GB
IE
Troubleshooting
Faults
Causes
Mains voltage is not applied
Pump does
not start
Float switch (1) does not switch
Water level too low during com-
missioning
Thermal protection switch has
Pumps has
switched off
no discharge
Filter cover (22) / Filter (23)
blocked
Pump opera-
ting but not
Pressure line closed
pumping
Pump performance reduced due
to heavy dirt contamination or
abrasive water impurities
Float switch (1) cannot sink
Flow rate
insufficient
Filter cover (22) / Filter (23)
blocked
Pumping capacity reduced due
to very dirty and abrasive ad-
mixtures of water
Motor contactor disconnects the
pumps because of water pollu-
Pump switch-
tion that is too severe
es off after a
short period
Water temperature too high, mo-
tor contactor breaks
26
Remedies
Check plug socket, cable, line and
plug, where appropriate, have re-
paired through electrical specialist
Check the position of the float switch
Immerse pump deeper
Wait until the motor switches on again
after cooling down
Pull out the mains plug and clean the
suction foot/impeller
Clean the filter cover/filter
Open the shut-off valve (16) on the distri-
butor or other taps, nozzles, etc.
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary
(see "Cleaning, maintenance and sto-
rage")
Check the position of the float switch
Clean the filter cover/filter
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary
(see "Cleaning, maintenance and sto-
rage")
Pull out the mains plug and clean.
Note maximum water temperature of
35°C!