The flow switch is used in air conditioning
???Flow switch can be a good solution and maintenance of this problem, the German Kewell plunger flow switch FP53 series of the principle of structure: on-line installation, mechanical flow switch for liquid or gas media. Sturdy plastic, aluminum or stainless steel housing optional. The medium pushes the plunger spring to the set position to exert a passive on-off signal by the magnetic field acting on the reed switch.
Hello, air conditioning water main pipe on the "water switch" is used to detect the main channel is normal;
If the pump fails or the pipeline is blocked, the water flow is too small, the water flow switch will act, to the host "do not boot" signal to protect the host. However, when the water flow switch is damaged or artificial termination of the time, often cause the host a greater failure. First of all, the central air-conditioning system is to rely on the flow of water to take the cold and heat to ensure a reliable heat exchanger heat transfer, there is no water there is no so-called refrigeration or heating. Secondly, when there is no water flow or water flow, the evaporator load is reduced and the evaporation temperature is reduced for the evaporator, and if the compressor is continuously operated, the evaporator will freeze. If the evaporator can not be timely antifreeze protection, the evaporator will likely burst, resulting in the cooling system of water side and refrigerant side collusion, the entire refrigeration system scrapped. In addition, if the system's water flow is too low, will lead to long-term low return pressure, the compressor discharge of lubricants can not be successfully returned to the compressor may lead to compressor "biting cylinder." When the water flow or the water flow is small, the condensing temperature and the pressure rise for the condenser, resulting in a significant reduction in the flow rate of the refrigerant passing through the expansion valve through the expansion valve and a decrease in the cooling capacity.
