Table of Contents
Advertisement
Direct electrical connection to the electric motor
If a star/delta switch is not used, the electric motor must be connected as shown below. See the
electric motor's nameplate for more information.
Figure 4 Star or delta connection
Electrical connection of pressure switch on the discharge side (OPTIONAL)
The pressure switch is supplied with approximately one metre of 3-core cord. An example of a
pressure switch is illustrated in figure 6. When the measured pressure is below the desired pressure,
the red and brown cores make contact. Once the pressure exceeds the switching pressure of the
pressure switch, the brown and blue cores are connected by the pressure switch. Several different
pressure switches are available. Figure 7 shows an example of a pressure switch for the low-pressure
side.
brown
red
Figure 5 Pressure switch circuit diagram,
no pressure situation
It is recommended installing this in a failsafe way so that there is a constant connection
when there are no problems. If a wire breaks, an alarm is given.
IBAN NL71 RABO 0340341610 · KvK Den Haag 27230471 · Btw-nummer NL8000.78.378.B01 · info@vanderendegroep.nl · www.vanderendegroep.nl
Star connection
blue
Figure 6 Pressure switch,
high pressure
Pagina 20 van 21
Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Telefoon 0174 515050
Delta connection
Figure 7 Pressure switch, low
pressure
Advertisement
Table of Contents
