ENGLISH
GB
110
tool rather than the cartridge. If the key is lost or damaged, the
same operation can be performed with pliers.
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.
10.4 - 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
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the pump, thus increasing the resistance on starting. In this case it may
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the motor shaft from outside is guaranteed and a groove is provided at
the end of the shaft. Proceed as follows:
1- remove the motor shaft access cap as in Fig.29;
2- insert a straight tip screwdriver in the groove on the motor
shaft and manoeuvre, turning in 2 directions;
3- if it turns freely, the system can be started;
4- if rotation is blocked it cannot be removed by hand, call the
assistance service.
10.5 - Expansion Vessel
See paragraph 1.2 for the operations to check and adjust the air pressure
in the expansion vessel and to replace it if it is broken.
Due to the cartridge remaining in its seat for a long time and/
or to the presence of sediment, the force needed to extract the
cartridge might be such as to damage the accessory tool. In
this case it is intentional, because it is preferable to damage the
Figura 29
1 2
3 4
5 6
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