AS DH -N2 Series, Operating Instructions Manual

Page: 25 / 44

EN
AS Strömungstechnik GmbH
www.asstroemungstechnik.de
Version date: 09/2020
25
5 Assembly/commissioning
In the containers onto which the fill heads
are mounted, there is already the dip tube
on which the fill head is mounted. The dip
tube is key-coded according to the liquid in
the container or with the universal code 20
for recirculation apllications and is tightly
closed by means of the closure. Depending
on the closure, it can also be closed with
a tamper-proof cap. For the assembly de-
scribed below, it is assumed that the clo-
sure is secured with a tamper-proof cap.
5.1 Initial commissioning
1. Make sure that the entire system is in
a clean environment.
NOTE
Contamination and build-up can restrict
the functionality of the entire system and
lead to premature wear of o-rings and
seals and thus to leaks. Dust deposits
must be avoided in EX areas in par-
ticular, as there is an increased risk of
ignition.
2. Connect the fill line to the liquid con-
nection of the fill head. The following
must be observed here:
•
The fill line must be connected
free of stress and load.
Assembly/commissioning
• The connecting couplings must
not be tightened too tight or too
loose. Both can lead to leaks.
Please use recommended torque
specifications of the respective
manufacturer when tightening
nuts and screws.
• The screw connections must be
secured against unwinding.
When using flare connections,
see also AS flare and assembly
instructions.
• If the fill line is installed hori-
zontally, it should be supported
approx. 50 cm away from the fill
head.
• The vibrations of the fluid pump
must not be transmitted to the fill
head via the fill line.
• The vertical liquid column above
the fill head should be as small as
possible.