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...Technical Information Repair / Service Safety notes / Handling refrigerant - Always wear protective goggles and protective glove s! At normal atmospheric pressure and ambient temperatures, liquid refrigerant evaporates so suddenly that freezing of tissue can occur in the event of...

...Technical Information Removal and installation instructions Air conditioning system Before spare parts are removed or installed, check that the connections, fastening material and other installation-related characteristics are identical. When replacing the components, always use new...

...Technical Information PTC booster heater General points On account of the high efficiency of modern, direct injection engines (e.g. TDI), dissipated heat is no longer sufficient for heating up the inside of the vehicle quickly on cold days. PTC booster heaters (Fig. 1), which are insta...

...Pressure Switches - General Pressure switches serve to protect the air conditioning from damage resulting from excessively high or low pressures. Different types are: low pressure switches, high pressure switches and trinary switches. Trinary switch es contain the high and low pressu...

...Technical Information PAO-Oil 68 / PAO-Oil 68 Plus UV Universal compressor oil PAO-Oil 68 is an air conditioning compressor oil for universal use, available exclusively from Behr Hella Service . In the past, garages have had to stock up with different oils for servicing air conditi...

...Technical Information Oil coolers General points The cooling of oils under a high thermal load (engine, gear, steering aid) by oil coolers or the guarantee of an almost constant temperature results in significant advantages. The intervals between oil changes can be extended and the serv...

...Interior temperature sensor Unsatisfactory temperature regulation through dirty sensors The interior temperature sensor is fixed in the air-stream of a miniature fan (mostly in the control unit). It sends the temperature of the interior air as a resistance value to the ECU (the measurem...

...Technical Information Crimping tool There is a new crimping tool in the Behr Hella Service range which meets the requirements of new standards and requirements for setting up connections. Tests have shown that the old barb design in combination with worm drive clamps or iron rings an...

...Technical Information Heat exchanger General points The heat exchanger is installed in the heating box of the vehicle interior and has coolant flowing through it. The interior air is routed through the heat exchanger and thus heated up. Structure/function Like the coolant radiator,...

...Fixed Orifice Tube General In contrast to circuits with an expansion valve the liquid refrigerant is injected into the evaporator by an orifice tube. The orifice tube is installed primarily in air conditioning systems with a variable displacement compressor.Function The fixed orifice tube...



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