ITRON RB 4000 Instruction Manual page 8

Resetting of the shut-off valve with lever reset (Type SSV 8600)
» Close the downstream stop valve
» Slowly operate the resetting lever 27 clockwise until the internal
by-pass is open 26. This leads to filling the downstream area
12 and the control chamber 19.
» When the pressure indicated on the manometer installed in the
downstream pipe is stabilized, continue to move the lever 27
in order to permit the connection of the lever system 24; at this
point the lever will remain stable on the opening position.
27
Shut-off Valve Adjustment
The shut-off valve is usually supplied with preset values
according the order. Should be necessary to modify the
calibration value, it must be considered that the modification
can be effected only within the specific set range of the spring
installed, otherwise it is necessary to substitute with a suitable
spring to be selected referring to the provided tables.
8
After these operations, the shut-off valve is into operation and it is
possible to proceed slowly with the opening of the downstream
valve
26
When the installed spring is appropriate to obtain the required
pressure, proceed as follows:
» Over pressure shut-off operation
Rotate in a clockwise direction the external screwing ring 21,
increases the set point value, or in a anticlockwise direction to
reduce it.
» Low pressure shut-off operation
Rotate in a clockwise direction the central screwing ring to
increase the set point value or in an anticlockwise direction to
reduce it.
19
24
21 22