BADU Normblock Multi Originalbetriebsanleitung Seite 91

Fault: Increased bearing temperature
Possible cause
Pump strained or
vibrations in the pipes.
Increased axial thrust –
(further enquiry
required).
Flow rate too low.
Fault: Unauthorised increase in pump temperature
Possible cause
Pump and pipes not
completely ventilated or
filled.
Suction height too
large/Unit's NPSH
(intake) too low.
Flow rate too low.
04/2019
Solution
 Check pipe connections and
pump fasteners, if necessary
reduce the pipe bracket
spacing.
 Fasten pipes using vibration
reducing materials.
 Clean relief bore in impeller.
 Increase minimum flow rate.
Solution
 Ventilate pump.
 Fill pump.
 Correct the fluid level.
 Install pump lower.
 Completely open shut-off valve
in the intake.
 If the resistance is too large,
modify the intake line.
 Check suction basket/suction
opening.
 Observe the permitted pressure
reduction speed.
 Increase minimum flow rate.
Faults
EN 31