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Idiomas disponibles
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Though essentially drained, the system is unable to expel all the water that it contains.
During handling of the system after emptying it, some small amounts of water may probably leak out from the
system.
It is always advisable to use a three-piece connector at the suction as well as delivery to be able to execute
point 5 easily.
9.3 Non-return valve
The system has an integrated non-return valve which is necessary for correct operation. The presence of solid bodies or
sand in the water could cause malfunctioning of the valve and therefore of the system.
and the presence of a filter at the inlet is recommended, if the non-return valve is seen to operate abnormally, it can be
removed from the system and cleaned and/or replaced by proceeding as follows:
1.
drain the system by following points 1 to 6. of Section 9.2;
2.
using a screwdriver or special accessory meant for the purpose remove the breather cap to be able to access
the non-return valve (Fig. 8);
3.
using pliers, extract the cartridge of the non-return valve without rotating it, gripping it by the jumper provided for
the purpose (Fig.8): the operation may require a certain effort;
4.
clean the valve under running water, ensure that it is not damaged and replace it if necessary;
5.
put the complete cartridge back in its seat: the operation requires the force necessary to compress the 2 O-
Rings
(Fig.8);
6.
screw the breather cap to fit flush: if the cartridge has not been pushed correctly into place, screw the cap in to
position it completely (Fig.
To remove the non-return valve, the delivery piping section should be drained completely.
Should one or more O-rings be lost or damaged during maintenance operations on the non-return valve, they
must be replaced. Otherwise the system might not work correctly.
9.4 Motor shaft
The electronic control of the system ensures smooth starts so as to avoid excessive stress on the mechanical parts and
thus prolong the life of the product. In exceptional cases this characteristic could cause problems in starting the pump:
after a period of inactivity, perhaps with the system drained, the salts dissolved in the water could have settled and
formed calcification between the moving part (motor shaft) and the fixed part of the pump, thus increasing the resistance
on starting. In this case it may be sufficient to help the motor shaft by hand to detach itself from the calcifications. In this
system the operation is possible because access to the motor shaft from outside is guaranteed and a groove is provided
at the end of the shaft. Proceed as follows:
1.
using a 10mm hexagonal key, remove the motor shaft access cap (fig.9);
2.
insert a straight tip screwdriver in the groove on the motor shaft and manoeuvre, turning in 2 directions (fig. 9);
3.
if it is turning freely the system can be started, after having replaced the cap and cover that have been removed;
4.
if rotation is blocked and it cannot be removed by hand, call the assistance service.
ENGLISH
8).
Figure 8
19
Although the use of clear water
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