SKF UC - 9.1 Commissioning malfunctions

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EN
Malfunction Cause Remedy
Pump does not deliver medium Motor stopped
Motor rotating in wrong direction
Coupling defective
Air drawn in (cavitation)
Oil too viscous
Check valve installed incorrectly
– Check electrical connections and reverse if necessary
– Check electrical connections and reverse if necessary
– Replace coupling
– Check fill level or oil feed
– Check proper sealing of suction line
– Fill with oil of permissible operating viscosity
– Rectify installation
Pump delivers too little medium Motor speed too low
Air drawn in
Leakage
– Check electrical connections and reverse if necessary
– See above
– Remedy leaks
– Check setting of pressure regulating valve
– Check screw connection and suction line
Pump noises too loud Intake pipe Ø too small – Increase intake pipe Ø or shorten suction line
– Fill with oil of permissible operating viscosity
9.1 Commissioning malfunctions
9. Malfunction
Warning!
In cases of functional failure, always make sure that all technical specifications have been
complied with in the existing operating conditions.