Astralpool ACQUA DOS Manuel D'installation page 7

TROUBLESHOOTING GUIDE
Problem
The pump is working
properly but the dosage is
interrupted
Insufficient flow capacity
Excessive or irregular pump
flow capacity
Broken diaphragm
The pump does not come on Insufficient power supply
EM00136915
Possible Cause
Valve blockage
Excessive suction height
Excessively viscous liquid
Valve leakage
Excessively viscous liquid
Partial valve blockage
Siphon effect on delivery
Transparent PVC pipe on
delivery
Pump not calibrated
correctly
Excessive back-pressure
Operation without liquid
Membrane not secured
correctly
rev. 1.0
Clean the valves or replace them if it is not possible
to remove the build-ups
Position the pump or tank so as to reduce the suction
height (pump under water head)
Reduce the suction height or use a pump with a
bigger flow capacity
Check that the ring nuts are properly tightened
Use a pump with a bigger flow capacity or reduce the
suction height (pump under water head)
Clean the valves or replace them if it is not possible
to remove the build-ups
Check the injection valve installation. Insert a back-
pressure valve if insufficient.
Use an opaque PE pipe on delivery
Check the pump flow capacity relative to the system
pressure.
Check the system pressure. Check whether the
injection valve is blocked. Check whether there are
any blockages between the delivery valves and the
injection point.
Check the presence of the foot filter (valve). Use a
level probe that stops the pump when the chemical
product in the tank has run out.
If the membrane has been replaced, make sure that
the same is correctly tightened.
Check whether the pump plate data corresponds to
that of the electricity network.
EN
Solution
5