INSTALLATION
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5
5.2.2.2
Installation of flow switch
As stated on page 40, Vacon recommends the installation of flow supervision in the liquid cooling system. If
requested, Vacon delivers the flow switch as option. The specification of the flow switch as well as notes as
concerns its installation are given below.
About the installation:
Vacon recommends to mount the flow switch on the inflow side of the system (see Figure 5-18). Pay atten-
tion to the direction of flow. The switch reaches the highest accuracy when it is mounted in horizontal posi-
tion. If mounted vertically, the mechanical sensor is affected by the Earth’s gravity which reduces the accu-
racy according to the data given in Table 5-11.
Figure 5-25. Flow switch: Hose connection, fast connector (electrical), fast connector lock screw, cable seal and
clamp
Hose connection
G1/2” female, internal thread ISO228-1
Closing
The switch closes if the flow exceeds 20 l/min.
Switching accuracy:
Horizontal installation
Vertical installation
–
5…+15% (19…23 l/min)
±
5% (19…21 l/min)
Table 5-11. Flow switch data