English (GB)
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* Applies only to pumps with sensor and with IO 113.
4. The pump operates
at below-standard
performance and
power consumption.
a) The impeller is blocked by
impurities.
Clean the impeller.
b) The direction of rotation is wrong. Check the direction of rotation and
possibly interchange any two of the
phases in the incoming power cable.
See section 4.1 Checking the direction
of rotation.
5. The pump operates,
but gives no liquid.
a) The outlet valve is closed or
blocked.
Check the outlet valve and possibly
open and/or clean it.
b) The non-return valve is blocked. Clean the non-return valve.
c) There is air in the pump. Vent the pump.
6. The power
consumption is high
(SEV).
a) The direction of rotation is wrong. Check the direction of rotation and
possibly interchange any two of the
phases in the incoming power cable.
See section 4.1 Checking the direction
of rotation.
b) The impeller is blocked by
impurities.
Clean the impeller.
7. Noisy operation and
excessive vibrations
(SE1).
a) The direction of rotation is wrong. Check the direction of rotation and
possibly interchange any two of the
phases in the incoming power cable.
See section 4.1 Checking the direction
of rotation.
b) The impeller is blocked by
impurities.
Clean the impeller.
8. The pump is clogged. a) The pumped liquid contains large
particles.
Select a pump with a larger-sized
passage.
b) A float layer has formed on the
surface of the liquid.
Install a mixer in the pit.
Fault Cause Remedy
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