Festo CPV -VI Series, Manual

Page: 58 / 118

3.2.1 Auxiliary pilot air
CAUTION
Operate the CPV valve terminal only with the me-
dium described below.
– If possible, use non-lubricated auxiliary pilot air
(connections 12/14). Otherwise use hydraulic oil
of type DIN 51524-HLP32/ISO 6743-4. The oil
content in the auxiliary pilot air must not exceed
3-5 drops per 1000 l of air consumed. This
corresponds to 6 bar supply pressure and a
medium flow rate of approximately 1 drop/4 minutes.
Observe the instructions on special oil for service
units in the Festo Pneumatics Catalogue.
– In the case of CPV valve terminals with internally
branched auxiliary pilot air, the above mentioned
instruction also applies to the supply air
(connection 1/11).
The CPV valve terminal is intended for internal or exter-
nal pilot air, depending on the end plates. Refer to your
order documentation or to the table in chapter 5.3 "In-
ternal/external pilot air" to see which end plates are
fitted on your CPV valve terminal.
If the supply pressure of your CPV valve terminal is
between 3 and 8 bar, you can work with internal auxi-
liary pilot air. In this case the auxiliary pilot air is taken
from port 1 or 11 on the left or right-hand end plate. Internal
pilot air
PLEASE NOTE
If you are using a CPV valve terminal with internal
pilot air:
– port 12/14 must be sealed with a blind plug.
3. Installation
3-6
CPV... 9811d