4 Flow Switch Installation
Flow switch
4.1.3 Flow switch with pipe section
⇒
Install the flow switch pipe section just like a valve in the existing pipe.
⇒
Sealing of the brass or stainless steel pipe sections has to be carried out with either
thread sealants (Teflon tape, surface coating, etc.) or via sealing rings on the face of the tube section.
⇒
Flow switches optionally equipped with a copper tube section (Fig. 5) have to be soldered to the pipe. The
flow switch (upper part) and the O ring have to be disassembled from the tube section when soldering to
prevent overheating.
⇒
With version ...MKU seal the PVC tube section (Fig. 6) in the pipe using suitable adhesive joints.
Fig. 5
Fig. 6
4.2 Electrical connection
4.2.1 General electrical connection information
⇒
Caution:
Danger of death due to high voltages!
Always de-energize the system before connecting the wires of the mains cable.
⇒
CAUTION:
Ensure that the maximum electrical contact load specified on the type plate is never
exceeded; otherwise the reed contact integrated in the switching unit will be damaged.
The switching capacity is reduced with inductive loads. Details on the protective circuit can be requested
from the manufacturer.
Additional information for flow switch version VH...X
⇒
The flow switch version VH...X can be connected as a simple electrical device to a certified intrinsically
safe circuit.
⇒
The flow switch version VH...X is equipped with either an elbow plug connector EN 175301-803-A or a
permanent connecting cable.
⇒
To prevent electrostatic charging the devices have to be connected to the equipotential bonding via the
elbow plug connector or the fixed connecting cable.
Page 8 of 15
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