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The measuring device may only be installed in a
■
frost-proof location and the ambient temperature
must not exceed +55 °C.
The measuring device should be installed, where
■
possible, at the deepest point of the pipe instal-
lation so that air bubbles are not able to form
in the measuring device and the pipe is always
completely filled.
The water temperature must not exceed the per-
■
missible 50 °C (T50).
When using lubricants / assembly pastes e.g. for
■
the seals, it must be ensured that these are suit-
able for contact with drinking water.
If there is a risk of frost, shut off the system and
■
empty it completely (including the measuring
device!), removing the measuring device if neces-
sary.
Installation manual
Read the installation instructions carefully right
■
up to the end before beginning installation.
Prior to installing the measuring device, the pipe
■
system is to be carefully flushed.
Close the valves upstream and downstream of the
■
measuring device and relieve the pressure at the
installation point.
Dismantle existing measuring device or adapter
■
piece.
Old seals must be removed immediately after dis-
■
mantling the existing measuring device or adapter
piece. The corresponding sealing surfaces must be
cleaned and checked for damage.
Check before starting installation:
■
–
that all sealing surfaces are plane and free of
damages such as notches, grooves or similar.
–
all information on the dial/register cap/type
plate must be readable.
–
the measuring device is suitable in design,
size, temperature range and pressure rating
for the installation site.
Only use new and flawless sealing material.
■
It must be ensured that the flow direction of the
■
measuring device matches that of the pipe.
Screw on the swivel nuts by hand and tighten with
■
a suitable tool. Make sure that the seals are seated
correctly.
It must be ensured that the meter is installed in
■
a tensionless state in the pipe. In the case of an
installation that is not tensionless, the housing of
the measuring device can be damaged and water
may escape.
To prevent damage to the measuring device
■
caused by pressure surges after installation, the
pipe must be filled slowly after installation.
The measuring device must be easily accessible
■
at all times after installation to guarantee that the
key data and the conformity/metrology mark can
be read at all times.
Check all sealing points for leaks after installation.
■
We recommend securing the connection points
■
against unauthorised disassembly with a user
safeguard. It should not be possible to remove or
loosen the guard without visibly damaging it.
Note on short overall lengths
Use a screwdriver/metal rod (Ø max. 5.2 mm) or simi-
lar tool to hold the short overall lengths (110 mm –
145 mm) when tightening the screw connections.
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