English (GB)
15
5.2 Checks before commissioning
Check tightness of the total plant before start-up.
– Observe manual of the gas dosing regulators!
5.2.1 Checking the tightness of pressure gas lines
Pressure gas lines are all lines from the gas containers to the
vacuum regulator.
• If the plant is equipped with a nitrogen rinsing device: Check
tightness roughly with nitrogen
• Detailed checking: with ammonia
5.2.2 Checking the tightness with nitrogen
• Close all container valves
• Open container connection valves and all shut-off valves up to
the gas dosing system
• Open the connection valve of the nitrogen cylinder
• Slowly open the valve of the nitrogen cylinder, until the lines
have a pressure of about 10 bar (read at the manometer of the
vacuum regulator).
• Apply leakage spray or soap water to all components under
pressure
– Formation of bubbles and/or pressure drop at manometer
-->
Leakage in pressure lines!
• Depressurize the plant!
• Eliminate leakage!
• Check tightness again!
– No formation of bubbles, pressure at manometer does not
drop significantly within one hour
-->
Pressure lines are tight.
5.2.3 Checking the tightness with ammonia
• Open all container valves and container connection valves and
quickly close them again
• Slowly pass the open ammonia bottle along pressure-gas
leading parts
– Formation of white mist:
Leakage in pressure lines!
• Depressurize the plant!
• Eliminate leakage!
• Check tightness again!
Fig. 19
Formation of white mist: Leakage in pressure lines!
– No formation of white mist: Pressure lines are tight.
Fig. 20
Pressure lines are tight
Fig. 21
Liquid ammonia makes leakages by corrosion
6. Operation
6.1 Function
• Reducing the gas pressure (overpressure) to subatmospheric
pressure (vacuum)
• In case of too high pressure in the device (e. g. if the inlet
valve is soiled or damaged) the overpressure valve opens.
– Gas will be lead to the absorption vessel.
• In case of the gas container getting empty or blocked gas
supply (too high vacuum in the device) the vacuum regulator
closes.
– Gas containers will not be evacuated with the injector
vacuum.
6.2 Display Elements
• Manometer
– displays the gas pressure at the inlet (admission pressure)
6.3 Operating
– Observe manuals of the other components.
Warning
Check the tightness not until the total plant is ready
for start-up.
Danger of gas leakage!
Warning
Before checking the tightness:
Start running the optional built-in liquid trap or the
seperate liquid trap!
Danger of gas leakage!
Warning
Maximum nitrogen pressure 16 bar!
Danger of damages and gas leakage when being
exceeded!
TM
0
4
0
849
0
908
TM
04 069
7 090
8
Warning
Liquid ammonia must not come in contact with parts
of the plant!
Danger of leakages by corrosion!
T
M
04
0
6
98
09
08
Warning
Do not exceed the max. admission pressure!
Danger of gas break-out!
Note
The device is passive. All adjustment has to be made
at other parts of gas dosing plant!
