5
UK
5.1 Definition of requested value
► Loosen the lock nut.
► Turn the knurl until the requested value just becomes visible on the setting
scale. → Example in figure 2: requested value = 10 l/min.
► Tighten the lock nut.
5.2 Adjustment to existing flow
► Let the normal flow circulate in the installation.
► Loosen the lock nut.
► Set the switch point with the knurl.
-If the LED lights before setting: turn the knurl in the direction [+] until the LED
goes out. Then turn in the opposite direction [-] until the LED lights.
-If the LED does not light before setting: turn the knurl in the direction [-] until
the LED lights.
► Tighten the lock nut.
Correlation between number of the turns of the knurl (SET) and switch point in l/
min (typical course of the measurement curves):
SET
SBU325
SBU324
SBU323
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0
10
20
30
40
50
Q [l/min]
60
70
80
90
100
The diagram shows the typical course of the measurement curves for coolants at 20 °C.
