Heatcraft Refrigeration Products LLC

Patrick M Bailey

Ira Zelman Richter

Donald Victor McNemar

Raynald C Clarke

A method for affecting a scheduled defrost operation for a refrigeration system includes the steps of: (a) after an extant the scheduled defrost operation commences, evaluating at least one predetermined parameter relating to operation of the refrigeration system; (b) if the at least one predetermined parameter manifests a behavior of at least one first predetermined nature over at least one first time interval, continuing the extant scheduled defrost operation; and (c) if the at least one predetermined parameter manifests a behavior of at least one second predetermined nature over at least one second time interval, discontinuing the extant scheduled defrost operation.

Method and apparatus for affecting defrost operations for a refrigeration system

A centralized connector module, a refrigeration unit and a method of assembling a refrigeration unit. In one embodiment, the centralized connector module includes (1) a dielectric body having interconnected terminal sets corresponding to components connectable thereacross and (2) continuity indicator circuits associated with at least some of the terminal sets and configured to indicate continuity faults with respect to connected ones of the components.

Centralized connector module having component diagnostic capability, refrigeration unit incorporating the same and methods of assembling and troubleshooting a refrigeration unit

An expansion valve control system, a method of controlling an expansion valve and a refrigeration unit incorporating the same. In one embodiment, the expansion valve control system includes (1) a superheat error circuit configured to derive a superheat error for a fluid associated with the expansion valve and (2) a valve position circuit, associated with the superheat error circuit, configured to reposition the expansion valve proportionally based on both a current position thereof and the superheat error.

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Snellville, GA, United States of America

Patrick M Bailey