Liquid Ring Vacuum System Troubleshooting Guide
system is:
WE SUGGEST YOU CHECK THIS:
A. You might have a clogged Y-strainer in either the makeup water line or supply water line. Y-Strainers are used to filter out particulates in the water lines and can be serviced by twisting off the cap, pulling the screen down from the housing, and cleaning the screen.
B. Your sealing water may be too hot. Keep in mind that the stated capacities of water sealed liquid ring vacuum pumps are dependent upon proper water temperature, usually around 60 degrees F. If your water temperature rises significantly above that, your pump's performance is likely to decrease, especially at deeper vacuum levels. If your system is equipped with a liquid to liquid heat exchanger, such as a plate and frame or shell and tube type, check it to make sure it is not clogged, preventing water flow through it. Depending on the type of heat exchanger you have, it could be cleaned or it may have to be replaced.
C. Your inlet check valve is partially closed, restricting flow. This is a mechanical device that can become contaminated over time and it may not open and close as needed.
D. Your pump may be worn out, needing replacement. Over time, mineral deposits can build up on a liquid ring pump, or the internal parts may become rusted beyond repair. When this happens, performance of the pump will suffer.
