Siemens 6DR50.1-0N Notice De Service page 34

6.1.1 Cleaning the enclosure
Cleaning the enclosure
● Clean the outside of the enclosure with the inscriptions and the display window using a cloth moistened with water or a
mild detergent.
● Do not use any aggressive cleansing agents or solvents, e.g. acetone. Plastic parts or the painted surface could be
damaged. The inscriptions could become unreadable.
6.2 Cleaning of the screens
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.
6.2.1 Positioners with Makrolon enclosure 6DR5..0, aluminum enclosure 6DR5..3, and
flameproof aluminum enclosure 6DR5..5
DANGER
Risk of explosion due to electrostatic charge
Electrostatic charges develop when cleaning the positioner in the Makrolon enclosure with a dry cloth, for example.
It is imperative you avoid electrostatic charges in the hazardous environment.
Removal and cleaning of the screens
1. Disconnect the pneumatic auxiliary power supply.
2. Remove the lines.
3. Unscrew the cover.
4. Unscrew the three screws on the pneumatic terminal strip.
5. Remove the screens and O-rings behind the terminal strip.
6. Clean the screens, e.g. using compressed air.
Installation of the screens
CAUTION
Damage to the Makrolon enclosure
The enclosure is damaged due to screwing in the self-tapping screws improperly.
•
Ensure that the available thread pitches are used.
•
Turn the screws anticlockwise until they engage noticeably in the thread pitch.
•
Tighten the self-tapping screws only after they have engaged.
•
1. Insert the screens into the recesses of the enclosure.
2. Place the O-rings on the screens.
3. Insert the pneumatic terminal strip.
4. Tighten the three screws. Note: With the Makrolon enclosure, the screws are self-tapping.
5. Place the cover and tighten it.
6. Reconnect the pipelines and feed the pneumatic power supply.
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SIPART PS2 (6DR5...)
A5E03436620-06, 04/2015