AS DH -N2 Series, Operating Instructions Manual

Page: 10 / 44

EN
AS Strömungstechnik GmbH
www.asstroemungstechnik.de
Version date: 09/2020
10
The fill head is generally equipped with:
•
Liquid line connection to inlet of fluid
pump line connection
• Vent line connection
• Code disk
• Tightening nut with red anti-rotation
clip
• Standard connection to mating dip
tube
Depending on the option, the fluid flow rate
in the liquid channel can be controlled by
a check valve, a plug valve (turncock) or a
ball valve.
The check valve ensures that there is no
flow back after transfer is complete and
there is no spill at disconnection. As soon
as the pump is activated, the check valve
opens. When the pump is switched off, the
pressure in the filling line is reduced and
the check valve closes.
The optional limit switch ensures that the
fill head is correctly mounted. The filling
process can only be started after the re-
lease signal from the limit switch.
» The incorporation of the limit switch
requires professional installation to
integrate the signals into the system
control (PLC) to properly operate.
To fill flammable or highly flammable
chemicals into a container, there is an
electrically conductive version of the fill
head and the dip tube.
» The MOC of electrically conductive
plastic fill heads and dip tubes is al-
ways black in color due to the carbon
additive.
WARNING
Danger due to static charge.
Statically charged chemicals or fill
heads, dip tubes, etc. can cause sparks
to arc creating an ignition source.
• Ground the dip tube and fill head
properly.
Setup/function