Flowserve PMV D3 Digital Positioner - Manual (Page 8)

8
6. Installation
Tubing
Use tubes with an inner diameter of mi-
nimum 6 mm (1/4”).
Air supply requirements
Max. air supply pressure, see the section
Technical Data, Section 10.
The air supply must be free from
moisture, water, oil, and particles.
The air must come from a refrigeration
dried supply or be treated in such a way that
its dew point is at least 10
°C (18°F) below
the lowest expected ambient temperature.
To ensure a stable and problem-free air
supply, we recommend the installation of a
filter/pressure regulator <40
µ as close to the
positioner as possible.
Before the air supply is connected to the
positioner, we recommend the hose is opened
freely for 2 to 3 minutes to allow any con-
tamination to be blown out. Direct the air jet
into a large paper bag to trap any water, oil,
or other foreign materials. If this indicates
that the air system is contaminated, it should
be properly cleaned.
WARNING! Do not direct the
open air jet towards people or
objects because it may cause
personal injury or damage.
Poor air supplies are the main source
of problems in pneumatic systems.