Endress+Hauser Prosonic S FMU90 - Maintenance and repairs; 11.1 Exterior cleaning; 11.2 Repairs; 11.3 Repairs to Ex-approved devices

Maintenance and repairs
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11 Maintenance and repairs
11.1 Exterior cleaning
When cleaning the exterior, always use cleaning agents that do not attack the surface of the housing
and the seals.
11.2 Repairs
The Endress+Hauser repair concept assumes that the Prosonic S has a modular design and that
repairs can be done by the Endress+Hauser service or specially trained customers.
Spare parts are contained in suitable kits. They contain the related replacement instructions.
All the spare parts kits which you can order from Endress+Hauser for repairs are listed with their
order numbers in the section "Spare parts".
For more information on service and spare parts, contact the Service Department at Endress+Hau-
ser.
11.3 Repairs to Ex-approved devices
When carrying out repairs to Ex-approved devices, please note the following:
• Repairs to Ex-approved devices may only be carried out by trained personnel or by the
Endress+Hauser Service.
• Comply with the prevailing standards, national Ex-area regulations, safety instructions (XA) and
certificates.
• Only use original spare parts from Endress+Hauser.
• When ordering a spare part, please note the device designation on the nameplate. Only replace
parts with identical parts.
• Carry out repairs according to the instructions. On completion of repairs, carry our the specified
routine test on the device.
• Only Endress+Hauser Service may convert a certified device into a different certified variant.
• Document all repair work and conversions.
11.4 Replacement
After a complete instrument or electronic module has been replaced, the parameters can be
downloaded into the instrument again via the communication interface. Prerequisite to this is that
the data were uploaded to the PC beforehand using ToF Tool /FieldCare. Measurement can
continue without having to carry out a new setup. Only a linearisation and a tank map (interference
echo suppression) have to be recorded again.
11.5 Replacing a sensor
Sensors can be replaced if required.
After replacing a sensor, the following parameters of the "basic setup" submenu must be checked:
• for sensors FDU8x: sensor type
(sensors of the type FDU9x are automatically detected by the Prosonic S)
• the empty calibration
• for level measurements: the full calibration
• the interference echo suppression
After that, the measurement can be continued without further restrictions.