Gentek 3950302, 3940200, 3950320, 3950202, 3940421, 3940320, 3940402 Validating the Vented Enclosure

Page 26

Chapter 3: Getting Started

230V Models

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

Set the Face Velocity with the Speed Control Adjustment

For XPert Filtered Balance Systems, adjustment of the speed control gives the correct face velocity and is located behind the front panel. The face velocity should be adjusted from 60 to 100 fpm for weighing operations. (Consult your Safety Officer for airflow recommendations for your application). Containment is maximized at a setting within this range. Working at the lowest face velocity appropriate for the application will give the quietest operation. Face velocity measurements are made using an anemometer. An electric anemometer can be obtained from your laboratory supply dealer. Face velocity measurements should be taken in accordance with the Industrial Ventilation Manual. Using a small Phillips screwdriver, adjust the speed control to give the required face velocity. See Figures 6-1 and 6-2 in Chapter 6 to locate the speed control. The face velocity is increased by turning the speed control counter clockwise and clockwise to decrease face velocity.

XPert

Filtered

Balance

System Only

Validating the Vented Enclosure

To determine the actual face velocity at the sash opening, airflow velocity readings are taken. This should be done across the sash opening of the enclosure in accordance with the Industrial Ventilation Manual. (See Appendix E) The “average face velocity” is achieved by taking readings in two rows across the enclosure with the readings 6" from the ends and evenly spaced every 12"; the first row is 3" down from the upper sash foil and the second row is 3" up from the work surface. A total of four readings will be taken for the 2' enclosure, six readings taken for the 3' enclosure and eight readings taken for the 4' enclosure and then averaged. Refer to Chapter 2 for proper airflow volumes for your particular model.

The XPert enclosures have been tested at Labconco’s airflow test facility per ASHRAE 110-1995. All enclosures achieve an “as manufactured rating” of less than 0.05 part per million (ppm) at 4 liters per minute (lpm); AM <0.05 (Consult Labconco for

21

Image 26

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 ElectricitySurface Resistivity Table Location and Air Current RequirementsExhaust and Blower Requirements 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 Hepa Filters Installation of Hepa Filters Accessory Odor Control CarbonCarbon Filters Accessory for Odor Control only 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 PlanningWork Techniques Start-upLoading Materials and Equipment Final PurgingShutdown Suitable ApplicationsHepa Filter Applications Suitability and Guidelines 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 Monthly or more often as required Routine Maintenance ScheduleWeekly Annually Determination of when to Replace Hepa FiltersDecontamination Maintaining Your Filtered Enclosure Hepa Filter Leak Test PurposeMineral oil Catalog #1491400 Acceptance Guardian Airflow Monitor LED Monitor Labconco Airflow Monitor / Airflow Switch OperationCalibrate and Operate the Airflow Monitors 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 LifeFormaldehyde only Initial CertificationRe-Certification Ammonia onlyFluorescent Light Replacement Motorized Impeller ReplacementMotorized Impeller Replacement Speed Control Replacement Chapter Accessorizing Modifying Your Filtered Enclosure Work SurfacesExhaust Transition Kits for Ducting to Outside Add appropriate Front Panel with cutout to mount DigitalAirflow Monitor Part Description Remote BlowersHepa Filter Bag-In/Bag-Out Bag Accessory Filters Hepa FilterExhaust Dampers 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