Wika PSA-31 Manual de usuario descargar pdf (Pagina 28)

28 WIKA operating instructions pressure switch model PSA-31

14018458.01 11/2011 GB/D/F/E

7. Maintenance and cleaning

7.1 Maintenance

This instrument is maintenance-free.

Repairs must only be carried out by the manufacturer.

7.2 Cleaning

CAUTION!

■

Before cleaning, correctly disconnect the instrument from the pressure supply, switch it

o and disconnect it from the voltage supply.

■

Clean the instrument with a moist cloth.

■

Electrical connections must not come into contact with moisture.

■

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.

■

Take sucient precautionary measures.

■

Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm

of the process connection.

■

Only ever remove deposits from the diaphragm with a soft brush and suitable solvent.

■

Do not use any cleaner that scours the material.

For information on returning the instrument see chapter 9.2 "Return".

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Wika PSA-31 Manual de usuario Pagina 28