Unitary machine room

Claim 1

A REFRIGERATION SYSTEM MACHINE ROOM COMPRISING IN A UNITARY ASSEMBLY A RIGID BASE FRAME, AN EQUIPMENT RACK SECURED ON SAID BASE FRAME, A PLURALITY OF REFRIGERANT-CONTAINING CONDENSING UNITS MOUNTED ON SAID RACK IN APPROXIMATELY THE SAME VERTICAL PLANE, EACH OF SAID UNITS INCLUDING A COMPRESSOR AND CONDENSER AND MEANS FOR MOVING COOLING AIR REARWARDLY OVER AND PAST THE CONDENSER AND COMPRESSOR, A PLURALITY OF PAIRED PRESSURE AND SUCTION REFRIGERANT CONDUITS WITH EACH PAIR OF PRESSURE AND SUCTION CONDUITS CONNECTED TO A DIFFERENT ONE OF THE UNITS, VALVE MEANS BETWEEN EACH UNIT AND THE CONDUITS CONNECTED THERETO, MEANS DEFINING AIR INLET OPENINGS EACH FORWARD OF AND ALIGNED WITH ONE OF THE CONDENSING UNITS, A PLURALITY OF LOUVERS PIVOTALLY MOUNTED IN EACH OPENING FOR CLOSING AND UNCLOSING THE OPENING, A PLURALITY OF FLUID MOTOR MEANS EACH CONNECTED TO THE PRESSURE CONDUIT OF ONE OF THE UNITS RESPONSIVE TO CHANGES IN PRESSURE OF REFRIGERANT THEREIN AND ALSO CONNECTED TO THE LOUVERS IN THE ALIGNED OPENING FOR RESPECTIVELY OPENING AND CLOSING THE LOUVERS UPON INCREASE AND DECREASE OF SAID PRESSURE, ELECTRICAL CIRCUIT MEANS FOR EACH OF THE CONDENSING UNITS INCLUDING SUPPLY LEADS AND COMMON CONNECTION MEANS TO WHICH SAID LEADS ARE CONNECTED, AND AN ENCLOSURE MOUNTED ON SAID BASE FRAME FOR SAID RACK, UNITS, CONDUITS, AND CONNECTION MEANS, SAID ENCLOSURE HAVING AIR INLET OPENINGS REGISTERING WITH SAID OPENINGS AND ALSO HAVING AIR EXHAUST MEANS REARWARDLY OF THE RACK.