DAB E.sybox 50, Instruction For Installation And Maintenance

Page: 69 / 934

ENGLISH
66
GB
If the surface is not flat, unscrew the foot that is not touching and adjust
its height until it contacts the surface so as to ensure the stability of the
system. The system must in fact be placed in a safe and stable position,
ensuring that its axis is vertical: it must not be in an inclined position.
2.1.1 Hydraulic connections
Make the connection at input to the system through the mouth on Face F
marked “IN” in Fig.7 (suction connection). Then remove the respective cap
with the aid of the accessory tool or with a screwdriver.
Make the connection at output from the system through the mouth on Face
F marked “OUT” in Fig.8 (delivery connection). Then remove the respec
-
tive cap with the aid of the accessory tool or with a screwdriver.
All the hydraulic connections of the system to the plant to which it can be
connected are of the threaded female type 1” GAS, made of brass.
I
f you intend to connect the product to the plant with fittings that
have a diameter larger than the normal 1” pipe (for example the
ring nut in the case of fittings in 3 pieces), make sure that the 1”
Gas male thread of the coupling protrudes at least 25mm from
the above diameter (see Fig.8)
With reference to its position with respect to the water to be pumped, the
installation of the system may be defined “above head” or “below head”. In
particular the installation is defined “above head” when the pump is placed
at a level higher than the water to be pumped (e.g. pump on the surface
and water in a well); vice versa it is “below head” when the pump is placed
at a level lower than the water to be pumped (e.g. overhead cistern and
pump below).
< 25 mm > 25 mm
Figure 8
If the vertical installation of the system is of the “over head” type,
it is recommended to fit a non-return valve in the suction section
of the system; this is to allow the operation of loading the system
(par. 2.1.2).
If the installation is of the “over head” type, install the suction pipe
from the water source to the pump in such a way as to avoid the
formation of goosenecks or siphons. Do not place the suction
pipe above the pump level (to avoid the formation of air bubbles
in the suction pipe). The suction pipe must draw at its entrance
at a depth of at least 30cm below the water level and must be
watertight along its whole length, as far as the entrance to the
electropump.
The suction and delivery pipes must be fitted so that they do not
exert any mechanical pressure on the pump.
2.1.2 Loading Operation
Installation above head and below head
Installation “above head” (par. 2.1.1): access the technical compartment
and, with the aid of the accessory tool (Fig.3_point 5) or with a screwdriv
-
er, remove the filling cap (Fig.3_point 6). Fill the system with clean water
through the loading door, taking care to let the air out. If the non-return
valve on the suction pipe (recommended in paragraph 2.1.1) has been
placed close to the system entry door, the quantity of water with which to
fill the system should be 2.2 litres. It is recommended to fit the non-return
valve at the end of the suction pipe (foot valve) so as to be able to fill it
quickly too during the loading operation. In this case the quantity of water
necessary for the loading operation will depend on the length of the suction
pipe (2.2 …).
Installation “below head” (par. 2.1.1): if there are no check valves between
the water deposit and the system (or if they are open), it loads automati
-
cally as soon as it is allowed to let out the trapped air. So slackening the
filling cap (Fig.3_point 6) enough to vent the trapped air allows the system
to load completely. You must survey the operation and close the loading