Jet NCB, Instruction Manual

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6. POSSIBLE PROBLEMS, CAUSES AND SOLUTIONS.
Problems Causes Solutions
Wa t e r f l o w i s
insufficient Recirculation of water. Check correct fitting of components, and
particularly that the gasket has been
fitted.
Check correct pump dimensioning and
the diametre of the pipes. Maximum flow of the pump is small.
No air bubbles
emerge The filter (22) fitted in the hose is dirty
and air does not pass. 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.
Air passage at the jet body (12) is
obstructed by insects or foreign bodies.
The air regulator is closed.
The pump does
not start The capillary pipe (17) is disconnected or
has leaks. 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.
There is no electricity supply to the
installation.
I n c o r r e c t p r e s s u r e m i c r o s w i t c h
operation.
The pump stops
running The pump thermal cut-out switch
activates.
The motor-protection cut-out on the
panel throws.
The installation's differential circuit-
breaker switch triggers
Electrical connection failure Check for insulation or shunt-off faults.
Check that electrical connections are
correct.
Check that the pump ampere rating is
less than or equal to the cut-out trigger
rating.
Check that the premises is correctly
ventilated and that air passage of the
pump fan is not obstructed.
The pump does
not take in water The pump is not primed. 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.
The suction pipes are not sealed and the
pump takes in air.
Pool water level insufficient and air is
being taken in.
The suction piping is long and the pump
is higher than the swimming pool level.
The motor protec-
tion switch trig-
gers.
Condenser defective. Go to the technical service centre.
Replace if faulty.
Pump blocked by obstruction of the
turbine. The motor shaft must rotate slightly.
If not, the pump must be repaired by the
technical service centre.
Noise Air is entering the equipment. Stop leaks.
The pump must be repaired by the
technical service centre.
Remove them as explained in the pump
maintenance manual.
Noise from bearings
Foreign bodies in the pump.
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