Quad 4300 Stovetop Discoloration

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cmcramer

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Feb 19, 2007
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www.cramersoftware.com
Is this a symptom of overfiring my month old Quadrafire 4300 ?

I use a magnetic thermometer on the outside of the single wall stovepipe and keep it reading under 550 at all times, usually at 350-450. (Dealers's suggested temps...)

Should I be concerned about this discoloration?
 

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My guess is that it is more of a paint problem than overfiring. It should be extremely difficult to overfire that stove - and the temp on a single wall part of the top of that stove should be able to be at 800 or so with no problems.

Probably can be fixed with a little steel wool and some touch up paint.
 
Craig, if I am reading this correctly, the 550 temp is of his single wall stove pipe. That translates into 1100F internal flue temp. It is at the edge of the safety zone.

Craig may very well be correct on the paint issue. It could just be a weak paint job, but don't get used to running the surface temp of your stove pipe at 550. Try and keep it somewhere south of that. A picture of the whole stove may also give a better reference to your problem (ya know, lighting, shadows, that kind of thing). Usually overfiring will produce a "white-ing" of the paint. Like a chalk type appearance.
 
That's not even the hottest part of the stove either...was there ever anything siting on that spot? Like a pan of water without a trivet? We have a 4300ST and mostly always burn WOT...no paint issues so far.
 
cmcramer said:
Thanks for the advice - I'll clean it and paint it and watch what happens. BTW, Last night I recorded 890 stovetop temp at the sight of discoloration, stovepipe temp read 450.
Click to expand...

Ummm...I don't know about others, but when I am heading towards 900F stove top, I start slamming things shut - like primary air. Again - IMHO you are at the edge of the safety zone. At least in my mind.
 
Jags said:
cmcramer said:
Thanks for the advice - I'll clean it and paint it and watch what happens. BTW, Last night I recorded 890 stovetop temp at the sight of discoloration, stovepipe temp read 450.
Click to expand...

Ummm...I don't know about others, but when I am heading towards 900F stove top, I start slamming things shut - like primary air. Again - IMHO you are at the edge of the safety zone. At least in my mind.
Click to expand...

My Endeavor will usually have a brief (30 minute or so) spike to 700F when a load begins off gassing really well, and that is as high as I like to push it. You get your most meaningful heat then, but that's still as far as I like to go.
 
Here is the response from Quadra Tech Support, via my Dealer:

Paint can deteriorate in this area due to use, we supply a can of touch up paint with every unit that can be used to re cover the affected areas.

800 degrees is a little warm, try to keep the unit between 300-600 most times with a max of 800.

So, Maximum of 800 it is.
 
cmcramer said:
Here is the response from Quadra Tech Support, via my Dealer:

Paint can deteriorate in this area due to use, we supply a can of touch up paint with every unit that can be used to re cover the affected areas.

800 degrees is a little warm, try to keep the unit between 300-600 most times with a max of 800.

So, Maximum of 800 it is.
Click to expand...

Now your talking!! ;-)
 
My Quad 5700 has a chalky white spot on the stove top after 2+ years of burning. It has seen some accidental 800+ stove top temps. I'll most likely touch up the metal this spring; however, the paint on your 4300 almost seems pitted. Is the bare metal exposed? Either way a scotch brite and touch-up will fix it.
 
fullbore said:
My Quad 5700 has a chalky white spot on the stove top after 2+ years of burning. It has seen some accidental 800+ stove top temps. I'll most likely touch up the metal this spring; however, the paint on your 4300 almost seems pitted. Is the bare metal exposed? Either way a scotch brite and touch-up will fix it.
Click to expand...

Nope, not pitted, but I understand what you are referring to, The 'chalky white' discoloration has spots/lines.....sort of like the stems and flowerheads of the lavander I throw on the stove now and then...
 
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