Weird film on outside of lines in Keezer

[jamorgan3777]

Strange thing here. I am getting a white film on the lines in the keezer. Its on the outside of the lines. It is "frozen" when the keezer is running, but then it melts and becomes an oily substance when the keezer warms up. Is this something from the compressor? I havent noticed anything off tastes in the beer or lack of foam/head generation. I ususally just wash it off when I clean the lines out between batches.

Anyone ever seen this before? Its a cheap chinese freezer I got from Menards so could be anything.

 

[RasMouSein]

Sounds like it's caused by high humidity. Some types of hose will have what you seem to have.
Keezer's were meant to be below zero, and the cheep ones do not have humidity control.

Just my thought