ITRON RR16 Mode D'emploi page 11

INSTALLATION
» Check that the maximum inlet pressure is not higher than the
design pressure of the regulator.
» Regulator should be lifted only with belts around the body.
» Arrange enough room for the serving of the regulator.
Before installing the pressure regulator in the piping, the
following must be checked:
» The upstream and downstream flanges must be parallel so as
to install the regulator without undue stress.
» The upstream piping must be cleaned from all impurities
(sand, welding slag, etc.)
» The pressure regulator must not be visibly damaged.
» The inlet and outlet chambers of the pressure regulator must
be perfectly clean.
» Make sure that the direction of gas flow corresponds to the
arrow on the pressure regulator body.
INSTALLATION POSITION
For ease of operation, we recommend performing installation
with the valve body in horizontal alignment, with actuator
upwards.
SENSING LINE
» The sensing line must be connected to a section reasonably
free from turbulences, preferably in a straight section of the
downstream piping (approx. 5D).
» Connection: G1/2"/EO 12 (Regulator)
» Connection: G1/4"/EO 6 (SSV)
» Recommended pipe:
Ermeto-pipe EO-12 / -6, Steel, zinc protected
BREATHING LINE
» Breathing connection G 1/2"
» To realize fast load changes of the regulator, the following
cross sections of breathing line are to observe:
• Up to 3 m breathing line, min. size DN 20
• Longer than 3 m breathing line, Size DN 25 or larger.
START UP- INSTRUCTIONS
» To start-up the regulator after installation properly, proceed as
follows:
» (1) Check that the upstream- and downstream valves are
closed;
» (2) If the regulator is fitted with the shut-off valve, the shut-off
valve must be closed;
» (3) Open the upstream valve;
» (4) Reset the shut-off valve slowly and check that the
downstream pressure is rising slowly on the downstream side
manometer. The downstream pressure should stop at the
closing pressure (see also page 29 to 32);
» (5) Open the downstream valves slowly to control the even
flow.
REGULATOR- AND SSV-SET POINT
» The regulator is delivered according to the specifications,
specified in the purchase order. If the adjusted outlet- / SSV
shut off- pressure is to be changed, proceed as follows:
• Increasing the outlet- / shut off pressure:
The adjusting screw is to turn clockwise;
• Decreasing the outlet- / shut off-pressure:
The adjusting screw is to turn anti-clockwise
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