5. remove the drainage cap Fig.1 face E if vertical configuration; Fig.1 Face C if horizontal configuration) and let out the water inside (about 1.5 litres);

6. the water that is trapped in the delivery system downstream from the non-return valve integrated in the system can flow out at the time of

disconnecting the system, or on removing the cap of the second delivery (if not used).

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.

10.3 - 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. Although it is recommended to use fresh water and eventually fit filters

on input, if you notice abnormal operation of the non-return valve it can be extracted from the

system and cleaned and/or replaced by proceeding as follows:

1. remove the access door to the special maintenance compartment (Fig.1 Face F)

disengaging the 2 fixing screws with the accessory tool. It is advisable not to remove the

screws completely, so that you can used them to extract the door. Take care not to drop

the screws inside the system once you have removed the door (Fig.22);

2. using a screwdriver, remove the 1"1/4 cap so as to access the non-return valve (Fig.22);

3. using pliers, extract the cartridge of the non-return valve without rotating it, gripping it by

the jumper provided for the purpose (Fig.22): 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.22);

6. Screw on the 1"1/4 cap until it is snug: if the cartridge has not been pushed correctly in

place, screwing on the cap will complete its positioning (Fig.22);

7. reposition the door and tighten the 2 screws (Fig.22).

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 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. remove the cover of the technical compartment (Fig.1 Face A);

2. lift the rubber cover of the motor shaft access cap (Fig. 23);

3. using a 10mm hexagonal key, remove the motor shaft access cap (Fig. 23);

4. insert a straight tip screwdriver in the groove on the motor shaft and manoeuvre, turning in 2 directions (Fig. 23);

5. if it is turning freely the system can be started, after having replaced the cap and cover that have been removed;

6. if rotation is blocked and it cannot be removed by hand, call the assistance service.

ENGLISH

Figure 22

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DAB esybox mini3 Instructies Voor Installatie En Onderhoud pagina 74

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