What to do if there is air in the tank of the pumping station

Hello! We change the tank at the pumping station, and there is air. What should we do?

Irina

Expert Answer

Irina, air is pumped into the accumulator tank in order to prevent the pump from turning on frequently. If its pressure is equal to atmospheric, then the unit will turn on each time the valve is opened and turn off when it is closed, while the tank will be full. By the way, this symptom just indicates a lack of pressure in the air part of the vessel.

For the system to work correctly, the air pressure in the accumulator must be 10% less than the minimum working pressure for which the pump automatic relay is configured. So, if the pump starts to work when the pressure drops to 2 atm, then the tank is pumped up to 1.8 atm, etc., using a compressor or a mechanical pump with a pressure gauge. To do this, in the bottom of the accumulator (opposite from the flange for horizontal structures), they turn off the decorative plastic plug and gain access to the valve. We remind you that it is impossible to pump air into the tank in a closed system - this work is carried out either on a dismantled tank, or with open flow valves.