Gentek 3950201 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-yearwarranty 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

CHAPTER1

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-micronparticles. 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 reviewChapter 4: High Performance Features and Safety Precautions before you begin working in the enclosure. Even if you are an experienced user, please reviewChapter 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-outHEPA 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-footwide model. The 3' icon indicates the text is specific to the3-footmodel, etc.

4

CHAPTER2

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 Specificationsfor 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-resistantwork 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-producingequipment, 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°Cis 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-contaminationand 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 andepoxy-coatedmetal 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-filteredexhaust 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-filteredexhaust 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

CHAPTER3

GETTINGSTARTED

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-bladescrewdriver, 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-liftingguidelines.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-wrapor 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-resistantwork 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-resistantepoxy resin. The surface should benon-porousand 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 Figure3-2for the XPert Station and Figure3-3for 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-OutProcedure. See Figure4-2for HEPA filter location, HEPA filter gasket, filter clamp bolts, andbag-in/bag-outflange. The XPert enclosures have a truebag-in/bag-outHEPA 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 4-1and4-2for 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-efficiencyparticulate

 

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-typerespirators.

 

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

19

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. ConsultNEC-2002for proper installation.

Figure 3-4

XPert Filtered Balance Station Conduit Location for Wiring

External Remote Blower.

20

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 Figures6-1and6-2in 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

21

Chapter 3: Getting Started

individual ratings). For “field use” ASHRAE testing contact Labconco for a certified on-sitecontractor. 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 ofBacillus 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.

22

CHAPTER4

HIGHPERFORMANCE

FEATURESANDSAFETY

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-enhancingand 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)

23

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-outHEPA 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.

24

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

26

Chapter 4: High Performance Features and Safety

1.Aerodynamic Clean-Sweep™Air Foilhas 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-EnhancingUpper Sash Foilincludes 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

27

Chapter 4: High Performance Features and Safety

3.Upper Dilution Air Supply provides bypass air from above the work area. This feature constantly bathes the inside of the sash with clean air and reduces powders, particulate materials and chemical fumes along the sash plane, near the critical breathing zone. Five to seven percent of the required air volume is introduced through the upper dilution air supply. The upper dilution air supply also reduces stagnant pockets of air in the upper interior. See Figure4-2.

4.Zoned Rear Perforated Baffle directs horizontal laminar air streams to thethree-zonedsections of the perforated baffle. Thethree-zonedsections have increasingly more open area at the bottom that help form laminar airflow. This minimizes the potential for air to roll forward preventing contaminants from moving toward the sash opening. The majority of contaminants are highly diluted, captured and removed on the first pass through the enclosure. See Figures4-1and4-2.

5.Side-Entry Air Foils allowturbulence-freeair to enter the enclosure from the sides and allow clean air to sweep the interior walls of the enclosure. See Figures4-1and4-2.

6.Ergonomic Slope of 10 degrees provides maximum visibility, and comfort reduces glare, thereby minimizing operator fatigue. See Figure4-1.

7.Internal Depth of 23" provides necessary depth to support modern balances and other auxiliary equipment without extending outside the enclosure or resting on the lower air foil. See Figure4-1

8.Safety Glass Sash with Spring-LoadedLatchhas a wiping seal to contain contaminants and features a springloaded latch to secure sash open for loading and cleaning. The sash must be down for normal operation. See Figure 4-1.

9.Utility Ports with Iris allows electrical cords and data cords to pass through the back of enclosure without leaving a large hole for contaminants to escape. The enclosure ships with solid plugs. Iris plugs are included with the User’s Manual. See Figure4-1and4-2.

10.Accessory Guardian Airflow Monitor or Guardian™ 1000 Digital Airflow Monitor continuously monitors airflow. An audio/visual alarm alerts the user to low airflow conditions. The Guardian 1000 Digital Airflow

28

Chapter 4: High Performance Features and Safety

Monitor also displays a face velocity value, provides an RS232 output, a night setback mode and several auxiliary relay ports. Both airflow monitors are available options on all XPert models. See Figure 4-1and4-2.

11.Inherently Safe Impeller has a negative pressure plenum that surrounds the positive pressure impeller so that if a leak should occur, the unfiltered air is captured and refiltered. See Figure4-2.

12.Vibration-IsolatedMotorized Impellerhas vibration isolation supports, which eliminates transfer of vibration to the work surface. This is extremely useful in weighing operations with precision balances. The impeller wheel is also dynamically balanced. See Figure 4-2.

13.Speed Control regulates the speed of the motorized impeller and is used by the certifier to validate and adjust the inflow velocity. Located behind the front panel. See Figure4-2.

14.Space-Saving Design increases effective laboratory workspace, because the impeller and HEPA filter are contained within the enclosure, a separate filtered blower module is not required. See Figure4-1

15.Fluorescent Lamp is located above the work area, out of contact with contaminated air. A safety glass window beneath the lamp distributes the light evenly across the work surface. See Figure4-1.

16.Filter System Pressure Gauge indicates the total system pressure across the HEPA filter and pressurized plenum to help predict HEPA filter loading. See Figure 4-1.

17.Filter Clamping Bolt evenly seals the HEPA filter to the frame of the enclosure. See Figure4-1and4-2.

18.Sash. The sash is constructed of 1/4 inch tempered safety glass. It pivots up for loading and cleaning. See Figure4-1

19.Control Panel. The control panel, which is located above the sash, contains the filter system pressure gauge, control switches and the electronics. See Figure4-1.

29

Chapter 4: High Performance Features and Safety

20.HEPA (High Efficiency Particulate Air) Filter is rated to remove 99.99% of all particles 0.3 micron in size. See Figure 4-2.

21.Lamp Ballast (Not Shown) for the fluorescent lamp is located behind the control panel.

22.Accessory Work Surface (not shown) is dished and contoured to fit the dimensions of the enclosures to contain spills.

23.XPert Filtered Balance Station Exhaust Collar (Not shown) provides a 6" diameter transition to a remote blower or house exhaust system. See figure 3-2 in Chapter 3.

24.Accessory Odor Control Carbon Filters are available for nuisance odor control. Accessory carbon filters are designed to remove trace amounts of noxious fumes; capacity is not adequate to remove continuous fume generation. The carbon filters are supported above the HEPA filter and the gasket side is down and compressed by the weight of the carbon filter. Carbon filters are listed in Chapter 7. See Figure 4-2.

25.Accessory Exhaust Connection Kits are available to duct integral blower models including the XPert Filtered Balance System to the outside. The exhaust connection allows the operator additional protection from hazardous fumes or vapors and should be used if the carbon filter capacity is not adequate. Each kit includes an epoxycoated steel exhaust transition adapter with manual adjustable damper designed for 6" diameter PVC duct. See Figure 3-3 in Chapter 3.

26.Upper Diffuser Screen provides protection for the HEPA Filter and (LED) airflow sensor. See Figure4-1and4-2.

27.HEPA Filter Access Port to access HEPA filter during filter changing procedures. For harmful powders and particulates, the truebag-in/bag-outprocedure is used to properly dispose of the contaminated HEPA filter. See Figure4-2.

28.Utility Shelves (not shown) allow the user to hold utensils and printers on shelves inside the enclosure. See Chapter 7.

30

Chapter 4: High Performance Features and Safety

Safety Precautions

1.Although the enclosure has been engineered to maintain optimum operator safety, caution should always be used while working. Prior to using the enclosure, check to make sure that the exhaust blower is operating and that air is entering the enclosure at its specified face velocity. The use of an airflow monitor is recommended to alert the user to a problem with airflow.

2.Use good housekeeping in the enclosure at all times. Clean up spills immediately. Periodically clean enclosure interior.

3.Do not overload the work surface with apparatus or work material. The safe operation of the enclosure is based upon having proper airflow through the structure. Do not place large objects directly on the work surface. Instead, elevate the object 3/4" on blocks to allow a flow of air under the object and into the rear baffle exhaust slots. Ensure blocks are level and secured in place.

4.Blocking large portions of the rear baffle will change the airflow pattern in the enclosure causing turbulence. (Do not store containers or supplies against the rear baffle, as this will affect airflow).

5.Always work with your hands as far back into the enclosure as possible. Keep all powders, chemicals and apparatus inside the lower air foil of the enclosure.

6.Do not work in this enclosure without the exhaust system running.

7.Perchloric acid use in this enclosure is prohibited.

8.High-levelradioisotope materials are prohibited in this enclosure. Consult your Safety Officer.

9.Avoid cross drafts and limit traffic in front of the enclosure. Air disturbances created may draw contaminants out of the enclosure.

10.A qualified certification technician should test the enclosure before it is initially used. The enclosure should be validated whenever it is relocated.

11.The use of safety goggles, protective clothing, gloves and any other personal protective equipment recommended by your safety officer should be used.

31

Chapter 4: High Performance Features and Safety

12.The sash must remain in the down position while using the enclosure.

13.Proper performance of the enclosure depends largely upon its location and the operator’s work habits. Consult the references in Appendix D.

14.The enclosure should be recertified whenever it is serviced or at least annually thereafter.

15.The HEPA filter provides personnel and environmental protection from particulate matter. Because room air is drawn over the work surface during operation, this enclosure should not be used for operations requiring product protection from environmental contamination.

16.Avoid the use of flammable gases or solvents in the enclosure if possible. Care must be taken to ensure against the concentration of flammable or explosive gases or vapors. Use of an open flame should be avoided in the enclosure. Open flames may disrupt the airflow patterns in the cabinet, burn the HEPA filter and damage the filter’s adhesive. Gases under high pressure should not be used in the enclosure as they may disrupt the airflow patterns of the cabinet.

17.HEPA filters are only effective for entrapment of particulate matter. Manipulations that generate gases or vapors from toxic chemicals or radionuclides, must be evaluated carefully from the standpoint of buildup to dangerous levels, the decontamination of the enclosure and compliance with applicable regulations.

18.The surface of the HEPA filter is fragile and should not be touched. Care must be taken to avoid puncturing the HEPA filter during installation or normal operation. If you suspect that a HEPA filter has been damaged DO NOT use the enclosure; contact a local certification agency or Labconco.

19.The HEPA filter in the enclosure will gradually accumulate airborne particulate matter from the room and from work performed in the enclosure. The rate of accumulation will depend upon the cleanliness of the room air, the amount of time the enclosure is operating and the nature of work being done in the enclosure. With normal usage, the HEPA filters will last two to five years before requiring replacement.

32

Chapter 4: High Performance Features and Safety

20.Ensure that the filtered enclosure is connected to an electrical service in accordance with local and national electrical codes. Failure to do so may create a fire or electrical hazard. Do not remove or service any electrical components without first disconnecting the filtered enclosure from electrical service.

21.Use of an open flame must be avoided with the enclosure. Open flames may disrupt the airflow patterns in the enclosure and cause a fire hazard with volatile solvents.

22.Increase the face velocity by adjusting the speed control of the motorized impeller on the XPert Filtered Balance System or change the HEPA filter when the face velocity falls below acceptable limits established by your Safety Officer.

23.Exhaust carbon filters and HEPA filters are disposed as hazardous waste. The user is responsible for recording the chemicals adsorbed or treated by the filters and disposing properly. HEPA filters should be disposed using the disposal bag on XPert enclosures.

24.Ensure only trained operators use the enclosure. New users should review the User’s Manual and become familiar with the operation of the enclosure.

25.If the filtered enclosure is to be used in a confined space, make sure the space is well ventilated and the concentration of toxic contaminants cannot accumulate greater than the TWA.

26.Proper operation of the enclosure depends largely upon the enclosure location and the operator’s work habits. The enclosure should be located away from traffic patterns, doors, fans, ventilation registers, fume hoods, and any other air-handlingdevice that could disrupt its airflow patterns. ConsultChapter 2: Prerequisites andChapter 3: Getting Started sections of this manual for further details.

27.Only powders and particulates removed by HEPA filters and trace chemicals, which can be safely adsorbed and treated with specific carbon based filters are appropriate for use in this enclosure.

28.The warning properties (i.e., odor, taste) of the volatile organic compounds or other material being used in the enclosure must be adequate to provide an early indication that the carbon filter may be saturated or inadequate. Contact Labconco for help with chemical assessment.

33

Chapter 4: High Performance Features and Safety

29.Use the smallest possible quantity of chemical(s) within the enclosure and never exceed the amount, which can be effectively adsorbed by the Odor Control carbon filter before breakthrough.

30.For weighing procedures, adjust face velocity between 60 and 100 FPM for effective operation.

31.Leave the blower on for at least one minute after work in the enclosure has been completed.

32.If a chemical, powder or particulates are spilled on the work surface, DO NOT switch off the blower until all traces have been removed.

33.Tag enclosures with appropriate warning, if filters have been removed for service.

34.If the blower fails during use, processes should cease and the area should be vacated and ventilated.

35.Always refer to the NIOSH Pocket Guide to Chemical Hazards before proceeding.

34

CHAPTER5

APPROPRIATE

APPLICATIONS FOR YOUR

FILTEREDENCLOSURE

Now that the installation of your filtered enclosure is completed, you are ready to use your filtered enclosure. Read this chapter to learn about:

1.Routine Daily Work Procedures.

2.Suitable Applications.

3.Appropriate HEPA Filter Applications, Suitability and Guidelines.

4.Odor Control Carbon Filter Applications.

5.Definition of Terms.

6.Appropriate Chemicals for Odor Control Carbon Filters.

7.Hazardous Misapplications for Odor Control Carbon Filters.

8.Chemical Carcinogen use with Odor Control Carbon Filters.

9.Prohibited Acid Use.

Routine Daily Work Procedures

Planning

Thoroughly understand procedures and equipment required before beginning work.

35

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

Arrange for minimal disruptions, such as room traffic or entry into the room while the enclosure is in use.

Start-up

Turn on exhaust system and accessory light.

Only raise the sash for loading and cleaning.

Check the baffle air slots for obstructions.

Allow the enclosure to operate unobstructed for 1 minute.

Wear a long sleeved lab coat and rubber gloves. Use protective eyewear. Wear a protective mask if appropriate. Consult your Safety Officer for additional personal protective equipment recommendations.

Loading Materials and Equipment

Load only the materials required for the procedure. Do not overload the enclosure.

Do not obstruct the air foil, or rear baffle slots.

Large objects should not be placed close together and should be elevated above the work surface to permit airflow to sweep under the equipment.

After loading, wait one minute to purge airborne contaminants from the work area.

Work Techniques

Keep all materials inside the lower air foil, and perform all contaminated operations as far to the rear of the work area as possible.

Segregate all clean and contaminated materials in the work area.

Avoid using techniques or procedures that disrupt the airflow patterns of the enclosure.

Final Purging

Upon completion of work, the enclosure should be allowed to operate for two to three minutes undisturbed, to purge airborne contaminants from the work area before shutting down the blower.

Unloading Materials and Equipment

Objects in contact with contaminated material should be surface decontaminated before removal from the enclosure.

All open trays, weigh vessels or containers should be covered before being removed from the enclosure.

36

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

Shutdown

• Turn off the exhaust system and light.

Suitable Applications

NIOSH (National Institute for Occupational Safety and Health, USA) has established guidelines for chemical cartridge and HEPA filtered respirators. Suitable applications for the filtered enclosures are based on these guidelines. As with respirators, chemical contaminants are adsorbed or treated by carbon; particulates, powders and biohazardous materials are filtered by the HEPA filter before air is returned to the room. Biohazardous materials or other hazardous solids can be used with the HEPA filtered enclosure as long as appropriate decontamination occurs before filter changing operations. See Chapter 6 for decontamination procedures.

Listed below are suitable applications for HEPA filters and accessory Odor Control Carbon Filters.

HEPA Filter Applications,

Suitability and Guidelines

Biohazardous materials and hazardous solids to protect only the operator and the surrounding environment.

Weighing of powders.

Release of particulates using a HEPA filter.

Powder or particulate procedures traditionally performed on an open bench.

The HEPA filtered enclosure provides personal and environmental protection from particulate matter, hazardous powders and biohazardous materials. Because room air is drawn through the enclosure during operation, this enclosure should not be used for operations requiring sample protection from environmental contamination.

HEPA filters are only effective for entrapment of particulate matter, hazardous powders and biohazardous materials. Manipulations that generate gases or vapors, i.e., toxic chemicals or radionuclides, require the use of a HEPA and carbon filter in combination. Otherwise the enclosure should be ducted to the outside. The surface of the HEPA filter is fragile and should not be touched. Care must be taken to avoid puncturing the HEPA filter during installation. If you suspect that a HEPA filter has been damaged, DO NOT use the enclosure. See Chapter 6 for Replacing the HEPA Filter or using a Bag-In/Bag-OutDisposal Bag.

37

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

The HEPA filter will gradually accumulate airborne particulate matter from the room and from work performed in the enclosure. The rate of accumulation will depend upon the cleanliness of the room air, the amount of time the enclosure is operating, and the nature of work being done. With normal usage, the HEPA filters will last two to five years before requiring replacement.

Each filtered enclosure is provided with a HEPA filter. For powders and particulates follow the HEPA Filter Bag-In/Bag-Out procedure in Chapter 6 for disposal instructions. For biohazardous materials, follow the Decontamination Procedure in Chapter 6 for disposal instructions.

Odor Control Carbon Filter Applications (sold as an accessory)

Release of low concentrations of vapors effectively adsorbed or treated in carbon based filters.

Treatment of low-levelcarcinogens or suspected carcinogens. (See Chemical Carcinogens in Chapter 5)

Procedures that may have traditionally been done on the open bench (low levels only).

Odoriferous chemicals that are an unpleasant nuisance.

Other applications, not fitting the above guidelines, would be better suited with the exhaust ducted to the outside. The exhaust connection kit (See Chapter 3 and Chapter 7) can be added to the XPert Filtered Balance System for ducting to the outside. Additionally, the XPert Filtered Balance Station is factory prepared to be connected to a remote blower, or house exhaust system for ducting to the outside. Labconco also manufactures fume hoods and Class II Biological Safety Cabinets for exhausting to the outside. Consult Labconco product specialist for additional information.

REFERENCES TO NIOSH OR OSHA

GUIDELINES AND REGULATIONS APPLY TO

ANY WORK PLACE UNDER THE JURISDICTION OF THE U.S. DEPARTMENT OF LABOR. OTHER COUNTRIES OUTSIDE THE U.S. HAVE ESTABLISHED STANDARDS, WHICH MAY DIFFER SLIGHTLY FROM THOSE USED AS GUIDELINES FOR THIS

38

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

PRODUCT. IT IS THE USER’S

RESPONSIBILITY TO BECOME AWARE OF

LOCAL REGULATIONS GOVERNING THE

SAFE USE AND DISPOSAL OF CHEMICALS,

CARBON AND HEPA FILTERS. KNOWLEDGE

OF ESTABLISHED SAFE EXPOSURE LEVELS

IS IMPERATIVE TO THE PROPER USE OF

FILTERED ENCLOSURES.

Definition of Terms

NIOSH – National Institute for Occupational Safety and

Health/Mine Safety and Health Administration. (U.S.A.)

TWA – Recommended Exposure Limits expressed as a Time Weighted Average. The exposure limit for that chemical for up to a10-hourworkday, 40 hours a week. Expressed in units of parts per million or milligrams per cubic meter.

Odor Threshold – The value in parts per million or milligrams per cubic meter for which one might expect to smell a chemical’s presence in the air. This value is very subjective and detection will vary with the sensitivity of one’s nose. The period of time until the odor threshold is reached in the exhaust stream can be estimated from Labconco exclusive computerized filter modeling program. Contact Labconco on carbon filter life for specific applications. See Chapter 6.

Saturation Level or Time – There is a limit to the amount of chemical that can be adsorbed by activated carbon, or neutralized bychemically-treatedcarbon. Once the capacity of the carbon is reached, it is considered to be saturated and will adsorb (or neutralize) no further material; the outlet concentration of the chemical will equal the inlet concentration from that point until the filter is replaced. (Note that the capacity of activated carbon is not a constant, but varies with the inlet concentration). Labconco Technical specialists can determine with the computerized carbonmodeling program the estimated time saturation for a particular chemical. When using a HEPA filter alone in all filtered enclosures or in combination with an Odor Control carbon filter, the speed control will need to be increased to allow for HEPA filter loading. Measure filtered enclosure face velocity with an anemometer.

IDLH (Immediately Dangerous to Life and Health). An atmosphere that poses an immediate hazard to life or produces

39

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

immediate irreversible health effects. IDLH concentrations should not be approached in the enclosure.

Appropriate Chemicals for Odor Control Carbon Filters

Below is a general set of rules to determine appropriateness of chemical usage.

Selected organic chemicals considered to be ! occupational carcinogens by NIOSH can be used

in the filtered enclosure with carbon filters under rigid restrictions. See separate discussion on carcinogens for special instructions.

Organics must have time weighted exposure limits (TWA) of 1

PPM or greater.

Chemicals must have a detectable odor at concentrations below the

TWA for the chemical.

Chemicals must be designated by NIOSH guidelines as acceptable for use with chemical cartridge-typerespirators (the exception is formaldehyde and ammonia/amines, which used impregnated carbon). Chemicals not listed by NIOSH in the Pocket Guide must be approved by Labconco Product Specialist (or Engineering).

Inlet concentration must never exceed the IDLH (Immediately

Dangerous to Life and Health) concentrations.

Chemicals having a recommendation by NIOSH of at least “Escape GMFOV” (Gas Mask Full-FaceRespirator).

When evaporating a mixture of chemicals, the chemical having the lowest TWA will be used to determine if the mixture meets the guidelines.

Call a Labconco Product Specialist at 1-800-821-5525for assistance in chemical appropriateness.

Hazardous Misapplications for Odor Control Carbon Filters with Volatile Chemicals

There is one scenario where the accessory carbon filter misapplication would be a part of a hazardous condition. If the

40

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

user continues to operate the enclosure with any of the following conditions present a potentially hazardous condition will exist:

1.The inlet concentration of vapors is greater than the TWA.

2.The carbon filter becomes saturated.

3.The ventilation of the room is insufficient to dilute the exhaust of the enclosure to below the TWA for the chemical.

When the inlet concentration is greater than the TWA, extra measures must be taken to monitor the filter and number of room air exchanges.

Chemical Carcinogen Use with Odor Control Carbon Filters

Selected carcinogens may be used safely with Odor Control carbon filters under the following restrictions.

The use of a vented fume hood or ventilated

!enclosure with ducting to the outside is always the preferred method when working with carcinogens. The Odor Control carbon filters should only be used, as a last resort when venting to the outside is not an option. Another option is the use of the XPert Filtered Balance Station, which uses a remote blower.

The potential carcinogens are listed in the NIOSH Pocket Guide to Chemical Hazards as “Ca.” Each potential carcinogen must have a TWA of 1 or greater; have minimum respirator recommendation of Escape GMFOV, and an odor threshold significantly lower than the TWA for the chemical.

The inlet concentration or the evaporation rate of the chemical must never exceed the TWA for the chemical.

Consult a Labconco Technical Specialist for estimated saturation life. See Chapter 6 for an example of estimating saturation life. Another source is the Labconco chemical guide for carbon filtered enclosures.

Prohibited Acid Use

The XPert Filtered Balance System motorized impeller cannot be exposed to acids. Where applications require the use of acids, a

41

Chapter 5: Using Your Filtered Enclosure and Appropriate Application

separate ventilated enclosure or vented fume hood should be used with a remote blower ducted to the outside.

No exceptions are permitted, as the impeller life span will be limited with acid use.

NOTE: Low level acids can be used with the XPert Filtered

Balance Station, which uses a remote blower.

42

CHAPTER6

MAINTAININGYOUR

FILTEREDENCLOSURE

Monitoring airflow and changing the filters is the primary maintenance required. Decontamination may be required and is reviewed in Chapter 6. Certification and recertification is reviewed in Chapter 6.

Review this chapter on maintenance for the following:

1.Routine Maintenance.

2.Decontamination.

3.Determination of when to replace the HEPA filters.

4.How to install a new HEPA filter with the bag-in/bag-outprocedure on XPert Filtered Balance Systems & Stations.

5.HEPA filter leak test.

6.Speed control adjustment and setting the inflow face velocity.

7.Operating and calibrating the airflow monitors.

8.Determination of when to replace Odor Control carbon filters and how to replace.

9.Calculating Odor Control carbon filter life.

10.Initial certification.

11.Re-certification.

12.Fluorescent light replacement.

13.Motorized impeller replacement.

14.Speed control replacement.

43

Chapter 6: Maintaining Your Filtered Enclosure

Routine Maintenance Schedule

HEPA

CARBON

CARBON

Weekly

Wipe down the interior surfaces of the enclosure with a disinfectant or cleaner, depending upon the usage of the unit and allow to dry.

Using a damp cloth, clean the exterior surfaces of the enclosure, particularly the front and top to remove any accumulated dust.

Operate the exhaust system, noting the airflow velocity through the enclosure using a source of visible smoke. Airflow monitors are recommended for constant monitoring.

Monthly (or more often as required)

Determine the actual face velocity through the sash opening of the enclosure where the average reading should be at the specified velocity. (Use calibrated thermal anemometer or other approved apparatus). Airflow alarms are recommended for constant monitoring.

The enclosure rear baffle should be checked for any blockage to ensure that the enclosure is maintaining proper airflow.

All weekly activities.

Check face velocity. Increase speed control or change HEPA filter when face velocity of the enclosure drops below the recommended speed for your facility or if the airflow alarm monitor alerts you. Airflow monitors are recommended.

While the enclosure is filled with the contaminant, test filter condition on Odor Control carbon filters using the appropriate gas detector tube at intervals of 20% of the total estimated time. The exception to the 20% recommendation is formaldehyde or any carcinogen or suspected carcinogen. These hazardous chemicals must be checked at least every 10% of the total estimated time. Gas detector tubes for the specific chemicals that are being used in the enclosure can be obtained from your laboratory supply dealer.

Replace Odor Control carbon filters when chemical breakthrough is indicated by odor, time, detector tube, or for some chemicals, analytical instrumentation. See “Replacing Odor Control Carbon Filters” section of this manual in Chapter 6.

44

Chapter 6: Maintaining Your Filtered Enclosure

Annually

Replace the fluorescent lamps.

Have the enclosure validated by a qualified certification technician. See Certification and Recertification in Chapter 6.

All monthly activities.

Decontamination

When used in conjunction with biohazards, the XPert Filtered Balance System and XPert Filtered Balance Station should be decontaminated with formaldehyde gas before:

maintenance work in contaminated areas

HEPA filter changes

moving the cabinet to a new location

changing research programs

after a gross spill of biohazardous material

The procedures for performing a gaseous decontamination are thoroughly outlined in the U.S. Department of Health, Education and Welfare booklet entitled Formaldehyde Decontamination of Laminar Flow Biological Safety Cabinets, available from NIH, Division of Safety, Bethesda, MD 20892, call301-496-2801

Determination of when to Replace

HEPA Filters

The HEPA filters in the filtered enclosures gradually accumulate airborne particulate matter and powders from the enclosure and room. The rate of accumulation will depend upon the cleanliness of the room air, the amount of time the enclosure is operating, and the nature of work being done in the enclosure. In typical installations and usage, the HEPA filters will last two to five years before requiring replacement. Replace HEPA filters when face velocity drops below the recommended 60-80fpm velocity, and the speed control is adjusted to full speed. Replace HEPA filters if it fails the HEPA Filter Leak Test in Chapter 6.

45

Chapter 6: Maintaining Your Filtered Enclosure

How to Install a New HEPA Filter with the Bag-In/Bag-OutProcedure for XPert Filtered Balance Systems and Stations

The XPert enclosures include a true bag-in/bag-outfilter disposal system for safely removing the HEPA filter and protect the worker from toxic powders and particulates. See Figures6-1for the Bag-In/Bag-OutProcedure. For your safety, wear appropriate personal protective equipment during the change of HEPA filters. If working with biohazardous materials, use the decontamination procedure outlined in Chapter 6. (Consult your Safety Officer before performing filter changes).

1.With the enclosure OFF, remove the front panel secured by two screws on top of the enclosure.

2.Remove the bungee cords and retaining strap on the bag and extend it out. The retaining strap provides an extra level of safety even though the enclosure is under negative pressure when the blower is on.

3.Loosen the two filter clamp bolts with a 9/16" socket securing the HEPA filter. See Figure 4-1and4-2.

4.Place both arms in the rear gloves of the bag, and carefully draw the HEPA filter out of the enclosure. Rest the HEPA filter on the floor, table or cart. Remove arms from bag gloves.

5.Create two seals between the enclosure bag access port and the old HEPA filter. Seals can be heat sealed or sealed with tie wraps. Cut off the bag between the two seals and leave the bag stub on the access port to the enclosure.

6.Place the new HEPA filter in the new bag. Then place the new bag and new HEPA filter over the old bag stub and onto the enclosure access port.

7.Carefully remove the old bag stub using the single glove near the access port. Reattach the retaining strap on the perimeter of the new bag at the enclosure access port.

Draw the old bag stub into the single glove and turn the glove inside out. Double seal this glove and cut off the glove with the contaminated bag stub inside.

8.Carefully install the new HEPA filter and uniformly tighten the two filter clamp bolts until the HEPA filter gasket is compressed 50%.

46

Chapter 6: Maintaining Your Filtered Enclosure

9.Carefully fold and roll the new bag in four-inchpleats and push the bag into the access port. Reinstall the retaining strap and bungee cords. Turn the enclosure ON to draw a vacuum on the bag. Reinstall the front panel.

Figure 6-1

Bag-In-Bag-OutHEPA Filter Changing Procedure Diagram &

Filter Leak Test Diagram

HEPA Filter Leak Test

Purpose

After installing the new HEPA filter, the HEPA filter should be leak checked. This test is performed to determine the integrity of the HEPA filter, the filter housing, and the filter mounting frames. Leak testing is to be done by a qualified technician with calibrated equipment. Remove the top perforated exhaust cover by using a Phillips screwdriver to unfasten the (2) screws used to secure (2) clips. See Figure 6-1.The filter passes the leak test at .01% or better. Reference Leak Testing and Photometer scanning from the Institute of Environmental Services(IES-RP-CC001.3)

HEPA

47

Chapter 6: Maintaining Your Filtered Enclosure

Apparatus

1.An aerosol photometer ATI model 2D, 2E, 2G or equivalent. Air Techniques Hamilton Associates inc. 11403 Cron Ridge Dr. Owings Mills, MD 21117

2.One aerosol generator of the Laskin nozzle(s) type. An aerosol of mineral oil or suitable liquid shall be created by flowing air through it. The compressed air supplied to the generator should be adjusted to a pressure of 10± 1 psig. during operation. Air Techniques Inc. Model TDA-4A or equal. One nozzle at 10 psig is (67.5 cfm x 100ug/l)/(Vol. of air), For the 2' at 90 fpm or 130 cfm, one nozzle @10 psig is 13,500/130 cfm = 52 ug/l. For the 3' at 90 fpm or 200 cfm, one nozzle @ 10 psig is 34 ug/l. For the 4' at 90 fpm or 265 cfm, one nozzle at 10 psig is 26 ug/l.

3.Mineral oil (Catalog #1491400).

4.Sampling Nozzle, Rectangular 1/2" x 3-1/4", Air Techniques, Inc.

Procedure

For the ATI 2G Photometer

1.Turn on the photometer and allow it to operate for a minimum of 5 minutes. Leave the valve in the “CLEAR” setting.

2.Press the “ENTER” keypad. Press the “REF” keypad.

3.The display will display “P1” for approximately 1 second, and then display a numerical value.

4.Using the “^” or “ν” keypads, respectively, increase or decrease the numerical value until it equals 52 (2'), 34 (3'). 26 (4') for the enclosure at 90 fpm inflow velocity.

5.Press the “ENTER” Keypad. The photometer will scan for 15 seconds, and then the “0” keypad will flash. Press the “Enter” keypad. The unit will scan for 5 seconds, the display will read “0000,” and the unit will sound a confirming tone.

6.Set the valve to “DOWNSTREAM.” Place the palm of your hand over the sampling port of the pistol. There should be a strong vacuum at this port. If the vacuum is weak, contact Air Techniques Hamilton Associates.

7.Turn the enclosure on and let it operate for a minimum of 5 minutes.

48

Chapter 6: Maintaining Your Filtered Enclosure

8.If necessary, adjust the speed control of the enclosure to maintain the following airflows at 90 fpm; 2' (130cfm), 3' (200 cfm, 4' (265 cfm.)

9.Position the aerosol generator discharge in the intake of the baffle inside the enclosure.

10.Start the aerosol generator (Pressure to be +/- 1 PSIG). Ensure that one Laskin nozzle is in the “open” position.

11.Allow the generator to operate for a minimum of 15 seconds. For all integral motorized impeller models, scan the downstream exhaust side of the HEPA filter by passing the sampling nozzle of the gun in slightly overlapping strokes over the entire surface the filter, with the sampling port not more than 1 inch from the surface of the filter media. Scan the entire periphery of the filter and the gasket between the filter frame and the enclosure frame. Scanning shall be done at a traverse rate of not more than 2 inches per second.

NOTE: For the XPert Filtered Balance Station, place the sampling nozzle in the center of the remote blower exhaust.

Acceptance

Aerosol penetration shall not exceed 0.01 percent measured by the photometer

Setting the Inflow Face Velocity with the Speed Control Adjustment

1.Remove the front panel by loosening the (2) Phillips screws on top that secure the front panel.

2.The speed control is located on the electrical subassembly located behind the switched control panel and below the front panel. See Figure 6-1.

3.Adjust the speed control with a small Phillips screwdriver by turning the screw counterclockwise to increase blower speed or clockwise to decrease the blower speed. The speed control is very sensitive, so proceed with caution.

4.Measure the inflow velocity per the averaging technique outlined in Chapter 3 and adjust the speed control slowly for the desired speed. Allow the speed to stabilize and remeasure the inflow velocity to confirm.

5.Replace the front panel and tighten the screws.

XPERT

FILTERED BALANCE SYSTEM

49

Chapter 6: Maintaining Your Filtered Enclosure

 

 

Calibrate and Operate the Airflow

 

 

Monitors

 

OPTION

Guardian Airflow Monitor (LED Monitor)

 

Refer to Figure 6-2for operation and calibration.

 

 

Labconco Airflow Monitor / Airflow Switch Operation

 

 

 

 

The Guardian Airflow Monitor (LED) consists of a circuit board

 

 

and an airflow switch. This switch indicates airflow as safe or low.

 

 

It does not provide an actual face velocity, but a small setscrew in

 

 

the back of the sensor can adjust the airflow level that it classifies

 

 

as “good/safe” or “low/alert.”

 

 

The circuit board provides power to the sensor and also contains a

 

 

“safe (green)” and “alert (red)” airflow LED indicators, as well as

 

 

a “SILENCE ALARM” button to quiet the audio alarm. When

 

 

first powered up, the PCB will light both red and green LED

 

 

indicators and sound the alarm to indicate it is working. After 5

 

 

seconds, the air monitor will indicate either good or bad airflow

 

 

based on what the connected airflow switch detects. For low

 

 

airflow, the unit will wait for 10 seconds of bad indications before

 

 

it sounds both the audio alarm and the red “alert” LED indicator.

 

 

If the “SILENCE ALARM” button is pressed, the audio alarm will

 

 

be silenced, but the red “alert” LED will remain on. The alarm is

 

 

silenced indefinitely unless an airflow change is detected. If safe

 

 

airflow is later detected for 10 seconds, the green “safe” LED will

 

 

be lit and the “alert” (red) LED will be shut off. At any time the

 

 

airflow is safe/good, one can press the SILENCE ALARM test

 

 

button and the audio alarm and the red LED will turn on as long as

 

 

this button is held down. The PCB has also a two-pinconnector

 

 

for use as an external output with isolated relay contacts that close

 

 

when the red/alert LED is lit (low airflow). These relay contacts

 

 

are not affected by the “SILENCE ALARM” button.

 

 

The PCB is mounted behind the front panel using standoffs and an

 

 

appropriate label is used to highlight the “SILENCE ALARM”

 

 

button with clear areas for the red and green LED’s. No holes to

 

 

allow sound to be broadcast louder are necessary.

 

 

The PCB can be prepared as a factory special with an additional

 

 

connector for the following external inputs, and having the

 

 

following possible functions:

50

Chapter 6: Maintaining Your Filtered Enclosure

External Alarm allows an external signal to sound the alarm, such as a sash open switch, or a “fail” signal from the building airflow system.

Alarm Disable allows an external signal to prevent a “low” airflow alarm from occurring.

Night Setback allows an external signal to prevent a “low” airflow alarm from occurring (not any different from Alarm Disable above other than the terminology.)

Contact Labconco for ordering information on this special PCB.

Calibration

1.Ensure the flow switch and alarm circuit board are installed and operational.

2.Allow the enclosure to operate for at least two minutes.

3.If factory installed, the monitor will alarm at 60±10 fpm with the inflow velocity set at 90±10 fpm.

4.To change the factory setting, set the inflow velocity required by your Safety Officer to the desired alarm condition using the speed control adjustment procedure outlined in Chapter 6.

5.Once the alarm condition is set, use a small screwdriver to turn the adjustment screw on the airflow switch counterclockwise (facing the screw) until the “low” airflow red LED lights and the audible flow alarm sounds.

6.Adjust the inflow velocity to the nominal operating point required by your Safety Officer.

7.Over time the HEPA filter will load and eventually slow the inflow velocity. Once the alarm condition is met, simply increase the speed control outlined in Chapter 6 or replace the HEPA filter if the speed control is maximized.

8.The table below lists typical alarm conditions based on normal operating conditions. Typical alarm conditions are set at face velocities of 10 to 30 feet per minute below the normal operating conditions due to supply air and exhaust air fluctuations, as well as room air cross drafts. Consult your Safety Officer for proper operating speeds.

Enclosure Operating In-Flow

Alarm Condition Set Point

Speed

Speed

100 ± 10 fpm

70-90fpm

90 ± 10 fpm

60-80fpm

80 ± 10 fpm

50-70fpm

70 ± 10 fpm

50-60fpm

60 ± 10 fpm

50 fpm

51

Chapter 6: Maintaining Your Filtered Enclosure

Figure 6-2

Guardian Airflow Monitor (LED) with Airflow Switch

Option

Guardian Digital 1000 Airflow

Monitor

Refer to Figure 6-3for operation and calibration. Refer to the separate Labconco 1000 Alarm Manual for detailed information.

52

Chapter 6: Maintaining Your Filtered Enclosure

Operation

The Guardian Digital Airflow Monitor consists of the airflow sensor, the Alarm Unit, and the 15 VDC power supply. For 115V operation the alarm unit is powered by plugging the power supply into the factory-prepareddigital airflow monitor socket. For 230V operation, the Alarm Unit is powered by plugging the power supply into a building outlet. The alarm has “Enter,” “+,” and“-”buttons to program the monitor. There is also a green LED “SAFE,” yellow LED “CAUTION,” and red LED “LOW” with audible alarm for airflow conditions. The audible alarm can be permanently muted if desired. The Guardian Digital 1000 Airflow Monitor displays a face velocity value, provides an RS232 communications port to a PC or building computer system, can be configured for external input connections such as night setback or external alarm and provides up to three output relays that can be configured. For complete detailed information, please refer to the separate Labconco 1000 Alarm User’s Manual provided with the enclosure.

Digital 1000 Calibration

The filtered enclosure comes factory calibrated with the monitor alarm at 60 ± 10 fpm with the inflow velocity set at 90± 10 fpm. To change the calibration, review the Labconco 1000 Alarm User’s Manual that comes with the enclosure. To successfully calibrate, it will be necessary to change the face velocity by adjusting the airflow exhaust volume with the speed control. The exhaust volume can be adjusted with the speed control or by using an adjustable damper for outside exhaust. NOTE: For accurate calibration, the front panel needs to be in place for each low calibration and high calibration set points to simulate real usage.

Typical calibration conditions are set at face velocity air sample differences of a least 50 feet per minute. However, the airflow monitor is factory set and calibrated with a difference of at least 20 fpm and can be changed in the CAL CONFIG MENU by changing the “lower/higher air sample difference.” If changed, then also change the “sensor difference” in CAL CONFIG MENU from 10% to 3%. To change the red “Low” airflow alarm and yellow “CAUTION” adjust the values in CAL CONFIG MENU. Set “WARNING or CAUTION” air reset to 3 fpm. To complete the CAL CONFIGURATION, be sure to enter “Done.”

53

Chapter 6: Maintaining Your Filtered Enclosure

To start the calibration, use the Labconco 1000 Manual and enter the “CALIBRATIION” mode on the display. Follow the instructions on the display and alter the low and high exhaust volumes with the speed control. The following suggested inflow face velocity speeds are recommended to successfully calibrate. Typical low air alarms are set 10-30fpm below operational speeds. Typical yellow cautions are set3-10fpm above the red low air alarm. Be sure to enter “Done” after completing the calibration in “SETUP.” Once completed, go to “RUN” and hit “ENTER.”

 

Nominal Enclosure

Low

High

Low Air Alarm

Operating In Flow

Calibration

Calibration

Set Point

Speed

Set Point

Set Point

50 fpm

60 fpm

50-60fpm

100-120fpm

60-70fpm

80 fpm

50-70fpm

100-140fpm

70-90fpm

100 fpm

60-80fpm

110-140fpm

 

 

 

 

Factory Settings

 

 

 

60 ± 10 fpm

90 ± 10 fpm

60 ± 10 fpm

90 ± 10 fpm

54

Chapter 6: Maintaining Your Filtered Enclosure

Figure 6-3

Guardian Digital 1000 Airflow Monitor

55

Chapter 6: Maintaining Your Filtered Enclosure

Determination of When to Replace Odor Control Carbon Filters and How to Replace

The carbon filters MUST be replaced when anyone of the following two conditions are met:

1.The filtered enclosure outlet (exhaust) concentration approaches the inlet concentration, indicating filter saturation.

2.The odor in the work area becomes intolerable or the concentration of the chemical in the work area is greater than the TWA.

There are four means of determining when its time to change the carbon filters (not shown in the order of preference).

Odor - A person’s sensitivity to odor, tolerance of odor and their comfort level under odoriferous conditions vary with the individual. While odor is an indicator that chemicals are passing through the carbon filter, several points need to be understood:

Odor within the room is not necessarily an indication of saturation or hazardous exposure concentrations.

Odor can be used as a prompt to sample the chemical concentration on the exit side of the carbon filter.

Organic chemicals approved for use in the filtered enclosure have odors that are detectable before reaching the time weighted exposure limits.

Detection Tubes - Color change indicators can be used to measure the concentration of the chemical at the exit side of the carbon filter or in the outlet exhaust. A kit including syringe pump and flexible tubing can be purchased as an accessory from Labconco (Catalog # 6924900). Labconco Customer Service Representatives are supplied with detector tube catalog numbers, as well as telephone numbers to direct you to where to purchase these items.

For Organic, Formaldehyde and Ammonia, chemical specific detector tubes should be purchased when installing fresh filters. Each kit contains instructions on how many strokes of the syringe are required to obtain the stated sensitivity. The sampling syringe is connected to the filtered enclosure exhaust. Connect the syringe to the detector tube while the system is running and pull the air through the tube with the syringe. Each stroke of the

56

Chapter 6: Maintaining Your Filtered Enclosure

syringe represents a 100-mlsample and corresponds to the number of strokes necessary to give the indicated color changes. Due to the wide variety of organics and varying TWA’s, it is recommended that specific detector tubes be purchased directly from Sensidyne, Draeger or your laboratory supply dealer. Alternate detector pumps can also be purchased from your laboratory supply dealers. The vast majority of detector tubes available start measuring at the TWA. When a user observes a color change in the tube, they should replace the filter immediately. If no detector tube for your specific chemical is available, other means of detection must be used.

Time - For applications that have very consistent inlet concentrations and operating time, “Time” can be used to anticipate saturation or TWA levels based on prior experience. However, this does not replace the need for sampling. Consult Labconco technical specialist for an estimate of carbon filter life based on chemical usage. Detector tubes, or analytical instrumentation shouldalways be used to determine concentrations in the carbon filter. It is recommended that the carbon filters be checked with detector tubes or other means at intervals of 20% of the total estimated filter life. The exception to the 20% recommendation is formaldehyde and any carcinogen or suspected carcinogen. These more hazardous chemicals must be checked at least every 10% of the total estimated time.

Analytical Instrumentation - This is the most accurate means of measuring concentrations ofany chemical. It is the method of choice when no detector tubes are available or the tubes are not sensitive enough to measure at the TWA concentration for the chemical. This method is also to be used to determine saturation when the chemical concentration is below the measurement range of detector tubes.

Odor Control Carbon Filter Replacement Procedure – See

Figures 4-1and4-2for Carbon Filter Replacement.

1.The carbon filters are replaced by first removing the two screws, which hold the clips to secure the upper diffuser screen. Remove the screws, clips and upper diffuser screen.

2.Remove the carbon filter in a careful way to avoid the flow switch and HEPA filter.

57

Chapter 6: Maintaining Your Filtered Enclosure

3.Re-installthe new carbon filter with the gasket down. Replace the upper diffuser screen, clips and two screws.

4.The weight of the carbon filter with the gasket down will compress the gasket.

Calculating Odor Control Carbon Filter Life

Labconco developed a modeling program to estimate the filter life for typical carbon filters. Since filter life is dependent on the chemical used, the airflow, filter size, and the dwell time, refer to the Chemical Guide for the Paramount® Filtered Enclosure. The estimated life for Odor Control carbon filters for the filtered enclosures is conservatively calculated at 50% or half of the published values for the Paramount in the Chemical Guide. For example, if you use isopropyl alcohol to disinfect and use approximately 100 ml per week during 2 hours of use per day then follow these steps to calculate the concentration in parts per million (ppm).

Steps for Calculating PPM and Filter Life

1.Determine the amount of the proposed chemical lost to evaporation over a given amount of time. For example, if you use isopropyl alcohol and lose approximately 100 ml per week during 2 hours of use per day.

2.Convert the amount lost into ml/min. For this example:

100 ml X

1 week X

10 hours =

100 ml lost

=.17 ml/min

week

10 hours use

600 minutes

600 minutes

 

3.Convert ml/min to PPM by multiplying ml/min by the conversion factor found in the second to the last column on the right. For isopropyl alcohol .17 x 41 = 7.0 PPM.

4.Find the PPM value on the chart that comes closest to the value you just calculated in step #3. In this example, round up to 10 PPM, which is close to the calculated 7.0. We may approximate the filter life to be around 155 hours of actual use, but use 50% of this for the Odor Control filters or 78 hours.

5.Insert the estimated filter life into the estimated usage to determine how long filters will last.

78 hours filter life

=7.8 weeks before filter saturation

10 hours per week use

 

58

Chapter 6: Maintaining Your Filtered Enclosure

Formaldehyde only

For formaldehyde, use 10% of the impregnated carbon weight. Formalin is 37% formaldehyde by weight. The density of formalin is 1.08 g/ml.

 

 

Pounds of

Adsorbed weight of

Adsorption

Model

 

Formasorb

Formaldehyde

Volume of

Size

Filter Size

Carbon

 

Formalin

2'

18 x 18 x 1

7.0

0.7 lbs./318g

796 ml

3'

30 x 18 x 1

12.0

1.2 lbs./545g

1364 ml

4'

42 x 18 x 1

16.8

1.68 lbs./763g

1910 ml

Ammonia only

For ammonia, use 10% of the impregnated carbon weight. Assume use of a 50% solution of ammonia for these calculations.

 

 

Pounds of

 

Adsorbed

 

 

Ammonasorb

 

Volume of 50%

Model

 

II Carbon

Adsorbed weight of

Ammonia

Size

Filter Size

 

Ammonia

Solution

2'

18 x 18 x 1

9.2

0.92 lbs./418g

836 ml

3'

30 x 18 x 1

13.5

1.35 lbs./613g

1226 ml

4'

42 x 18 x 1

18.9

1.89 lbs./859g

1718 ml

Initial Certification

The filtered enclosure has been certified at the factory for an inflow velocity of 90±10 fpm along with the HEPA Filter Leak Test. The filtered enclosure should be certified for the proper inflow velocity required by your Safety Officer. It is also a conservative recommendation to perform the HEPA Filter Leak Test again should there be any damage caused during transport.

Re-Certification

Under normal operating conditions, the enclosure should be recertified at least annually if serviced. The certifier should perform the following tests.

Inflow Velocity Test

HEPA Filter Leak Test

In addition, the following tests should also be performed at the user’s discretion:

59

Chapter 6: Maintaining Your Filtered Enclosure

Measure of Line Voltage and Current

Smoke Test to determine proper airflow patterns

Lighting Intensity Test (when appropriate)

Noise Level Test (when appropriate)

Vibration Test (when appropriate)

Fluorescent Light Replacement

1.Disconnect the power.

2.Locate the small light reflector located under the control panel shown in Figure 6-2and Figure6-3.

3.Remove the light reflector support by removing two Phillips screws on the bottom of the light reflector.

4.Rotate and remove the old fluorescent lamp.

5.Reinstall the new fluorescent lamp and light reflector in reverse order.

6.Power the unit up and try the new fluorescent lamp.

XPERT

FILTERED BALANCE SYSTEM

Motorized Impeller Replacement

The motorized impeller must be replaced as a complete unit. When the motorized impeller is replaced, the capacitor may also be replaced. See Appendix A for Replacement Parts Diagram. See Figure 6-5for an isometric view of the motorized impeller plenum assembly. The HEPA filter rests on top of the motorized impeller assembly.

1.Wear appropriate personal protective equipment to decontaminate the filtered enclosure and then unplug from the electrical outlet.

2.Remove HEPA filter per the HEPA filter removal procedure outlined in this chapter.

3.Consult the wiring diagram in Appendix C of the manual and disconnect all the wires of the motorized impeller. Be sure to connect wires on the new motor in the same way the old motor was wired.

4.Remove four screws in the motor bracket that hold motor bracket to the supports with the vibration isolation mounts. Remove the motor and bracket.

!WARNING: High-speedblower. Never operate impeller with housing off.

5.Replace the capacitor with a new one of equal voltage and capacity.

60

Chapter 6: Maintaining Your Filtered Enclosure

6.Reassemble the new motorized impeller by reversing the assembly steps.

Figure 6-4

Motorized Impeller Replacement

61

Chapter 6: Maintaining Your Filtered Enclosure

XPERT

FILTERED BALANCE SYSTEM

Speed Control Replacement

1.Remove the bracket that the speed control is attached to. See Figures 6-1,6-2and6-3.

2.Remove the two screws holding the speed control using a Phillips screwdriver. Refer to Appendix A for Replacement Parts Diagram.

3.Disconnect all wires leading to the speed control. Connect wires on new speed control in the same position as the old speed control.

4.Reassemble to the system in the same position and with the same screws that were removed earlier.

62

CHAPTER7

ACCESSORIZING AND

MODIFYINGYOUR

FILTEREDENCLOSURE

There are several ways to accessorize and modify the filtered enclosure for your individual requirements. These include the addition of accessory work surfaces, airflow monitors; exhaust transition kits, remote blowers, exhaust dampers, filters, storage cabinets and utility shelf kit.

1. Work Surfaces

An optional dished work surface is available to attach to the filtered enclosure.

Dished work surfaces are contoured to fit the dimensions of the filtered enclosures to contain spills. Epoxy is chemical resistant. See Figure 3-1for installation.

Catalog #

Description

Dimensions (W x D x H)

3909900

Black, 2-footwide

24" x 29" x 1"

3909901

Black, 3-footwide

36" x 29" x 1"

3909902

Black, 4-footwide

48" x 29" x 1"

3909903

Gray, 2-footwide

24" x 29" x 1"

3909904

Gray, 3-footwide

36" x 29" x 1"

3909905

Gray, 4-footwide

48" x 29" x 1"

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Chapter 7: Accessorizing and Modifying your Filtered Enclosure

2. Guardian™ 1000 Digital Airflow Monitor or Guardian™ LED Airflow Monitor

The Guardian Digital 1000 Airflow Monitor or Guardian LED Airflow Monitor allows you to continuously monitor airflow through the enclosure. Either monitor is usually provided with the XPert enclosures.

Description

Order Part #’s

Individual Parts Required

Guardian Airflow Monitor

 

 

115V or 230V

 

 

 

1 ea.

3811500

Airflow Monitor Printed Circuit Board

1 ea.

3910700

Airflow Sensor w/ Connector

2 ea.

1885405

#6-32x .31" Phillips machine screw to

 

 

mount Airflow Monitor Circuit Board

 

 

 

2 ea.

1891808

#6-32x .50" Phillips thread cutting screw to

 

 

mount Airflow Sensor

 

 

 

 

 

 

Guardian Digital 1000

 

 

Airflow Monitor

 

 

115V

1 ea.

3908500

115V Guardian Digital Monitor, Airflow

 

 

Sensor, Sensor Cable, and 15 VDC power

 

 

 

supply

230V

1 ea.

3908501

230V Guardian Digital Monitor, Airflow

 

 

Sensor, Sensor Cable, and 15 VDC power

 

 

 

supply

Add appropriate Front Panel with cutout to mount Digital

1000 Airflow Monitor

 

1 ea.

3904803

2' Front Panel w/ cutout

or

 

 

 

1 ea.

3904804

3' Front Panel w/ cutout

or

 

 

 

1 ea.

3904805

4' Front Panel w/ cutout

NOTE: The cutout can also be made with a reciprocating saw and a 1/8" diameter bit. The centerline of the cutout is located 3.3" from the left side and 4.2" from the bottom. The 1/8" mounting holes are spaced 4.38" apart top to bottom and centered over the cutout. The cutout dimensions are 2.43" wide by 4.13" tall.

3.Exhaust Transition Kits for Ducting to Outside

Exhaust transition connects to the XPert Filtered Balance System with integral motorized impellers from the top so the duct can be routed up and outside the building. The transition is available for 6" PVC duct. The transition should be sealed to the top of the enclosure with silicone sealant to prevent leaks. See Figure 3-3.

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Chapter 7: Accessorizing and Modifying your Filtered Enclosure

Order the following:

Part

Description

3924400

2' Exhaust Transition Kit

3924401

3' Exhaust Transition Kit

3924402

4' Exhaust Transition Kit

4. Remote Blowers

Has a 1/4 hp direct drive motor and corrosion-resistantepoxycoated steel housing and wheel with blower inlet of 6.00" ID. Outlet dimensions are 4.25" x 7.38" OD.

CFM @ Static Pressure-Inchesof H2O

 

S.P.

0.0"

 

0.125"

0.25"

0.50"

0.75"

 

0.87"

 

 

CFM

595

 

560

515

420

300

 

167

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Catalog

Description

 

 

 

 

 

Shipping Wt.

 

 

#

 

 

 

 

 

(lbs./kg.)

 

 

 

 

 

 

 

 

 

 

 

 

4863500

Remote Blower, 115 V, 60 Hz. 4.4 amps

 

35/16

 

 

4863501

Remote Blower, 115/230 V, 50 Hz, 5.6/2.8 amps

 

35/16

 

 

7053501

Explosion-ProofRemote Blower, 115 V, 60 Hz,

 

40/18

 

 

4.4 amps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 7-1

65

Chapter 7: Accessorizing and Modifying your Filtered Enclosure

5.

Exhaust Dampers

 

Exhaust dampers allow adjustments required to maintain

 

proper airflow for roof-mountedblowers or house exhaust

 

systems. This would primarily be useful only for the XPert

 

Filtered Balance Station, which does not have an integral

 

blower, but does have a 6" nominal exhaust outlet.

 

 

 

 

Catalog #

Description

 

3924000

6" Epoxy Coated Steel In-Lineadjustable damper

 

4724200

6" PVC In-lineadjustable damper

6.

Accessory Filters

HEPA Filter

HEPA Filter is 99.99% efficient on particles 0.3 micron.

Width

Catalog #

Size

2'

3707900

18" x 18" x 3.31"

3'

3707901

30" x 18" x 3.31"

4'

3707902

42" x 18" x 3.31"

HEPA Filter Bag-In/Bag-OutBag

The bag helps contain hazardous particulate matter during filter changing operations.

Width

Catalog #

Size

2'

3776003

48" Circum. x 54" lg.

3'

3776004

73" Circum. x 96" lg.

4'

3776005

96" Circum. X 96" lg.

Odor Control Carbon Filter

Provides granular activated carbon or impregnated carbon used for Odor Control applications on integral motorized impeller models exhausted back into the room.

Filter Classification and Size

Catalog #

X Pounds

2' Organic 18 x 18 x 1

3937200

5.5 lbs. activated

3' Organic 30 x 18 x 1

3937300

9.2 lbs. activated

4' Organic 42 x 18 x 1

3937400

12.9 lbs. activated

 

 

 

2' Formaldehyde 18 x 18 x 1

3937201

7.0 lbs impregnated

3' Formaldehyde 30 x 18 x 1

3937301

12.0 lbs. impregnated

4' Formaldehyde 42 x 18 x 1

3937401

16.8 lbs. impregnated

 

 

 

2' Ammonia & Amines 18 x 18 x 1

3937202

8.0 lbs. impregnated

3' Ammonia & Amines 30 x 18 x 1

3937302

13.5 lbs. impregnated

4' Ammonia & Amines 42 x 18 x 1

3937402

18.9 lbs. impregnated

66

Chapter 7: Accessorizing and Modifying your Filtered Enclosure

7.

Storage Cabinets

SOLVENT

 

 

ACID

 

 

 

 

 

 

 

Size/Description

 

Dual Doors

Right Hinge

 

Left Hinge

Dual Doors

Right Hinge

 

Left Hinge

48"

 

9902000

-

 

-

9901000

-

 

-

36"

 

9902100

-

 

-

9901100

-

 

-

30"

 

9902200

-

 

-

9901200

-

 

-

24"

 

-

9902300

 

9902400

-

9901300

 

9901500

18"

 

-

-

 

-

-

9901400

 

9901600

12"

 

-

-

 

-

-

-

 

-

48" w/Self-ClosingDoors

9903000

-

 

-

-

-

 

-

36" w/Self-ClosingDoors

9903100

-

 

-

-

-

 

-

30" w/Self-ClosingDoors

9903200

-

 

-

-

-

 

-

24" w/Self-ClosingDoors

-

9903300

 

9903400

-

-

 

-

24" ADA

 

-

9906000

 

9906100

-

9905000

 

9905200

24" ADA w/Self-Closing

 

-

9906200

 

9906300

-

-

 

-

Doors

 

 

 

 

 

 

 

 

 

18" ADA

 

-

-

 

-

-

9905100

 

9905300

12" ADA

 

-

-

 

-

-

-

 

-

 

 

 

 

 

 

 

 

 

 

 

 

STANDARD BASE

 

VACUUM PUMP

 

Size/Description

 

Dual Doors

Right Hinge

 

Left Hinge

Dual Doors

Right Hinge

 

Left Hinge

48"

 

9900000

-

 

-

-

-

 

-

36"

 

9900100

-

 

-

-

-

 

-

30"

 

9900200

-

 

-

-

-

 

-

24"

 

-

9900300

 

9900600

-

-

 

-

18"

 

-

9900400

 

9900700

-

9907000

 

9907100

12"

 

-

9900500

 

9900800

-

-

 

-

48" w/Self-ClosingDoors

-

-

 

-

-

-

 

-

36" w/Self-ClosingDoors

-

-

 

-

-

-

 

-

30" w/Self-ClosingDoors

-

-

 

-

-

-

 

-

24" w/Self-ClosingDoors

-

-

 

-

-

-

 

-

24" ADA

 

-

9904000

 

9904300

-

-

 

-

24" ADA w/Self-Closing

 

-

-

 

-

-

-

 

-

Doors

 

 

 

 

 

 

 

 

 

18" ADA

 

-

9904100

 

9904400

-

-

 

-

12" ADA

 

-

9904200

 

9904500

-

-

 

-

8.

Utility Shelf Kit

 

 

 

 

 

 

 

Labconco offers a utility shelf kit part number 3925000 consisting of three shelves to hold items inside the enclosure. One shelf may be used for the printer, one shelf for spatulas and weigh brushes, and one miscellaneous shelf. The shelves hang from slots in the rear baffle.

67

Chapter 7: Accessorizing and Modifying your Filtered Enclosure

68

CHAPTER8

TROUBLESHOOTING AND

SERVICEROPERATING

LOG

Refer to the following table if your filtered enclosure fails to operate properly. If the suggested corrective actions do not solve your problem, contact Labconco for additional assistance.

PROBLEM

CAUSE

CORRECTIVE ACTION

 

 

 

Contaminants outside

Improper user

See “Certifying the Enclosure” Chapter

of enclosure.

techniques for the

3 and “Safety Precautions” Chapter 4

 

enclosure.

sections in the manual. (Ref. Appendix

 

 

D).

 

Restriction of the

Remove obstruction to ensure that all

 

baffle air slots or

air slots and the exhaust outlet are

 

blockage of the

unobstructed.

 

exhaust outlet.

 

 

External factors are

See “Location Requirements” Chapter

 

disrupting the

2, “Certifying the Enclosure” Chapter

 

enclosure airflow

3, and “Safety Precautions” Chapter 4

 

patterns or acting as a

sections of this manual. (Ref. Appendix

 

source of

D).

 

contamination.

 

 

Enclosure has

Have enclosure certified and check

 

improper face

exhaust system. Check HEPA filters for

 

velocity.

loading. Adjust enclosure speed

 

 

control. Enclosure should have an

 

 

average face velocity of 60-100fpm for

 

 

weighing procedures and 75-105fpm

 

 

for biohazardous procedures.

69

Chapter 8: Troubleshooting

 

PROBLEM

 

CAUSE

CORRECTIVE ACTION

 

Blower won’t

 

Unit not plugged

Plug the enclosure into appropriate

 

operate.

 

into outlet.

electrical service.

 

 

 

Circuit breaker(s)

Reset circuit breaker.

 

 

 

or Ground Fault

 

 

 

 

Interrupter.

 

 

 

 

Blower wiring is

Inspect blower wiring.

 

 

 

disconnected.

 

 

 

 

Blower switch is

Replace switch.

 

 

 

defective.

 

 

 

 

Motorized impeller

Replace motorized impeller or blower.

 

 

 

or blower is

See Chapter 6.

 

 

 

defective.

 

 

Low face velocity

 

Enclosure sash not

Close sash to the lowest position.

 

or poor

 

closed.

 

 

containment of

 

 

 

 

contaminants.

 

 

 

 

 

 

HEPA filter

Replace HEPA filter or increase speed.

 

 

 

clogged.

 

 

 

 

Carbon filter loaded

Replace carbon filter.

 

 

 

with chemicals.

 

 

Blower and lights

 

Unit not plugged

Plug enclosure into appropriate

 

won’t operate.

 

into outlet.

electrical service.

 

 

 

Circuit breaker(s)

Reset or replace circuit breaker.

 

Lights do not work.

 

tripped.

 

 

 

Lamp not installed

Inspect lamp installation.

 

 

 

properly.

 

 

 

 

Lamp wiring

Inspect lamp wiring.

 

 

 

disconnected.

 

 

 

 

Defective lamp.

Replace lamp.

 

 

 

Light switch is

Replace light switch.

 

 

 

defective.

 

 

 

 

Defective electronic

Replace ballast.

 

 

 

ballast.

 

 

Airflow monitor

 

No power.

Power cable to circuit board is

 

malfunction.

 

No lights.

disconnected and needs to be

 

 

 

No display.

connected. Sensor cable needs to be

 

 

 

 

connected. Power supply is not plugged

 

 

 

 

into proper voltage; plug in power

 

 

 

 

supply. Verify that all airflow monitor

 

 

 

 

interface cables are connected. Check

 

 

 

 

fuses on enclosure.

 

 

 

No audible alarm.

Alarm has been temporarily silenced

 

 

 

 

using “SILENCE ALARM” or “enter”

 

 

 

 

buttons.

70

Chapter 8: Troubleshooting

PROBLEM

CAUSE

CORRECTIVE ACTION

Airflow Monitor

Wrong alarm set

Airflow monitor was not properly

Malfunction

point.

adjusted. Repeat calibration steps

(Continued)

 

outlined in this manual in Chapter 6

 

 

or in the supplied Digital 1000

 

 

Monitor Manual.

 

Constant audible

Check airflow and calibration of

 

alarm.

airflow monitor. See Chapter 6.

 

Continuous alarm.

Check the face velocity of the

 

 

enclosure as the airflow of the

 

 

system may have changed. If

 

 

incorrect, adjust the speed control to

 

 

increase face velocity. The HEPA

 

 

filter may have become loaded. If

 

 

face velocity is correct, calibrate the

 

 

airflow monitor outlined in this

 

 

manual in Chapter 6.

 

Monitor alarms; air

Lightly clean the airway with clean

 

way to airflow

air. Be careful not to touch sensitive

 

monitor sensor is

electrical components.

 

blocked by insects,

 

 

dust or debris.

 

 

Audible disable

An alarm condition must be

 

will not stay

continuously present before the

 

operational.

audible alarm can be silenced. If

 

 

flow conditions fluctuate near the

 

 

alarm set point, the airflow monitor

 

 

will automatically reset it. Action

 

 

should be taken to bring the

 

 

enclosure airflow into proper

 

 

operating parameters or adjust the

 

 

alarm set point lower.

71

Chapter 8: Troubleshooting

 

 

 

Service Operating Record Log

 

 

 

Customer Name

 

Model Number

 

 

 

 

Date Installed

 

Serial Number

 

 

 

Unit Location

 

 

 

 

 

 

 

 

 

 

 

 

Date

 

Comments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

72

APPENDIXA

FILTEREDENCLOSURE

COMPONENTSAND

REPLACEMENTPARTS

The components that are available for your filtered enclosure are listed. The parts shown are the most commonly requested. If other parts are required, please contact Product Service.

73

Appendix A: Replacement Parts

Item

Qty.

Part Number

Description

1

1

3911000

Glass, Side

2A

1

3911900

Glass, Sash 2'

2B

1

3911901

Glass, Sash 3'

2C

1

3911902

Glass, Sash 4'

3A

1

3911800

Sash Assembly, 2'

3B

1

3911801

Sash Assembly, 3'

3C

1

3911802

Sash Assembly, 4'

4A

1

3905600

Lower Air Foil, 2'

4B

1

3905601

Lower Air Foil, 3'

4C

1

3905602

Lower Air Foil, 4'

5A

1

3907400

Bracket, Air Foil R.H.

5B

1

3907401

Bracket, Air Foil L.H.

6A

1

3907500

Stop, Sash R.H.

6B

1

3907501

Stop, Sash L.H.

7A

1

6916500

Latch, Sash

7B

1

3906700

Bracket, Latch

7C

1

1927403

Spring, Compression Latch

7D

2

1893206

Screw, 8-32x .38" Lg. Phillips Pan S.S. Type F

8A

1

3776003

Bag, 2' – for Bag-In/Bag-Outon XPert

8B

1

3776004

Bag, 3' – for Bag-In/Bag-Outon XPert

8C

1

3776005

Bag, 4' – for Bag-In/Bag-Outon XPert

9A

2

1889316

Screw, 10-24x 1.00 PH Phil S.S.

9B

2

1912108

Washer, Plastic .194 ID. x .380 OD

9C

2

7868402

Bushing, Spacer .31 x .63

10

1.9 Ft

6913700

Wiper, Sash Seal

11A

2

1936800

Bushing, Heyco closed 1.50 Dia.

11B

2

1934601

Bushing, Heyco w/ Flex Shutter 1.50 Dia.

12A

1

3915401

Side Air Foil

12B

2

1889912

Screw, #6-32x .75" Oval Hd. Type F (S.S.)

13A

1

3907700

Reflector, Light 2'

13B

1

3907701

Reflector, Light 3'

13C

1

3907702

Reflector, Light 4'

13D

2

1889308

Screw, Mach. 10-24x .50 PH Phillips

14A

1

3708300

Lamp, Fluorescent 2' Enclosure (F15T8-SP35)

14B

1

9721902

Lamp, Fluorescent 3' Enclosure (F17T8)

14C

1

9721901

Lamp, Fluorescent 4' Enclosure (F25T8)

16A

1

3911700

Bracket, Right Reflector Support

16B

1

3911701

Bracket, Left Reflector Support

16C

4

1893108

Screw, #8 x 1/2 AB Hex Washer Head

74

Appendix A: Replacement Parts

Item

Qty.

Part Number

Description

17A

1

3918500

Wiring Harness Main, 115V

17B

1

3918600

Wiring Harness Main, 230V

18A

1

3811500

Guardian Airflow Monitor Printed Circuit Board

18B

2

1885405

Screw Mach #6-32x .31 PH Phil. S.S.

19

1

3926800

Label, Front XPert

20A

1

3910700

Airflow Switch

20B

2

1891808

Screw, Thread Cutting #6-32x .50 PH

21

Multiple

1905617

Nut, KEPS 10-24

22

2

1307000

Switch, Rocker (2 position)

23A

1 or 2

3904800

Front Panel, 2'

23B

1

3904801

Front Panel, 3'

23C

1

3904802

Front Panel, 4'

23D

1

3904803

Front Panel 2' with Digital Monitor Cutout

23E

1

3904804

Front Panel, 3' with Digital Monitor Cutout

23F

1

3904805

Front Panel, 4' with Digital Monitor Cutout

23G

2

4472400

Screw, Thread cut 10-24x .50 Type F PH Phillips

24A

1

3916500

Impeller, Motorized 2' or 3' Enclosure, 115V

24B

1

3916501

Impeller, Motorized 2' or 3' Enclosure, 230V

24C

1

3903300

Impeller, Motorized 4', 115V

24D

1

3903301

Impeller, Motorized 4', 230V

24E

4

1601800

Vibration Isolator Mount

25A

1

1306900

Capacitor, 2', 115V 10 MFD

25B

1

1306900

Capacitor, 3', 115V 10 MFD

25C

1

1306600

Capacitor, 4', 115V 15 MFD

25D

2

1306800

Capacitor, 2', 230V 4 MFD (effective 2MFD)

25E

2

1306800

Capacitor, 3', 230V 4 MFD (effective 2MFD)

25F

1

1306800

Capacitor, 4', 230V 4 MFD

26A

1

1235400

Ballast, Fluorescent 2', 115V

26B

1

1235500

Ballast, Fluorescent 2', 230V

26C

1

1294000

Ballast, Fluorescent 3' or 4', 115V or 230V

28A

1

1325500

Speed Control, 115V

28B

1

1325501

Speed Control, 230V

29A

1

3910800

Upper Diffuser Screen 2'

29B

1

3910801

Upper Diffuser Screen 3'

29C

1

3910802

Upper Diffuser Screen 4'

30A

2

3916700

Clip, Upper Diffuser

75

Appendix A: Replacement Parts

Item

Qty.

Part Number

Description

30B

2

1893708

Screw, #10 x .50 PH Phil. Thd. Forming

31A

2

1881196

Capscrew, 3/8 –16x 6.0 Lg. Hx. Hd.

31B

2

1924403

Sealing Washer 3/8

32A

1

3707900

HEPA Filter (2') 18 x 18 x 3.32 w/ Gasket

32B

1

3707901

HEPA Filter (3') 30 x 18 x 3.32 w/ Gasket

32C

1

3707902

HEPA Filter (4') 42 x 18 x 3.32 w/ Gasket

33A

1

3937200

2' Odor Control Organic Vapor Carbon Filter

33B

1

3937201

2' Odor Control Formaldehyde Carbon Filter

33C

1

3937202

2' Odor Control Ammonia Carbon Filter

33D

1

3937300

3' Odor Control Organic Vapor Carbon Filter

33E

1

3937301

3' Odor Control Formaldehyde Carbon Filter

33F

1

3937302

3' Odor Control Ammonia Carbon Filter

33G

1

3937400

4' Odor Control Organic Vapor Carbon Filter

33H

1

3937401

4' Odor Control Formaldehyde Carbon Filter

33I

1

3937402

4' Odor Control Ammonia Carbon Filter

34

1

7907802

Digital Monitor Outlet, 115V only, 230V

 

 

 

connected at laboratory outlet location.

35A

1

1333800

IEC Power Inlet

35B

1

1305800

Power Cord, 115V, Right Angle

35C

1

1334200

Power Cord, 230V, Right Angle

36A

1 - (115V)

1327200

Circuit Breaker, 3 AMP

36B

2 – 230V

1327205

Circuit Breaker, 2 AMP

37A

1 (115V)

3908500

Digital Airflow Monitor, 115V – 15VDC

 

 

 

Adapter, Airflow Sensor

37B

1 (230V)

3908501

Digital Airflow Monitor, 230V – 15 VDC

 

 

 

Adapter, Airflow Sensor

37C

1

1595621

Hole Plug, 1.187 Dia.

38A

1

3919800

Exhaust Duct, 6" (XPert Station only)

38B

4

1893708

Screw, #10 x .50 PH Phil. Type AB

39A

1

3919700

XPert Station Top Panel 2'

39B

1

3919701

XPert Station Top Panel 3'

39C

1

3919702

XPert Station Top Panel 4'

40A

1

1952500

Gauge, Pressure Mini Helic II

40B

1

3667400

Bracket, Gauge

40C

2

1905617

Nut, #10-24KEPS

40D

2

1551700

Tubing, 3/16" ID x 5/16" OD, PBC 7.00" Lg.

40E

2, 1" Long

3788200

Snubber, Filter Pressure Gauge

41A

1

1289101

115V Relay (for Remote Blower on XPert

 

 

 

Filtered Station)

41B

1

1289102

230V Relay (for Remote Blower on XPert

 

 

 

Filtered Station)

42

1

3925600

Harness, Relay (for Remote Blower on XPert

 

 

 

Filtered Station)

76

Appendix A: Replacement Parts

Use for XPert System and XPert Station

7

21

8

20

 

 

 

 

 

 

23

 

 

 

 

 

 

 

 

 

 

 

22

 

17

 

 

 

 

 

 

 

 

 

 

26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

 

 

 

 

 

 

 

34

 

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

30 33

Placed

40 on ledge above

HEPA filter

13

36

 

31

14

35

32

24

16

9

12

11

5

4

1

 

 

 

10

3

2

6

 

 

77

Appendix A: Replacement Parts

Use for XPert System, XPert Station, Digital Monitor and Bag

23

37

42 Location

37 only Not shown

18

19

8

20

41, Location only Not shown

39 Needs to be sealed on XPert Station

Ships uninstalled as shown

38

32

37

37

78

APPENDIXB

DIMENSIONS AND

EXHAUSTOPTIONS

See the following dimensions and exhaust options for all the XPert Filtered Balance Systems and XPert Filtered Balance Stations.

79

Appendix B: Dimensions and Exhaust Options

Figure B-1

XPert Filtered Balance System

80

Appendix B: Dimensions and Exhaust Options

Figure B-2

XPert Filtered Balance Station

81

Appendix B: Dimensions and Exhaust Options

Figure B-3Exhaust Duct connection Kit

(Optional Installation on Integral Blower Models such as the XPert Filtered Balance System)

82

APPENDIXC

FILTERED

ENCLOSURE

SPECIFICATIONS

This Appendix contains technical information about all the XPert Filtered Enclosures including electrical specifications, environmental operating conditions and wiring diagrams.

3 Amps, 115V or 2 Amps, 230V, 50/60 Hz, XPert Filtered Balance System and XPert Filtered Balance Station.

Environmental Conditions

Indoor use only.

Maximum altitude: 6562 feet (2000 meters).

Ambient temperature range: 41° to 104°F (5° to 40°C).

Maximum relative humidity: 80% for temperatures up to 88°F (31°C), decreasing linearly to 50% relative humidity at 104°F (40°C).

Main supply voltage fluctuations not to exceed ±10% of the nominal voltage.

Transient over-voltagesaccording to Installation Categories II(Over-voltageCategories per IEC 1010). Temporary voltage spikes on the AC input line that may be as high as 1500V for 115V models and 2500V for 230V models are allowed.

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Appendix C: Filtered Enclosure Specifications

Used in an environment of Pollution degrees 2 (i.e., where normally only non-conductiveatmospheres are present). Occasionally, however, a temporary conductivity caused by condensation must be expected, in accordance with IEC 664.

84

Appendix C: Filtered Enclosure Specifications

C-1

85

Appendix C: Filtered Enclosure Specifications

C-2

86

Appendix C: Filtered Enclosure Specifications

C-3

87

Appendix C: Filtered Enclosure Specifications

C-4

88

PPENDIX

D

 

 

 

A

 

 

 

 

 

UICK

HART

OR

 

 

Q

 

C

 

F

 

 

HE

ILTERED

 

 

 

T

F

 

 

 

 

 

NCLOSURES

 

 

 

E

 

 

 

 

 

 

Model Size

 

 

 

2'

3'

4'

Sash Height from Work Surface (inches)

9.44

9.44

9.44

Total Open Area with Bypass (sq. ft.)

1.45

2.20

2.95

Exhaust Airflow Volume at 90fpm (CFM)

130

200

265

Alarm Airflow Volume at 60 fpm (CFM)

85

130

175

Initial Mag. Gauge Pressure Reading (inches H2O)

0.20 to .045

0.15 to 0.40

0.10 to 0.35

Number of Laskin Nozzles needed at 10 psig

1

1

1

Exhaust HEPA Filter w/ Gasket Dimensions (inches)

18x18x3.31

30x18x3.31

42x18x3.31

 

*Motor Horsepower (HP)

0.13

0.13

0.30

 

*Capacitor (MFD, Volts)

10MFD, 115V

10MFD, 115V

15MFD, 115V

 

 

 

 

(2) 4MFD, 230V

(2) 4MFD, 230V

4MFD, 230V

 

 

Fluorescent Lights

F15T8-SP35

F17T8

F25T8

*excludes XPert Filtered Balance Station, since it has no integral blower.

To determine the actual face velocity at the sash opening, airflow velocity readings will need to be 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.

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APPENDIXE

REFERENCES ON

VENTILATION,

SAFETY,

OCCUPATIONAL

HAZARDS,

BIOSAFETY AND

DECONTAMINATION

Many excellent reference texts and booklets are currently available. The following is a brief listing:

Laboratory Ventilation Standards

Federal Register 29 CFR Part 1910

Non-mandatoryrecommendations from “Prudent

Practices.”

Fume hoods should have a continuous monitoring device

Face velocities should be between 60-100linear feet per minute (lfpm)

Average 2.5 linear feet of hood space per person

90

Appendix E: References

Occupational Health and Safety U.S. Department of Labor

200 Constitution Avenue N.W. Washington, DC 20210

(202) 523-1452www.osha.gov

Industrial Ventilation-ACGIH

Fume hood face velocities between 60-100lfpm

Maximum of 125 lfpm for radioisotope hoods

Duct velocities of 1000-2000fpm for vapors, gasses and smoke

Stack discharge height 1.3-2.0x building height

Well designed fume hood containment loss, <0.10 ppm

Industrial Ventilation, A Manual of Recommended

Practice.

24th Edition, 2001

American Conference of Governmental Industrial Hygienists

1330 Kemper Meadow drive Cincinnati, OH 45240-1634(513)742-2020www.acgih.org

ASHRAE 110-1995Method of Testing Performance of

Fume Hoods

Evaluates fume hood’s containment characteristics

Three part test: Smoke generation, Face velocity profile, Tracer gas release @ 4 liters per minute

Rated As Manufactured (AM), As Installed (AI) and As Used (AU)

American Society of Heating, Refrigerating, and Air Conditioning Engineers

1791 Tullie Circle N.E. Atlanta, GA 30329 (404) 636-8400www.ashrae.org

ANSI Z9.5-1993Laboratory Standard

Covers entire laboratory ventilation system.

Vertical stack discharge @ 2000-3000fpm

New and remodeled hoods shall have a monitoring device

Ductless hoods should only be used with non-hazardousmaterials

Fume hood face velocities between 80 – 120 fpm

91

Appendix E: References

American Industrial Hygiene Association 2700 Prosperity Avenue, Suite 250 Fairfax, VA 22031

(703) 849-8888www.aiha.org

SEFA 1-2002

Fume hood face velocities based on toxicity levels of chemicals

Class A – 125 to 150 fpm Class B – 80 to100 fpm Class C – 75-to80 fpm

Test method – face velocity profile and smoke generation

Scientific Equipment & Furniture Association 1028 Duchess Drive

McLean, VA 22102 (703) 538-6007www.sefalabs.com

NFPA 45 – 2002 Fire Protection for Laboratories Using

Chemicals

Laboratory hoods should not be relied on for explosion protection

Exhaust air from fume hoods should not be recirculated

Services should be external to the hood

Canopy hoods only for non-hazardousapplications

Materials of construction should have flame spread of 25 or less

80 to 120 fpm to prevent escape

NFPA 30 – 2000 Flammable and Combustible Liquids

Code

Approved cabinets may be metal or wood

Vent location on cabinets are required

Venting of cabinets not a requirement

National Fire Protection Association 1 Batterymarch Park

P.O. Box 9101

Quincy, MA 02269-9101(800)344-3555www.nfpa.org

92

Appendix E: References

General References

American Conference of Governmental Industrial

Hygienists. Industrial Ventilation, A Manual of

Recommended Practice, Cincinnati, OH

ASHRAE Standard Committee. ASHRAE Standard Atlanta:

ASHRAE Publications Sales Department, 1995

British Standards Institution, Laboratory Fume Cupboards.

Parts 1, 2 and 3, London: 1990

Department of Labor, Occupational Safety and Health Administration, 29 CFR Part 1910, Occupational Exposures to Hazardous Chemicals in Laboratories, Final Rule. Vol. 55, No. 21. Washington D.C.:1990

DiBerardinis. L. et al. Guides for Laboratory Design, Health and Safety Considerations. Wiley & Sons, 1987

McDermott, Henry, Handbook of Ventilation for Contaminant Control, 2nd Edition. Butterworth Publishers, 1985.

Miller, Brinton M. et al. Laboratory Safety: Principles and

Practices. American Society for Microbiology, Washington,

D.C.: 1986

NIH Guidelines for the Laboratory Use of Chemical

Carcinogens. NIH Publication No.81-2385.

Rayburn, Stephen R. The Foundation of Laboratory Safety,

A Guide for the Biomedical Laboratory. Springer-Verlag,

New York: 1990

Sax, N. Irving and Lewis, JR., Richard J. Rapid Guide to

Hazardous Chemicals in the Workplace. Van Nostrand

Reinhold, 1987.

Schilt, Alfred A. Perchloric Acid and Perchlorates. The G.

Frederick Smith Chemical Company, Columbus, OH: 1979.

Steere, Norman. CRC Handbook of Laboratory Safety, 2nd

Edition. CRC Press, 1971.

Collins, C.H., 1988. Laboratory Acquired Infections,

History, Incidence, Causes and Prevention, 2nd ed.,

Butterworths, London.

93

Appendix E: References

Kruse, R.H., WH. Puckett and J. H. Richardson. 1991. Biological Safety Cabinetry, Clin. Microbiol. Rev. 4:207241.

Miller, C.D., D.H.M. Groschel, J. H. Richardson, D. Vesley,

J. R. Songer, R. D. Housewright and W. E. Barkley. 1986.

Laboratory Safety, Principles and Practices, American

Society for Microbiology, Washington, D.D.

National Research Council (U.S.) Committee on Hazardous Biological Substances in the Laboratory. 1989. Biosafety in the Laboratory. Prudent Practices for Handling and Disposal of Infectious Materials. National Academy Press, Washington, D.C.

Rayburn, S.R. 1990. The Foundations of Laboratory Safety,

Springer-Verlag,New York.

U. S. Department of Health, Education and Welfare.

Formaldehyde Decontamination of Laminar Flow Biological

Safety Cabinets, National Institutes of Health, Division of

Safety, Bethesda, MD 20892.

U. S. Department of Health, Education and Welfare.

Effective use of a Laminar Flow Biological Safe Cabinet.

National Audiovisual Center (GSA), Sales Branch, Catalog

No., NAC 005133, Washington, D.C.

U. S. Department of Health, Education and Welfare. 1975.

Selecting a Biological Safety Cabinet. National Audiovisual

Center (GSA), Sales Branch, Catalog No. NAC 000709,

Washington, D.C.

U. S. Department of Health and Human Services. 1999.

Biosafety in Microbiological and Biomedical Laboratories, 4th ed. U.S. Department of Health and Human Services, Publication No. (CDC) 93-8395. U. S. Government Printing Office, Washington, D.C.

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