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Operation and Maintenance
NEW EcoCooler
DSKE.191101.01.EN
Continuous product development may give rise to specification changes without notice.
Cooling circuit function
A cooling system has four basic components: evaporator, condenser, expansion
valve and compressor.
The compressor carries out the work required to run the cooling process.
The evaporator is located in the supply air for the unit. The heat from the outdoor
air is taken up in this coil, thereby cooling the supply air.
The energy supplied to the cooling system from the evaporator and the com-
pressor leaves the unit via the condenser. The condenser is located in the ex-
tract air (ECO) or the exhaust air (ECX). This means that the exhaust air becomes
hot when the cooling unit is running.
It is important to ensure that the air volumes are above the specified minimum
flow on both the outdoor air and extract air side. The process cannot work if
these air volumes are not available.
14
12
13
8
3
9
15
10
4
11
16
17
1
7
5
6
2
Flow chart for EcoCooler refrigerant system
1 Compressor
10 Measurement outlets – low pressure
2 Condenser
11 Liquid line sensor
3 Extract air fan
12 Control unit
4 Pressure switch – high pres-
sure
13 Temperature sensor suction gas
5 Measurement outlet – high
pressure
14 Pressure sensor – low pressure
6 Drying filter
15 Hot gas sensor
7 Expansion valve
16 Temperature sensor sump
8 Evaporator
17 Frequency inverter
9 Supply air fan
