EN
AS Strömungstechnik GmbH
www.asstroemungstechnik.de
Version date: 09/2020
26
3. Connect the ventilation line to the vent
port of the fill head.
CAUTION
Danger due to leaks!
Exceeding the maximum permissible
pressure can lead to leakage.
• Take suitable protective measures
against exceeding the maximum per-
missible pressure. Please also note
the specifications of the container
manufacturer.
»
The vent port is used only to connect
a ventilation line. Never use it as a
return flow for liquids.
»
With fill heads, the vent port is used to
relief pressure build up inside the con-
tainer while filling.
4. Check whether the container can be
inerted with nitrogen before the filling
process.
»
In the case of fill heads with a second
gas connection, nitrogen can be
introduced through this second con-
nection. The excess nitrogen in the
container escapes through the vent
connection.
If inerting is carried out in combination
with a long dip tube in empty contai-
ners, the nitrogen cushion builds up
from the bottom in the container.
»
In recirculation applications, in which
a dispense head and a fill head are
attached to the container, the standard
ventilation connections can be used to
inert the container with nitrogen before
operation.
Assembly/commissioning
5. Mount the fill head on a empty contai-
ner or for recirculation applications in
combination with a dispense head on
a container filled with ultra pure water.
For assembly, see the section „Moun-
ting the fill head“.
6. Perform a test run with ultra pure wa-
ter and check the following points:
•
Tightness of the connections and
interfaces,
•
Closing behavior of the valves;
the valves (check valve, plug
valve (turncock) or ball valve)
must seal completely,
•
Ventilation of the container at
maximum flow rate.
If no pressure range is available/
measurable, visually check that
the flow rate is constant and that
the container does not inflate or
collapse.
»
A fill head with a manual shut-off valve
can be used for pressureless filling.
CAUTION
Danger due to leaks!
Exceeding the maximum flow rate can
lead to leakage.
• Take suitable protective measures
against exceeding the maximum flow
rate.
Summary of Contents for DH -N2 Series
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