E-RM 30
Installation and service manual
M2016/09f[EN]
9. When using typical connectors, using other straight sections before (U0) and after (D0) the device is
not required.
However, in case of installing devices after a double elbow. Non – return valve or a pupm, provide
a straight pipe section L=5xDN (device nominal diameter) before the device (U5) and after the
device L1=3xDN (D3) (Illustration 5: Water meter installation).
10. The pipe sections before and after the water meter should be coaxial. Gaskets should be placed
concentrically in relation to the pipe.
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 a
demage.
8.2.6. Filling with water and start – up of flow transducers
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.
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.
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.
4. During operation, the valves before and after the water meter should be entirely open.
5. After performing all the actions related to the start-up, check the water meter operation by observing
the increase of the counter indication.
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.
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Ilustration 6: Sample permitted installation positions
1 – horizontal orientation (class B: R100 – H)
2,3 – diagonal orientation (class A: R40 to 63 – V)
4,5,6 – vertical orientation (class A: R40 to 63 - V)
