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is due to improper handling or another cause
which is not due to a fault in the pump, for
example, an electrical fault.
In the following list you will find possible
faults, causes and repair tips. All measure-
ments must be carried out when the pump
is disconnected from the electrical network. If
Malfunction
The pump is not discharging any
liquid, the motor is not running.
The motor is running, but the pump is
not discharging any liquid.
The pump stops after a short time of
operation because the thermal motor
protection feature has triggered.
you cannot repair the pump yourself, contact
your dealer or customer service. Major re-
pairs should only be carried out by specialist
personnel. Please note that we are not res-
ponsible for any damage caused by improper
handling.
Possible cause
No current.
Thermal motor protection feature has
triggered. (for information on opera-
tion with liquids > 50°C, see the note
in Technical data).
The min. suction level was fallen short
of; possibly incorrect setting of the
Aqua sensor, motion of Aqua sensor
restricted, Aqua sensor defective.
The capacitor is defective.
The pump wheel is blocked.
The Aqua sensor is defective.
The intake openings are clogged.
The pressure line is clogged.
Air penetrates into the pump body.
Check valve (non-return valve), if
present, is blocked or defective.
The electrical supply does not
correspond
to the information given on the type
plate.
Pump or intake openings are blocked
by solids.
Elimination
Please use a device complying with
GS
(German technical supervisory
authority) to check for the presence
of voltage (safety information to be
observed!). Please verify the correct
position of the plug.
Separate the pump from the electrical
mains, allow the system to cool down,
eliminate cause.
Make sure that the minimum suction
level is not fallen short of; if neces-
sary, adjust Aqua sensor properly; in
the case of a defective Aqua sensor,
please contact customer service.
Please contact the customer service
department.
Eliminate blocking of pump wheel
Please contact the customer service
department.
Remove possible congestion.
Remove possible congestion.
Start pump several times so that the
entire air will be driven out.
Eliminate blocking of the check valve
(nonreturn valve) or replace, if
damaged.
Please use a device complying with
GS (German technical supervisory
authority) to check the voltage of the
lines of the connection cord (safety
information to be observed!)
Remove possible congestion.
GB
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