Water Connection - LAVAZZA LB 4712 Maintenance Manual

5.3. Water connection

Remove any rubber plugs which may be inserted in the
valve fixtures of the softener.
connect the water mains (2) to the softener inlet (8)
using the flexible pipe provided.
Rinse the resins of the softener and check that the water,
which initially comes out yellowish, comes out clean.
connect the softener outlet (9) to the machine inlet (6).
connect the drain cup of the machine (4) to the sewer
drain (3) by using the special pipe provided. Take care to
avoid tight bends or kinks and keep a sufficient inclina-
tion for drain water evacuation.
Note
All filling connections are 3/8 male gas type. The
drain tray is connected with a pipe of 16 mm. inter-
nal diameter.
Warning
The water mains must provide cold water for human
consumption (drinking water) at a pressure between
1.5 and 5 bar. If the pressure is greater than 5 bars,
connect a pressure reducer upstream from the
pump.
Place a tap (11) and a one-way valve (10) on the
water mains so that it will be possible to cut off the
water to the machine.
In order to prevent it from being damaged, it is ad-
visable to install the softener where it is protected
from accidental blows.
To prevent the water from freezing, install a softener
(11) only where the room temperature is more than
5°C .
Connect the outlet softener (9) or the water mains
(2) to the machine inlet (6) directly.
When connecting the machine cup to the sewer
drain tray to the sewer drain, avoid tight curves or
kinks and make sure that there is a sufficient incli-
nation for water to flow out of the drain.
The drain must be connected to a siphon that can
be periodically inspect and cleaned in order to avoid
the backflow of unpleasant odours.
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Maintenance manual for technical assistance
To avoid oxidation and damage to the machine over
time, do not use iron fittings for the hydraulic con-
nection, even if they are zinc plated.
Attention
The hydraulic connection must be made in com-
pliance with local national rules.
If an external tank is used: the connection pipe bet-
ween the machine and the tank must not exceed 150
cm.
For the European Community: for both hydraulic
connection to the water mains as well as the con-
nection to the external tank, a one-way valve (9)
must be placed upstream of the machine as indica-
ted by the standards EN 1717.
Water and drain connection must be carried out ac-
cording to the International Plumbing Code 2003 of
the International Code Council (ICC), or to the Uni-
form Plumbing Code 2003 of the IAPMO. For ma-
chine installation, place a one-way valve, according
to national rules.
Note
All the machines are equipped with an automatic
water filling with a time control device which allows
the boiler to be filled with water within a maximum
period of time. This function keeps water from co-
ming out of the boiler valve (flooding) and prevents
the overheating of the power pump. If the period of
time does not last enough to fill up the boiler com-
pletely, switch the machine off and on again and re-
peat the above mentioned operations.
When the machine is started for the first time, it is
advised to fill the boiler manually using the manual
water entry valve.
Manual code 10066846 / Rel. 0.00 / March 2012