Page 18 / 100 Technical Notice V1.0 / 01.09
2 Generalities
2.3.1.2 Legend
(1) Pump
(2) Temperature probe
(3) Thermostat
(4) Compressor
(5) Safety pressure controller (an option on the CSW100)
(6) Exhaust fan
(7) Condenser
(8) Temperate water inlet
(9) Cold water outlet
(10) Reservoir
(11) Evaporator
(12) Pressure regulator
(13) Dehumidifier
(14) Cooling circuit
2.3.2 Principles of operation
The whole range of water chillers supply chilled water (9) continuously at a constant temperature.
The chilling is accomplished in the following manner: An HFC refrigerant of either R134A (tetrafluo-
roethane) or R407C types is compressed (4) then chilled in a condenser (7).
A pressure regulator (12) causes a drop in pressure which leads to a drop in temperature. The drop in
temperature is transmitted to the water contained in the reservoir (19) through a heat exchanger (11).
The cold water leaves the reservoir (9) to chill the end use equipment and then returns back to the re-
servoir (8).
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