ITRON RB 1700 Instalación Y Puesta En Marcha página 7

Pressure Regulator Setting
The pressure regulator is usually delivered
already set to the specifications indicated
in the order sheet
Whenever the set pressure must be mod-
ified, this value must be set within the set-
ting range Wds of the spring installed
Make sure there is a flow demand or open
the vent valve downstream of the regula-
tor The vent valve should be closed after
the desired set pressure is obtained
• To increase the set pressure: rotate the
adjustment screw (a) clockwise - see
Fig 2
Relatching the SSV -
The safety shut-off valve must be re-latch
only after verifying the reasons for the
SSV to trip and after having re-establish
normal operating conditions
Before re-latching the safety slam-shut
valve, make sure that the downstream
valve is closed
• a - unscrew cover (bb) to remove it;
• b - screw it upside down on the stem
(aa) until it comes into contact with the
controller top casing; continue to screw
it slowly, this causes the valve to open
gently and the pressure to fill the down-
stream pipe
On RB 1800 / RB 1800F - this causes
the internal by-pass to open When the
outlet pressure has stabilized,
• c - pull the stem and cover outwards to
• d - unscrew the cover and replace it in
Setting the SSV
The safety slam-shut valve is usually deliv-
ered already set to the specifications indi-
cated in the order sheet
Whenever the set value of the trip pres-
sure pdso for over-pressure (and/or pdsu
see Fig 3
for under-pressure must be modified, this
value must be set within the set range
Wdso (and/or Wdsu) of the spring in-
stalled
Do not modify the set value when the SSV
controller is not under pressure
• To increase the set value: rotate clock-
re-latch the trip mechanism The stem
shall remain in ãopen" position;
operation position on the controller top
casing
wise the adjustment screw (b) for upper
trip pressure or the adjustment screw (c)
for lower trip pressure - see Fig 2.
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