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MD 1670
Installation instructions for volumetric water meters
This manual is valid for the
(MID) fixed installation with
following meters: 612 family, 620
minimum vibration
family, 640 family
• Electromagnetic
class: E2 (MID) residential
Supplied Material:
• Climatic environment: from 5 °C
Each package contains:
up to 70 °C
• Water meter
• Meters have to be installed in a
• Optional connection kits if ordered
stress free condition
General Instructions:
Please also note the directions in
Please read this guide prior to
accordance with:
installing the water meter. The water
• ISO 4064-5:2017(installation
meter is hermetically sealed and
requirements)
therefore no servicing of the meter
• DIN 1988-200 (TRWI-
will be required. The water meter is
planning and implementation,
designed for use with potable water for
components, ...)
residential activities. The meters must
be stored in a dry, cool place, free of
Meters must be installed grounded
and
tension
contamination. Please make sure
mechanical stress on water pipes.
that during installation all hygienic
For this we recommend installing
standards and recommendations are
meters using a metal meter bracket
respected.
with length compensation fittings
(thread dimension acc. EN ISO 228-
NOTE:
1:200 Class B). In cases where the
These installation instructions apply
installation site is not prepared with
for volumetric water meters
these
brackets,
the permanent use of a potential
• Volumetric meters with electronic
compensator ("grounding kit"). This
register can be installed in all
will prevent serious accidents during
installation and operation due to
positions (see picture 12)
hazardous leakage currents.
• Volumetric meters with mechanical
The accessory grounding kit is also
register can be installed in all
available for purchase from Sensus.
positions, except with a top down
register (see picture 12) (due to
The meter does not need any straight
the risk of damaging the gears in
upstream or downstream pipe (U0D0).
the register)
STEP 1:
Permissible Operating Conditions
Before uninstalling the old meter first
• Cold water meter: from 0.1°C up
close outlet valve at output, then close
to 50 °C
inlet valve!
• Pressure stage: MAP16
Thoroughly flush pipe to prevent
• Mechanical environment: M1
contamination of the new meter with
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11
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10
dirt, sediments and/or particulates.
The infiltration of dirt, sediments
1)
environmental
and/or
particles
into
the
may damage it and prevent it from
1)
operating correctly.
1/1A Use new sealing washers
2 Install the meter in the correct
flow direction
STEP 2:
Connect meter on one side with the
unions
3/3AUse your hands to fasten the
unions! Then use key
free,
without
any
STEP 3:
Finalizing meter connection
4 Prevent rotation of the meter while
tightening unions
5 Repeat process for the remaining
we
recommend
connection as described in pictures
1-2-3-4. Then tighten the unions with
a wrench. The torque should be min.
20 Nm and max. 30 Nm.
6 Turn register in proper position for
optimum readout
STEP 4:
First filling
7 Inlet side: slowly open the inlet
valve
8/8A Check for leaks
12
12
640 family
612 & 620 family
ENGLISH
9 Outlet side: slowly open the outlet
valve
meter
Improper first filling may
lead to water hammer or
piston overspeeding which
can damage the meter and
prevent it from operating
correctly.
Note:
10 When using a non return valve
please use the appropriate gaskets
depending on the shape of the
connection pipe.
11 Water meters are calibrated
measuring
instruments.
Exposing
them to hard shock or not protecting
them against freezing can cause
irreparable damage. Exposure to
excessive heat can damage the
meter.
12 Orientation of the display
STEP 5
:
1)
All electronic register settings and
functions will be automatically and
correctly activated once the first
volume of water goes through the
meter or with an activation radio
command. Check Segment test and
the mode of the display
1) additional information for 640-C/M/MC
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