HygroMatik CU-1, Руководство пользователя

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Page 16
4.4.1 Operation with hygrostat
If the actual humidity level lies below the hygrostat's set point,
an electrical signal (2) is sent to the control unit. When humidifi-
cation is needed, the control unit applies pressure through the
control air line (3), opening the pilot valve and the water supply
to the vacuum valve. Atomisation air from the pilot valve flows
through the nozzles. Following the injector principle, a low pres-
sure differential is created in the tip of the nozzle. This differen-
tial opens the water outlet inside the vacuum valve. Suction
draws the water into the nozzles where it is atomised.
Once the set point is reached, the hygrostat sends an electrical
signal to the control unit (2). The unit switches off the pressure
in the control air line (3), causing the pilot and vacuum valves to
interrupt the supply of atomisation air and water. The cleaning
needles simultaneously close off the tips of the nozzles. The
system remains in this position until the hygrostat signals the
control unit for more humidification.
4.4.2 VN Nozzle Self-Cleaning
Self-cleaning takes place in regular cycles. The control unit
briefly switches off the pressure to the control air line (3). The
pilot and vacuum valves shut off the air and water supply to the
nozzles.The springs in the nozzles relax and push back the pis-
tons holding the cleaning needles. Shortly afterward, the control
unit again pressurizes the air control line, causing the pilot and
vacuum valves to reopen the air and water supply. The atomisa-
tion air presses the pistons holding the cleaning needles forward
against the springs. The nozzle tips are cleaned and atomisation
is resumed.
Loc. Designation
1 power supply connection
2 hygrostat connection
3 control air connection
4 compressed air supply connection
5 venting
6 LED for power, stand by and humidify
7 ON/OFF switch
8 manometer for system pressure
9 pressure controller to adjust system pressure