Cleaning Of The Screens; Positioners With Makrolon Enclosure 6Dr5..0, Aluminum Enclosure 6Dr5..3 - Siemens 6DR50 Series Operating Instructions Manual

Service and maintenance

11.2 Cleaning of the screens

Dust layers above 5 mm
Danger of explosion in hazardous areas. Device may overheat due to dust build up.
• Remove 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.
11.2 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.
11.2.1

Positioners with Makrolon enclosure 6DR5..0, aluminum enclosure 6DR5..3,

and flameproof aluminum enclosure 6DR5..5
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.
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WARNING
DANGER
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12