55
4.15
T
ESTING THE
A
CTUATOR AND
PRV
P
RESSURE CHANGE RESPONSE
Ensure the PRV controller is activated.
(Click on the Start Control button if it is not
already green).
The PRV response to actuator changes
should be tested by switching between
Low and High pressures several times to
ensure it is operating correctly and that
the time the PRV takes to respond is
suitable for the water network.
It is important that the pressure does not
change too quickly to prevent damage to
the PRV, pipe network, or downstream
equipment and users (e.g., sudden water
pressure surges and dips, water-hammer,
or any other effects).
Adjust the needle valve
within the pilot
control to give the required response time
and also ensure a smooth pressure
transition when switching.
This can be achieved by setting a target
pressure (High or Low) within the Manual
Over-ride section, selecting the override
time period for testing, and then clicking
on the Override button. The system
should gradually change to either the High
or Low pressure settings and then stabilise.
The pressure can be verified using an external pressure meter or by using the Sentinel 2
pressure transducers with IDT.
To use the Sentinel 2 transducers
, click the “Live Values” button. The display will update
to show pressure and flow values. (Other buttons are disabled whilst this is operating;
click on the “Stop” button to re
-enable the other button controls).
