device for reporting of needs for maintaining air conditioning air for industrial use and air conditioner equipped with this device

摘要

the locating device of maintenance according to the present invention is based on the principle that,when it is to form an accumulation of dirt on the fins of the heat exchanger air / fluid heating ambient air.it is to be a change in the pressure of the fluid circulating in the high pressure circuit portion of a refrigerator with a temperature change of the fluid.the deviation of pressure or the deviation of temperature from the standard value are used, since the pressure switch normally connected to the high side pressure of the circuit refrigeratoror by an appropriate thermostat to activate a signalling circuit which, depending on the case,provides a signal light and / or an acoustic signal and / or an electrical signal applied to a plc, in order to warn the operator about the need to provide maintenance operations chow, for example, the cleaning of the fins of the heat exchanger.