Siemens SIPART PS2 6DR50xx Betriebsanleitung Seite 199

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SIPART PS2 with and without HART communications
Operating Instructions, 09/2007, A5E00074631-07
199
Service and maintenance
12
The positioner is maintenance-free to a large extent. Screens are installed in the pneumatic
connections of the positioners to protect them from rough dirt particles. If there are dirt
particles in the pneumatic auxiliary power supply, they damage the screens and hamper the
function of the positioner. Clean the screens as described in the following two chapters.
12.1 Positioner in the metal enclosure and in the flameproof enclosure
Dismantling and installation
1. Disconnect the pneumatic auxiliary power supply.
2. Remove the pipelines.
3. Remove the metal screen from the bores carefully.
4. Clean the metal screens, e.g. using compressed air.
5. Insert the screens.
6. Connect the pipelines again.
7. Feed the pneumatic auxiliary power supply.
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