Excavating the pit

  1. Preparation work for installation is done.
  1. Obey local regulations to excavate the pit, keep these points in mind:
  2. Pump chamber height
  3. Inlet pipe depth
  4. Height of connection port DN/OD 150 or DN/OD 200
  5. Location of the connections
  6. Underlay thickness
  7. Levelling layer thickness
  8. Max. height adjustment of the cover
  9. Pump chamber extension height at max. 500 mm
  10. Make sure that the pit diameter on the ground is 2 m larger than the pump chamber diameter.
  11. Obey the applicable regulations for earthworks in underground engineering and road building (slope angle, installation). If necessary because of the ground water level, prevent damage of the pit using a ground water drawdown.
  12. Install the load-bearing underlay correctly and seal it.
  13. Add a levelling layer and level off.
  14. Prepare the piping provided by the customer.