Expansion Vessel; Troubleshooting - DAB E.Sybox mini 3 Instrucciones Para La Instalación Y El Mantenimiento

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 calcifica-
tions. 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. 22);
3. using a 10mm hexagonal key, remove the motor shaft access cap (fig.
22);
4. insert a straight tip screwdriver in the groove on the motor shaft and
manoeuvre, turning in 2 directions (fig. 22);
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 as-
sistance service.

9.5 - 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.
To access the valve of the expansion vessel, proceed as follows:
Figure 22

10 - TROUBLESHOOTING

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. 23);
2. slip the rubber cap off the valve or the expansion vessel (fig. 23);
3. regulate the valve as indicated in paragraph 1.2 (fig. 23);
4. reposition the rubber cap (fig. 23);
5. reposition the door and tighten the 2 screws (fig. 23).
Before starting to look for faults it is necessary to disconnect the
power supply to the pump (take the plug out of the socket).
GB
ENGLISH
Figura 23
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