W-30 WR 2W
2.2. Initial Start-up - The Control Valve and the Pressure Reducing Application
1.
Make sure that the upstream and the downstream isolation valves are closed [
12a
] and [
12b
].
2.
Turn off the manual
2
-way ball valve at the downstream [
3
B] port of the valve.
3.
Slowly open the upstream isolation valve [
12a
].
4.
Turn on the manual
2
-way ball valves of the upstream [
3
A] and the downstream [
3
B] ports of the valve.
Adjusting the two required downstream pressure limits:
5.
Slowly open the downstream isolation valve [
12b
], water starts to flow to the pipeline and creates a downstream
flow demand.
6.
Adjust the low pressure pilot valve [
5
] first, then the high pressure pilot valve [
4
], as follows:
Low Pressure pilot valve adjustment
7.
Do NOT turn the controller on, and do NOT energize the solenoid valve [
7
], and do NOT override the solenoid
position manually.
8.
Increase (or decrease) the low pressure pilot valve [
5
] set point as per pilot valve adjustment steps A to C below.
High Pressure pilot valve adjustment
9.
Turn ON the controller and set the procedure to activate the solenoid valve [
7
], or override the solenoid position
manually.
10.
Increase (or decrease) the high pressure pilot valve [
4
] set point as per pilot valve adjustment steps A to C below.
Pilot valve adjustment principle
A.
To increase the downstream pressure limit (the set point), turn the adjusting bolt of the required pilot valve [High
or Low pressure pilot) clockwise, ¼ turn at a time, allowing
2
-
5
seconds between turns for the valve to respond.
Monitor the pressure gauge [
6
] and continue the process until the required downstream pressure limit is
achieved.
B.
To decrease the downstream pressure, turn the adjusting bolt of the pilot valve counterclockwise, ¼ turn at a
time, allowing
2
-
5
seconds between turns for the valve to respond. Monitor the pressure gauge [
6
] and continue
the process until the required downstream pressure limit is achieved
C.
Prevent the adjustment bolt of the pilot valve from turning by turning its locking nut clockwise until it touches the
pilot valve spring cover. Tighten the locking nut carefully.
Valve Operation Modes
To open the valve manually, open the downstream ball valve [
3
b] and close the upstream ball valve [
3
a].
Please note:
By doing so you will have no control over the downstream pressure; it is possible that your system
will be exposed to excess pressure. The valve cannot fully open when the control loop is of a two-way type.
To close the valve manually, open the upstream ball valve [
3
a] and close the downstream ball valve [
3
b].
To maintain the preset downstream pressure, open both ball valves [
3
a &
3
b].
Please note
: the controller determines which of the two hydraulic pilot valves are in operation mode.
Summary of Contents for Eliptix W-30 WR 2W
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