Information On The Use Of Positioners In Wet Environments - Siemens SIPART PS2 6DR50x0 serie Betriebsanleitung

Operating instructions
In addition you must always ensure that no water can penetrate through an open housing or screw joint. This can
occur when the SIPART PS2 cannot not be assembled and connected immediately on site.
In general the SIPART PS2 may only be operated with dry compressed air. Therefore use the usual water
separator. In extreme cases, an additional drying unit may even be required. This is particularly important when
the SIPART PS2 is operated at low ambient temperatures. In addition, please ensure that the purging air
changeover switch (on the valve manifold, above the pneumatic terminal block) is in the position OUT.
For rotary actuators that are exposed to strong acceleration forces or vibrations, please use a sufficiently stable
console (e.g. sheet thickness > 4mm with backing) and the extension kit "linear actuator" or the integrated
mounting for linear actuators.
3.1.1

Information on the use of positioners in wet environments

This information is important for the assembly and operation of the SIPART PS2 positioner in wet environments
(frequent and heavy rain and/or long--term tropical condensation) for which the protection type IP 65 is no longer
sufficient and, in particular, when there is a danger that the water can freeze.
To prevent water from entering into the device during normal operation (e.g. through the exhaust vents) or to pre-
vent difficulties reading the display, please avoid the following unfavorable assembly positions.
Favorable and unfavorable assembly positions
Fig. 1
If circumstances force you to operate the SIPART PS2 in an unfavorable assembly position, it is possible to
prevent the penetration of water by means of additional measures.
CAUTION
!
Never clean the SIPART PS2 with high--pressure water cleaning apparatus because the protection
type IP65 does not have sufficient protection for this.
The necessary additional measures against the penetration of water are dependent on the chosen assembly
position and the following items may be required in addition:
Screw joint with sealing ring (e.g. FESTO: CK -1 / 4-PK-6)
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Plastic tubing approx. 20 to 30 cm (e.g. FESTO: PUN- 8X1.25 SW)
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Cable ties (number and length dependent on the local conditions)
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Procedure
Arrange the piping in such a way that rain water or condensed water running down the pipes can drip off
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before reaching the terminal block of the SIPART PS2.
Check the seals of the electrical connections for perfect seating.
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Check the seal in the housing cover for damage and soiling. If necessary, clean or replace.
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Mount the SIPART PS2 when possible so that the sintered bronze silencer on the underside of the housing
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faces downwards (vertical assembly position). If this is not possible, the silencer should be replaced by a
suitable screw joint with plastic tubing.
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SIPART PS2
A5E00074600-05