MADDALENA ElecTo SONIC, Инструкция по установке, использованию и техническому обслуживанию

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2 Installation
2.1 Receipt of the product
1x
Optional accessories:
– Fittings kit
– Gasket kit
– Gasket
– Non-return valve
l
WARNING!
The instruction manual is an inte-
gral part of the device and should
therefore be read and stored
carefully.
d
PROHIBITED
Packaging material must be prop-
erly disposed of and kept out of
children’s reach as it may repre-
sent a hazard. Disposal must be
performed in line with applicable
laws.
2.2 Assembly
Authorised personnel: specialised installer
or plumber, assigned by the metering oper-
ator.
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WARNING!
Only authorised and suitably
trained personnel with sufficient
technical experience may install
and operate the device.
Before installing the device, make sure that
the two sections of tube are even to prevent
mechanical stress, clean them with care (es-
pecially in the case of empty tubes) and let
water run for a while, using a stub pipe on
the tube instead of the meter.
If there is no water in the pipeline, open the
valve upstream of the device before install-
ing it. This is necessary because opening
the valve after installation is complete may
cause air suction that could damage the de-
vice.
Before using the meter, first fully remove air
from the pipe and the device itself. The in-
terception/adjustment valves must be fully
open when doing this. Open the valve at the
start first and then the valve at the end.
When replacing the meter, it is recommend-
ed to replace the gasket on the fitting. Rec-
ommended gasket hardness: minimum 80
Shore A.
Tighten the nut with a torque wrench and
use a counter wrench to hold the meter in
position. Maximum tightening torque: 40
Nm.