Trouble-Shooting - KSB Amacan P 500-270 Installation & Operating Manual

Table 27: Trouble-shooting
A B C D E Possible causes
- ✘ - - ✘ Water level lowered too much during operation Check supply and capacity of system (sump floor
✘ ✘ - - ✘ Total pressure corresponding to NPSH
high
Total pressure corresponding to NPSH
low
✘ ✘ ✘ - ✘ Penetration of air into the pump due to
formation of an air pocket
- Suction-side water level too low
✘ ✘ ✘ - ✘ Unfavourable flow to the pump inlet
- - ✘ Pump running in off-design conditions
✘ ✘
- part load/overload
✘ ✘ - ✘ ✘ Pump clogged by deposits
- ✘ ✘ ✘ ✘ Wear
- - ✘ ✘ Impermissible air or gas content in the fluid
✘
handled
- - - - ✘ System-induced vibrations
- - - ✘ Wrong direction of rotation
✘
✘ - - - - No voltage
✘ - - - - Motor winding or electric cable are defective.
- - ✘ - ✘ Worn or defective rolling element bearings
✘ - - - - The thermistor tripping unit with manual reset
for temperature limiter has tripped the pump as
a result of the permissible winding temperature
being exceeded.
- - - - Motor has been tripped
✘
by leakage monitor.
5 The pump pressure must be released before attempting to remedy faults on parts which are subjected to
pressure. Disconnect the pump set from the power supply!

8 Trouble-shooting

8 Trouble-shooting
WARNING
Improper work to remedy faults
Risk of injury!
▷ For any work performed to remedy faults, observe the relevant information
given in this operating manual and/or in the product literature provided by the
accessories manufacturer.
If problems occur that are not described in the following table, consultation with the
KSB service is required.
A Pump is running, but does not deliver
B Pump delivers insufficient flow rate
C Excessive current/power input
D Insufficient discharge head
E Vibrations and noise during pump operation
Amacan P
5)
Remedy
area).
Check level control equipment.
too Increase fluid level on the suction side.
pump
Clean screening equipment, if required.
too
system
Increase the suction-side water level. If this is
not possible or unsuccessful, please contact KSB.
Improve the flow to the intake chamber (contact
KSB).
Check the pump's operating data.
Clean intake and pump components.
Replace worn components by new ones.
Contact KSB.
Contact KSB.
Check the electrical connection of motor and
control system, if any.
Check electrical connections.
Contact the energy supplier.
Replace with original KSB cable or contact KSB.
Contact KSB.
Have cause determined and eliminated by
qualified and trained personnel.
Have cause determined and eliminated by
qualified and trained personnel.
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