While I am not in the industry I've spent about 45 years in industrial maintenance, repair, design and fabrication and am well versed in hydraulics and industrial electrical and controls. A friend recently bought a building with a Rotary Hydraulic 3 story freight elevator. No info on it other than very old and uses all 230v controls and has a gear pump direct driven by a 5 hp motor underneath a large open top tank. Itrecently wouldn't go up (pump runs) and coils are working. We removed the valve assembly (couldn't do much under tank) and when we removed the solenoid valves found a small brass screen floating around in the port. I am guessing it got under the tip of the valve and didn't allow it to close causing a bypass?
Now that I've told my life story I was hoping someone might have some info or literature on the valve package. It is stamped P-56-BR-1761. I would appreciate any help.
Thanks
Brett Baker
