Vent the pressure tank approximately every 1 year (check the back pressure) with an air compressor.
Venting saves the service life of both the pressure switch and the pump, as well as the durability of the diaphragm.
1. Turn off the pump, using the motor protection switch or pressure switch.
2. Open a COLD water tap as close as possible, e.g. a kitchen tap, and let the water drain out of the pipes, which will be approximately 10-30 liters.
After this, LEAVE the cold water tap OPEN – for the entire procedure.
3. Connect the compressor valve gun to the pressure tank valve. If the gun gauge shows that there is air in the diaphragm, add air so that
the air pressure in the pressure tank is 1.8 – 2 bar.
If the gun’s gauge shows 0, then apply air with the compressor at the same time until the air has time to ‘push’ water out of the tank
through the opened water tap. When the water flow has completely stopped, apply a back pressure of 1.8 – 2 bar with the compressor (however, the pressure is set 0.2 bar less than
the pump’s starting pressure).
When adding air, only the air compressor gauge is monitored, not the pressure tank gauge (this indicates the network pressure).
4. Start the pump.
5. Close the tap when the water comes out evenly.
The filters of the water taps may become clogged, in which case the filters of the taps must be opened and cleaned, the filter opens clockwise and is so-called hand-tight.
When venting the pressure tank, it is important that the water tap is open so that there is no back pressure from the pipes and thus the venting fails.
If a long time has passed since the pressure tank was vented-> when adding air, if water comes from the tap, you must apply pressure to the pressure tank until
the water flow stops, the water makes room for the air, only after this can air be added around the rubber bag, i.e. back pressure.
Finally: venting the pressure tank is important for a reason, because not doing so will wear out the pressure switch tips and their wear will cause no water to come out. In this case, for example,
the motor protection switch will trip to prevent the pump from breaking down and in the worst case, all electrical components will have to be replaced.