Pressure switch functions and Low pressure switch functions
Depending on how they operate, refrigeration system pressure switches are divided into high pressure or high pressure (HPS) and low pressure or low pressure (LPS). Pressure switches are commonly used to prevent damage to components due to increased pressure in situations such as condenser clogging. Low pressure switch when refrigerant pressure is reduced. (For example, when reducing refrigerant in pipes) interrupts the cycle. As a result, things like evaporator freezing are prevented. Of course, preventing this from happening depends on the pressure set in the pressure switch. In addition, the pressure switch can be used to control the system and turn it on and off. / Pressure switch
Various equipments are used to protect the parts of a refrigeration cycle, and the pressure switch is one of these equipments. The pressure switch has the task of disconnecting or connecting the system if the pressure reaches a certain level to prevent damage to the system equipment, especially the compressor.
Types of pressure switches
There are generally two types of pressure switches: electromechanical and solid state. In electromechanical switches, different types of sensors are used to measure pressure, which depending on the characteristics of this sensor, the working range of the switch is determined. Some of these models are as follows:
Pressure diaphragm switch
In this type of pressure switch, a metal diaphragm is used to activate the switch. Such switches can operate up to 10 atmospheres. And have an error of 0.5%. The downside of these pressure switches is this. Which can respond to a small number of cycles in a given time (less than 25 cycles per minute).