LGX pump stopped working after 9 years

[danny1553]

I got my drain system removed. It was a bit painful but I came prepared by taking painkillers 1 hrs before the appointment.
Dr. Kansas explained me the reason for my LGX failure. LGX cylinders have 2 walls, it is like one tube within another. Normally, the fluid goes into the inner tube, and from there retreats back to the reservoir. Outer tube is for sizing only.
What happened was that the inner tube got broken and the liquid entered the outer cylinder from where there is no escape as it is not connected to the fluid pipe.
If I am not mistaken, CX does not have the dual wall cylinder design.