Care and Maintenance
99
SIP ART PS2 Manual
A5E00074631-01
Service and Maintenance
The positioner is largely maintenance--free. The positioners are fitted
with filters in the pneumatic connections as protection against coarse
particles of dirt. If the pneumatic energy supply contains particles of
dirt, the filters may clog and impair the function of the positioner. In this
case the filters can be cleaned as follows.
Positioner in metal housing and explosion proof version
1. Switch off the pneumatic power supply and remove the pipes.
2. Remove the metal filters carefully from the holes and clean (e.g.
with compressed air).
3. Insert the filters.
4. Re--connect the pipes and supply pneumatic energy.
Positioner in plastic housing
Removal
1. Switch off the pneumatic power supply and remove the pipes.
2. Unscrew the cover
3. Remove the three screws from the pneumatic connector strip.
4. Remove the filters and O-rings behind the connector strip.
5. Clean the filters (e.g. with compressed air).
Installation
6. First insert the filters in the recesses in the plastic housing and then
place the O-rings on the filters.
7. Align the pneumatic connector strip on the two lugs and screw tight
with the three self--tapping screws.
Important:
Make sure that the same thread is used. To do this turn the screws
counterclockwise until they snap into the thread audibly. Only then
should you tighten the screws.
5
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