Low Pressure Cutout Switch Definition

Switch remains closed at 5 psi or more when pressure drops below 5 psi switch will open and cut off the power to the pump.

Low pressure cutout switch definition.

An automotive air conditioner s pressure switch cycles the vehicle s compressor on and off when the refrigerant pressure falls below an acceptable level. Mounted on low pressure side of compressor. To control box temperature with a low pressure control the system must use a thermostatic expansion valve non bleed type. Mounted on high pressure side of compressor.

Low pressure cut out to protect the compressor against low pressure in the system and to avoid the ingress of air into the system if a vacuum is generated in the lines a low pressure cut out is provided. Low pressure switch lps installs on the inlet side of the booster pump and will shut off the pump if the feed water is interrupted. Only leaking air conditioning systems have low refrigerant levels. This protects the compressor from damage.

The low pressure shut off switches are available with low pressure cut off point of approximately 8 to 10 lbs. Refrigerant does not wear out or evaporate. By cycling the compressor in response to the suction low side pressure box temperature can be controlled. Low pressure cutoff switch technical details pressure range 20 to 65 psi.

Requires wire harness 21 028 sold separately. This type of control is most popular in small refrigerated boxes such as beer coolers. Allows compressor to resume when pressure rises above set point. Low pressure cutout switch prevents system damage due to low pressure or low refrigerant charge by disabling a c compressor when pressure drops below reset point.