ITM Italia EURODRY EFT Serie Manual De Instrucciones página 19

2.3.1 Operation cycle
The operation of dehumidifiers by condensation is based on a typical cooling cycle performed by a gas in a
particular type of circuit. In fact dehumidifiers that use condensation belong to a macro category of refrigeration
machines.
Fig. 2
Functional Diagram of Dehumidifier
condensation process of the coolant gas and the energy dissipated by the compressor (1) and, to a lesser degree,
by the fan (4). Then the air is discharged from the dehumidifier at a temperature higher than the temperature at
which it entered. The temperature rises by about 5°C. The moisture of the air being recirculated continuously in the
unit drops and is dehumidified rapidly and gradually. In the next paragraphs we will see in detail the role of all the
components shown in Figure 2 while the outward appearance of the machine with the position of the major parts is
shown in Fig. 3.
1 Control panel
2 Humidistat
3 Condensate drain tube
4 Direct drain tube
Fig. 3 Views
14 Solenoid pump
13 Water filter
12 Tray full microswitch
11 Tray present
microswitch
10 Water collection tray
9 Humidistat
8 Evaporator
7 Temperature
transducer
6 Capillary
5 Dehydrator filter
3 Condenser
2 Electric by-pass valve
1 Compressor
5 Pump tube holder
6 Handle
7 Air Filter
8 Electrical cable
GB 6
Fig. 2 illustrates
operation of a cooling circuit
typical of dehumidifiers. The
moist air is suctioned by the
fan (4) and it is sent through
the dust-removal filter to the
gas evaporator (8). It brings
the air temperature to under
dew point which causes the
condensation of the water
contained in the air. The
water drops that form on the
evaporator are collected in a
container or drained directly
out of the unit. The cold air
is then made to pass
through the condenser (3)
where it is heated by the
heat created by
the
the