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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 (
(
Pump oper-
ating 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
Filter cover (
insuffi cient
(
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
22) / Filter
23) blocked
22) / Filter
23) blocked
Remedies
Check plug socket, cable, line and
plug, where appropriate, have re-
paired through electrical specialist
Check the position of the fl oat 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 fi lter cover/fi lter
Open the shut-off valve (16) on the dis-
tributor or other taps, nozzles, etc.
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary (see "Cleaning, mainte-
nance and storage")
Check the position of the fl oat switch
Clean the fi lter cover/fi lter
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary (see "Cleaning, mainte-
nance and storage")
Pull out the mains plug and clean.
Note maximum water temperature of
35°C!
GB
MT
27
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