Siemens 6DR5 Serie Mode D'emploi page 34

WARNING
Dust layers above 5 mm
Danger of explosion in hazardous areas. Device may overheat du to dust build up.
● Remove any dust layers in excess of 5 mm.
Cleaning the enclosure
● Clean the outside of the enclosure and the display window using a cloth moistened with water or a mild detergent.
● Do not use aggressive cleaning agents or solvents. Plastic components or painted surfaces could be damaged.
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 Positioner in macrolon enclosure
DANGER
Risk of explosion due to electrostatic charge
Electrostatic charges develop when cleaning the positioner in the macrolon 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 self-tapping 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 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 macrolon enclosure.
2. Place the O-rings on the screens.
3. Fit the pneumatic terminal strip on both studs so that it fits flushly.
4. Screw-on the three self-tapping screws.
5. Place the cover and tighten it.
6. Reconnect the pipelines and feed the pneumatic power supply.
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SIPART PS2 (6DR5...)
A5E03436620-04, 02/2014