•  A mixture of refrigerant and oil enters the bottom of the evaporator through the evaporator inlet tube and is routed so it flows through the partitioned first four plate/fin sections.

•  The next four plate/fin sections are partitioned to force the refrigerant to flow toward the other end of the evaporator.

•  The next five plate/fin sections are partitioned to force the refrigerant to flow toward the bottom of the evaporator.

•  Refrigerant then continues through to the remaining five plate/fin sections and then moves out of the evaporator through the evaporator outlet tube.

•  This W-pass flow pattern transfers the flow of refrigerant and oil through the evaporator.

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