How I winterized my Whirlpool residential fridge ice maker
On the weekend, I used the Pink antifreeze to winterize my Whirlpool residential fridge. The issue, as noted by others, is that you have to run the fridge for a few hours to get it into the mood of making ice cubes. And at the same time, you have to keep the pressure up on the Pink antifreeze so that it comes up the line on each ice cube cycle.
I finally applied pressure from my air hose. If you want to keep the air hose from being stolen while you do this overnight, drop it to the ground from the generator compartment and route it back to the water bay, coming in on the hose entry doors.
After this exercise, I realize that I didn't need the Pink at all. All I had to do was keep the air pressure on for a day or so while I ran the refrigerator.
There are two gotchas in this procedure.
1. FR likes to put the ice maker line on the bathroom sink rather than the kitchen sink. This makes it a very long line, so the procedure will take longer, even assuming that you blew out the bathroom taps already. I finally cut the line and installed a female garden hose-to-1/4" compression adaptor under the kitchen sink and blew into the much shorter hose. In the Spring, I'll move the water takeoff from the bathroom to the kitchen.
2. When you apply air pressure on the system (even only 50 psi) with no filter in the FR1 water filter housing, the housing tends to unscrew itself and blow off with an explosive effect. This has been noticed elsewhere, and I might have to swap out that filter housing next year. If you are only blowing air and not Pink, you can leave the filter in, and it never blew off for me with a filter in it. For this year, my solution was to blow air directly into the 1/4" ice maker line, as noted above.