HygroMatik CU-1, Руководство пользователя

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Page 20
4.5 Pilot Valve Type PV
As soon as the control unit activates the pilot valve using the
control air line (2), the pilot valve brings the atomisation air pres-
sure for the nozzles to the control air pressure set by the control
unit.
The pilot valve is closed when control air pressure is absent (2).
4.5.1 Pilot Valve Mode of Operation
Pressure from the control air (2) pushes on the diaphragm and
valve plate (4), depressing the valve cone (5) in the pilot valve.
Compressed air (1) flows through the valve into the vacuum
nozzles (3). In the absence of control air pressure, the valve
cone (5) is closed by the spring (6), blocking the supply of atomi-
sation air (3) to the nozzles.
Pilot Valve PV
Location Designation
1 compressed air supply
2 control air from the control unit
3 atomisation air to the nozzles
4 diaphragm and valve plate
5 valve cone
6 spring