Glycol cooled system cleaning procedure

[Perfect Pour Services]

When cleaning beer lines on a system that has a draw of about 50 feet or less and uses a glycol cooling system, is it necessary to turn the glycol system off when cleaning. Process of cleaning I use is a circulating pump, running through water cleaner mixture then cold water for rinse. If I don't turn off glycol system first will I experience frozen lines or other unwanted issues?

[Scott Zuhse]

Preferably, if glycol unit is equipped, power off just the circulation pump(s). When pumps are turned back on the glycol bath will be at desired temperature.