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Switch 2-/4-wire
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the top left side of the connection board.
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Connection flow sensor
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External power supply
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the optional external power supply is on service.
In case of a failure of the external power sup-
ply the devices switches automatically to battery
supply. The battery lifetime can be checked in the
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the battery has to be replaced if needed.
Operation test
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pressing the button.
If the error appears permanently, it will be de-
tected at the next measuring cycle and displayed
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updated and the displayed temperatures corre-
spond to the present ones while the system is
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When attaching the top cover on the housing
pulses on the inputs can possibly be generated.
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essary.
Sealing
Seal the device with the included seals to pre-
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Maintenance
Repairs or overhaul are only allowed by the
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manufacturer.