KROHNE H54 M4 EN - Manual (Page 15)

15 H54 Installation and operating instructions
11 Maintenance
The flowmeter is also to be inspected for soiling, corrosive erosion and mechanical wear or damage to the
measuring tube and the display in the context of the routine operational maintenance of the installation and the
pipelines. We recommend at least annual inspections. In order to clean the instrument remove it from the
pipeline.
Note
Pressurized lines have to be relieved before the measuring unit is removed.
Corresponding safety precautions with regard to residual liquids in the measuring unit in case of instruments
which are used to measure aggressive media.
New seals must always be used when remounting the measuring unit in the pipeline.
Electrostatic charges are to be avoided when the surfaces (e.g. viewing window) are cleaned!
Information on returning instruments
Your instrument has been manufactured carefully
and tested several times. If installed and operated in
accordance with these instructions your instrument
will rarely present any problems. Should you
nevertheless need to return an instrument for
checking or repair, please pay strict attention to the
following points:
Due to statutory regulations concerning protection
of the environment and safeguarding the health and
safety of our personnel, KROHNE may only handle,
test and repair returned instruments that have been
in contact with liquids if it is possible to do so
without risk to personnel and environment.
This means that KROHNE can only service your
device if it is accompanied by a certificate in line
with the following model confirming that the device
is safe to handle.
If the instrument has been operated with toxic,
caustic, flammable or water-endangering liquids,
you are kindly requested:
- To check and ensure, if necessary by rinsing
or neutralizing, that all the cavities in
the instrument are free from such dangerous
substances. (Directions on how you can find out
whether the primary head has to
be opened and flushed out and neutralized
are obtainable from KROHNE on request.)
- To enclose a certificate with the device confirming
that the device is safe to handle and
stating the liquid used.
KROHNE regret that we cannot service your device
unless it is accompanied by such a certificate and
thank you for your understanding.