Hello everyone, I have this hydropneumatic (50 liters capacity tank. 20/40 pressure switch, 0.5 hp pump) which worked excellent but the hydropneumatic pump burned and I bought another 0.5 hp capacity but now this new pump only lifts up to 20 psi and There it does not happen despite continuing to function, and check with a disconnected tank that has 18 psi, the lung is ok. The pressure switch was checked and it's ok. leaks have already been sought and the pressure switch has 3 months of use, at 20 cms. The pump water outlet has a stopcock, I closed it and continues doing the same. Thanks I hope you can help me.