2 - Operation and maintenance
13
TO320 M - EN - Ed. 04.09
Pneumatic connections (VDC with pneumatic drive)10.2
Compressed air requisites10.2.1
The compressed air which must enable the various utilities must have certain features:
• Clean: free of impurities
• Dehumidied: it is, however, advisable to provide for a condensate separator;
• Oil-free: the presence of oily substances in the air could cause premature and irreversibile clog-
ging.
Use of lters that keep the air clean and oil-free is recommended.
The only application where compressed air is present is the pneumatic version.
The end user is responsible for supplying the pneumatic control units
5
6 8
7
319
24
No. Description
1 Lower cylinder discharge
2 Upper cylinder discharge
3 Lower cylinder delivery
4 Upper cylinder delivery
5 Pressure switch
6 Upper cylinder coil
7 Lower cylinder coil
8 Air supply
9 Air discharge
The pneumatic control unit will be supplied by a Ø8 mm
tube (inlet 8) at a recommended pressure of 5 bar.