Purge Air Switching - Siemens SIPART PS2 Operating Instructions Manual

Commissioning

7.4 Purge air switching

7.4 Purge air switching
When the enclosure is open, the purge air switch above the pneumatic terminal strip on the
pneumatic block can be accessed.
● In the IN position, the enclosure is flushed from inside with a small volume of clean and dry
instrument air.
● In the OUT position, the purge air is directly directed towards outside.
Figure 7-1
The factory setting is the "IN" position.
114
①
Purging air selector
②
Pneumatic connections Y1, PZ and Y2
Purge air switch on the pneumatic block; view of the positioner on the pneumatic
connection side when the cover is open
SIPART PS2 with and without HART
Operating Instructions, 05/2017, A5E00074631-AC