Suction and filtering devices for laser emissions 1-2013 We set air in motion
Contents Mobile suction and filter units Suction fan... 4 AEH-600 Suction unit... 5 FILTERCASE SL... 6 FILTERCASE LB... 7 AIRFILTER MINI... 8 FILTER UNITS TYPE SPA... 9 LMD 508 filter unit... 10 LMD 504 Filter unit... 11 HANDYCART Cartridge filter unit... 12 FILTER UNITS TYPE LFE Cartridge filter unit... 13 filtoo Mechanical filter unit... 14 CARTMASTER Cartridge filter unit... 15 Central suction and filter units FILTERCUBE 2N / H Central filter unit... 16 FILTERCUBE 4N / H Central filter unit... 17 Suction arms Alsident... 18 Suction arms Optiflex... 19 Service... 20
TEKA is an up-and-coming, modern company and one of the most important German enterprises in the field of extraction and filter technology. We convince our customers through innovation and cost effectiveness as well as reliability and quality. Our structures and processes are clear and target-oriented they meet the requirements of the modern business community. Especially in the metal-working industry, clean air at the workplace is a topic of vital importance. But also for companies in the medical and dental technology and in the electronics industry, clean air is essential for smooth production processes and last but not least also for the employees health. Our product portfolio consists of standardised modules and complete systems as well as of customized solutions. With competent advice, individual solutions and perfectly fitting systems, more than 100 TEKA employees in Germany and abroad want to achieve one goal: optimal air and climate conditions for our customers. TEKA was founded in 1995 by the current directors Jürgen Kemper and Erwin Telöken. The company is located in Velen in the region of Westphalia. In the nearby Borken-Weseke, TEKA runs an external training centre for special seminars, product trainings and presentations. Communication centre
4 Mobile suction and filter units Suction fan Sometimes it is even possible to lead the unfiltered air outside. For such cases we offer a compact radial fan. It is made of aluminium die casting and therefore especially quiet. Thanks to its robust construction it is suitable for continuous use. The wall-bracket can be installed simply by means of 4 screws and afterwards the fan is set with a quick snap fastener on the wall bracket. The blowing out direction can be freely determined. In addition, the intake was specified with a diameter of 100 mm, can even be supplied in size 125 or 150 mm. The normal size of the outlet is 160 mm. Standard equipment Housing made of cast silumin (with toggle type fastener) Statically and dynamically balanced fan wheels (guarantee a smooth running) Maintenance free motor Available as an option Wall-bracket Protective grid Sound insulation box Connection material Example of application: Suction fans Silumin cast fan Suction fans Volumetric flow of the fan 2 000 m 3 /h 2 500 m 3 /h 3 000 m 3 /h Motor performance 0,75 kw 1,1 kw 1,5 kw Dimensions (w x d x h) 449 x 438 x 410 449 x 438 x 410 449 x 438 x 438 Outlet spigot 160 mm 160 mm 160 mm Weight approx. 27 kg approx. 27 kg approx. 27 kg Supply voltage 230 V and 400 V Subject to modifications
5 AEH-600 Suction unit Suction- and pre-filter unit with longlife pocket-filter. The filter housing is made of powdercoated steel sheet. The filtering element can be taken off and changed easily by means of a big service door. The mains connection such as the main switch are positioned laterrally. The unit is equipped with a big silent fan for exhaust operations. Because of its low design the unit can be kept under the worktable. The inlet ( 100 mm) is positioned on top of the unit while the exhaust nozzle ( 100 mm) is positioned on the back. The exhaust hose can easily be assembled by means of a threaded hose clamp. The separation degree is higher than 85 %. This result permits the prefiltered air to be led outside promptly in most cases. Due to the small size of the unit it can be placed at nearly any place. Accessories and price list www.teka.eu AEH-600 Suction and outlet spigot AEH-600 Max. volumetric flow of the fan 615 m³/h Max. pressure 2 800 Pa Suction- and outlet nozzle each 100 mm Sound level approx. 66 db (A) Separation efficiency > 85 % Filter equipment Pocket filter Drive system Maintenance free motor Running performance 0,315 kw Dimensions (w x d x h) 365 x 376 x 646 mm Weight approx. 29 kg Filter equipment Pocket filter
6 Mobile suction and filter units FILTERCASE SL Filter unit as static version, particularly used for the extraction and filtration of laser and soldering emissions on jobs with low dust occurrence (e.g. in the jewellery industry). The unit can easily be operated by means of the power switch. The housing is made of stable sheet steel and powder coated from both sides, inside and even outside of the housing. The unit is equipped with an inlet ( 50 mm). A pre-filter mat separates the coarse particles. Afterwards the air is led through the main filter to finally separate the air from the remaining smoke and dust particles. The filtering unit is delivered along with a high-performance high pressure turbine that can be regulated continuously with a potentiometer. After filtration the clean air is reconducted to the working room by means of an outblowing lattice. An automatic filtering monitor indicates the necessary filter change of the filter elements. The change is made uncomplicated customer-friendly by the cover of the unit secured with snap fasteners. A cable with 230 V plug is delivered along with the goods. FILTERCASE SL Connection piece FITERCASE SL Max. volumetric flow of the fan 0-280 m 3 /h Max. pressure 20 000 Pa Suction spigot 2 x 50 mm / 1 x 35 mm Sound level approx. 65 db (A) Separation efficiency > 99 % Filter equipment Pre-filter, main filter with activated carbon Drive system Carbon brush rotor Motor performance 1,1 kw Dimensions (w x d x h) 276 x 390 x 445 mm Weight approx. 15 kg Example of application: Filtercase SL Subject to modifications
7 FILTERCASE LBK Suction- and filtering unit as a mobile unit. The housing is made of sturdy steel sheet and it is provided with a powder coating inside as well as outside. The built-in 3-step filtering system permits the operation for various suction solutions e. g. laser technology, dental technology, electronic industry etc. The filtering unit is equipped with the following filtering stages: a prefilter separates the big particles. Subsequently the air is led through the HEPA-filter (separation degree higher than 99,997 %) where also the remaining fine smoke and dust particles are separated. As a final filtering step the air flow is led through the activated carbon filter. Here most gases are separated. An automatic filter monitoring indicates the necessary filter change. The suction unit is equipped with a high performance maintenancefree high pressure turbine such as a continuous speed control device to adjust the suction power. The unit is delivered along with a 5 m cable and ready to plug. In addition the unit is equipped with an outlet spigot ( 100 mm) in order to lead the air outside if necessary. FILTERCASE LBK Accessories and price list www.teka.eu 3 Filtersteps FILTERCASE LBK Max. volumetric flow of the fan 0-280 m³/h Max. pressure 20 000 Pa Suction and outlet spigot 2 50 mm / 1 x 100 mm Sound level approx. 65 db (A) Separation efficiency 99,997 % Filter equipment Pre-filter, main-filter, activated carbon filter Drive system Carbon brush rotor Motor performance 1,1 kw Dimensions (w x d x h) 380 x 380 x 585 mm Weight approx. 38 kg Suction and outlet spigot, size 100
8 Mobile suction and filter units AIRFILTER MINI An efficient unit with a high volumetric air flow as well as smallest noise emission for working places in calm environment.the sound level corresponds approximately to that of a personal computer. Due to its compact construction it can be used under worktables as well as freestanding and can take up exhaust tubes from 50 to 75 mm. Thanks to its three-stage filtering system it can be used in different sectors: for example with laser systems, for dental and medical technology applications, in the electronics industry, in hospitals and by dermatologists and restorers. AIRFILTER MINI Control unit Suction pipe connections Pre-filter combi-filter AIRFILTER MINI Example of application: AIRFILTER MINI AIRFILTER MINI HD Max. volumetric flow of the fan 0-300 m³/h Max. pressure 21 000 Pa Suction spigot 2 x 50 mm, 1 x 71 mm and 1 x combi-connection 50/75 mm Sound level approx. 58 db (A) Separation efficiency 99,997 % Filter equipment Pre-filter, combi-filter (main filter, activated carbon filter) Drive system Maintenance free motor Motor performance 1,2 kw Dimensions (w x d x h) 365 x 501 x 626 mm Weight 28 kg Subject to modifications
9 SPA series Mobile filter units, which are especially useful for the extraction of laser emissions emerging during the production of stamps. Based on the established LMD series the SPA units ensure a robust industrial use. The new HEPA storage filter guarantees both a high separation efficiency and longevity. As a final element a carbon filter absorbs gases and smells. The units of the SPA series are per standard equipped with an exhaust nozzle ( 125). The units are accessed by means of the new control (AIRCONTROL) which has successfully been implemented into units of the AIRFILTER and LMD series already. Exhaust nozzle, filter monitor, smooth speed control, 5 m mains cable and a SUB D9 plug are also part of the standard equipment. Accessories and price list www.teka.eu SPA 501 main and activated carbon filter SPA series SPA 501 SPA 508 Max. volumetric flow of the fan 0-500 m³/h 320 m³/h Max. pressure 0-21 000 Pa 21 000 Pa Suction spigot 1 x 100 mm Sound level approx. 68 db (A) approx. 65 db (A) Separation efficiency 99,9 % 99,9 % Filter equipment Main filter, activated carbon filter Drive system Maintenance free motor Maintenance free motor Motor performance 2 x 1,2 kw 1,2 kw Dimensions (w x d x h) 365 x 840 x 1 260 mm 365 x 535 x 1 260 mm Weight 95 kg 75 kg SPA 501 with opened filter doors
10 Mobile suction and filter units LMD 508 Filter unit The extraction unit is equipped with maintenance-free, replaceable particle filters for the mechanical separation of dusts and is suitable for laser systems with suction elements as well as for workplaces for soldering. The filter consists of a pre-filter, a high-particulate filter and an activated carbon filter, which is separately built-in in a changeable housing. All filter elements can be taken off individually from the clean side. In addition the units are equipped with a filter monitoring, a full motor protection, a continuous speed control unit and an operation hour meter. A filter lift device is built in as a standard that ensures absolute thightness and concomitantly guarantees the separation degree of the filtering unit. The extraction unit is equipped with a powerful high-pressure turbine. The new control unit of the system (Aircontrol) with text display and a membrane keyboard provide for a userfriendly operation. An acoustic and optical signal as well as the text display point out malfunctions or maintenance signals. LMD 508 The housing is made of stable sheet steel and covered with an inner and an outer powder coating. LMD 508 with opened filter door LMD 508 Max. volumetric flow of the fan 0-320 m³/h Max. pressure 21 000 Pa Suction spigot 2 x 50 mm Sound level approx. 65 db (A) Separation efficiency 99,997% Filter equipment Pre-filter, main filter, activated carbon filter Drive system Maintenance free motor Motor performance 1,2 kw Dimensions (w x d x h) 365 x 501 x 740 mm Weight 45 kg Example of application: LMD 508 Subject to modifications
11 LMD 504 Filter unit An extensive prefilter separates the coarse particles. Afterwards the air is led through the particulate filters where the remaining fine smoke and dusts are separated. As a final filter stage the system is equipped with an additional activated carbon filter for the separation of most of the gases. The housing is made of stable sheet steel and covered with an inner and an outer powder coating. By default a filter lifting mechanism is incorporated into the system that ensures an absolute tightness and thereby the separation efficiency of the filter system. Due to powerful turbines a high suction power can be achieved, but the noise level is kept low. The new control unit of the system (Aircontrol) with text display and a membrane keyboard provides for a user-friendly operation. An acoustic and optical signal as well as the text display point out malfunctions or maintenance signals. The filtered air is led back into the room through a splitter silencer. The system is delivered in a plug-and-play manner with a power cable of 5 meters length. Example of application: LMD 504 Accessories and price list www.teka.eu Splitter silencer LMD 504 Max. volumetric flow of the fan 0-320 m³/h Max. pressure 21 000 Pa Suction spigot 2 x 50 mm Sound level approx. 70 db (A) Separation efficiency 99,997% Filter equipment Pre-filter, main filter, activated carbon filter Drive system Maintenance free motor Motor performance 1,2 kw Dimensions (w x d x h) 365 x 804 x 740 mm Weight 65 kg ControlUnit ControlUnit
12 Mobile suction and filter units Filter units type LFE Filter units type LFE The mobile mid vacuum cartridge filter system can be used for lasering, welding and grinding. It is especially designed for applications with a relatively high particle distribution. Thanks to the special design of the system with a separated exhaust air conduction of the turbine, a low noise level of the filter unit is achieved. The use even in very sensitive areas with low noise emissions can be recommended without hesitation. For the pre-separation of the dusts the air flow is led onto a baffle plate. Then the intake air stream meets the filter cartridge. The dusts are cleaned via compressed air and collected in a generously dimensioned dust collection vessel with a capacity of about 9 litres. The filter cartridge works according to the principle of surface filtration, i.e. the particles are stored on the filter cartridge and cannot penetrate inside the filter material. Before the initial utilisation of the system the cartridge is precoated with a special powder to extend the life of the cartridge. As a final filter stage the system is equipped with an additional activated carbon filter for the separation of most of the gases. The extraction unit is equipped with a powerful high-pressure turbine. The suction power can be adjusted smoothly with the help of a remote control. The minimum revolution of the turbine is 20 %. All operating states of the system can be adjusted and displayed via the display of the remote control. The system additionally is fit out with a central power switch. A major benefit of the unit is that it is equipped with a universal voltage input for 115 V as well as 230 V so that the unit can be used in every country without additional transformers. The intake housing has a connection for 2 x 50 mm including a connection possibility for a continuous precoating device with 80 mm. It is possible due to the SUB D9 interface to control the filter unit via an external device. The delivery includes a power cable of 5 meters length with shock-proof plug and connector for non heating clutch. ControlUnit Filter units type LFE Reverse side LFE 101 Max. volumetric flow of the fan 0-280 m³/h Max. pressure 15 000 Pa Sound level approx. 58 db (A) Separation efficiency 99,997 % Filter equipment filter cartridge, activatd carbon filter Drive system Maintenance free motor Motor performance 0,6 kw Dimensions (w x d x h) 751 x 400 x 1.457 mm Weight 107 kg Subject to modifications
13 HANDYCART Cartridge filter unit Mobile portable high-vacuum extraction unit with manual dedusting or fully automatic pneumatic dedusting. The filter cartridge remains in the unit to prevent dust from reaching the working space. The filter cartridge guarantees a separation efficiency 99 %. The extracted dusts are collected in the dust collector. They can be disposed of by means of an integrated polyethylene bag (optionally available). Standard equipment Automatic speed control High quality GORE-TEX filter cartridge 2 suction nozzles 50 mm Service-friendly maintenance door Dust collecting tray Operating hours meter Optical filter monitoring Available as an option Outlet silencer Adaptable activated carbon cell (use for gases) Large number of accessories Automatic dedusting Accessories and price list www.teka.eu HANDYCART Manual dedusting HANDYCART Cartridge filter unit HANDYCART HK HANDYCART HD Max. volumetric flow of the fan 0-280 m³/h 0-320 m³/h Max. pressure 14 100 Pa 22 600 Pa Motor performance 1,1 kw 1,2 kw Separation efficiency 99 % 99 % Sound level approx. 62 db (A) approx. 62 db (A) Suction spigot 2 x 50 mm 2 x 50 mm Filter equipment GORE-TEX filter cartridge Drive system Carbon brush rotor Maintenance free motor Dimensions (w x d x h) 300 x 300 x 679 mm 300 x 300 x 679 mm Weight approx. 25 kg approx. 28 kg Dust container
14 Mobile suction and filter units filtoo Mechanical filter unit IFA 1102002 A stable steel sheeting construction with continuous powder coating guarantees a maintenance low operation even under challenging conditions. The filtoo can be used in a variety of applications. Laser industry, dental laboratory or electronics industry wherever temporary activities such as lasering, milling or soldering are done, the use of the device makes sense. The unit has four filter stages. The coarse dust particles are caught by the coarse filter, whereas the fine particles remain in the prefilter. The activated carbon filter eliminates unpleasant odours. The following main filter separates the very fine particles to a degree exceeding 99 per cent. Coarse particles are separated in the prefilter. Afterwards the air is led through the particulate air filter where the remaining fine smoke and dust particles are separated. The seal seat lift mechanism guarantees absolute tightness and thereby the high separation efficiency of the filter unit. The air outlet on the back of the device takes place upwards via the air outlet grille. Thus from a distance of 1 meter no disturbing airflow is perceivable. The unit is equipped with a powerful ventilation fan with high vacuum which guarantees a high volume flow even when the filter is saturated. filtoo Standard: 3 m extraction arm Films about the unit on TEKA TV channel Accessory: suction hose 4 filter stages filtoo Max. volumetric flow of the fan 2 500 m³/h Max. pressure 2 500 Pa Motor performance 1,1 kw Separation efficiency 99 % Filter equipment Coarse filter, Pre-filter, activatd carbon filter, Main filter Sound level approx. 68 db(a) Dimensions (w x d x h) 580 x 580 x 900 mm Weight approx. 80 kg Subject to modifications
15 CARTMASTER Cartridge filter unit Stationary, mobile filter units with fullyautomatic, contamination-dependent filter dedusting system. This unit is particularly suitable for the use at fully automatic machines which should be extremely durable and long-lasting. It is suitable for laser cutting and laser engraving with high erosion degree and also for milling. The high-quality filter cartridges ensure highest dust separation and filter life times. A contamination-dependent filter dedusting and follow-updedusting system during fan stops are integrated ex works. These types of dust are then disposed of by means of inserted PE-bags. In addition the unit can be equipped with an exhaust air muffler. An activated carbon filter-cell can be integrated optionally so that it can even be used for gases. This unit may be equipped with other kinds of filter mediums or fans as well. Operating hours meter and acoustic filter steering are also part of the standard equipment of the units. The cleaned dust is collected in the dust bins. CARTMASTER Accessories and price list www.teka.eu suction hose CARTMASTER CARTMASTER HV CARTMASTER ND Max. volumetric flow of the fan 500 m³/h 3 000 m³/h Max. pressure 10 000 Pa 2 800 Pa Suction spigot 3 x 50 mm 160 mm Sound level approx. 74 db (A) approx. 70 db (A) Separation efficiency > 99 % > 99 % Filter equipment Pre-separator, Main filter, filter cartridge class BGIA M Drive system Maintenance free motor Maintenance free motor Motor performance 3,0 kw 1,5 kw Dimensions (w x d x h) 665 x 1 100 x 1 540 mm 665 x 1 100 x 1 270 mm Weight approx. 135 kg approx. 145 kg Funnel nozzle with magnetic base 3 suction pipe 50 mm
16 Central suction and filter units FILTERCUBE 2N / 2H Central filter units The stationary filter units FILTERCUBE 2N and 2H are certified according to DIN EN ISO 15012-1 IFA. The separation efficiency is 99 %. The released fumes and dusts are extracted via appropriate suction elements and guided into the filter unit. A baffle plate with large surface serves as pre-separator and distributes the particles onto the whole filter surface. All filter units are fitted with hanging filter cartridges. Thus, the admission of the cartridges is carried out on the side. Heavy particles fall down directly into the dust container. The filter cartridges are precoated ex works with a special filter medium. This increases their lifetime compared to standard cartridges considerably. Standard equipment Fully automatic dedusting via POWER-SPRAY SYSTEM Display control unit 2 extensive filter cartridges with 600 mm each (type 2N) or with 1 200 mm length (type 2H) Dust container with tightly fitting lifting device Fan within a soundproof housing Integrated compressed air container Control unit for the fan Maintenance doors for all operating areas Maintenance door in the filter cartridge housing with inspection window made of laminated safety glass IFA 0605013 Schweißrauchabscheideklasse W3 EN ISO 15012-1 W 3 W 3 η 99 % FILTERCUBE 2N control unit filter cartridges FILTERCUBE 2N / 2H Central filter units Max. volumetric flow of the fan 500 5 000 m³/h Max. pressure 3 000 10 000 Pa Motor performance 1,5 4,0 kw Separation efficiency 99 % Sound level approx. 72 db(a) Dimensions (w x d x h) 665 983 2 070 2 670 mm Weight approx. 280 350 kg Subject to modifications
17 FILTERCUBE 4N / 4H Central filter units The stationary filter units FILTERCUBE 2N and 2H are certified according to DIN EN ISO 15012-1 IFA. The separation efficiency is 99 %. The released fumes and dusts are extracted via appropriate suction elements and guided into the filter unit. A baffle plate with large surface serves as pre-separator and distributes the particles on the whole filter surface. All filter units are fitted with hanging filter cartridges. Thus, the admission of the cartridges is carried out on the side. Heavy particles fall down directly into the dust container. The filter cartridges are precoated ex works with a special filter medium. This increases their lifetime compared to standard cartridges considerably. Standard equipment Fully automatic dedusting via POWER-SPRAY SYSTEM Display control unit 2 extensive filter cartridges with 600 mm each (type 2N) or with 1 200 mm length (type 2H) Dust container with tightly fitting lifting device Fan within a soundproof housing Integrated compressed air container Control unit for the fan Maintenance doors for all operating areas Maintenance door in the filter cartridge housing with inspection window made of laminated safety glass Accessories and price list www.teka.eu FILTERCUBE 4H EN ISO 15012-1 W 3 W 3 η 99 % IFA 0605012 Schweißrauchabscheideklasse W3 Inlet nozzle Precoat FILTERCUBE 4N / 4H Central filter units Max. volumetric flow of the fan 500 10 000 m³/h Max. pressure 3 000 10 000 Pa Motor performance 2,2 11,0 kwv Separation efficiency 99 % Sound level approx. 72 db(a) Dimensions (w x d x h) 800 800 2 320 2 920 mm Particles Filter element Displacement body
18 Absaugarme Suction arms Alsident ALSIDENT SYSTEM 50 - aluminium, table mounting The mini suction arms are suitable for air volume up to ca. 400 m 3 /h. They are available for assembly on a table, wall or ceiling. There are a large number of uses for the suction arms such as: electrical engineering, electronics, precision technology, laser technology, chemistry, pharmacy, laboratories, hospitals, restorers, etc., and a lot more. The smooth-running, self-supporting joints allow them to be positioned anywhere at work. Through the built-in throttle valve the volume stream can be varied for all uses. Suction hood flat Suction hood round ALSIDENT SYSTEM 50 - ESD version, table mounting Wall bracket Table bracket ALSIDENT SYSTEM 75 - antistatic, ceiling and wall mounting ALSIDENT EXTRACTION CABINET- Type 1 medium Subject to modifications Suction hoods in different shapes and sizes
19 suction arm Optiflex Because of the patented hose the suction arm is self-supporting in the set position. There are no internal joints, so that a nearly smooth air stream is ensured. OPTIFLEX can be installed in the static version either directly on our units or (by a drilling through the working tabletop) onto a table. The optional available table bracket allows for an easy installation on tables by screw clips. A wall bracket makes an installation of the OPTIFLEX at walls or machines possible. In those places where a positioning of hoses or other mini-arms is not possible OPTIFLEX solves the problem. You can find more accessories, extraction arms and nozzles on www.teka.eu. System Optiflex suction arm Accessories and price list www.teka.eu Wall and Table bracket Example of application Optiflex suction arm and LMD 508
20 Service Seminar rooms TEKAffee Communication centre Planning In order to realize customized projects, our highly qualified employees are at your disposal. We have our own employees in all sales areas and we are swiftly available for you everywhere. Individual conditions If you need larger quantities or if you look for products that you do not find in this catalogue, please contact us. We are glad to submit you an individual quotation. Production Close cooperation between the different departments guarantees a trouble-free processing of customized projects. Delivery The company s own vehicles, logistics companies and courier services enable worldwide delivery of the TEKA products. Assembly Our qualified employees take care of the assembly and the turnkey-handover of suction and filter units on request. Warranty As standard, we offer you a warranty period of 12 months on all products listed in this catalogue. Service Our in-house service department is at your disposal. By conclusion of a maintenance contract, the warranty period can be extended to 36 months. After Sales Even after purchase, we do not leave you alone. Our team is glad to answer your questions. You can also contact us at our international hotline: +49 2863-9282-0. Exhibition Training centre Exhibition
Notizen Produktkataloge 21 Product catalogues for suction and filtering systems: Laser cutting, soldering, Restoring and dental laboratory, etc. are available for downloading on www.teka.eu TEKA presents its app Numerous services are available on the road Get the newest trends and topics from TEKA this very day on your iphone or ipad. Catalogues, products or news with the TEKA Unternehmensapp you get all the information about the expert of air pollution control at the workplace even while being on the road. It is suitable for apple products and can be downloaded for free in German on itunes by using the link http://itunes.apple.com/us/app/id563912300. Please also visit www.teka.eu
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We set air in motion Your TEKA partner: TEKA Absaug- und Entsorgungstechnologie GmbH Industriestraße 13 46342 Velen Germany P.O. Box 1137 46334 Velen Tel. + 49 28 63 92 82-0 Fax + 49 28 63 92 82-72 info@teka.eu www.teka.eu Find out more at www.teka.eu