Motor Shaft - Granit COMFORT Premium C-85 Instrucciones De Instalación Y Mantenimiento

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.

9.5 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
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