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Start-Up Instructions - DRESSER 133 Bedieningsvoorschrift

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  • NL

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  • DUTCH, pagina 27
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 pip-
ing, the following must be checked:
• The upstream and downstream flanges must be
parallel so as to install the regulator without un-
due 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
• The installation position is freely selectable .
Sensing line
• The sensing line isn't necessary of internal pulse
(< 4 . 0 bar)
• For external pulse (> 4,0 bar), 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 133 G
• Breathing connection 233/ 243/ 244: G 1"
• To realize fast load changes of the regulator, the
following cross section of breathing line is to ob-
serve:
• 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:
• Check that the upstream- and downstream
valves are closed;
• Open the upstream valve slowly;
• Reset the shut-off valve (see also page 15);
• Check that the downstream pressure is rising
slowly on the downstream side manometer, the
downstream pressure should stop at the closing
pressure;
• Open the downstream valves slowly to control
the even flow .
Regulator- and SSV-set point
• The regulator is delivered according to the speci-
fications, 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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