Gentek 3940322, 3940200 Initial Certification, Re-Certification, Formaldehyde only, Ammonia only

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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:

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Contents User’s Manual USA Warranty Able Ontents PrerequisitesMaintaining Your Filtered Enclosure Chapter Introduction Introduction About This Manual Typographical Conventions Chapter Prerequisites Temperature Variation Requirements Support, Vibration and Movement RequirementsHumidity and Static Electricity Requirements Background on Electrostatics or Static ElectricityExhaust and Blower Requirements Location and Air Current RequirementsSurface Resistivity Table XPert Station Electrical Requirements Space RequirementsChapter Getting Started Lift by the front air foilUnpacking the Enclosure Do not move the enclosure by tilting it onto a hand truckWork Surface Specifications Work Surface and Hepa Filtered Enclosure InstallationFiltered Enclosure Installation XPert Station Getting Started Getting Started Carbon Filters Accessory for Odor Control only Installation of Hepa Filters Accessory Odor Control CarbonHepa Filters Filter Type Appropriate Use 115V ModelsGetting Started Set the Face Velocity with the Speed Control Adjustment Validating the Vented EnclosureSealing the Filtered Enclosure to the Work Surface Chapter High Performance Features and Safety Precautions High Performance FeaturesHigh 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 Routine Daily Work Procedures PlanningStart-up Loading Materials and EquipmentWork Techniques Final PurgingHepa Filter Applications Suitability and Guidelines Suitable ApplicationsShutdown Odor 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 UseBalance Station, which uses a remote blower Chapter Maintaining Your Filtered Enclosure Weekly Routine Maintenance ScheduleMonthly or more often as required Decontamination Determination of when to Replace Hepa FiltersAnnually Maintaining Your Filtered Enclosure Hepa Filter Leak Test PurposeMineral oil Catalog #1491400 Acceptance Calibrate and Operate the Airflow Monitors Labconco Airflow Monitor / Airflow Switch OperationGuardian Airflow Monitor LED Monitor Enclosure Operating In-Flow Alarm Condition Set Point Speed CalibrationGuardian Airflow Monitor LED with Airflow Switch Guardian Digital 1000 Airflow MonitorOperation Digital 1000 CalibrationFactory Settings Guardian Digital 1000 Airflow Monitor Maintaining Your Filtered Enclosure Odor Control Carbon Filter Replacement Procedure See Calculating Odor Control Carbon Filter Life Steps for Calculating PPM and Filter LifeInitial Certification Re-CertificationFormaldehyde only Ammonia onlyFluorescent Light Replacement Motorized Impeller ReplacementMotorized Impeller Replacement Speed Control Replacement Chapter Accessorizing Modifying Your Filtered Enclosure Work SurfacesAirflow Monitor Add appropriate Front Panel with cutout to mount DigitalExhaust Transition Kits for Ducting to Outside Part Description Remote BlowersAccessory Filters Hepa Filter Exhaust DampersHepa Filter Bag-In/Bag-Out Bag Odor Control Carbon FilterStorage Cabinets Utility Shelf KitAccessorizing and Modifying your Filtered Enclosure Chapter Troubleshooting Servicer Operating LOG Problem Cause Corrective ActionTroubleshooting Problem Cause Corrective Action Service Operating Record Log Date CommentsAppendix a Filtered Enclosure Components Replacement Parts Qty Part Number Description Qty Part Number Description Long Use for XPert System and XPert Station Use for XPert System, XPert Station, Digital Monitor and Bag Appendix B Dimensions Exhaust Options Figure B-1 XPert Filtered Balance System Figure B-2 XPert Filtered Balance Station Appendix B Dimensions and Exhaust Options Appendix C Filtered Enclosure Specifications Environmental ConditionsAppendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Appendix C Filtered Enclosure Specifications Ppendix Uick Hart Iltered Nclosures Model SizeNon-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