Possible Problems, Causes And Solutions - Jet NCB Instruction Manual

6. POSSIBLE PROBLEMS, CAUSES AND SOLUTIONS.

Problems
Wate r fl ow is Recirculation of water.
insufficient
Maximum flow of the pump is small.
No air bubbles The filter (22) fitted in the hose is dirty
emerge and air does not pass.
Air passage at the jet body (12) is
obstructed by insects or foreign bodies.
The air regulator is closed.
The pump does The capillary pipe (17) is disconnected or
not start has leaks.
There is no electricity supply to the
installation.
I n c o r r e c t p r e s su r e m i cr o s w it c h
operation.
The pump stops The pump thermal cut-out switch
running activates.
The motor-protection cut-out on the
panel throws.
The installation's differential circuit-
breaker switch triggers
Electrical connection failure
The pump does The pump is not primed.
not take in water
The suction pipes are not sealed and the
pump takes in air.
The suction piping is long and the pump
is higher than the swimming pool level.
Pool water level insufficient and air is
being taken in.
The motor protec-
Condenser defective.
tion switch trig-
gers.
Pump blocked by obstruction of the
turbine.
Noise Air is entering the equipment.
Noise from bearings
Foreign bodies in the pump.
Causes
32
Solutions
Check correct fitting of components, and
particularly that the gasket has been
fitted.
Check correct pump dimensioning and
the diametre of the pipes.
Clean the filter (22) and remove
impurities.
Clean and ensure that air is passing to
the discharge pipe.
When the air regulator is opened bubbles
should emerge.
Check that the capillary pipe (17) is
correctly installed.
Wait for electricity supply to be restored.
Check electrical continuity at the
pressure switch by activating and
deactivating the button.
Check that the premises is correctly
ventilated and that air passage of the
pump fan is not obstructed.
Check that the pump ampere rating is
less than or equal to the cut-out trigger
rating.
Check for insulation or shunt-off faults.
Check that electrical connections are
correct.
Fill the suction body up to the level of the
suction connection.
Repair leaks.
Bleed air from the pump.
A check valve without spring pressure
must be mounted in the suction pipes to
prevent water draining during suction.
Raise the water level of the pool to at
least 10 cm above the Jet.
Go to the technical service centre.
Replace if faulty.
The motor shaft must rotate slightly.
If not, the pump must be repaired by the
technical service centre.
Stop leaks.
The pump must be repaired by the
technical service centre.
Remove them as explained in the pump
maintenance manual.