Thread Number: 7025
A Question for Frigidaire Experts
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Post# 138764   6/29/2006 at 10:39 (6,482 days old) by bajaespuma (Connecticut)        

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Given my limited knowlege of how water valve solenoids work, how did the 1958 Frigidaire WCI's deliver "COOL" water? The wash temp control offers HOT, WARM, COOL. The rinse temp dial offers WARM, COOL, COLD. Can those solenoids be controlled to open only halfway?




Post# 138768 , Reply# 1   6/29/2006 at 11:21 (6,482 days old) by toggleswitch (New York City, NY)        

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Good question. One I was always afraid to ask.

Post# 138776 , Reply# 2   6/29/2006 at 11:54 (6,482 days old) by unimatic1140 (Minneapolis)        

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It simple, the water valve had three solenoids. One for hot, one for warm and one for cold.

When hot is selected the hot solenoid is energized bringing in hot water only from your hot water line.

When warm is selected the warm solenoid is energized which mixes hot and cold and keeps the water around 105F by raising or lowering a copper thermostatic plunger to regulate how much hot water enters the mix.

When cold is selected the cold solenoid is energized which brings in tap cold water.

When COOL is selected, the warm and cold solenoid valves are BOTH energized. This mixes 105F warm water with tap cold.

The 1957 Lady Kenmore also has a "Medium" setting which energizes both Hot and Warm solenoids. This mixes hot water with 105F warm water.


Post# 138782 , Reply# 3   6/29/2006 at 12:25 (6,482 days old) by bajaespuma (Connecticut)        
Thank you.

bajaespuma's profile picture
That warm water solenoid was pretty sophisticated for the 1950's. It seems that nobody continued with it, even though it was a very good idea.

Post# 138788 , Reply# 4   6/29/2006 at 13:09 (6,482 days old) by unimatic1140 (Minneapolis)        

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Thermostatic water valves were not new in the 50's, the design was invented by Bendix and used on their 1930's and 1940's machines.

Post# 138797 , Reply# 5   6/29/2006 at 13:50 (6,482 days old) by bajaespuma (Connecticut)        

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Do you have a picture or diagram of one?

Post# 144818 , Reply# 6   7/24/2006 at 20:34 (6,457 days old) by jeff_adelphi (Adelphi, Maryland, USA)        
Photo

jeff_adelphi's profile picture
Here's a photo of a 3 solenoid valve with thermostatic controll of warm temp. (105F), and on the right a newer style valve without the thermostat.


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