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National College Credit Recommendation Service

Board of Regents  |  University of the State of New York

Apex Technical School | Evaluated Learning Experience

Commercial Refrigeration

150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
24-02 Queens Plaza South, Long Island City, NY.
March 1994 - Present.
Instructional delivery format: 
Traditional classroom model
Learner Outcomes: 

Upon successful completion of the course, students should be able to: install and remove gauges; analyze system capacity and performance using a pressure enthalpy diagram; perform system pump down procedures; wire electrical circuits; explain the operation of commercial systems that use two evaporators, thermostatic expansion valves, air and water cooled condensers, and the use of pressure controls to regulate temperature; describe the operation of both single and three phase motors; evaluate current and potential relays; perform electrical and mechanical inspections; perform common maintenance and troubleshooting procedures using appropriate safety procedures.


Major topics include: the refrigeration cycle; system capacity formulas; electrical circuits; gauge procedures; pump down procedures; evaporators; thermostatic expansion valves; condensers; compressors; recovery, evacuation, and recharging; current and potential relays; motors; three phase power; safety procedures; EPA objectives. Shop exercises are performed on a custom-designed commercial refrigeration trainer.

Credit recommendation: 

In the lower division baccalaureate/associate degree category, 4 semester hours (2 lecture, 2 shop) in HVAC and Refrigeration Technology or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation) (12/13 revalidation) (12/18 revalidation) (12/23 revalidation).