2 Definition: Fume Cupboard - Regulations - Standards DIN part 1 defines the fume cupboard as a protection device in laboratories for works during which gases, vapours, aerosols or dusts can occur in hazardous quantities and concentrations.The Euro Fume Cupboard fulfills the requirements of all appropriate standards and regulations:DINBritish StandardAFNOR (French Standard)ASHRAE (US-Standard)EN (European Standard soon to come)
3 GS - LabelThis Euro Fume Cupboard is tested and certified according to the law for safety of appliances.Just as the complete laboratory furniture system, also this fume cupboard is equipped with the GS label.
4 Types and DimensionsTypesbench fume cupboardlow level fume cupboardwalk-in fume cupboardlow ceiling height fume cupboardspecial application fume cupboard (DIN part 2)filter fume cupboardradio-isotope fume cupboard (DIN )DimensionsAll Euro Fume Cupboard types are available in widths of 1200, 1500 and 1800 mm.
5 Construction – Installation The Euro Fume Cupboard consists of the independent main parts: fume cupboard underbench and fume cupboard top.Both units are completely factory- assembled and are delivered to the site ready for connection.
6 Construction – Installation Should the conditions on site not enable a pre-assembled delivery, the Euro Fume Cupboard will be put up on site from pre-assembled components.
7 Construction – Characteristics The fume cupboardunderbench comprises:two side panels of coated chipboardtwo epoxy resin coated upright in the rear; each with levelling device.two epoxy resin coated aluminium profiles at the front with integrated height adjustmenttwo epoxy resin coated steel traverses to hold the worktop
8 Construction – Characteristics The fume cupboardtop comprises:two side panels of coated chipboardone rear panel of coated chipboardone front panel of epoxy resin coated sheet steelone firmly installed sash with epoxy resin coated aluminium frame and hardened laminated safety glassone front sash or two synchronously running front sashes with epoxy resin coated aluminium frame and hardened laminated safety glass
9 Construction – Characteristics The fume cupboardtop comprises:one worktop (of synthetic ceramics, PP, epoxy resin or according to requirement)two or three detach-able service panels integrated in the back panelone rear baffle of solid grade laminateone top baffle of solid grade laminateone front and rear ceiling of coated chipboardone integrated lightone exhaust air manifold of PP, hardly flamable
10 Construction – Front Sash 1 sanitary service panel2 rear baffle3 air intake openings4 electrical service panel5 scaffold rod holders6 scaffold rods7 cup sinkThe Euro Fume Cupboard is equipped with a vertically adjustable front sash and with a sash of laminated safety glass, which is firmly installed on top.
11 Construction – Front Sash 1 front toothed disk 2 tooth belt 3 front sash 4 rear panel of fume cupboard 5 counter-weight 6 plywood panel (4 mm) 7 rear toothed diskThrough two toothed belts, which are independently running via a front and a rear toothed disk, the front sash is connected to two counter-weights. The counter-weights are running without any restricted guidance.
12 Construction – Front Sash 311 intact tooth belt 2 clamping plate (pulled-up) 3 track mechanism (not released) torn tooth belt 5 clamping plate (pressed down) 6 track mechanism (released) 7 springThe front sash is equipped with an aluminium frame on both sides and with an additional anti-skid device. If the toothed belts are properly working, a track mechanism against spring pressure is lifted. In case the toothed belt is torn, the spring will press the track mechanism to the outside and is wedged in the routing profile. Thus it is reliably avoided that the front sash will fall down in case of an error.1425367
13 Construction – Splinter Protection Illustration: sash in opened positionThe sash handle at the lower side of the front sash is formed in such a way that splashes, splinters or similar are re-routed down to the worktop if the sash is closed.1 front sash 2 sash handle 3 double handle profile 4 air-foil cill
14 Construction – Service Panels – Scaffold Rod Holders In the interior of the fume cupboard top up to three service panels are integrated in the rear panel. These service panels are either equipped with various supplies for water, gas, vacuum, compressed air, etc. or with a drip cup, or sockets for electricity. The valves and switches are located in the service modules of the fume cupboard underbench.The fume cupboard rear panel is equipped with up to 12 scaffold rod holders ( polybutylen-terephtalate) with cam fixing for scaffold rods with a diameter of 13 mm.Service Panels
15 Construction – Service Modules Each service module (300 mm wide, 180 mm high) can be individually equipped. The sanitary module can be equipped with several valves which are colour-coded and allocated to the outlets in the service panel at the rear panel of the fume cupboard.The electrical module can be equipped with rotary switches, press switches, sockets and fuse protections. These switches are also allocated to the sockets in the service panel at the rear panel of the fume cupboard.Service Modules
16 Construction – Ventilation Connection The exhaust air manifold is installed above the rear ceiling and is equipped with a connection diameter of 250 mm in order to allow an easy connection to a ventilation system. The exhaust air manifold is also equipped with two air intake openings with a diameter of 200 mm each.
17 Construction – Aerodynamics – Sash Handle and Worktop Front air foil cillThe air foil cill at the frontof the worktop is aero-dynamical in shape. .Sash handleThe aerodynamic shapewith clear tear-off edgesprovide for defined flowproportions at the sashhandle.The backflow of the doubleprofile causes a clear underpressure reduction whenopening the front sash.Thus considerably betterresults are achieved duringthe dynamic contaminanttest according to DINIllustr.: flow test in flat water ductIllustr.: flow visualization in mist test
18 Aerodynamics – Profile Support The aerodynamic shape of the patent-applied profile of the Euro Fume Cupboard reduces turbulences. Thus backflows are avoided and the results of the containment tests according to DIN are improved considerably. The laboratory staff is better protected.Illustr.: flow test in flat water duct
19 Aerodynamics – Distribution of Extraction Criterions for an optimizeddistribution of extraction atthe rear panel are:An even extraction through the entire fume cupboard interior (reduction of air circulation in favour of a piston flow).Extraction of heavy gases (e.g. vapours of solvents, bromine) by pulling down the baffle tightly above the worktop.Low pressure loss at high air volumes (EN, BS, ASHRAE).Service panels with circulating extraction slots completely integrated in the rear baffle.
20 Control and Regulation The Euro Fume Cupboard is equipped with the fume cupboard function display (FAZ) as required in DIN part 1 as a standard.As an option it can be equipped with a variable fume cupboard control, the Airflow-Controller 2, or with a constant airflow controller, the AC-C.Illustr.: operation of the airflow controllerIllustr.: operation of the function displayIllustr.: damper for airflow controller
21 Airflow Controller – Damper Furniture SystemAirflow Controller – DamperDepending on the ventilation concept and the conditions on site the damper of the airflow controller can be executed in various types:manifold dampertwin pipe damperpipe dampercrossboxA combination with sound absorber is also possible.
22 Airflow Controller – Control Valves MManifold Damper(The controller is directly installed on the fume cupboard top.
23 Airflow Controller – Damper DTwin Pipe DamperRThis damper is used instead of the manifold.dThis controller is also available with sound absorber.
24 Pipe Damper Airflow Controller – Damper JDepending on the pressure loss and on the construction height various dampers can be used.The pipe dampersare installed in theventilation planton site.
25 Ventilation ValuesDetailed values of the airflows and pressure losses are available for all fume cupboard types.Example: twin pipe controller
26 Ventilation ValuesDetailed values of the airflows and pressure losses are available for all fume cupboard types.
27 Sound LevelExtensive measurements were carried out by the Fraunhofer Institute for Building Physics to determine the A-valued sound level for the various Euro Fume Cupboard types and for the various Airflow Controllers.
28 Euro Fume Cupboard Sash Controller Illustr.: driving motor for SC 2 Each Euro Fume Cupboard can be optionally equipped (also in addition) with the sash controller SC2.It is the task of the SC2 to automatically close the SC2 if nobody is working with the fume cupboard.With a movement detector the SC2 controls the area in front of the fume cupboard for moving persons.As an additional option a photo-electric light barrier can be inserted in the lower cross profile. With this photo-electric light barrier also isothermic and stationary objects (e.g. appliances in the sash area) can be detected.The time between the last detection and the closing process can be adjusted.Illustr.: driving motor for SC 2Illustr.: movement detector
29 CommissioningThe Euro Fume Cupboard control units FAZ, AC2 and SC2 are completely pre-installed, adjusted and calibrated in the factory.Furthermore they are also subject to an extensive function test.
30 Integration of Appliances Apart from the control units FAZ, AC2, AC-C and SC2 also decentral service supply units can be integrated.Complete systems for vacuum, cooling water, clean and pure water and for the treatment of waste water are available.Illustr.: distribution and waste disposal system for chemical substances -Chem-Change
31 Integration of Appliances Through a funnel in the worktop flamable solvents are lead into the FWF 90 safety cabinet.