NOCCHI JETINOX Bedienungs- Und Wartungsanleitung Seite 11

Start-up
Before starting the pump, fill the suction pipe (2) and the pump body (8) using the filling cap (9). Close the cap after
verifying that there are no leaks. Open the closing devices on the delivery pipe (i.e. the water cock) so that air can be
released from the suction cycle.
Insert the pump plug into a 230 V alternate current socket and press the switch.
PUMPS JET, NEWJET, JETINOX, AUTOJET are self-priming. Therefore, it is possible to start them without filling
the suction pipe with water. However, it is still necessary to fill the pump body. The priming operation requires a
few minutes. It may also be necessary to fill the pump body with water several times, according to the length and
diameter of the suction pipe. If the electropump is not used for a long period of time, it is necessary to repeat all
the operations described above before starting the pump.
Ch. 6 Operation of the AQUA-MATIC electronic pressure switch (Fig. 5, n. 12)
[AUTOJET 60/50, AUTOJET 70/50]
When the pump is connected to the mains for the first time, the following green LED's will light on the control panel (see
Fig. 2) to signal the presence of voltage and the operation of the electropump. The pump will run for about 15 seconds,
stopping in the "Ready" condition though AQUA-MATIC is inactive. The chamber inside AQUA-MATIC, containing water,
enables to solve the problems of small leaks in the system, preventing the start-up of the pump. The pump also starts
if a sudden decrease of the system pressure (opening of an intake point) occurs. The start-up pressure of the pump
can be set using the handle (indicator in bar) situated on AQUA-MATIC. When the set pressure is reached, a pressure
sensor will acknowledge the pump start-up. The start of the pump opens the delivery valve to allow the circulation of
the required amount of water. If there is no water, the protection of AQUA-MATIC, which prevents the pump from
running without fluids, will be enabled to avoid automatic start-ups. This protection is also enabled if the pressure
sensor fails to return to its initial position within 15 seconds and the delivery valve fails to open due to the lack of water.
The enabling of the protection is signalled by a flashing red LED. When ordinary operating conditions are resumed, it
will be necessary to operate the pump manually with the Reset button. AQUA-MATIC also has a thermal switch to
protect it from overheating. If the delivery valve stays open even when no water is requested, the temperature of the
fluid inside the device increases. A temperature sensor blocks the pump as soon as the temperature reaches a value
of 70° C. The enabling of the protection is signalled by the permanent lighting of the red LED. When minimum operating
conditions are resumed (40° C), it is necessary to operate the machine manually with the Reset button.
It is useful to notice that the disconnection of the pump from the mains causes a Reset condition. In particular, this
condition enables to remove the blocks caused by the enabling of the protections. This situation is particularly
favourable when the temperature of the fluid inside AQUA-MATIC is between 40° and 70° C, because in this case it is
possible to restart the pump without having to wait for it to cool down completely.
DANGER
Electric shock
risk
Ch. 7 Maintenance and troubleshooting
DANGER
Electric
shock risk
In ordinary conditions, series electropumps do not require any maintenance. To prevent possible problems, it is
advisable to periodically check the pressure supplied and current absorption. A reduction of the pressure may indicate
that the electropump is worn. Sand and other corrosive materials present in the delivery fluid cause a rapid wear and
a reduction of performance. In this case, it is advisable to use a filter. An increase in current absorption indicates the
presence of abnormal mechanical friction in the pump and/or the motor.
If the electropump is not going to be used for a long period of time (i.e. one year), it is advisable to empty it completely
(by opening the drain cap, see Fig. 1 n. 10), rinse it with clean water and store it in a dry location, where it can be
protected from frost.
The electronic AQUA-MATIC pressure switch (including the safety
cables) can be opened or replaced only by qualified personnel.
Make sure the machine is disconnected from electric power supply,
before performing maintenance operation.
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