Beko Bekoblizz LC 12-355, Instructions For Installation And Operation Manual

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Technical description
26 BEKOBLIZZ® LC 12-355
11 Technical description
11.1 Control panel
The control panel explained below is the only chiller user interface.
LC 12 – 35 LC 55 – 115
1
2
3
P
Q
S
00
69
1
0
K
Set
sec - min
DMC15
ON
1
2
3
P
Q
S
00
65
1
0
K
Set
LC 150 – 355
2
3
P
Q
S
0
0
6
6
K
Set
I
ON
1
1 ON-OFF switch
2
Electronic instrument
3
Air and refrigerant flow diagram
11.2 Functional description
Operating principle – All chiller models described in this manual function according to the same principle. The hot and
moisture-loaded air flows through an evaporator, which is also known as an air/refrigerant heat exchanger. The air
temperature is reduced to approximately 5°C, so that water vapour condenses to liquid. The continuously accumulating
condensate is collected in the separator to be discharged via the condensate drain.
Refrigeration cycle – The refrigerant is conducted through the compressor and reaches a condenser under high
pressure. There, cooling-down takes place, making the refrigerant condense to a liquid state which is under high
pressure. The liquid is pressed through a capillary tube where the resulting pressure drop ensures that the refrigerant
evaporates at a defined temperature. The liquid refrigerant which is under low pressure is led into the heat exchanger,
where it expands. The cold resulting from the expansion serves to cool down the compressed air in the heat exchanger.
During this process, the refrigerant evaporates. The low-pressure gas is resupplied to the compressor, where it is
compressed again. It then re-enters the cycle. In phases of a reduced compressed-air load, the excess refrigerant is
resupplied automatically to the compressor via the hot gas bypass valve.