Commissioning, Operation - WIKA PSA-31 Mode D'emploi

5. Transport, packaging and storage / 6. Commissioning, ...
5.3 Storage
Permissible conditions at the place of storage:
Storage temperature: -20 ... +80 °C
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EN
Humidity: 45 ... 75 % relative humidity (no condensation)
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In order to protect the diaphragm, mount the protection cap before storing the instrument.
WARNING!
Before storing the instrument (following operation), remove any residual media. This is of
particular importance if the medium is hazardous to health, e.g. caustic, toxic, carcinogenic,
radioactive, etc.

6. Commissioning, operation

CAUTION!
Only use the pressure switch if it is in perfect condition with respect to safety.
Check the following points before commissioning:
Check the diaphragm for any visible damage, since this is a safety-relevant component.
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Leaking fluid is indicative of damage.
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6.1 Making the mechanical connection
Remove the protection cap not until shortly before mounting. During installation, ensure that the
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diaphragm is not damaged.
The sealing faces at the instrument always have to be clean.
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Only ever screw in, or unscrew, the instrument via the spanner flats. Never use the case as a working
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surface.
The correct torque depends on the dimensions of the pressure connection and the gasket used
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(form/material).
When screwing in, do not cross the threads.
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Never loosen sealed filling screws on the measuring instrument.
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For installation, in accordance with the fitting and flange standards the appropriate fastenings, such
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as screws, nuts or clamp rings, must be used.
16 WIKA operating instructions pressure switch model PSA-31 for sanitary applications