Operating Function :
Type MP is a single pole double throw (SPDT) pressure control for stopping and starting large and small refrigeration compressors, using R12, R22, R40 & R717 refrigerants. Construction is simple and sturdy, and the device is enclosed in a dust proof mild steel casing. All parts are rust proofed and designed for long life. Starting and stopping pressures can be set independently, and the device has a clearly read pressure range scale.