Check the condensor on the units to be certain they are free of dust and grime. This is where the heat is dispelled and if it is clogged, the units will work harder and possible die prematurely.
Fire up the units with a bucket of water in each box. Let run a couple of days and then measure temp. with calibrated thermometer. Adjust to desired temperature. Preferably 38 F. Keep us informed on your progress.
Scott Zuhse, Instructor
Micro Matic Dispense Institute