20/24
EN
PREPARATION
Use only cylinder connections appropriate for the type of gases used according to DIN 477.
CONNECTION TO THE CYLINDER
Fig. 9: Tighting the union nut with a spanner
1.
First screw the union nut onto the cylinder by hand. Pay
attention to right- and left-handed threads! Align the
regulator. Do not tilt it when setting it on!
2.
Tighten the union joint with the appropriate open-end
spanner. Do not use spanner extensions!
INSTALLATION OF OUTLET TUBES
Tubes are usually assembled with tube fittings. Assembly
starts inserting the tube completely into the fitting. Then screw
the union nut by hand and tighten the nut with a spanner
(1 1/4 turns). Please take care to follow the manufacturers
instructions and the compatibility of gas type/pressure with
materials.
EXTERNAL GAS PURGING FMD 500/502-21
Use corrosive, flammable or oxidizing gases and f. e. the
cylinder pressure regulator FMD 500/502-21, you have to
purge the unit with external gas before installation, startup
end ending operation.
Cylinder pressure regulators with external gas purging make it possible to: dry the fitting and/or
remove damp atmospheric air which may have entered the station before start-up or when changing
cylinders, purge out toxic, corrosive or pyrophoric gases from the fitting before changing cylinders
and before ending operation.
Dry purging gas N2 or Ar 5.0 of 4 - 10 bar is required for successful purging..
1.
Check that purging lines (7) and exhaust lines (5) are connected correctly.
2.
Close all valves of the fitting (handle at right angles to pipe).
3.
Turn the handwheel of the pressure regulator (2) as far as possible anticlockwise - through passage is
thus closed.
4.
Open the purge gas inlet valve (7).
5.
Open the pressure regulator (2) partially by turning the handwheel approx. two revolutions clockwise.
6.
Close the purge gas inlet valve (7). Allow the purging gas which has now flowed into the pressure
regulator to remain there for a few seconds.
7.
Open the process gas outlet valve (5) briefly and allow the purging gas to escape. Then close the process
gas outlet valve (5) again immediately.
8.
Repeat steps 4., 6. and 7. between five and seven times.
9.
Close all valves of the station. Close the pressure regulator (2) completely by turning the handwheel
anticlockwise.
6.2 LINE AND SUPPLY PRESSURE REGULATORS
PREPARATION
Release the gas pressure, purge if necessary with inert gas (see VBG 50). Then open the pipelines with
special tools, avoiding turnings. Make sure the lines and connection pieces are in clean, impeccable
condition.
CONNECTION
Line and supply pressure regulators are usually delivered with tube fittings. Installation requires complete
insertion of the pipeline into the connection. Then screw on the union nut by hand and tighten it (1 1/4 turns)
with an open-end spanner.
START-UP
When connecting or changing cylinders containing toxic or corrosive gases, appropriate personal
protection measures must be taken (respiratory protection, eye protection and protective clothing).
Observe the MAK values (maximum workplace concentration value; see Technical norms for
dangerous substances, TGRS 900) and have the correct respiratory protection filters at hand.
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7.
Содержание druva LINE 200
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