paul_h
15-10-2008, 09:11 AM
I've just looked at a small ice machine that continually defrosts and harvests after only 20-30sec running.
It's one of these:
http://www.diytrade.com/china/4/products/4300616/Automatic_Ice-Making_Machine.html#normal_img
It doesn't seem to have anything to start a defrost, ie any evap sensor or pressure control. ANyone seen anything like this?
Has a small PCB with bin thermistor, water level switch, a motor to drop the tray for defrost, and a motor to run agitator paddles.
How the hell does it know when to defrost? I can't fix something I can't see.
Anyone worked on these machines?
It's one of these:
http://www.diytrade.com/china/4/products/4300616/Automatic_Ice-Making_Machine.html#normal_img
It doesn't seem to have anything to start a defrost, ie any evap sensor or pressure control. ANyone seen anything like this?
Has a small PCB with bin thermistor, water level switch, a motor to drop the tray for defrost, and a motor to run agitator paddles.
How the hell does it know when to defrost? I can't fix something I can't see.
Anyone worked on these machines?