12
In the case of horizontal installations, before inserting the sensor
(A) drain the liquid contained in the ball using the rear cock (B).
The presence of liquid may impede the correct positioning of the
sensor in the valve body.
Ensure that the sensor is correctly inserted without exerting force
on the lower tabs (C).
Shut-off valve fitted for flow rate measuring sensor with
Vortex effect – 111 series
Correct installation of the sensor
The sensor is positioned in place of the end cap of the shut-off valve
on the flow manifold when the valve is in the closed position.
To swap the cap with the sensor you need to:
4)
Remove
the
seal
ring.
3)
Remove the knob and the
ring stop.
5)
Take out the cap and insert the measuring sensor, making sure
that it is correctly positioned by means of the holder tabs. The
tabs, when seated, must slide underneath the sealing profile
when the sensor rotates.
8)
Insert the spacer so as to
ensure the correct position
of the ring and turn the
control knob to the closed
position.
7)
Insert
the
measuring
sensor and retain it with the
seal ring.
9)
Open the ball using the specific knob. These operations must
also be repeated carefully when replacing the sensor with the
closure cap after the balancing operations are complete.
For balancing remove the knob and insert the plug of the flow
rate meter.
1)
Turn the control knob to the
open position.
2)
Close the valve.
Flow rate regulation is performed by using the special knob to
control the shut-off valve on the return manifold in correspondence
with the same circuit, until the instrument indicates the design
setting. This operation must be repeated on the following branches
to obtain the desired flow rate.
A
B
C
