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KM(Frigidaire) gas range M#790.77469804 over flames


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11 replies to this topic

#1 RedToryTy

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Posted 30 October 2011 - 01:37 PM

To the dojo,

I have a KM(Frigidaire) gas range M#790.77469804 that over-flames on either broil setting ("Hi" or "Lo"). By "over-flames," I mean the flame spreads all the way out to the walls of the bake compartment. Because of this malfunction, and its relation to an icemaker overfilling situation I addressed yesterday, I believe the clock (http://www.repaircli...er=790.77469804) incorrectly calls for too much gas. I further believe the clock malfunctions because "Bake" functions correctly while operating off the same gas valve (http://www.repaircli...er=790.77469804).
I will attach video when able.

Domos in advance,
The Red Grasshoppah
Mr. Tyrus Lee Smith
Owner-Operator, Smith's Appliance Service
701 Baldwin Falls Road
Baldwin, Georgia 30511-2108
706-778-3411

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#2 KurtiusInterupptus

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Posted 30 October 2011 - 02:22 PM

Whoa there grasshopper ...didn't catch the gas this unit is running on...lpg I would bet.
also would bet the orfice hood on the broiler hasn't been shut all the way down.
the clock has nuthin' to do with the amount of gas supplied to the burner...
As every cockroach knows , thriving on poisons is the secret of success.

#3 RedToryTy

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Posted 30 October 2011 - 08:27 PM

Sensei Kurtis,

Can you send service literature about where to adjust the broiler orfice hood?
Mr. Tyrus Lee Smith
Owner-Operator, Smith's Appliance Service
701 Baldwin Falls Road
Baldwin, Georgia 30511-2108
706-778-3411

#4 KurtiusInterupptus

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Posted 31 October 2011 - 12:36 AM

I don't work for sears so no access to their tech docs....to adjust the orifice hood,simply be sure it is tightened allthe way till it stops turning...sometimes those last half turns feel to me like I am stripping it, but im not.
make this adj with a 1/2" wrench.
if yer real careful, you can do this while it is burning and see the difference as you tighten...
As every cockroach knows , thriving on poisons is the secret of success.

#5 Chat_in_FL

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Posted 31 October 2011 - 05:45 AM

Attached File  Clipboard01.jpg   21.18KB   7 downloadsTighten orifice hood (#1) as descibed above:

Edited by Chat_in_RI, 31 October 2011 - 05:46 AM.

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#6 Budget Appliance Repair

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Posted 31 October 2011 - 06:03 AM

And also, it doesn't use the same gas valve for bake and broil, it uses a dual valve. One valve is for bake and the other is for broil.

This one is a little different then the standard dual gas valves where the valve is all one piece but one half is for bake and the half for broil.

In your particular model they chain two normal gas valves together and it is only available as a complete unit.

01016845.jpg


William Burk (Willie)
Willie's Budget Appliance Repair
Eureka, CA 95501

#7 RedToryTy

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Posted 31 October 2011 - 07:11 AM

The orfice looks to be all the way down; will double-check with a new gas valve in tow (just in case).
Mr. Tyrus Lee Smith
Owner-Operator, Smith's Appliance Service
701 Baldwin Falls Road
Baldwin, Georgia 30511-2108
706-778-3411

#8 RedToryTy

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Posted 31 October 2011 - 07:30 AM

So, if its not on the dual valve, where's the broil orfice?
Mr. Tyrus Lee Smith
Owner-Operator, Smith's Appliance Service
701 Baldwin Falls Road
Baldwin, Georgia 30511-2108
706-778-3411

#9 certified tech group 51

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Posted 31 October 2011 - 09:42 AM

'Waist high ' broil....orifice should be at/near the burner tube... ( gas supply tube/ mixer elbow ) ............Same adjustment as the bake orifice.... Did not catch the type of fuel being used....Customer switch fuel type???? Is the bake flame O.K.??....did the broil ever work correctly???? Be easy on tightening the orifice, the elbow is attached to the wall ( porcelain coated)...........you will hear the porcelain cracking.......

#10 RedToryTy

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Posted 01 November 2011 - 10:26 AM

Uses natural gas, and, as far as I know, hasn't switched fuels. Worked fine until recently, because the dad used broil in a Thanksgiving recipe. The bake flame works great.
Certified, the broil orifice runs up the outside back of the range?
Mr. Tyrus Lee Smith
Owner-Operator, Smith's Appliance Service
701 Baldwin Falls Road
Baldwin, Georgia 30511-2108
706-778-3411

#11 KurtiusInterupptus

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Posted 01 November 2011 - 10:41 AM

Follow the broil burner tube...orifice spud should be injecting gas right into the air mixer/venturi tube at the end.
natural gas, huh? Something is fishy in Denmark...
As every cockroach knows , thriving on poisons is the secret of success.

#12 kdog

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Posted 01 November 2011 - 01:08 PM

broil orifice runs up the outside back of the range?


Looks like this:

00726922.jpg

http://www.repaircli...er=790.77469804

 


If it worked fine until someone broiled something, I would be checking the position/condition of the burner as it could be plugged up with something, or air shutters got turned shut etc


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