Siemens SIRIUS ACT 3SU1 System Manual page 399

Cleaning and disinfection
Information on the material of the protective cap
Silicones are generally highly resistant to many media. If concentrated acids and lyes are
used (particularly at high temperatures) a direct attack on the material is to be expected. In
the case of hydrocarbons (greases, oils) under test conditions (immersed over long periods
at temperature) a reversible swelling of the silicone occurs. In the case of short-term surface
contact, however, this will hardly be noticeable.
Cleaning and disinfection
Silicone ages and only has a certain life expectancy. Check and clean the protective caps at
regular intervals.
A thorough cleaning should take place:
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Cleaning tools must be checked in advance to ensure they are clean and hygienic to use.
Use only those cleaning tools that do not shed any material onto the surfaces to be cleaned.
Use the cleaning tools carefully. For example, do not use excessive pressure which could
impair (shift) the proper seating of the cap. Clean carefully, but gently. The final rinse must
be with drinking water.
No sharp, hard, or pointed objects which could damage the surface should be used for
cleaning/disinfection.
Note
Acids, lyes and cleaning agents containing hydrocarbons are not suitable for cleaning and
disinfecting the protective cap.
The use of high-pressure washers is not permitted for the cleaning.
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010
Prior to initial commissioning.
At regular intervals (the cleaning intervals are to be determined by the user).
On special demand (depending on level of contamination).
3SU19 accessories
13.3 Protection
399