Neptune NXP-M Operating Instructions Manual page 20

Stepper motor-driven diaphragm dosing pump NXP-M and NXP-P
8.4.1.2 Size 6/12
a
b
c
d
Fig. 14: Hose clip 6/12 (internal and external diameter in mm)
Size 6/12 hose clips only have a union nut. It clamps the hose onto the
grommet of the connection piece and at the same time fastens on the
dosing pump's valve.
Perform the following working steps:
1. Cut the hose (1) to the appropriate length neatly and at an exact right
angle.
2. Place a gasket that is suitable for the dosing medium between the
connection (4) and the valve.
3. Push the union nut (2) and the cutting ring (3) over the hose. Press
the end of the hose onto the grommet of connection piece. You can do
this more easily by moistening the end of the hose on the inside or
applying some lubricant to the grommet in the cone area. You should
push at least two thirds of the hose onto the grommet of the
connection piece.
4. Push the cutting ring over the hose into the cone area on the
grommet of connection piece.
5. Screw the union nut onto the valve of the dosing pump.
ü
Hose clip connected.
Hydraulic installations
20
Hydraulic connections
8.4.2 Making the glue-in connection
a
b
Fig. 15: Glue-in connection
Perform the following working steps:
1. Cut the PVC tube to length.
2. Push the union nut (1) onto the tube.
3. Stick the bonded coupling sleeve (2) to the tube (follow the
instructions of the adhesive manufacturer).
4. Screw the union nut onto the valve of the dosing pump. Use a gasket
that is suitable for the dosing medium.
ü Glue-in connection made.
8.4.3 Making the cemented connection
a
b
Fig. 16: Cemented connection
Perform the following working steps:
1. Cut the tube to length.
2. Cut the thread (2) onto the end of the tube.
3. Push the union nut (1) onto the tube.
4. Seal the thread. When choosing your sealing material, take into
account its resistance to material, temperature and pressure.
5. Screw the union nut onto the valve of the dosing pump. Use a gasket
that is suitable for the dosing medium.
ü Cemented connection made.
i Under normal conditions, you only need to screw the hydraulic
connections finger-tight. However, due to the material settling,
the pre-tension of the screw connection can slacken. This
means that you must re-tighten the screw connection before
carrying out commissioning.
Operating instructions