A.R.I. Eliptix R-30 SRM 3W, Установка, Эксплуатация, Обслуживание, Страница: 11 / 16

R-30 SRM
2. Make sure that there is a downstream flow demand
.
3. Turn the # 2 a pilot valve’s locking nut counter clockwise, until it touches the adjusting bolt head.
4.
Make sure that the
3
-way selector [
3
] on its “AUTO” position.
5.
Turn the #
2
a pilot valve’s adjusting bolt clockwise until valve starts to open.
6.
To increase the downstream pressure, turn the adjusting bolt clockwise, one turn at a time, allowing sometime
between turns for the valve to respond. Downstream pressure is shown on your pressure gauge. Continue until
required pressure is reached.
7. To decrease the downstream pressure, turn the adjusting bolt counterclockwise, one turn at a time, allowing
sometime between turns for the valve to respond. Downstream pressure is shown on your pressure gauge.
Continue until required pressure is reached.
8. When the required pressure is reached, prevent the adjusting bolt from turning, and turn the locking nut clockwise
until it touches the pilot bonnet. Tighten the nut carefully.
The pressure Sustaining Application:
1. The following is a general description of the Pressure Sustaining Application - Pilot 2b :
The pressure-sustaining pilot is designed to maintain a minimal preset upstream pressure by releasing excessive
pressure to the downstream system.
When the line upstream pressure rises above the preset point the valve slightly opens to release the excessive
pressure to the downstream system and maintain the upstream pressure at the pre-set level.
When the upstream pressure drops below the setting the valve closes.
Pipeline water flows constantly through the control loop. The pilot senses the upstream pressure through its #
1
port.
When the upstream pressure is higher than the pilot's pressure settings, the pilot decreases the internal pressure
of the control chamber, causing the valve's diaphragm to slightly open and decrease the upstream pressure back
to the required settings level.
When the upstream pressure is lower than the pilot's pressure settings, the pilot increases the internal pressure of
the control chamber, causing the valve's diaphragm to slightly close and increase the upstream pressure back to
the required settings level.
2. Make sure that there is a downstream flow demand
.
3. Make sure that the upstream pressure is higher or equal to the required pressure.
4. Turn the # 2b pilot valve’s locking nut counter clockwise, until it touches the adjusting bolt head.
5. Turn adjusting bolt counter-clockwise until the valve starts to open.
6. To increase upstream pressure, turn the adjusting bolt of the # 2 b pilot clockwise, one turn at a time, allowing
sometime between turns for the valve to respond. Downstream pressure is shown on the pressure gauge ( 5b ).
Continue until required pressure is reached.
7.
To decrease upstream pressure, turn the adjusting bolt counterclockwise, one turn at a time, allowing sometime
between turns for the valve to respond. Continue until required pressure is reached.
8. When required pressure is reached, prevent the adjusting bolt from turning, and turn the locking nut clockwise
until it touches the pilot bonnet. Tighten the nut carefully.