 

Nuisance

System, XPert

 

XPert

No

 

Powders &

Filtered

 

 

 

 

 

 

 

Particulates

Balance

 

 

 

 

 

Station

 

 

 

2.

Weighing

XPert Filtered

HEPA

Required,

 

 

Hazardous and

Balance

and

included with

 

 

Nuisance

System, XPert

Carbon*

XPert

 

 

Powders,

Filtered

 

 

No

 

Particulates &

Balance

 

 

 

 

Volatile

Station

 

 

 

 

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.

2

Chapter 1: Introduction

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 XPert 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.

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.

3

Chapter 1: Introduction

!

2' 3' 4'

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

Appendix D: Quick Chart provides an airflow table 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.

• 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.

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, balance 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 temperature variation requirements.

The humidity and static electricity requirements.

The location and air current requirements.

The exhaust and blower requirements.

The electrical power requirements.

The space requirements.

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

Refer to Appendix C: XPert 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 chemical-resistant work surface.

The ability for analytical balances to accommodate vibration varies with type and brand. More advanced balances have improved tolerance, however in the preparation of a balance enclosure site, please consider the following:

Avoid tubular stands or mobile benches that have the potential of moving when touched.

Work surfaces should be of a thick rigid material that remains stable when buttons are pressed. An epoxy benchtop or accessory work surface is a minimum requirement.

A bench that is rigidly mounted to the floor or fixed to the wall, but not both, may be appropriate.

The corners of a building typically have less vibration than the center.

The bench with the balance enclosure should not contain any vibration-producing equipment, such as shakers or pumps.

Marble, granite or epoxy balance tables are generally recommended by the manufacturers of analytical and microbalances. (See the installation instructions in Chapter 3).

Marble slabs with dampening pads placed within the enclosure are also an effective low cost means of controlling vibration.

Temperature Variation Requirements

The extent the balance readings are influenced by temperature variations is a function of the balance design. Most manufacturers would suggest that a temperature drift of 1-2°C is generally tolerable. Only validation through your Operational Qualification protocol can define what is acceptable. To minimize the potential for temperature variations:

Never install balances near heating sources such as radiators and hot plates.

Do not place the balance and enclosure on a bench that would receive direct sunlight.

6

Chapter 2: Prerequisites

Humidity and Static Electricity Requirements

Electrostatics can be troublesome in a balance enclosure. It is important to understand and, to the extent possible, control static charges. An electrostatic charged vessel, sample or enclosure can apply forces and lead to errors in weighing. The repulsion or attraction can be detected with micro, semi micro and analytical balances. Static charges can also lead to particulates being attracted to surfaces within the balance enclosure. Containment of harmful powders, prevention of cross-contamination and clean up are enhanced when static attraction of powders is minimized. The construction of the XPert Filtered Balance System and XPert Filtered Balance Station avoid the use of plastics, which are highly insulative. The advantages to the glass and epoxy-coated metal construction are twofold:

1.The enclosure does not contribute high electrostatic forces affecting the precision of the balance.

2.The attraction and ultimate accumulation of powders, (hazardous or nuisance), are minimized on the inside of the enclosure.

To correct or ensure against electrostatic issues, the following additional measures may be prescribed to improve weighing operations.

Maintain a humidity level between 45 and 60%. The ability to sustain this humidity range can be challenging depending upon the regional climate and HVAC system.

Ionizers in various forms (guns, bars and blowers) are effective ways to flood an area with ions and essentially “neutralize” electrostatic electricity.

Background on Electrostatics or Static Electricity

Electrostatic charges on a surface such as the wall of a balance enclosure are not created by moving air. Gases do not cause the charge. Impurities within the air impinging upon surfaces dictate the polarity and magnitude of the charge. The process, triboelectrification, occurs when the dust particles contact the surface, creating friction and electrons move across the interface.

7

Chapter 2: Prerequisites

The ability of a material to become polarized is a property known as permittivity. On highly insulative materials like acrylic, ions or charged molecules are strongly bound to the surface by polarization forces. The higher the force, the higher is the permittivity value of the material. It is suggested by balance manufacturers that the use of high permittivity materials, such as plastic be avoided.

Since static electricity is a surface phenomenon, materials can also be classified by their surface resistivity measured in ohms per square. The table below lists the surface resistivity of various classes of material.

Surface Resistivity Table

Material

Surface Resistivity

Example

Conductive

0

 

105 per square

Skin, Metals

Static dissipative

105

109

per square

Glass

Antistatic

109

1012

per square

Polyethylene bag

Insulative

1012 per square

Acrylic, Packing foam, Styrofoam

Location and Air Current Requirements

The XPert Filtered Enclosures have been designed to contain hazards by negating typical cross drafts and turbulence within the opening. Air movement does not affect most modern balances with draft shields. 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 to balance readings.

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

XPert

System

The XPert Filtered Balance System uses 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.

8

Chapter 2: Prerequisites

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.

The XPert Filtered Balance Station does not include the motorized impeller and must be exhausted to the outside by a remote blower. The XPert Filtered Balance Station remote blower may be switched from the blower switch on the enclosure. See electrical Requirements in Chapter 2, and Electrical Supply Connections in Chapter 3. Only one 6" exhaust connection is required for the 2', 3', or 4' XPert Filtered Balance Stations to exhaust to the outside.

Data for the exhaust volume, noise pressure and enclosure static pressure loss are listed for each filtered enclosure model at face velocities of 60, 75, 80, 90, 100, and 105 fpm.

XPert

Station

 

 

 

 

XPert

 

Xpert

 

 

 

 

 

Station

 

System

Xpert

 

 

 

 

Initial Static

XPert

Max.

System

 

 

 

 

Pressure

System

Equivalent

Max.

 

 

Face

Exhaust

Loss with

Noise

Resistance

External

Enclosure

 

Velocity

Volume

HEPA filter

Pressure

of 6" Duct

Static

Width

Model Description

(fpm)

(CFM)

(in w.g.)

db(A)

(Ft)

Pressure

2'

2' XPert Filtered Balance System

60

85

.35"- .41"

48-53

400

.20"

 

2' XPert Filtered Balance Station

75

110

.45" - .54"

49-55

220

.19"

 

 

80

115

.48" - .57"

50-56

200

.18"

 

 

90

130

.56" - .65"

51-57

140

.16"

 

 

100

145

.62" - .72"

53-58

80

.13"

 

 

105

155

.65" - .76"

54-59

70

.12"

3'

3' XPert Filtered Balance System

60

130

.37" - .43"

48-53

130

.15"

 

3' XPert Filtered Balance Station

75

165

.50" - .58"

52-56

65

.12"

 

 

80

175

.53" - .62"

53-57

50

.11"

 

 

90

200

.61" - .71"

55-58

35

.09"

 

 

100

220

.68" - .79"

58-61

25

.08"

 

 

105

230

.71" - .88"

60-64

20

.07"

4'

4' XPert Filtered Balance System

60

175

.40" - .46"

49-54

100

.20"

 

4' XPert Filtered Balance Station

75

220

.53" - .62"

54-58

60

.19"

 

 

80

235

.57" - .66"

58-61

50

.18"

 

 

90

265

.68" - .78"

60-63

35

.16"

 

 

100

295

.76" - .87"

62-66

25

.13"

 

 

105

310

.80" - .91"

64-67

20

.12"

9

Chapter 2: Prerequisites

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.

XPert

Station

Electrical Requirements

Standard duplex electrical receptacles should be nearby for connecting the filtered enclosure, or other equipment, such as a balance for weighing operations. The enclosures include iris passthroughs to allow electrical cords through the back of the enclosure without leaving a large hole for contaminants to escape.

The remote blower for the XPert Filtered Balance Station may be connected to the blower switch on the enclosure. The blower switch is connected to a relay whose wires are terminated in the junction box behind the front panel. We recommend a maximum amperage of 6 amps for this circuit to the remote blower. Please refer to the wiring diagrams in Appendix C. Connect the blower wires inside the junction box to the remote blower per local electrical codes.

Space Requirements

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

Dimensions.

10

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.

11

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

12

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 powders, solvents and chemicals used in conjunction with the XPert 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.

13

Chapter 3: Getting Started

Figure 3-1

Filtered Enclosure Installation

14

XPert

Station

!

!

Chapter 3: Getting Started

Connecting to the Exhaust System (Optional on XPert Filtered Balance System)

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.

The exhaust connection on the XPert Filtered Balance Station has been designed to accept 6" diameter ductwork as shown in Figure 3-2. The exhaust connection ships uninstalled on the top and needs to be fastened with the screws provided. See Chapter 7 for ordering exhaust transition kits for the XPert Filtered Balance System. Exhaust transition kits aid in the removal of chemicals or applications where a higher degree of powder and particulate removal is required. Review Chapter 2 for exhaust prerequisites and review Chapter 7 for ordering blower exhaust equipment. See Figure 3-2 for the XPert Station and Figure 3-3 for exhaust kit options for the XPert Filtered Balance System.

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.

15

Chapter 3: Getting Started

Figure 3-2

XPert Filtered Balance Station only

Model Series 3940200, 3940300, and 3940400

16

Chapter 3: Getting Started

Figure 3-3

Exhaust Duct Connection Kit shown installed on

XPert Filtered Balance System (Optional)

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

17

Chapter 3: Getting Started

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 is recommended before using the enclosure and at least annually thereafter. Consult your Safety Officer and Chapter 6 for the HEPA Filter Leak Test and HEPA Filter Bag- In/Bag-Out Procedure. See Figure 4-2 for HEPA filter location, HEPA filter gasket, filter clamp bolts, and bag-in/bag-out flange. The XPert enclosures have a true bag-in/bag-out HEPA filter to safely dispose of the filter. 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.

18

HEPA

Carbon

Carbon

Carbon

 

 

Chapter 3: Getting Started

 

 

 

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%.

For the remote blower used for XPert Stations, follow the wiring diagram in Appendix C and wire the blower wires in the electrical junction box located behind the front panel. These wires are switched by the electrical relay via the blower switch.

XPert

System

XPert

Station

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Chapter 3: Getting Started

The maximum circuit load for the electrical relay is 6 amps. Only the remote blower wiring is connected inside the electrical junction box. The lights and airflow monitor are powered from a standard duplex electrical receptacle located nearby for connecting the power cord. All wiring for the XPert Filtered Balance Station should be performed by a licensed electrician and conform to local codes. In most cases, the XPert Filtered Balance Station will require the use of shielded conduit to protect the wiring. See Figure 3-4. The grounding connection shall not be made to the terminal box cover. The building electrical supply system for the remote blower should include overload protection such as a switch or circuit breaker in close proximity and within easy reach of the operator. The switch or circuit breaker shall be marked as the disconnecting device. Consult NEC-2002 for proper installation.

Figure 3-4

XPert Filtered Balance Station Conduit Location for Wiring

External Remote Blower.

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Chapter 3: Getting Started

230V Models

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

Set the Face Velocity with the Speed Control Adjustment

For XPert Filtered Balance Systems, adjustment of the speed control gives the correct face velocity and is located behind the front panel. The face velocity should be adjusted from 60 to 100 fpm for weighing 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.

XPert

Filtered

Balance

System Only

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 XPert 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

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Chapter 3: Getting Started

individual ratings). For “field use” ASHRAE testing contact Labconco for a certified on-site contractor. For particulate powder validation, Labconco had containment testing performed to validate the enclosures for sodium naproxen powders. The XPert HEPA filtered 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 that the XPert HEPA Filtered Enclosures provide a safe working environment. Labconco also performed extensive ASHRAE testing to validate the enclosures for gas containment. For copies of these validation reports, contact Labconco Customer Service.

The XPert 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.

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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CHAPTER 4

HIGH PERFORMANCE

FEATURES AND SAFETY

PRECAUTIONS

High Performance Features:

The patented* XPert Filtered Balance System and XPert Filtered Balance Station are designed to meet the needs of the laboratory scientist, and provide superior containment while conserving energy at OSHA approved “low flow” velocities as low as 60 feet per minute. The filtered enclosures have been tested to effectively contain toxic and noxious 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 particulate concentrations through the work area.

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

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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 XPert Filtered Balance System and XPert Filtered Balance Station include a true bag-in/bag-out HEPA filter disposal system to protect the worker from contact with hazardous powders and particulates. User’s of both products are encouraged to routinely check airflow with the use of the airflow monitor.

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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

25

Chapter 4: High Performance Features and Safety

Figure 4-2

HEPA Filtered Enclosure Airflow Diagram

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