Maintenance And Cleaning - WIKA S-20 Betriebsanleitung

8. Maintenance and cleaning

8. Maintenance and cleaning
8.1 Maintenance
This pressure transmitter is maintenance-free.
Repairs must only be carried out by the manufacturer.
8.2 Cleaning
CAUTION!
Before cleaning, correctly disconnect the pressure transmitter from the pressure supply, switch it off and
■
disconnect it from the voltage supply.
Clean the instrument with a moist cloth.
■
Wash or clean the dismounted instrument before returning it, in order to protect persons and the environ-
■
ment from exposure to residual media.
Residual media in dismounted instruments can result in a risk to persons, the environment and
■
equipment. Take sufficient precautionary measures.
Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm of the process
■
connection.
For information on returning the instrument see chapter 10.2 "Return".
8.3 Recalibration
DKD/DAkkS certificate - Official certificates:
If the instrument is used for hydrogen applications, a recalibration is required after 6 months. The basic settings will be
corrected, if necessary.
WIKA operating instructions pressure transmitter, model S-20
GB
21