24
Installation
• Check that the maximum inlet pressure is not
higher than the design pressure of the regula-
tor.
• 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 dam-
aged.
• The inlet and outlet chambers of the pressure
regulator must be perfectly clean.
• Make sure that the direction of gas flow corre-
sponds to the arrow on the pressure regulator
body.
Installation position
• For ease of operation, we recommend perform-
ing 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 (ap-
prox. 5D).
• Connection: G
1
/
2
“/EO 12 (Regulator)
• Connection: G
1
/
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 prop-
erly, 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 down-
stream pressure should stop at the closing
pressure (see also page 29 to 32);
• (5) Open the downstream valves slowly to con-
trol 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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