[happytappy]

I am a newbie with enough knowledge to be dangerous. I am working with an older glycol system that doesn't want to cool below 46 degrees F. That is temp temp of the beer at the faucet. It is circulating glycol and is adjusted to the coldest setting. The glycol level is okay and the walkin/product temperature is 34-36 degrees. My questions are as follows.
1. What temp should the glycol resevoir (bath) be if ambient is 60 F.?

2. How can you test efficiency of the glycol itself (hydrometer, lab) ?

To make matters worse, the new owners of this system know nothing about it and with out a dissasembly, I can not tell if the towers (2 X 4 product) are true glycol units or how long the run is. I am assuming 40-50 foot.

Thanks for the help

Beer is good