Maintenance And Cleaning - WIKA 990.27 Mode D'emploi

7. Maintenance and cleaning

7. Maintenance and cleaning
7.1 Maintenance
The diaphragm seal measuring system is maintenance-free.
Checks should be carried out on a regular basis to ensure the measurement accuracy of
EN
the pressure gauge. The checks or recalibrations must be carried out by qualified skilled
personnel with the appropriate equipment.
WARNING!
Repairs must only be carried out by the manufacturer or appropriately qualified
skilled personnel.
7.2 Cleaning
With contaminated, viscous or crystallising media, it may be necessary to clean the
diaphragm from time to time. Only ever remove deposits from the diaphragm with a soft
brush and suitable solvent.
CAUTION!
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Before cleaning, correctly disconnect the instrument from the pressure supply,
switch it off and disconnect it from the mains, if needed.
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Do not use sharp objects or aggressive detergents to clean in order to avoid
damage to the sensitive and extremely thin diaphragm.
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Clean the instrument with a moist cloth.
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Electrical connections, if available, must not come into contact with moisture.
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Wash or clean the dismounted instrument before returning it, in order to protect
personnel and the environment from exposure to residual media. Residual
media in dismounted instruments can result in a risk to persons, the environment
and equipment. Sufficient precautionary measures must be taken.
16 WIKA operating instructions, diaphragm seal measuring systems