Connect the inlet

Note the following when connecting the inlet:

  • Connect the inlet within the marked areas. If the inlet is outside the marked areas, the following problems can occur:
    • The connection leaks.
    • Statics of the pump chamber are affected.
    • Backflow into the inlet pipe.
  • Avoid an inlet surge and air intake into the pump chamber. Lay the inlet properly.
  • CAUTION! Inlet surges or air intake into the pump chamber can cause the level control device to malfunction!
  • Lay the inlet pipe with a slope to the pump chamber so that it can drain automatically.
  • All connections must be completely tight!
  • Install gate valve in the inlet!
Labelling on the pump chamber
Labelling on the pump chamber
Inlet areas
Inlet areas

1

Tank wall

2

Hole saw for drill

3

Inlet seal

4

Inlet pipe

5

Pipe clamp

  1. Pump chamber installed properly.
  2. Inlet pipe installed properly up to the pump chamber and according to consulting documents.
  3. Installation materials provided:
    1x hole saw
    1x drill
    1x inlet seal
    1x pipe clamp
  1. Mark the inlet point on the pump chamber.
  2. Use the supplied hole saw to cut the hole for the inlet into the pump chamber wall.
    When drilling holes on the pump chamber, observe the following points:
    - Observe the dimensions of the inlet surfaces. CAUTION! The drilled hole must be completely within the marked inlet surfaces!
    - Max. speed of the drill: 200 rpm.
    - Check the hole diameter: DN 100 = 124 mm (5 in). NOTICE! Drill the connection carefully. Impermeability of the connection depends on the quality of the drilled hole!
    - Make sure the excess material in the drill bit is removed completely! If the excess material removal rate decreases, the material will heat up too quickly and melt.
  3. Stop the drilling process, allow the material to cool down and clean the hole saw!
  4. Reduce the speed of the drill.
  5. Vary the feed pressure when drilling.
  6. Deburr and smooth the cut surface.
  7. Insert the inlet seal into the hole.
  8. Push the pipe clamp onto the inlet seal.
  9. Coat the inner surface of the inlet seal with lubricant.
  10. Push the inlet pipe into the inlet seal.
    Push the inlet pipe 50 mm (2 in) into the pump chamber.
  11. Connect the inlet seal and pipe firmly to the pipe clamp. Tightening torque: 5 Nm (3.7 ft·lb).
  1. Inlet connected.
  2. Next step: Connect the vent.
Connecting the inlet
Connecting the inlet