Microsensor MPM489WZ3 Operation Manual page 14

6.2 Maintenance
MPM489WZ3 Submersible Level Transmitter does not need to be
maintained regularly, but please pay attention to items as follow for better
operating effect and reliability.
a) Check wire connection is reliable or not, and the cable is broken and
old or not.
b) Clean the protection cap and diaphragm cavity periodically(take
care!)
c) Don't violently pull cables or poke the diaphragm with metal or other
hard objects.
6.3 Fault Diagnosis
MPM489WZ3 Submersible Level Transmitter is integrative full-sealed
construction without movable parts inside, owning advantage of
long-term stability and reliability.
If some failure occur, such as no output, output too big or too small and
unreliable, please turn off the excitation firstly, then check the installation
and wire connection conform with the operation manual or not, the
excitation is correct or not and the reference tube is unobstructed or not.
If unsuccessful, the transmitter may be destroyed, please contact our
company.
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