Prior to operation, with the tank, empty of water, the pressure should be 2psi below the cut-on pressure. So, for example, with a 30-50 pressure switch (factory default setting), air pressure in the tank will equal 28psi. If the pressure switch is adjusted to 40-60, the cut-on pressure will be 38psi. Furthermore, always set the pressure switch to reflect a 20psi differential between cut-on and cut-off. If the pump cycles too quickly causing the pump to cut on and off, setting the pressure switch to a higher on/off setting should slow down the cycling.
Remember to adjust the air pressure in the tank to reflect the new cut -on pressure. Warning! Most non-commercial tanks have a pressure rating of 100psi!. For more info contact pressure vessel suppliers in uae or call us +971 4 252 2966