Accessory Tool; Emptying The System; Non-Return Valve - DAB esybox mini3 Instructions Pour L'installation Et La Maintenance

The system requires no routine maintenance operations.
However, below are the instructions for performing the special maintenance operations that may be necessary in particular cases (e.g. emptying
the system to put it away during a period of inactivity).

10.1 Accessory tool

With the product, DAB supplies a metal key with a hexagonal section (Fig.21) useful for performing some
special maintenance operations on the system, or during installation.
In particular, use the key for the orientation of the interface panel described in par. 2.2.2 or for opening the
door of the compartment next to the interface panel. If the key is lost or damaged, the operation can be
done using a standard 2mm allen wrench.

10.2 - Emptying the system

If you want to drain the water out of the system, proceed as follows:
1. disconnect the power supply;
2. turn on the delivery tap closes to the system so as to remove pressure from the system and empty it as much as possible;
3. if there is a check valve immediately downstream from the system (always recommended), close it so as not to let out the water that is in the
plant between the system and the first turned on tap;
4. interrupt the suction pipe in the point closest to the system (it is always recommended to have a check valve immediately upstream from the
system) so as not to drain the whole suction system;
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.
ENGLISH
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Figure 21
Figure 22