High Performance Fume Hood
Contents
1. LL Frontier Acela Fume Hood Conventional Fume Hood 2000 1543cmh 1400cmh Eu 824cfm 1296cmh 763cfm 1500 1094cmh 644cfm 1543 cmh 908 cfm 2372 cmh 1396 cfm 1000 500 492cmh 290cfm 1 2m 4 642cmh 378cfm 1 5m 5 793cmh 467cfm 1 8m 6 2 4m 8 Fume Hood Width FrontiereacEeLa Fume Hoods e Laboratory Fume Hoods Benefits For All Stakeholders Health and Safety Authorities e ASHRAE 110 and EN 14175 tested at face velocities down to 0 3m s 60Tpm e Sash lock and creep down mechanisms ensure operator safety e Optional Sentinel XL Airflow Monitor Facility Owners ening i e Operates at 0 3 m s 60 fom at 457 mm 18 0 operating height e Energy savings of up to US 5600 annually for each fume hood J d f F GG Lab Personnel e Certified safety a ae es e Precisely tuned aerodynamics 8 High sight line Angled front E Excellent ergonomics e T d Lab Designers and Architects e Neutral colour scheme e Futuristic design e Detailed architectural specifications and drawings Installation and Service Personnel e Robust tri wall side pan construction e Factory fitted service fixtures are pre plumbed e Chain and sprocket sash e Wide range of field installed accessories ESCO WORLD C2. 901 cmh 31 8 Pa 530 cfm 0 13 WG 1177 cmh 34 7 Pa 692 8 cfm 0 14 WG 1453 cmh 41 8 Pa 855 cfm 0 17 WG 2005 cmh 32 3 Pa 1180 cfm 0 13 WG Pressure Required Ye TS 60 fom 0 4 m s 80 fom Full Full 899 cmh 22 1 Pa 526 cfm 0 09 WG 1199 cmh 36 7 Pa 701 cfm 0 15 WG 1175 cmh 28 7 Pa 691 cfm 0 12 WG 1556 cmh 49 3 Pa 922 cfm 0 20 WG 1450 cmh 36 1Pa 848 cfm 0 15 WG 1933 cmh 61 4 Pa 1138 cfm 0 25 WG 1819 cmh 27 3 Pa 1070 cfm 0 11 WG 2668 cmh 48 3 Pa 1570 cfm 0 19 WG 0 5 m s 100 Tom Exhaust Outlet Diameter Number of Exhaust Collars Full 1499 cmh 66 6 Pa 877 cfm 0 27 WG 1958 cmh 76 6 Pa 1152 cfm 0 31 WG 2197 cmh 94 7 Pa 1285 cfm 0 38 WG 3335 cmh 74 3 Pa 1962 cfm 0 30 WG 305 mm 12 When sash is in full open position total height of fume hood is 1644mm 64 7 Please ensure sufficient ceiling height clearance is available External Width Code Internal Depth Code Guide to Models Internal Liner Code Color Code Electrical Code Serviceability Baffles remove to allow cleaning inside the hood Internal access panels on side walls facilitate access to plumbing connections for service especially when hoods are installed next to each other e Removable front panel facilitates easy access to lighting and ot
3. Frontier Acela High Performance Fume Hood vertical sash shown Model EFA 5UDUVW 9 Shown with EBA 5UDG O Ze High Performance Fume Hood Laminar Topography and Perfect Protection Perimeter About Eeco c ccc cece cece eee 02 World Class Test Facility 02 American Standard ASHRAE 110 1995 KEE EEN Os European Standard EN14175 SEI Energy Efficiency 04 Benefits For All Stakeholders 05 Frontier Acel e High Performance Fume Hood Laminar Topography and Perfect Protection Perimeter 06 Computational Fluid Dynamics 07 Safety Certified and Tested 08 General Specifications 09 Guide to Models 09 Technical Specifications 10 Options and Accessories 11 Frontier Acela Base Cabinetry EBA 13 Ordering a Frontier Acela Fume Hood 14 Frontier AcCELA Fume Hoods e Laboratory Fume Hoods About Esco Since Esco was founded in 1978 our company has earned a reputation for innovation in the worldwide laboratory equipment and cleanroom industry Today Esco has emerged as a market leader in containment clean air and laboratory equipment technologies with active sales in more than 100 countries and direct company offices in the top ten geospecific markets From our headquarters in Singapore Esco directs a highly efficient research p
4. N al SH e Si c oi SI ei E o 19 DO E E E LE aal z ao SS N O K i Sg e O m o O a 8 Q LO N Dl H c S 675 mm 26 6 A 900 mm 35 4 Wgl 1 Electrical junction box 13 Provision for additional outlets SE Fume Hood 2 Service Fixture Pass Thru 14 Gas fixture remote P Installation Requirements 3 Curved removable front panel 15 Cold water fixture remote 4 Sash stop 16 Fiberglass exhaust collar Proper location refer to Esco recommendations 5 Tempered laminated framed sash glass 17 Light housing Bastien BEE Ee Sa Exhaust system capable of delivering airflow FOVISION TOF alrTlow aiarm mingea allTOl i S Ge EE SE and pressure drop requirements 7 Light and fan switch 19 Side access panel 8 Distillation grid provision 20 Enhanz service fixture powder coat finished Exhaust ductwork and connection 9 Provision for Distilation Services CW Cold Water 1 set gas Gas 1 set accesories 10 Side vane 21 Drainage system with 1 5 BSP bushing Exhaust blower or building exhaust system 11 Electrical outlets 22 Flash airfoil hinged for cleaning spillage Ee Contactor if applicable 12 Sash keylock lock sash at fully open and fully close containtment 0 4 Litres 0 1 gallons if app Means of adjusting exhaust flow Fume Hood Dimensional Data damper or frequency inverter EFA 4UDU_W 9 1220 mm 48 0 996 mm 39 0 610 mm 24 0 Base cabinet or other means of
5. First published in 1985 and extensively revised in 1995 this standard employs a set of rigorous tests to evaluate hood performance 1 Airflow Visualization e Local and gross airflow visualization tests conducted to observe airflow patterns inside work chamber Grading Observations Fail Smoke observed escaping from the hood Poor Reverse flow of smoke near opening Lazy flow into opening along boundary Observed potential for escape Fair Some reverse flow not necessarily at opening No visible escape Good No reverse flows Active flow streams into hood around boundary Face Velocity Measurements Face velocity and uniformity tested at 100 and design sash opening position Typical measurement grid for 1 5m 5 hood at 457mm 18 sash opening 100 275 lal 275 era 275 ai 275 gt 100 gt Sash opening Tracer Gas Containment Tracer gas containment test SF6 released at 4L min inside work chamber Consists of 3 parts Static gas leak conducted at 3 positions left right centre Face hood surface scan Sash movement effect Test criteria leakage of less than 0 05 ppm as manufactured European Standard EN 14175 EN 14175 is a harmonized European standard which supercedes the former national standards of Germany the UK and France A key element of the EN 14175 which is not present in the American ASHRAE 110 standard is the robu
6. Ductless Fume Hoods Carbon Filtration General Purpose Scientific Equipment Industrial Lab Equipment In Vitro Fertilization Products PCR Products Pharmacy Products Lab Animal Research Products Lab Thermostatics Products Lab Ventilation Chemical Fume Products Lab Furniture Powder Handling Products Since 1978 Esco has emerged as a leader in the development of controlled environment laboratory and cleanroom equipment solutions Products sold in more than 100 countries include biological safety cabinets cleanroom products compounding pharmacy equipment containment pharma products ductless fume hoods in vitro fertilization workstations lab animal research products laboratory fume hoods laboratory ovens and incubators laminar flow clean benches and PCR products and instrumentation With the most extensive product line in the industry Esco has passed more tests in more languages for more certifications throughout more countries than any biosafety cabinet manufacturer in the world Esco remains dedicated to delivering innovative solutions for the clinical life science research and industrial laboratory community www escoglobal com Airflow Alarms and Monitors e Biological Safety Cabinets e Exhaust Blowers Benchtop Laboratory Fume Hoods e High Performance Low Flow Fume Hoods cco WORLD CLASS WORLDWIDE Esco Technologies Inc e 2940 Turnpike Drive Units 15 16 e Hatboro PA 19040 USA Toll Free USA and Ca
7. Tested ial tai All Esco fume hoods are manufactured for the most demanding laboratory Ba tcc arrea my applications AF e Independently tested and certified 4ft 5ft and 6ft models by Tintschl fi Changi Gouth B reei Singapore AMGTT Engineering AG to the European Standard EN 14175 3 CERTIFICATE em ge eeg rm EN 14175 part 3 Independently tested and certified by Exposure Control Technologies Inc to a the American Standard ASHRAE 110 Ergonomic design features combine to create a more comfortable work environment which promotes safety by enabling the user to concentrate on his her work Hoods are ASHRAE tested on the production line on a sampling basis industry exclusive Sash is clearly labeled with all operating instructions and illustrations Superstructure e Ergonomic design on the Esco Frontier Acela is anthropo e Tri wall construction for maximum robustness metrically proven e Hood lighting is pre wired Lighting is electronically ballasted energy efficient instant start Typical light intensity on work surface is gt 1076 lux gt 100 foot candles in zero ambient conditions e Fabricated of electro galvanized steel zinc coated to prevent rusting even if the powder coat is abraded and phosphate for better adhesion of the powder coating e Epoxy polyester hybrid Isocide Additional Safety Features antimicrobial powder coating pro vides long term chemical abra sion and weathering resis
8. support EFA SUDU_W 9 1525 mm 60 0 1301 mm 51 0 763 mm 30 0 Plumbing and electrical hook up EFA 6UDU_W 9 1830 mm 72 0 1606 mm 63 0 915 mm 36 0 Unless otherwise specified items and services specified above are not provided by Esco EFA 8UDU_W 9 2440 mm 96 0 2216 mm 87 0 664 mm 26 0 Frontie PACELA Options and Accessories Esco offers a variety of options and accessories to meet application requirements e All Frontier Acela Fume Hoods include 1 water and 1 gas Enhanz remote controlled fixture plumbed to the top of hood and 2 duplex outlets standard Specify outlet code when ordering Electrical Outlets Enhanz SFA deng Up to 4 duplex outlets per Service Fixtures fume hood 3 if airflow Remote control Style Utility alarm kit installed service fixtures for A Ameir Wee Water fume hoods pre oe plumbed Up to 8 Gemen service fixtures per Supply Electrical Outlets fume hood Code gt Vacuum gt Nitrogen gt Oxygen Compressed Air Argon Distillation DG SentineleXL Grids u E Airflow Alarm Kit Scatfoldings to l l Real time digital display support clamps External Width Material of face velocity Audible for distillation 4U 1220mm 48 0 S Stainless steel and visual alarms E Be apparatus 5U 1525mm 60 0 _ d Bag 44 6U 1830mm 72 0 W SU 2440mm 96 0 SXL EFA Work Tops External Depth D 900 mm Drip Cup WT au ogg ht Cut Out Positi
9. LASS WORLDWIDE W E y ar Frontier Acela High Performance Fume Hood Laminar Topography and Perfect Protection Perimeter Chain and Sprocket Sash Support System Large arbor sprockets and chain drive make sash travel quiet and effortless High Sight Line High sight line of 1803 mm 71 0 coupled with an automatic lowering function combines safety and convenience Perfect Pitch Profile Ergonomics safety and aesthetics all come D LE AECH together with the 5o K i Sc l DE SS A n g d KL f vi Ce pitch of the face ee ay re Acela Shaping Vanes Increase airflow sweep at the critical area at the side walls to improve containment especially when someone walks fast in front of the hood Ergonomic Sash Handle Gently directs air into the hood without sacrificing visibility Frontier AcCELA Fume Hoods e Laboratory Fume Hoods Standarde Compliance Tapered Fiberglass Exhaust Collar Transitions exhaust air quietly and enhance airflow uniformity US patent 6 428 408 Functionally Robust Bypass The unique design provides a robust stream of bypass air Hot Zone Baffles The unique Hot Zone Baffles draw most contaminants back in single pass displacement of the air Thermal Heat Relief is quickly achieved US patent 6 428 408 Aerodynamic Foil Entry Provides maximum airflow sweep on the critical boundary layer near to the work surfa
10. ce level to reduce turbulence and eliminate backflow Chemical Fume Containment ANSI ASHRAE 110 1995 USA EN 14175 Europe into the hood cavity Computational Fluid Dynamics Computational Fluid Dynamics CFD modelling is employed in the development of Esco clean air and containment devices Laminar Topography on Frontier Acela Fume Hoods was developed with compu tational fluid dynamics modelling in the Esco Research and Development Center The main thrusts of the project were improved airflow uniformity enhanced safety reduction in noise levels and en ergy consumption First engineering teams conceptualized possible designs and instead of building physical models utilized CFD to simulate airflow patterns pressurizations and visualize possible areas of turbulence This allowed a large number of iterations of the airfoil sash handle baffle bypass and exhaust collar to be evaluated Finally physical prototypes were constructed tested and the best design combination selected for production CFD has allowed us to effectively reduce the vortex in conventional fume hood de signs to the minimum resulting in a safe yet energy saving fume hood design Frontier Acela High Conventional Fume Hood Performance Low Flow Fume Hood Electrical Safety CAN CSA 22 2 No 61010 1 EN 61010 1 Europe IEC 61010 1 Worldwide ESCO WORLD CLASS WORLDWIDE Safety Certified and
11. conventional hoods VAV hoods and the Esco Frontier Acela High Performance Low Flow Hood Variable Air Volume VAV High Performance Low Flow Fume Hood 0 3 m s 60 fom 457 mm 18 0 sash opening using advanced aerodynamic designs Fume Hood 0 5 m s 100 fpm all sash positions with sophisticated control system Initial Cost Low High Medium Running Cost Very High Medium VAV Maintenance Low Ease of Installation SEN Difficult SEN Commissioning and Maintenance 1 Energy use and savings potential for laboratory fume hoods Evan Mills Dale Sartor Energy 2003 Compared with conventional hoods Esco Frontier Acela operates safely at 0 3 m s 60 fom at 457 mm 18 0 or full open sash position while maintaining excellent ASHRAE and EN containment Exhaust volume reductions of up to 62 may be Green Product achieved without compromising safety This translates into up to US 5600 in annual operating cost savings Unlike VAV systems the Esco Frontier Acela is easy and inexpensive to install commission and maintain Exhaust Volume Fume Hood Width 457 mm 18 0 492 cmh 290 cfm Frontier Acela 0 3 m s 60 fpm Reduction in Exhaust Volume Conventional Fume Hood 0 5 m s 100 fpm full sash open 1296 cmh 763 cfm 642 cmh 378 cfm 1400 cmh 824 cfm 793 cmh 467 cfm 1094 cmh 644 cfm Exhaust Volume cmh 2372cmh 2500 1396cfm
12. epth _ 900 mm 35 4 Sash Type dees page 9 L_ Vertical _ Combination Electrical Outlet Codes ccsecccsseeeseeeeesneeeeeeeeeeee page 11 2 duplex outlets standard up to 4 duplex outlets per fume hood Specify outlet codes when ordering Service FiXtUreS socccaccccaceccecsnsaseccencececteecesesecencnacncnce page 11 1 water and 1 gas remote controlled fixtures standard Up to a maximum of 6 more fixtures J Water Nitrogen E Argon _ Gas W Oxygen Vacuum Compressed Air Optional Airflow Monitor s sssseesssssseeereesreereennn page 11 Optional Distillation Grids En page 11 Worktop Material ccccccsccceesssseeeeeesseeeeeeeeeeeeeees page 11 LJ Epoxy Ile ai E page 11 WW Polypropylene Base Cabinet EE page 12 13 E Optional Base Cabinet Ventilation Kit page 12 13 _ Base Cabinet Filler Panels sssssssssssssesseeees page 12 13 One set required per continous run of hoods Select appropriate fume hood location Fsco s hood location recommendations are in every fume hood user manual Select appropriate exhaust blower and ducting system refer to general specifications table on page 9 for EFA exhaust volume and static pressure requirements FrontiereacEeLa Fume Hoods e Laboratory Fume Hoods 2 escoglobal com LIVE SUPPORT Biological Safety Products Cleanroom Products Containment Pharma Products
13. her electrical components mounted above the hood work chamber e Chain and sprocket sash system requires minimal service Warranty The Frontier Acela High Performance Fume Hood is warranted for 1 year excluding consumable parts and accessories Contact your local sales representative for specific warranty details Z ZIL D J yt O O O RW Vertical sashes provide for full face opening 1220mm 48 0 4U 900mm Gb A D Esco Resinate Plus U Vertical V EscoWhite W 110 120V AC 50 60Hz 9 1525mm 60 0 5U Combination C 1830mm 72 0 6U 2440mm 96 0 8U m N N oo Combination vertical and horizontal sashes enable full face opening for loading and set up while allowing the operator to restrict the maximum opening of the face but allow access to the top interior of the hood SO Ss RS Rn ee ele ee n AC a i 10 Model Frontier Acela Fume Hood Technical Specifications Top View 1400 mm 55 1 305mm_ 12 0 ee C Lg Fume Hoods e Laboratory Fume Hoods Front View Side View EI CO EI Sai E E ch
14. ight casing is not secured acting as an explosion harsh and comfortable work environment for the user relief allowing upward pressure release during explosions maximising user safety FrontiereacEeLa Fume Hoods e Laboratory Fume Hoods Model Nominal Size External Dimensions WxDxH Internal Dimensions WxDxH Maximum Sash Opening Face Velocity 0 3 m s 60 fom General Specifications Frontier Acela Fume Hood Sash Opening 457 mm 18 0 1 2 meters 4 1220 x 900 x 1521 mm 48 0 x 35 4 x 59 9 1 5 meters 5 1525 x 900 x 1521 mm 60 0 x 35 4 x 59 9 EFA 4UDU_W 9 EFA 5UDU_W 9 EFA 6UDU_W 9 1 8 meters 6 1830 x 900 x 1521 mm 72 0 x 35 4 x 59 9 EFA 8UDU_W 9 2 4 meters 8 2440 x 900 x 1521 mm 96 0 x 35 4 x 59 9 996 x 672 x 1240 mm 39 2 x 26 5 x 48 8 1301 x 672 x 1240 mm 51 2 x 26 5 x 48 8 1606 x 672 x 1240 mm 63 2 x 26 5 x 48 8 2216 x 672 x 1240 mm 87 2 x 26 5 x 48 8 541 cmh 14 3 Pa 316 cfm 0 06 WG 740 mm 29 1 777 cmh 14 6 Pa 457 cfm 0 06 WG 872 cmh 19 9 Pa 510 cfm 0 08 WG 1203 cmh 14 2 Pa 708 cfm 0 06 WG 0 4 m s Exhaust 80 tpm 457 mm 18 0 721cmh 19 7 Pa 424 cfm 0 08 WG 942 cmh 23 7 Pa 554 cfm 0 10 WG 1163 cmh 28 8 Pa 684 cfm 0 12 WG 1604 cmh 26 4 Pa 944 cfm 0 11 WG 0 5 m s 100 fpm Volume Static 457 mm 18 0
15. nada 877 479 3726 Tel 215 441 9661 Fax 215 441 9660 us escoglobal com e usa escoglobal com Esco Micro Pte Ltd e 21 Changi South Street 1 e Singapore 486 777 Tel 65 6542 0833 Fax 65 6542 6920 e mail escoglobal com www escoglobal com Esco Global Offices Beijing China Breukelen The Netherlands Guangzhou China Kuala Lumpur Malaysia Manama Bahrain Marietta OH USA Mumbai India Philadelphia PA USA Salisbury UK Shanghai China Singapore co Micro Pte Ltd Ese Cert No 651333 PT Esco Bi Cert Ne Va_3K_11 10 2010 Esco Micro Pte Ltd Specifications Subject to Change ES1260 intan Indonesia lo 651333 1
16. on Material mi SPP Polypropylene External Width Material 4U 1220mm 48 0 E Epoxy 5U 1525mm 60 0 6U 1830mm 72 0 8U 2440mm 96 0 2 ESCO em VAN CIHIL DH CLASS WORLDWIDE Frontier Acela Base Cabinetry EBA d d Safety Certified and Tested e Built and tested according to SEFA 8 recommended practices Superstructure e Fabricated of electro galvanized steel zinc coated to prevent rusting even if the powder coat is abraded and phosphated for better adhesion of the powder coating e Epoxy polyester hybrid Isocide antimicrobial powder coating provides long term chemical abrasion and weathering resistance e Ships unassembled assembles rapidly on site Aesthetics and Ergonomics Design e Concealed door hinges e Soft close insulated doors e Adjustable shelf allows user to select optimum heights for upper and lower storage compartments Serviceability e Convenient access to levellers from inside base cabinet e Removable rear access panel facilitates installation and maintenance of plumbing and and drainage systems SEFA 8 Test on Frontier Acela Base Cabinet EBA Cabinet load test Type of Test Test Result PASS Cabinet concentrated load test PASS Cabinet torsion PASS Cabinet submersion test PASS Door hinge test PASS Door impact test PASS Door cycle test PASS Chemical spot test PASS Hot water te
17. roduct development manufacturing and customer service program We are the only company in our market that is completely configured to export most of what we manufacture Our many languages and cultures customs and traditions and modern business management techniques blend into a single effort focusing on customer service one customer at a time As you learn more about Esco you will understand why World Class Worldwide is more than a phrase It s part of who we are where we are from and where we are going World Class Test Facility Esco is proud to be one of the few manufaturers in the world with a test facility capable of testing hoods to both ASHRAE 110 1995 US and the EN141 75 3 European standards Esco s Fume Hood Test Laboratory was designed with the assistance of Tintschl Engineering AG a specialist consulting firm from Germany It has controlled relative humidity room temperature and pressure for optimum test conditions Esco is also one of the few companies to routinely sample and subject production fume hoods to a battery of containment and safety tests All custom fume hoods with modified dimensions are also tested in our laboratory to ensure containment before delivery American Standard ASHRAE 110 1995 The ASHRAE 110 1995 standard is a comprehensive method for evaluating the operator safety of fume hoods by determining quantitatively and repeatably how well the fume hood contains vapours released in the workzone
18. st PASS Impact test PASS Paint adhesion on steel PASS Paint hardness on steel FrontiereacEeLa Fume Hoods e Laboratory Fume Hoods PASS Options and Accesories e Ventilation Kit VK EBA Ventilates base cabinet utilising the hood exhaust system Field installed e Filler Panel FP EBAD One set of filler panels required per continous row of hoods Field installed Door Hinge Test Cabinet Load Test Model EBA Frontier Acela Base Cabinet Technical Specification 7 Rear access panel 2 Soft close door 4 3 Adjustable shelf 4 Adjustable shelf slot r 5 Base cabinet height leveller 6 Base cabinet filler panel optional 7 Ventilation provision 3 eil 5 Front View Front View EBA 4UDG 0 for EFA 4UDU_W 9 EBA 5UDG 0 EBA 6UDG 0 EBA 8UDG 0 for EFA 5UDU_W 9 EFA 6UDU_W 9 EFA 8UDU_W 9 13 8 S E E D D Top View for All Sizes Side View for All Sizes we mm OT arti B 849 mm 33 4 peal Ed a i EBA 5UDG 0 S EBA 6UDG 0 EBA 8UDG 0 650 mm 25 6 559mm 290mm I G nn n l ESCO em VAN CIHIL DH CLASS WORLDWIDE 1 10 11 12 13 Ordering a Frontier Acela Fume Hood Check List Fume Hood Width and Depth ceeeeeeeeeeees page 9 Widths _ 1220 mm 48 0 1525 mm 60 0 L_ 1830 mm 72 0 2440 mm 96 0 D
19. stness test which simulates air flow disturbance in front of the hood 1 Inner Grid Test e A set of 9 sampling tubes are arranged in a 3 x 3 grid ata distance of 30 mm from the measurement plane e Leakage will be measured at 6 different grid positions H H Sash opening 130mm Outer Grid Test Robustness Test Outer grid testing measures the leak age of tracer gas across the entire sash opening Sash is closed then opened during the test to investigate dynamic effect of sash movement For the robustness test a 0 4 x 1 9m plate crosses the front of the fume hood at 1 m s for 6 times Provides an indication of the sensitivity of the fume hood towards external disturbances FUME HOOD l Outer grid gt 400 mm lt u ESCO WORLD CLASS WORLDWIDE Energy Efficiency Fume hoods essential safety devices used in laboratory environments are highly energy intensive each one consuming more energy than three homes in an average U S climate Depending on climate and system design estimated energy costs for fume hoods range up to US 9000 annually based on face velocities of 0 5m s 100fpm at full sash open position for a 1 8m 71 0 hood Conventional Fume Hood 0 5 m s 100 fpm full open Working Principle e Variable Air Volume VAV is one of the various approaches presently employed to reduce hood energy consumption The table below compares
20. tance z FI e Sash stop limits sash movement beyond 457 mm 18 0 encouraging user to work at safe positions e When sash is raised above 457 mm 18 0 it will automatically and gently fall back to the safe level Esco s creep down mechanism unless held in place This enables the sash to be 8 raised temporarily to the full open position for set up of equipment and apparatus in hood while enforcing regular operation of the hood with a lowered sash e The pan type design from a single piece of steel unlike frame weld ed designs is easier to assemble on site and more robust for long term usage Aesthetics and Ergonomics Design e Sash creep down can only be disabled with a key which permits the laboratory manager or safety officer to restrict operation of the hood at sash openings above 457 mm 18 0 e Perfect Pitch Profile The gentle pitch of the hood enhances visibility and enables users to work further into the hood without strain eg e The sash can also be locked down in the fully closed position with the key in the event of a fume hood fault facility _ e Coordinated color scheme neutral white with light grey shutdown or simply to restrict access to equipment set up in accents blends the hood with any casework metal or wood the hood e A tall sight line creates a bright airy work space e Color temperature is tuned to provide a gentle bright but not Fluorescent l
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