54
Set the Sentinel to Override to a target pressure
of Low for a suitably long duration (e.g. 30 mins).
This will open the path between the 3-way tap
and vent.
Change the position of the 3-way tap, allowing water to enter the red pipe from the PRV
service valve. Air and water should escape into the actuator and its pipework. Move the
tap to face the green pipe to allow water to escape towards the vent pipe. Repeat as
necessary to bleed most of the air from the actuator.
Finally leave the tap in a position which connects the solenoid valve pipe through to the
actuator.
Use the Manual Override controls within the PRV Installation tab of IDT to bleed air out
of the pipework:
Cycle between a target pressure of High and
Low (several times) to allow air to bleed from the
pipework.
4.14
T
EST
P
RESSURE TRANSDUCERS
If pressure transducers are fitted, select the PRV Installation tab of IDT.
Click on the “Live Values” button.
The display will show readings for any fitted
transducers. E.g.:
•
Upstream Pressure (in metres)
•
Downstream Pressure (in metres)
•
Flow (in l/s)
Confirm the values are as expected.
Click the button once more to stop displaying
the readings.
35.3
25.3
High
32.8
