Patent ID: 8683817

Claim:
A multiple refrigerant circuit cooling system comprising: at least a first refrigerant circuit and a second refrigerant circuit, each of said first and second refrigerant circuits comprising a compressor, a condenser, an expansion device and an evaporator connected in refrigerant flow communication; the condensers of the first and second refrigerant circuits each comprising condenser coils having exterior surfaces and each condenser comprising at least one fan for drawing ambient air across the exterior surfaces of its respective condenser coil; the exterior surfaces of the condenser coil of the condenser of the first refrigerant circuit being in fluid communication with the at least one fan of the condenser of the second refrigerant circuit to provide reduced airflow across the exterior surfaces of the condenser coil of the condenser of the first refrigerant circuit when a discharge pressure of the compressor of the first refrigerant circuit is below a compressor discharge pressure threshold value.