The coil is wound with copper wire around a metal plunger, when the coil is energized it pulls the plunger upwards which then opens the water valve allowing the washing machine to fill.Originally Posted by Mulden
The timer on the washing machine energizes the solenoid, the washing machine uses a water level switch, small diaphragm encased inside a housing which is attached to a small plastic tube affixed to the tub being filled. As the water level increases the water compresses the air inside the plastic tube which eventually pushes against the diaphragm. The compressed air when enough water has filled the tub will open a set of contacts inside the water level switch closing another to once again energize the timer circuit allowing it to advance to the wash cycle.
After the wash cycle we get the rinse cycle, the timer has cams inside and these cams now open and close the water solenoid to allow rinse water to enter the tub to get rid of soap. The rinse cycle is timer motor dependent, the length of the hump on the cam determines the duration of the rinse water.
A washing machine will have a hot and cold solenoid while a dishwasher will have only one. The dishwasher uses a float to determine how much water enters into the machine.
Dishwashers are hooked up to the hot water service of your house, after the machine has filled there's a heating coil which heats the water even more. The thing I have noticed with the use of a dishwasher and it makes for a good argument for the woman of the house to have her own is that folks who use them have fewer colds.
That super hot water kills germs, keeping the family healthy.
Your frost free refrigerator is another story, IMHO these are a breeding ground for germs and fungus. Inside there is a drain tube which carries the defrosted water down to a pan located near or above the compressor were the excess water is evaporated into the atmosphere inside your home.
A common complaint was water accumulating on the bottom of the refrigerator, the drain tube had clogged with mold. Before all the regulations on freon came to be a quick shot from the pressurized freon bottle from under the fridge would unclog the drain tube. Then you had to clean off all the crap inside the fridge that blew out of the line.
I always informed my customer that every 4 or 6 months a teaspoon of dilute bleach poured into the top side of the drain tube would eliminate the need to call in a service tech.
Re: your solenoid, toss them into breakage, your yard may ask you to remove the large plastic case that contains the valve. The older units had 4 screws the newer ones probably riveted just drill out the center of the rivet then use a pin punch to remove the remainder.
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