Diaphragm liquid pump NF 30, NFB 30
Servicing
KNF Flodos AG BA_NF30_EN_05_069206.docx
Translated from the Original Operating and Installation Instructions
24
8.4. Adjusting the overflow
1. Test set-up/instrumentation as shown in the diagram.
Test set-up for overflow
Fig. 21: Test set-up for overflow
2. Switch on the pump and run until there are no air bubbles in
the system.
3. Close the valve downstream of the pressure gauge and check
the overflow pressure at the gauge.
4. Undo the hexagon nut.27 (
9
).
5. To reduce the pressure, turn the setscrew.27 (
8
) anti-
clockwise, to increase the pressure, turn it clockwise.
6. Using the hexagon nut.27 (
9
) fix the setscrew.27 (
8
) in the
required position.
Make sure that the container (a),
pump (b),
pressure gauge (c) and valve (d)
are as
level as possible (+/- 15 cm)
