BADU Normblock Multi 100/250, Перевод оригинального руководства по эксплуатации

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Faults
30 EN 04/2019
Fault : Too low a flow rate in the pump
Possible cause Solution
Pump is handling against
too high a discharge
head.
 Set operating point again.

Check unit for impurities.
Pump and pipes not
completely ventilated or
filled.
 Ventilate pump.
 Fill pump.
Pump/pump parts
blocked due to
impurities.  Clean.
Building up of air sacks
in the piping.  Modify piping or insert a
ventilation valve.
Suction height too
large/Unit’s NPSH
(intake) too low.  Correct the fluid level.
 Install pump lower.
 Completely open shut-off valve
in the intake line.
 If the resistance is too large,
modify the intake line.
 Check suction basket/suction
opening.
 Observe the permitted pressure
reduction speed.
Drawing in air in the
mechanical seal.

Replace mechanical seal.
Incorrect direction of
rotation (3~).  Check the electrical connection
to the motor and switching
device.
Too low a speed.  Increase the voltage/frequency
on the frequency converter
within the permitted range.
Wear of components.

Replace components.
Running on two phases.  Renew faulty fuse.
 Check the electrical connections
using the operating manual.