How does a Danfoss pressure switch work?
Danfoss pressure switches are electromechanical controls and limiters, that control the pressure of air and liquids within a given pressure range. All contact systems in Danfoss regulating units incorporate a "snap-action" system that maintains the contact force until the moment of contact break.
How many bellows does an oil pressure differential switch have?
The switch has one bellows connected to the discharge oil line of the compressor oil pump and the other connected to the compressor crankcase suction refrigeration pressure. The switch is set to open the electrical circuit and to stop the compressor when the oil pressure drops to a low-pressure set point.
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