Exhaust Discharge Systems
Service Units and Shelfs
Electric, Water and Gaz Systems
• Sink and Water
• Emergency Showers
The benches have been designed to allow for easy distribution of services throughout the benches. When needed the services can be reached easily.
There is a wide variety of electrical material available. Depending on the type of laboratory different safety classes can be applied. It starts with equipment according to the IP-44 standard. If more stringent safety demands are in place equipment according to IP-55 standard is available. In special cases we also can supply EX-proof material.
|Electrical Armatures to be used at the benches are generally Earthed Plugs, UPS Plugs, 3-Phase Plugs, Data Sockets and Telephone Sockets. These armatures can be installed as single or as groups (2 or 4). It also possible to group different sockets in a single armature (e.g. earthed and UPS, data and telephone)|
|Fuse boxes can be mounted on the benches. They can be used to isolate the bench. It further allows easy access for the users. Fuse boxes are available in different size depending on the type of fuses used and the amount of groups needed.|
|Switches, Inverters, Thermic Switch and Emergency Switch are the equipment to control other systems like Lighting Armatures, Fume Cupboards and Fume Canopies.|
|Emergency Switches are used to be able to switch off Fume Cupboards in case of emergency. Thermic Switches are used for the fans of Extraction Arms and Fume Canopies, which work on single-step speed. Thermic relays and switches are placed on the inside of energy units where they can be easily reached in case of necessity.|
SERVICES – ELECTRICAL CABLES
We offer three different ways to route electrical cables through the benches
• By using simple cable channels
• By using energy units
• By using energy units in combination with service columns
ALTERNATIVE 1: If energy units on the bench are not required. The sockets will be installed in a cable channel that will be mounted on top of the bench. The supply cables will be routed through the same cable channel. If needed also a fuse box can be installed in the cable channel.
ALTERNATIVE 2: The sockets have been mounted in energy units. The supply cables are to be made available at the head of the bench. The cables are routed through the benches by making use of the energy unit’s provisions.
ALTERNATIVE 3: The sockets have been mounted in energy units. The supply cables are to be made available above the false ceiling. The cables are routed through the service column into the benches. It is further routed through the bench by making use of the energy unit’s provisions. On the service column a fuse box can be used to isolate the bench.
The supply cable is the cable that feed all the systems inside a bench. In most cases a single piece of 5 x 4 (L1+L2+L3+N+PE) cable must be routed to a location above the bench, preferably near the service column. This cable will be routed through the service column into the fuse box. All cabling within the benches can be done by us. The supply cable is connected to the fuse box (IP 55) mounted on the service column. The fuse box contains a 3x32A (alternative amperages are available) for the supply cable. The phases are split up to create 240V protected by 1x16A fuses. Each 16A fuse protects a double socket. The cables are routed inside the energy unit by using cable trunking. The sockets are mounted inside the front panels of the energy units. Those panels can be easily opened for (maintenance) access. Alternative systems, voltages and distribution can be offered. Contact us with your specific requirements and we will find a solution.
En önemli ve dikkat edilmesi gereken husus ise Laboratuvarların fiziksel şartlarına göre en uygun koruma standartlarına sahip armatür seçimidir.
Genel olarak IP – 44 veya IP 55 koruma standardına sahip armatürler kullanıldığı gibi, gerekli durumlarda Ex-Proof armatürlerde kullanılabilir. Koruma sınıfına göre tezgah içi kablolamalarıda bu standartlarda yapılmaktadır. Dolayısı ile laboratuvarların ana elektrik tesisatı da bu standartlara uygun hale getirilmelidir.
Major parts of a waters system are;
• Sinks and Cup Sinks • Water Taps
• Peg Boards
• Eye and body Showers
• Installation and connections
Sinks are available in a large variety. They are available in different sizes but also in different materials. The choice of material is depending on the use of the cup sink and in some instances your choice of worktop. Material available are;
• Epoxy Resin
• Stainless Steel
Polypropylene Sinks and Cup Sinks are generally used when placed in worktops such as Trespa®, Compact and Corian®. The sinks have an excellent resistance against acid and alkali’s. It also has a high resistance against scratches. The siphons for of the sink are also made of Polypropylene and produced as a set. For the larger sinks there is overflow protection available and sink plug.
The larger sinks are normally used for cleaning purposes. Cup sinks are used as entrance reservoir of circulation water systems or for discharging water coming from water cooled equipment set-ups.
Stoneware Sink and Cup Sinks are used inside Stoneware Worktops. It has a high resistance against acid and alkali. It also has a high level resistance against scratches and high temperature. The siphons of the sinks are made polypropylene. They are in general used at Chemical Laboratories.
Cup Sinks are generally used as entrance reservoir in circulation water systems or as discharging facility for water cooled experiments.
Epoxy Resin Sinks and Cup Sinks are used in Epoxy Resin Worktops. It has good resistance against acid and alkalis. It has a high level resistance against scratch and high temperatures. The siphons of the sinks are polypropylene. It is generally used in Chemical Laboratories.
Stainless Steel Sink and Cup Sinks are made as an integral part of a Stainless Steel Worktop. It has good resistance against acid and alkalis. It has a high level resistance against scratch and high temperatures. The siphons of the sinks are polypropylene. It is generally used in Chemical Laboratories
Four types of water taps are available as standard;
• Mix Water Tap (Hot/Cold)
• Cold Water Tap
• Demineralized Water Tap
• Distilled Water Tap
Different models are available depending on installation location:
• Bench installed
• Panel installed
• Fume Hood installed
The body of the all water taps are made of brass material and epoxy painted.
The mix water and cold water taps are normally connected by flexible connection. Demineralized water taps use polypropylene tubing and connections. Distilled water taps use stainless steel tubing and connections.
All taps are colour coded according to EN 13792.
Pegboards are utilized at benches with sinks or at sink units. The pegboards are made of polypropylene. They have a drip cup at the bottom of the board. The water collected, is guided to the sink by means of a discharging hose. Dimensions;
28 Pegs on Pegboard with dimensions 600×450 mm
43 Pegs on Pegboard with dimensions 900×450 mm
58 Pegs on Pegboard with dimensions 1200×450 mm
A boiler can be provided to produce hot water for the mix taps. The boilers avoid the necessity of running long hot water lines through the building. Boilers of 10 or 15 litres are available. The boilers can be placed in the cabinets under the sink. They work on 220V electricity a 16A breaker is sufficient to protect the boiler. Waste Bins can be installed to the door of an under bench cabinet. When the door is opened, the cover of the bin opens automatically. There are stainless and PP models available.
If people are exposed to chemical liquids, fire or steam, the in most cases the first emergency treatment is washing with plenty of water. For these emergencies we have 3 types of showers which are Eye Wash, Body Shower and combined Eye Wash & Body Shower.
There are various models available. The most common eye-wash models are;
• On wall, double type with bowl
• On bench, single or double type
• On wall, single type
• On floor (pedestal), double type with bowl
Also for emergency showers there are various models
• Wall mounted
• Wall mounted, above door
• Floor standing
• Floor standing combined with eye wash
Some of the models can be delivered with optional foot operation.
A Gas systems has been divided 4 main groups;
• Flammable Gas Fittings
• Technical Gas Fittings
• Pressure Reducers
Gas Fittings are available in three types;
• Installed on Bench
• Installed on Panel
• Installed in Fume Cupboard
All Gas Fittings bodies are produced of brass material and painted with epoxy. Fittings which are completely made of brass are suitable for gases up to class 5.0. For gases of higher purity fittings are available where the inside, parts that come into contact with the gas, is made of stainless steel. The fittings are suitable for pure gases of class 5.5 and 6.0.
For gases of purity 5.0 or lower copper tubing can be used. For gases of higher purity stainless steel is advised. The fittings are identified by a colour coding. They follow the same, EN 13792, standard colour coding as the water fittings.
Manifolds and Pressure Reducers
Many gases have a cylinder pressure of around 230 bars. Manifolds are used to reduce the pressure to lower values before entering the laboratory. In most cases the pressure will be reduce back to 10-12 bars. There are different manifolds available. The choice is depending on gas consumption, convenience and amount of gas cylinders. There are single position manifolds and 2×1 or 2×2 manifolds (2 cylinders on the left and 2 cylinders on the right side). The manifolds are available in manual and (semi) automatic types. For special projects other configurations are possible. Some of the manifold models are equipped with sensor and can be connected to an alarm box. Other safety features are available depending on the requirements. Equipment like flame arresters, flow limiters, non-return valves can be installed in the Gas Distribution System (GDS).
The high pressure gas cylinders are, in most cases, put on the outside of the laboratory building. There the cylinders will be placed in a gas cylinder shelter or in gas cylinder cabinets. We can supply those cabinets.
Depending on the material used for the GDS tubing can be connected by using fittings (Swagelok or similar), soldered (copper) or welded (copper or stainless steel). For Stainless Steel orbital welding is commonly used.
Further downstream the gases are further reduced in pressure. For this application we have different pressure reducer available. Some types can be installed on the furniture panels, others can be mounted on a wall or inside a cabinet. The pressure reducers can lower the pressure from 10-12 bars back to 1.5-8 bars. These pressure reducers allow you, when strategically placed, to have different pressures at different locations in the laboratory. If you combine the pressure reducers with an open/close valve it allows you to “block-in” parts of the GDS. This is convenient for maintenance or modification purposes. It prevents that the whole GDS has to be switched off and depressurized.
In most projects two types of tubing is used copper and stainless steel. Depending on material and project requirements connections can be made in several ways:
• Compression Fittings (Swagelok type)
• Oxygen welding
• Orbital Welding
Tubing inside the bench normally vary between 1/4” and 3/8”. It is also possible to request for other sizes or for metric sizes. Tubing outside of the bench normally vary between 3/8”and 1/2”. Also here it is possible to have tube dimensions in metric or pipes of smaller/larger diameter.
After installation the system is pressure tested with Nitrogen (or another inert gas) at 1.5 times the normal pressure for eight hours. Other test can be requested.