KSB Delta Basic MVP User Manual

9 Trouble-shooting
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KSB Delta Basic
1983.835/01-EN
9 Trouble-shooting
NOTE
Before performing any work on the pump's internal parts during the warranty
period please always consult the manufacturer. Our after-sales service will be at
your disposal. Non-compliance will lead to forfeiture of any and all rights to claims
for damages.
Table14: Pump faults
Fault Possible cause Remedy Action
Leakage along the shaft Worn shaft seal Replace the shaft seal. Check the pump for impurities.
Pump has been operated
without water.
Replace the shaft seal.
Pump does not run
smoothly (noise and
vibrations).
No water in the pump Prime and vent the pump.
No water supply Re-establish water supply. Check supply lines for clogging.
Bearings of pump and/or
motor defective
Have bearings replaced
by certified company.
Hydraulic pump
components defective
Replace hydraulic pump
components.
Wrong direction of
rotation of the pump
Interchange two phases
of the power supply
between frequency
inverter and motor.
Caution:
Prior to opening the
device, wait at least
10minutes for any
residual voltage to
dissipate.
System/pump does not
start.
No voltage at the
terminals
Check power supply.
Dry running protection
has tripped.
Re-establish water supply.
Reset system.
Check that the supply tank is
filled with water and that the
supply line to the pressure
booster system is not clogged.
Wrong setting of pressure
setpoint
Adjust pressure setpoint.
Drive fault Reset drive and note
down error code.
Insufficient flow rate and/
or pressure of the system/
pump
Air inside the pump Vent the pump.
Wrong direction of
rotation of the pump
Interchange two phases
of the power supply
between frequency
inverter and motor.
Caution:
Prior to opening the
device, wait at least
10minutes for any
residual voltage to
dissipate.
Flow rate of water meter
in suction line too low
Increase flow rate of
water meter.
System-side filter clogged Clean filter or check filter
for obstruction. If
required, replace filter.
Shut-off valve in outlet
and/or inlet closed
Open both shut-off
valves.

KSB Delta Basic MVP Specifications

General

Brand	KSB
Model	Delta Basic MVP
Category	Water Pump
Language	English