Installation and Wiring
NOTE
The oval rotors may be damaged if particles with
diameter > 75 µm go into the fitting.
▶ Install a strainer of 75 µm upstream and as close as possible
to the device.
→
Install a by-pass line on your installation to service the device
and the strainer without stopping the process (see Fig. 3).
8071
Fig. 3
Installation of a by-pass line
→
Install the device onto the pipe so that the shafts of the rotors
are in a horizontal plane.
Seal the external threads of the fitting with a product
compatible with the materials from which the device
housing and the pipe are made.
→
Screw the device onto the pipe.
Type 8071
filter
valve
direction of flow
7.3
Wiring
DANGER
Risk of injury due to electrical voltage.
▶ Shut down and isolate the electrical power source before
carrying out work on the system.
▶ Observe all applicable accident protection and safety regula-
tions for electrical equipment.
• Use a high quality electrical power supply (filtered and
regulated).
• Make sure the installation is equipotential.
Red wire
Black wire
White wire
Yellow wire
Green wire
Table 1: Connection wire assignment
English
Power supply (+)
Power supply (–)
NPN transistor output
Reed switch
Reed switch
15