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CRE 302


Teaching suggested applications*

-          Identification of the components of a three compressor refrigeration system with negative cold room, positive chilled display case and ambient evaporator

-          Commissioning and verification of operation

-          Study of the basic concept of a refrigeration installation, triple evaporation with electronic expansion valves.

-          Study of the thermodynamic cycle on enthalpy diagram.

-          Calculation of cooling capacities at the condenser and evaporators, overall efficiency of the unit.

-          Preventive and curative maintenance

-          Role and adjustment of constant pressure valves, study of the oil circuit

-          Plant regulation with 1 variable speed compressor

-          Centralized technical management of supervision with display of values ​​and alarms


The CRE302 bench allows the study of a three-stage compression plant. It is composed of a plant equipped with three semi-hermetic industrial compressors and three evaporation systems (negative cold room, refrigerated display case and evaporation in the atmosphere). The system includes all the standard components fitted to industrial plants (oil separator, dehydrator, constant pressure valve regulator, etc.). in addition to this, the bench is instrumented in order to expand its educational use.


Students will first need to understand the system and identify the components of the installation. They will then be able to commission and make the necessary adjustments (pressure switches, regulators, constant pressure valve, pressure reducing valve, etc.).


When the system is in operation, they can then check the parameters (pressure, temperature, flow, etc.). they will calculate the yield and draw the enthalpy diagram corresponding to each evaporation system.


Finally, they will be able to perform maintenance operations such as changing a filter, the procedure for changing a compressor on a power plant, changing an evaporator, installing a manifold.


The robust design of this equipment makes it perfectly suited for use in schools.

Its anodized aluminum structure on feet gives it great robustness as well as great flexibility of integration into your premises. The manufacturing of this equipment meets the European machine directive

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*Teaching suggested applications


ZA du Parc
42490 Fraisses

Phone number/Fax

+33 (0)4 77 10 10 10
+33 (0)4 77 61 56 49


Please, give us your technical and teaching requirements and we will manufacture for you your new system.


Because we have the experience, and choose the best suppliers we will assure features and relevance.

The essential of DIDATEC :

Standard range distribution - Research department / Customization

 Units of : Demonstration, Teaching and lab manuals, Research and development.

Technical and lab manuals - Advice and layout plan studies 

Warehouse and trials : 1600 m², Research department : 150 m², Spare parts : 300 m².

Because all systems are being manufactured at our plant, accordind to your specific needs and budgets we will assure quality and long-lived. 

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