KSB Hya-Rain, Installation & Operating Manual

Page: 51 / 64

9 Trouble-shooting
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Hya-Rain/Hya-Rain N
9 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 instruction 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 customer service is required.
Table 19: Trouble-shooting
Fault Possible cause Remedy
Pump is running, but does not
deliver. ▪ Pump has not been primed.
▪
Excessive suction losses
▪ Prime the pump.
▪
Reduce suction head.
▪
Choose larger cross sections.
▪ Leaking suction line ▪ Eliminate leakage
▪ Air pocket in suction line ▪ Fill suction line or lay with rising slope.
▪ Suction strainer clogged ▪ Clean the suction strainer.
▪ Discharge line shut off ▪ Open discharge line.
Excessive frequency of pump
starts ▪ Leaking consumer
installation ▪ Eliminate leakage in consumer installation.
▪ Leaking swing check valve ▪ Fit new swing check valve and/or new
pump control unit.
▪
Very low level of
consumption
▪
Minimum flow rate not
achieved
▪
Increase toilet flush volume, clean strainer
in toilet cistern if necessary.
Pump is running but delivering
insufficient flow rate or
pressure. ▪ Pump takes in air. ▪ Check suction line.
▪
Suction strainer clogged
▪
Clean the suction strainer.
Pump stops during operation. ▪ Power failure
▪ Undervoltage
▪ Check power supply.
▪ Thermal switch tripped
because of overheating ▪ Check pump for smooth operation.
▪ Earth leakage circuit breaker
has tripped. ▪ Have the insulation resistance checked by a
trained electrician.
Pump stops during operation;
"fault" is indicated.
▪
Air in suction line
▪
Flush the suction line by opening several
consumer installations and pressing the
reset key for approx. 3 to 5 minutes.
System does not start. ▪ Pump control unit fault ▪ Press the reset key or interrupt the mains
voltage.
System does not stop. ▪ Foreign object in pump
control unit ▪ Clean the pump control unit; replace it if
necessary.
Excessive noise level
▪
Pump in contact with
securing screws
▪
Align the pump manually ensuring that it
does not come into contact with the
screws.
Tank overflowing ▪ Dirt deposits in valve ▪ Remove dirt/limescale deposits in valve;
replace float switch if necessary.
Err (alarm displayed)
2)
▪
Fault at connection or sensor
▪
Check control cable in the rainwater
storage tank.
▪
Replace sensor.
2) For Hya-Rain N only