Winterize LG residential ice maker with air ?

I blow out ALL hot and cold water lines first including low point drains. Then, with the refrigerator turned on, lower the ice maker arm in the freezer and let the ice maker cycle. Each time the solenoid opens, air will push the water completely out of the supply line. Set your air regulator to 40 psi and let the ice maker cycle a couple of times. To speed up the purging of the ice maker line, turn your refrigerator on 24 hours BEFORE putting air to it. I just let mine sit for a couple of hours with air against it and job is done. Works great.