Auxiliary Pilot Air - Festo CPV-VI Series Manual

3. Installation

3.3.1 Auxiliary pilot air

3-6
Caution
Operate the CPV valve terminal only with the media de-
scribed below.
– If possible, use non-lubricated auxiliary pilot air (connec-
tions 12/14). Otherwise use hydraulic oil
DIN 51524-HLP32/ISO 6743-4. The oil content in the
auxiliary pilot air must not exceed 3 drops per 1000 l of
air used. This corresponds to 6 bar supply pressure and
a medium flow of approx. 1 drop every 4 minutes.
Please note also the remarks on special oil for service
units in the Festo Pneumatics Catalogue.
– With CPV valve terminals with internally branched auxili-
ary pilot air, the above mentioned remark also applies to
the supply air (connection 1/11).
CPV valve terminals with two pressure zones and exter-
nally branched auxiliary pilot air in the right-hand end
plate:
– Due to the internally branched auxiliary pilot air, the
pressure in the right-hand pressure zone must be
3 - 8 bar.
The CPV valve terminal is intended for internal or external
pilot air, depending on the end plates fitted. Please refer to
your order forms or to the table in Appendix B.2 to ascertain
which types of end plates are fitted on your CPV valve ter-
minal.
Internal pilot air
If the supply pressure of your CPV valve terminal lies between
3 and 8 bar, you can operate it with internally branched auxili-
ary pilot air. In this case the auxiliary pilot air will be taken
from connection 1 or 11 in the left or right-hand end plate.
Festo P.BE-CPV-EN en 0005e