IOM
R-20 RM
11
3. OPERATION INSTRUCTIONS
1.
To manually open the valve, turn the manual
3
-way selector [
3
] to its "OPEN" position.
Please note:
By doing so you will have no control over the downstream pressure; it is possible that your system will be
exposed to excessive pressure.
2.
To manually close the valve, turn the manual
3
-way selector [
3
] to its “CLOSE” position.
3.
To maintain downstream preset pressure, turn the
3
-way selector [
3
] to its “AUTO” position.
•
To increase the downstream pressure, turn the adjusting bolt (
4
A) 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.
•
To decrease the downstream pressure, turn the adjusting bolt (
4
A) 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.
•
When the required flowrate is reached, prevent the adjusting bolt (
4
A) from turning, and turn the
locking nut (
4B
) clockwise until it touches the pilot bonnet. Tighten the nut carefully.