Venting the valve
If air bubbles are present in the piping system during the measurement, the pipeline must be vented.
WARNING!
Risk of injury from uncontrolled release of media! If the threaded pin is opened too far, the media
will escape uncontrolled.
1. Using a hex screwdriver, loosen the threaded
pin 3 turns.
The air bubbles in the pipe system escape.
2. Tighten the threded pin, observing the correct
tightening torque for the threaded pin
Threaded pin for venting
Setting the switch point
The following instructions describe the procedure for a Normally Open Contact (NOC). The actual
state (open or closed), can be determined using a continuity meter.
1. Loosen the set screw of the switch contact
(1) using a hex screwdriver.
2. Slide the switch contact to the point that cor-
responds to the flow rate to be monitored.
Ensure that the positioning arrow on the
switch contact adhesive label is aligned with
the desired flow rate on the switch point ad-
justment scale.
3. Tighten the set screw of the switch contact,
using a hex screwdriver. When doing so, ob-
serve the correct tightening torque of the
screw.
The set switch point corresponds to the switch-off
point of the switch contact by decreasing flow.
DS09 Instruction manual 05/2018
page 13