Flowserve PMV D3 Digital Positioner - Manual (Page 4)

4
2. Storage
General
The PMV positioner is a precision in-
strument. Therefore it is essential that it is
handled and stored in the right way. Always
follow the instructions below!
N.B. As soon as the positioner is
connected and started, internal air leakage
will provide protection against corrosion
and prevent the ingress of moisture. For this
reason, the air supply pressure should
always be kept on.
Storage indoors
Store the positioner in its original
packaging. The storage environment must
be clean, dry, and cool (15 to 26
°C, 59 to
79 °F..
Storage outdoors or for a longer
period
If the positioner must be stored
outdoors, it is important that all the cover
screws are tightened and that all connections
are properly sealed. The unit should be
packed with a desiccant (silica gel) in a
plastic bag or similar, covered with plastic,
and not exposed to sunlight, rain, or snow.
This is also applicable for long-term
storage (more than 1 month) and for long
transport by sea.
Storage in a warm place
When the positioner is stored in a warm
place with a high relative humidity and is
subjected to daily temperature variations, the
air inside the unit will expand and contract.
This means that air from outside the unit
may be drawn into the positioner. Depending
on the temperature variations, relative
humidity, and other factors, condensation and
corrosion can occur inside the unit, which in
turn can give rise to functional disorders or
a failure.