6.10. The pipe sections before and after the water meter should be coaxial. Gaskets should be placed
concentrically in relation to the pipe. Eccentric installation of a water meter in a pipe is not permitted, in
particular the dislocation of gaskets between the water meter and the pipe so that they cover a part of
the free pipe cross-section at the water meter and interrupt the flow. In order for the connector ends to
be introduced in the right threaded connector projection, the pipeline should be able to spring back
about 3 mm.
6.11. Water flow through the water meter should correspond to the direction of arrows placed on both
sides of the body.
WARNING!!! When the water meter is connected, performing welding works is not allowed, as it will
cause it to be damaged.
7. Filling with water and start-up of flow transducers
7.1. Before installing the water meter, the pipeline should be flushed in order to remove contamination,
and the filter (if it is used) should be cleaned. During flushing, use a spigot to replace the water meter.
7.2. Before installation, check the operation of a water meter by starting a rotating motion of a rotor
while observing the rotation or the rotation of the counter indicators. Check the lead seal condition.
7.3. Before installing the water meter, water should be supplied freely to the pipeline, with the vents
open so that the air that leaves the system does not cause excessive water meter rotations, which
causes the device damage.
7.4. During operation, the valves before and after the water meter should be entirely open.
7.5. After performing all the actions related to the start-up, check the water meter operation by
observing the increase of the counter indication.
7.6. During operation, check whether the actual operating conditions correspond to the water meter
intended use, in particular in terms of permitted pressure, temperature and flow.
8. Maintenance, inspections and repairs
Water meter is an instrument which measurement capacity changes over time. Moreover, the
deterioration of this capacity is generally a result of aggressive water influence, that is why, after some
time (in particular after the legalisation period expires) it should be deinstalled from the mains,
inspected or repaired.
Expiry dates of the compliance assessments are specified in the metrologic regulations. After
deinstallation of the water meter from the mains, it is recommended to thoroughly check its indication
accuracy for the purpose of comparison, and only after this is done, start the disassembly and cleaning.
Do not use cleaning chemicals which have harmful influence on the materials from which the water
meter elements are made of. It is unacceptable to use for cleaning any chemical reagents which cause
corrosion of materials or which are solutions, particularly for plastics, or which cause accelerated
ageing of gaskets.
Repairs should be performed in specially prepared water meter repair stations, or in service plants.
When the repair necessitates replacement of parts, use only original spare parts supplied by Apator
Powogaz S.A. After the repair, the water meters are checked according to the current regulations.
9. Storage and transport
Water meters received from deliveries or deinstalled from the mains should be stored with counter face
up or on the side, in a closed room free from caustic, stinking vapours etc. which have a destructive
effect on the water meter condition. The room temperature should be between 5 and 30°C, and air
relative humidity no more than 80%. Both during transport and storage, the devices should be
protected from vibrations and in particular from shock which may cause damage of body or internal
elements. The transport should take place with covered means of transport in manufacturer's
packaging or a substitutive package which entirely protects the product from damage.
10. Malfunctions and removing them
If the counter does not indicate anything as the water flows, check whether the rotor is not jammed by
dirt. If the water meter does not work after cleaning and in any other case it is not working, give it to be
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