Gentek 3980420, 3980423, 3980422, 3980200, 3980401, 3980403 Maintaining Your Filtered Enclosure

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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 any one 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

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Contents User’s Manual USA Warranty Prerequisites Able OntentsMaintaining Your Filtered Enclosure Chapter Introduction Introduction About This ManualGetting Started Typographical ConventionsIntroduction Chapter Prerequisites Location and Air Current Requirements Support, Vibration and Movement RequirementsExhaust and Blower Requirements Space Requirements Electrical RequirementsPrerequisites Lift by the front air foil Chapter Getting StartedDo not move the enclosure by tilting it onto a hand truck Unpacking the EnclosureWork Surface and Hepa Filtered Enclosure Installation Work Surface SpecificationsFiltered Enclosure Installation Connecting to the Exhaust System Optional Getting Started Carbon Filters Accessory for Odor Control only Installation of Hepa Filters Accessory Odor Control CarbonHepa Filters 115V Models Filter Type Appropriate UseValidating the Vented Enclosure Set the Face Velocity with Speed Control AdjustmentSealing the Filtered Enclosure to the Work Surface High Performance Features Chapter High Performance Features and Safety PrecautionsHigh Performance Features and Safety 1510 Hepa Filtered Enclosure Airflow Diagram High Performance Features and Safety High Performance Features and Safety High Performance Features and Safety High Performance Features and Safety Safety Precautions High Performance Features and Safety High Performance Features and Safety High Performance Features and Safety Planning Routine Daily Work ProceduresFinal Purging Start-upLoading Materials and Equipment Work TechniquesShutdown Suitable ApplicationsHepa Filter Applications Suitability and Guidelines Unloading Materials and EquipmentOdor Control Carbon Filter Applications sold as an accessory Definition of Terms Appropriate Chemicals for Odor Control Carbon Filters Chemical Carcinogen Use with Odor Control Carbon Filters Prohibited Acid Use Chapter Maintaining Your Filtered Enclosure Weekly Routine Maintenance ScheduleMonthly or more often as required Decontamination Determination of when to Replace Hepa FiltersAnnually How to Install a New Hepa Filter Hepa Filter Changing Diagram & Filter Leak Test Diagram Purpose Hepa Filter Leak TestAcceptance Calibrate and Operate the Airflow Monitor Labconco Airflow Monitor / Airflow Switch OperationGuardian Airflow Monitor LED Monitor Calibration Enclosure Operating In-Flow Alarm Condition Set Point Speed Guardian Airflow Monitor LED with Airflow Switch Maintaining Your Filtered Enclosure Odor Control Carbon Filter Replacement Procedure See Steps for Calculating PPM and Filter Life Calculating Odor Control Carbon Filter LifeAmmonia only Initial CertificationRe-Certification Formaldehyde onlyUV Light Replacement Fluorescent Light ReplacementMotorized Impeller Replacement Motorized Impeller Replacement Speed Control Replacement Work Surfaces Chapter Accessorizing Modifying Your Filtered EnclosureRemote Blowers For Purifier Class I Enclosure Guardian LED Airflow MonitorExhaust Transition Kits for Ducting to Outside Part DescriptionFor Purifier Hepa Filtered Enclosure Exhaust Dampers Accessory Filters Hepa FilterOdor Control Carbon Filter Utility Shelf Kit Storage CabinetsAccessorizing and Modifying Your Filtered Enclosure Problem Cause Corrective Action Chapter Troubleshooting Servicer Operating LOGTroubleshooting Problem Cause Corrective Action Date Comments Service Operating Record LogAppendix a Filtered Enclosure Components Replacement Parts Qty Part Number Description Qty Part Number Description 3788200 Snubber, Filter Pressure Gauge Hepa Appendix B Dimensions Exhaust Options Appendix B Dimensions and Exhaust Options Appendix B Dimensions and Exhaust Options Environmental Conditions Appendix C Filtered Enclosure SpecificationsAppendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Model Size Ppendix Uick Hart Iltered NclosuresNon-mandatory recommendations from Prudent Practices Appendix E References Nfpa 30 2000 Flammable and Combustible Liquids Code General References Laboratory Safety, Principles and Practices, American Page USA

3980203, 3980223, 3980402, 3980400, 3980422 specifications

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