Repair and error handling Micropilot FMR62
26 Endress+Hauser
L
CAUTION
Once test sequence D has been performed, the SIL mode must be activated again!
‣
Activate SIL mode (as per "Device configuration for safety-related applications")
‣
The following steps do not need to be performed again in this case: Steps 1 and 2 were
performed in the context of (initial) commissioning/configuration. Steps 3, 6 and 7
were performed in the context of this proof test with the relevant diagnostic coverage.
6.5 Verification criterion
If one of the test criteria from the test sequences described above is not fulfilled, the
device may no longer be used as part of a safety instrumented system.
• The purpose of proof-testing is to detect dangerous undetected device failures (λ
DU
).
• This test does not cover the impact of systematic faults on the safety function, which
must be assessed separately.
• Systematic faults can be caused, for example, by process material properties, operating
conditions, build-up or corrosion.
• As part of the visual inspection, for example, ensure that all of the seals and cable
entries provide adequate sealing and that the device is not visibly damaged.
7 Repair and error handling
7.1 Maintenance
Maintenance instructions and instructions regarding recalibration may be found in the
Operating Instructions pertaining to the device.
Alternative monitoring measures must be taken to ensure process safety during
configuration, proof-testing and maintenance work on the device.
7.2 Repair
Repair means restoring functional integrity by replacing defective components.
Only original Endress+Hauser spare parts may be used for this purpose.
Document the repair with the following information:
• Serial number of the device
• Date of the repair
• Type of repair
• Person who performed the repair
Components may be repaired/replaced by the customer's specialist staff if original
Endress+Hauser spare parts (which can be ordered by the end customer) are used, and if
the relevant installation instructions are followed.
A proof test must always be performed after every repair.
• Antennas
• Visual inspection to check whether all parts are present and properly mounted
• Interference echo mapping must be recorded again
• Proof test, test sequence A or B
• Seal between antenna and housing
• Visual inspection to check whether all parts are present and properly mounted
• Proof test, test sequence A or B
• Display SD02/SD03
Visual inspection to check whether all parts are present and properly mounted
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