OLIJU Aqualiju AC4.110.1A, Инструкция по установке и эксплуатации, Страница: 4 / 24

4
EN
8. PROBLEMS, POSSIBLE CAUSES AND SOLUTIONS
Caution! These operations must be carried out by specialized personnel.
Before performing any service operation, be sure that the unit is disconnected from the elctric power supply.
PROBLEM POSSIBLE CAUSE SOLUTION
The electropump does not
pump water. The motor
does not run.
- No power.
- Motor protection tripped.
- Demaged capacitator.
- Shaft blocked.
- A solid object is blocking the
impeller. - Check the voltage.
- Verify the cause and reset the switch. If
the thermal circuit breaker has tripped
wait for the system to cool down.
- Replace the capacitator.
- Verify the cause and unblock the
electropump.
- Disassemble the hydraulic part and
verify if the impellers rotate freely.
The motor runs but the
electropump does not
pump water.
- The pump is sucking air.
- The pump rotates in the wrong
direction (Three-phase pumps).
- Suction grid blocked.
- Check valve blocked.
- Low voltage.
- Make sure that the joints are air-tight.
Check that the liquid has not dropped
below the minimum level.
- Invert the electric phase connection of
rotation.
- Clean the suction grid.
- Clean or replace valve.
- Use electric cables of larger diameter.
The electropump stops
after running for a short
period of time because
one of the termal motor
circuit breaker trips.
- The power supply does not
correspond with the data on the
nameplate.
- The pump has run without liquid.
- Check the voltage on the power supply
cables leads.
- If the pump is equipped with a float
switch, verify if this is functioning
working it manualy. Reestablish the
water level before restart the pump.
If in spite of carring out the above operations the problem still persists contact the nearest service centre.