Low Pressure Cutout Switch Definition

This type of control is most popular in small refrigerated boxes such as beer coolers.

Low pressure cutout switch definition.

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. The low pressure shut off switches are available with low pressure cut off point of approximately 8 to 10 lbs. Only leaking air conditioning systems have low refrigerant levels. Square d by schneider electric 9013fsg2j24m4 air pump pressure switch nema 1 40 60 psi pressure setting 20 65 psi cut out 15 30 psi adjustable differential low pressure cut off 4 6 out of 5 stars 210.

Requires wire harness 21 028 sold separately. Low pressure cutoff switch technical details pressure range 20 to 65 psi. 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. Mounted on low pressure side of compressor.

By cycling the compressor in response to the suction low side pressure box temperature can be controlled. The switch arm can be pressed and the cut out reset after the cause of the over pressure has been found and rectified. To control box temperature with a low pressure control the system must use a thermostatic expansion valve non bleed type. Refrigerant does not wear out or evaporate.

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. Allows compressor to resume when pressure rises above set point. This protects the compressor from damage. Mounted on high pressure side of compressor.