I have a 2008 Beverage Air curved glass ice cream freezer I recently acquired that will not cool lower than 40 degrees. The model number is CV-330ICAN. I have had it running for 24 hours and the lowest the temp has gone is 39 degrees. Everything seems to be running fine. The compressor and fans are both running. The coils are clean. The person I got the freezer from said he used it about a year ago and everything ran fine. I'm not sure what's going on with it now, but I'm thinking maybe freon is low? Any help would be greatly appreciated! I am really trying to get this thing freezer back up and running properly. Thanks!