My booster pump switches on and/or switches off too quickly

Booster pumps operate by means of a mechanical or electronic pressure switch, that measures the current water pipe pressure, enabling the pump to switch on or switch off automatically. If a pressure switch is not set correctly or too sensitively, the pump may not perform optimally. This blog is meant to help solve that particular problem.

Please refer to the next article if your booster pump does not switch off or continues pulsating (on/off, on/off).

My booster pump switches off too quickly

If you think your booster pump switches off too quickly, it means that the switch-off pressure has been set too low. The problem can be solved by increasing the pressure.

My booster pump switches on too quickly

If you think your booster pump switches on too quickly, it means that the switch-on pressure has been set too high. The problem can be solved by decreasing the pressure.

Mechanical pressure switch (booster pump with a pressure vessel)

This refers to the following product series: DAB Aquajet / Aquajet-Inox, Tallas D-BOOST, EL BOOSTER

Before starting, please note that a mechanical pressure switch cannot be reset to default factory settings. You are responsible for the correct configuration, and we cannot assist you in this respect.

Please take into account the following aspects:

  • As a standard, the pressure switch is set to switch-on pressure: 2 bar, switch-off pressure: 3 bar;
  • The maximum pressure can be calculated by dividing the delivery head value by 10. This value is indicated on your pump.

Please follow the next steps:

  • Disconnect the pump from the power supply;
  • Remove the lid from the pressure switch;
  • The screw in the large spring controls both the switch-on pressure and the switch-off pressure: turn it to the right to increase both pressure settings, and to the left to decrease them;
  • The screw in the small spring only controls the switch-off pressure: turn it to the right to increase the pressure setting, and to the left to decrease it;
  • Replace the lid.

Electronic pressure switch

The 'electronic pressure switch' category can be subdivided into the following product groups:

DAB Control-D or assembled pump sets with DAB Control-D

This system's switch-on and switch-off pressure cannot be adapted. If you think the pump switches off too quickly, you may choose to place a pressure-reducing valve between the pipes.

DAB Active Driver Plus or assembled pump sets with DAB Active Driver Plus

These systems are fully adjustable. Please refer to the manual.

DAB Easybox

These systems are fully adjustable. Please refer to the manual.

DAB Easybox Mini

These systems are fully adjustable. Please refer to the manual.

Tallas D-EBOOST

Please refer to the manual.

Tallas D-ECONCEPT

These systems are fully adjustable. Please refer to the manual.

Electric Control System (T.I.P. BRIO 2000 M) or assembled pump sets with the Electric Control System

This system's switch-on pressure can be adapted. Please refer to the manual.

If you think the pump switches off too quickly, you may choose to place a pressure-reducing valve between the pipes.