I have an error of pressure failure every time a method runs. For rinse procedures, te pressure increases to set point and then decreases slowly until 9.9 psi. Vacuum works well and pressure is mantained only at pressures equal or below 9.9. In other post, it was suggested that pump manifold could be clogged. Could anyone give me an advise? I have all the pump system spare parts, so I could replace any item.

Thanks in advance.