AS MH2-D Series, Руководство по эксплуатации

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EN
AS Strömungstechnik GmbH
www.asstroemungstechnik.de
Version date: 09/2020
14
5 Assembly/commissioning
In the containers onto which the dispense
heads are mounted, there is already the
dip tube on which the dispense head is
mounted. The dip tube is possibly key-cod-
ed according to the liquid in the container
and is tightly closed by means of the clo-
sure. Depending on the closure, it can also
be closed with a tamper-proof cap. For the
assembly described below, it is assumed
that the closure is secured with a tam-
per-proof cap.
5.1 Initial commissioning
1. Make sure that the entire system is in
a clean environment.
NOTE
Contamination and debris 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 suction line to the liquid
connection of the dispense head. The
following must be observed here:
•
The suction line must be connect-
ed free of stress and load.
• 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.
Assembly/commissioning
• The screw connections must be
secured against unwinding.
When using flare connections,
see also AS flare and assembly
instructions.
• If the suction line is installed hor-
izontally, it should be supported
approx. 50 cm away from the
dispense head.
• The vibrations of the fluid pump
must not be transmitted to the dis-
pense head via the suction line.
• The suction line should be as
short as possible. This results in
better suction performance.