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9. Troubleshooting
!
Before performing any operations, read the following guide:
Problem
The pump's motor
does not start or
stops suddenly after
a few seconds
The pump is running
but no water is being
delivered
The flow rate is
insufficient
The pump is running
but the delivery is
suddenly reduced
!
Cause
No power supply
The thermal-amperometric motor
protector has deactivated the
pump due to overload.
Solid particles have obstructed the
suction filter
The pump is not sufficiently
submerged
Clogged suction filter
There is no outflow of air because
the delivery pipe is obstructed (it
may be throttled)
Clogged suction filter
Diameter of external pipe is too
small
Too high head
Clogged suction filter
Warning!
All service operations on the electrical and hydraulic components
must be performed by an authorized service centre.
ENGLISH
Solution
Check the electrical connections.
Unplug the pump and clean it (see
section 8.1. Precautions and
Cleaning)
Check the water temperature (max.
35° C)
Unplug the pump and clean it (see
section 8.1. Precautions and
Cleaning)
Lower the pump deeper in the
water
Unplug the pump and clean it (see
section 8.1. Precautions and
Cleaning)
Remove obstructions from delivery
pipe
Unplug the pump and clean it (see
section 8.1. Precautions and
Cleaning)
Use a larger diameter pipe
Reduce the head
Unplug the pump and clean it (see
section 8.1. Precautions and
Cleaning)
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