DE-ICING / ANTI-ICING VEHICLES

DIV SYSTEM

 

GENERAL

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The DIV family are vehicles designed for de-icing/anti-icing of aircraft but can also be used for towing and as service platform for work at high levels. The vehicles are normally one-man operated.

The DIV family is designed in a modular concept and can easily be adapted for various needs. This results in a low cost - high performance equipment. Standard high quality components are used where it is possible. Much consideration is given to facilitate maintenance and to provide good access for service and inspection. Modules such as engine and fluid pumps can easily be removed if needed.

The low profile of the chassis permits a very good direct view backwards. It is also possible to use a normal truck garage for parking and service.

The steel in the frame and lift is intended for use in temperatures down to -40° C (-40°F). Most of the steel surfaces are sandblasted and then painted with 2-component undercoat and top coat paints. All fluid tanks (water, type 1, type 2/4) are made of stainless steel.

All system components, hydraulic hoses and electrical cables are marked as in the diagrams. This makes trouble shooting more efficient.and maintenance work faster and easier.

The vehicle is built on a solid frame with the fluid tanks placed on the middle. The diesel engine with hydraulic pumps, fluid pumps, fuel and hydraulic tanks are all placed on the rear of the frame. Easy access is provided for all systems behind sound insulated hoods.

The DIV family has as standard a rear wheel drive and front wheel steering. The traction system with hydraulic wheel motors allows simple and accurate maneuvering. Parking and emergency brakes use a spring loaded mechanical system. The emergency brakes are automatically engaged if an engine stop occurs, or if a hydraulic hose in the traction system breaks.

Since both the traction and fluid pumps are hydraulically powered only one diesel engine is required. This results in low fuel consumption, reduced exhaust emission and low service costs.

The lift normally consists of two booms, a main boom and an inner extension boom. The basket is connected to the extension boom and kept in a horizontal position by a hydraulic slave system. The lift is turned by two hydraulic cylinders. All lift movements are controlled by proportional valves and protected against hose breakage by safety valves.

Operating the vehicle and the lift is normally done by a digital control system that automatically adjusts the operators stick movements resulting in smooth acceleration and deceleration. This means that inexperienced operators, after short training, can operate the vehicle. Parallel with the digital system there is an analog system which is used if the digital system fails.

As an option the basket can be equipped with a hard-top which can be raised and lowered. In the raised position there is enough space between the basket and the hard-top to work with the spray guns and in the lowered position the operator is protected from bad weather.

The fluid tanks are mounted in the middle and front of the vehicle. This results in good stability.There are a number of tank configurations available. The water and type 1 fluid tanks are well insulated and normally equipped with immersion heaters, thermometers and a warning signal for low fluid level. All tanks have illuminated level indicators.

The pumps are powered by a pressure compensated hydraulic system which results in a constant fluid pressure independent of the flow. The spray-guns are normally hand held and are placed in the basket. The fluid pumps are easily accessed by opening the big side panels. There are also a number of different fluid mixing system. All mixing systems can also provide 100% type 1 fluid (i.e. for freeze protection) and 100% water.

The type 1/water system from pump to spay-gun can be heated before spraying. This is done by opening a valve which returns the fluid to the water tank. When the fluid is hot, the valve is closed and the de-icing operation can start. This procedure saves the environment and makes the de-icing more efficient.

About 80% of all de-icing is carried out at temperatures down to -5 °C (23°F). It is also in this temperature range that heavy and wet snow falls. This type of de-icing requires a relative low glycol concentration and shall always be followed by an anti-icing with type 2 or type 4 fluid. By using a mixing system the economical and environmental benefit of the two step de/anti icing can be utilized. Less glycol is used compared to the conventional pre-mixed systems, and less money is spent on buying glycol and the destruction of used glycol. With the automatic mixing system human errors also are avoided.

All fluid systems can as an option be provided with a printing device that prints a receipt containing information about sprayed volumes, the mixture in percentage, flight number, date and other information specified by the customer.

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                       DIV 80                                   DIV 110                                    DIV 140

 

                            For dimension drawings, point and click on any of the silhouettes above

                            Specifications

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