Teaching suggested applications*

-          Identification of the components of an installation operating with  R290

-          Commissioning and settings of a refrigerating installation

-          Standard operation procedure to recover and load the refrigerant (requires additional tools)

-          Setting of the control components (pressure control valve)

-          Maintenance operations on a refrigeration installation

-          Draw of the refrigeration cycle on enthalpy diagram to check the operation of the installation

Description

The bench HFF 290 is designed to train the learners in the handling of refrigerants R290. The installation is based on a refrigerating cycle operating with R290. It comprises the main components of a positive installation, a compressor, a condenser, a receiver, a solenoid control valve, an expansion valve, an evaporator and a suction line accumulator. Service valves and fittings Schrader type allow the learners to connect a manifold for the load operations, recovery operation and verification operation.

The cold chamber is simulated by a cabinet. The cabinet door is equipped with an enthalpy diagram R290 with erasable surface (format A3). A thermostatic control box will control the operation of the solenoid valve (pump down control). Two switches located on the box are used to stop the operation of the solenoid valve and of the condenser (this facilitates adjustment of the pressure switches).

The robust design of this equipment makes it perfectly suited for use in schools. Its anodized aluminium structure on wheels makes it extremely robust as well as a great flexibility of integration into your premises. In the lower part, the bench comprises a storage area equipped with two doors with key locking (storage of tooling).

1.   Hermetic compressor power 567W (0°C evaporation / condensation 40°C)

2.   Safety valve

3.   Forced ventilation air condenser with fan speed controller

4.   receiver made of steel

5.   Service valves

6.   Safety pressure switch HLP

7.   LP control pressure switch

8.   Ball valve with connector Schrader

9.   Filter + dryer 1/4"

10. sight glass

11. solenoid control valve

1.      expansion valve with internal equalization

2.      Evaporator with forced convection power 495W

 at dt 7K

3.      Pressure regulating valve of evaporation KVP type

4.      Suction line accumulator volume 1.5L

The bench also includes:

-a power supply module with a differential circuit breaker and a 2P+ T socket for connecting the accessories (pump, recovering station ...)

-a digital thermostatic control box with probe in the chamber. The controller controls the solenoid valve (control pump down). Two switches are used to stop the operation of the condenser and the solenoid valve (adjusting pressure switches).

-a cold chamber simulated by a cabinet. The cabinet door is equipped with an enthalpy diagram R290 with erasable surface (format A3).

-a storage area in the lower part of the frame with two access doors. A key lock is used to secure the storage.

• Power supply: 230 Vac – 50 Hz – 10 A
• Power supply type: 1 phase(s) + Neutre + Terre
• Dimensions : (LxlxH mm): 1160 x 640 x 1790
• Weight (Kg) : 150