VH500
Commissioning
Technical changes reserved
- 23 -
Close the cover
IMPORTANT
When closing the cover, the leads of the connection cable and the gasket can be
damaged.
Make sure that the leads are not trapped.
Pay attention to the correct seating of the gasket.
Fit the cover with the gasket on the upper housing part.
Insert the screws in the cover of the housing.
Tighten the screws.
Pay attention to the maximum torque of 2.5 Nm!
5 Commissioning
Commissioning
Before switching on for the first time, check that
the VH500 has been installed correctly and that all screw connections are sealed.
the electrical wiring has been connected properly.
the measuring system is vented by flushing.
Contact type
The flow switch VH500 has a changeover contact. Depending on the wiring (
p. 22), it can
be operated as normally open contact or as normally closed contact.
Depending on the wiring and flow, the micro switch operates according to the following table:
Contact
Flow
Electric contact
Normally open contact
(open without flow)
Increasing
Closed
Decreasing
Open
Normally closed contact
(closed without flow)
Increasing
Open
Decreasing
Closed
