Paul, we need to know a lot more about the system such as if it is a glycol system, temperature of the glycol, is the compressor running while you take a temperature, is the circulation pump working correctly, beer temperature, medium being used to pressurize kegs (100% CO2, blend gas in a cylinder, on-site blender, pumps, etc.), actual pressure at keg, pressure leaks, heat at tower end of system, conduit condition, and a few other items[?][?][?]
Scott Zuhse, Instructor
Micro Matic Dispense Institute