LEAKAGE TEST IN AN AIR CONDITIONER
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United States of America Patent
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Issued Date -
Sep 17, 2009
app pub date -
Nov 2, 2007
filing date -
Nov 6, 2006
priority date (Note) -
Abandoned
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Abstract
The invention relates to a method for servicing an air conditioner, particularly in a motor vehicle. According to the method, a test gas is applied at a defined pressure to the air conditioner cooling circuit that is depleted of coolant in order to perform a tightness test, and changes in the pressure are recorded and evaluated during a certain interval. The aim of the invention is to further develop such a method in such a way that the same can be carried out in a highly automated manner, rapidly, and without harming the environment. The aim is achieved by using a gas mixture of nitrogen and hydrogen as a test gas and inspecting the cooling circuit by means of a hydrogen probe once a drop in pressure has been recorded.
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