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4
I
NSTALLATION PROCEDURE
WARNING:
This equipment should be installed, adjusted, and serviced by qualified
water industry maintenance personnel familiar with the construction and operation of
the equipment and the hazards involved. Failure to observe this precaution could result
in damage to the water network.
The installer will be required to become familiar with the use of IDT as it is used at
various parts of the installation process. (e.g., It is required in order to bleed air out of
the system, test Sentinel 2 and Hydroswitch operation, and program a Sentinel 2).
Summary of system selection and Installation:
The system can be fitted to an operating PRV, however some flow pressure variation will
be experience whilst testing the system. Installation consists of various activities
including:
•
Choose a suitable Sentinel2 unit (i.e., model number) for the PRV being controlled
and any additional parameters that are required to be logged.
o
The interface for Flow measurements must be compatible with the flow
meter. This is a required input for Flow-based pressure control.
o
Pressure measurement transducers must be suitable for the pressure range
of the PRV upstream and downstream pressures.
o
To log additional parameters, select a model with the required interfaces.
•
Determine the most appropriate control method for the PRV (time, flow or
combined time and flow).
•
Select an appropriate connection scheme for the PRV and ensure pipes and
accessories are available; Refer to the example installation diagrams within this
guide. Pay attention to the plumbing differences required if the upstream water
pressure exceeds 90m.
•
Choose suitable positions and mounting method for the equipment including the
antenna; Fix in location and connect any cables.
•
Attach a communications cable between Control Box and PC for set-up of the
system.
•
Program the required pressure profile and other settings into the Sentinel.
o
Read the current configuration.
o
Test the Hydroswitch prior to plumbing it into the PRV control.
o
Make any changes required to the on-screen settings.
o
Program the Sentinel 2 with the on-screen settings.
o
Re-zero any pressure transducers at atmospheric pressure (not water
pressure).
•
Fit the mechanical actuator onto the PRV pilot. Set the range of the actuator
(required mechanical adjustment) to maximum and minimum required pressures.
•
Plumb the Sentinel system into the PRV. Connect any transducers.
•
Activate the Sentinel to begin logging measurements and controlling the PRV.
•
Adjust the needle valve as required for gradual water pressure changes when
switching between high and low pressures.
•
Bleed and test the operation of the system.
•
Test communication with the central computer is OK (i.e., a call-in test).
