Crankcase pressure regulating valves are designed to prevent overloading of the compressor motor by limiting the crankcase pressure during and after a defrost cycle or after a normal shutdown period.
The function of the crankcase pressure regulating valve is similar to the practice of manually throttling the compressor suction service valve until the machine can handle the load.
- Closes on rise of outlet pressure
- Connection: M Flare SAE or ODF, 90°
- Capacity: R22, 100°F condensing, 10°F superheat, 0°F subcooling, -10°F evaporator,
CRO6—0.66 tons,
CRO10—2.23 tons - Valve set at 30 psi, 1 lb. ? P
CAUTION
Do not use with pressure limit expansion valves as similar pressure settings may greatly extend pulldown time.