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Bonavita kettle leaking/rusting
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Discussions > Coffee > General > Bonavita kettle...  
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dana_leighton
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Posted Tue Apr 30, 2013, 9:38am
Subject: Bonavita kettle leaking/rusting
 

My Bonavita variable temperature kettle seems to have sprung a (slow) leak. I noticed it because some corrosion seems to be seeping out from the seam between the metal and plastic. I have submitted a warranty claim. The base was already replaced, so this will be a whole new kettle! :)

Anyone else encounter this problem?

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dana_leighton
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dana_leighton
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Posted Tue Apr 30, 2013, 9:39am
Subject: Re: Bonavita kettle leaking/rusting
 

Another area

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CraigA
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Posted Tue Apr 30, 2013, 12:58pm
Subject: Re: Bonavita kettle leaking/rusting
 

dana_leighton Said:

My Bonavita variable temperature kettle seems to have sprung a (slow) leak. I noticed it because some corrosion seems to be seeping out from the seam between the metal and plastic. I have submitted a warranty claim. The base was already replaced, so this will be a whole new kettle! :)

Anyone else encounter this problem?

Posted April 30, 2013 link

No, & my kettle is used twice a day & date code 3412., which is the 34th week of 2012.

Dana, do you fill the kettle right up, past the 1 liter marking., maybe up to but not touching the inside bottom of the top part of the black attaching piece?

 
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dana_leighton
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Posted Tue Apr 30, 2013, 1:24pm
Subject: Re: Bonavita kettle leaking/rusting
 

Craig, Did you mean date code 1234? Mine is the same - bought in December from Gimme! Coffee.

I do not fill it above the marking tab, but it is possible that after expansion, the level might rise. There seems to be a silicone seal behind the black handle attachment...

 
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CraigA
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Posted Tue Apr 30, 2013, 3:00pm
Subject: Re: Bonavita kettle leaking/rusting
 

dana_leighton Said:

Craig, Did you mean date code 1234? Mine is the same - bought in December from Gimme! Coffee.

Posted April 30, 2013 link

I mean the way I see it printed on the bottom sticker on mine, & posted it. If yours is skewed it doesn't matter, same thing.. ;)

I do not fill it above the marking tab, but it is possible that after expansion, the level might rise. There seems to be a silicone seal behind the black handle attachment...

Yes, there's a seal there. As on the manual kettle, that handle has a cut out in the top back of it. That's for steam vapor to travel down through a hollow channel in the handle to auto trip a thermostat in the base of the kettle, so the on/off flip swith at the bottom of the handle flips/turns off.

The handle on the digital kettle appears to me to be the same handle/part (except for the manual switch at the bottom). What I believe may be happening is that the excess steam/water vapor is running down inside that same handle & collecting between the bottom of the ss bottom of the kettle & the plastic base.

The manual kettle had two cut out slots at the base of the kettle directly under the handle to vent excess steam vapor/condensing water when coming to a boil. The manual kettle trips off after a period of full boil (not sure of the time, 18 - 20 secs maybe?) for the time needed for the steam vapor to travel to the thermostat to trip the switch.
With the digital kettle, if you're setting it at or near the boiling point, my theory is that this extended period is producing excessive water vapor/steam that's condensing as water in the base with no method of escaping.

I'd have to take mine apart to confirm this though, but I'm in the middle of dinner at the moment.

 
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dana_leighton
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Posted Tue Apr 30, 2013, 4:03pm
Subject: Re: Bonavita kettle leaking/rusting
 

CraigA Said:

With the digital kettle, if you're setting it at or near the boiling point, my theory is that this extended period is producing excessive water vapor/steam that's condensing as water in the base with no method of escaping.

Posted April 30, 2013 link

Perhaps. I am setting the temperature at 204 so it should not be at boiling, but it is close I guess. Nevertheless, I think it should not be causing corrosion. Maybe needs a hole at the bottom to vent out any moisture that travels down the handle?

 
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CraigA
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Posted Tue Apr 30, 2013, 5:43pm
Subject: Re: Bonavita kettle leaking/rusting
 

Hi Dana,

Well my theory was wrong for the digital model kettle. I took off the handle & it dosen't have a hollow channel for steam, it's just a handle.

The only other way for it to leak would be through the temperature probes silicone grommet seal on the bottom of the kettle. I just took the bottom off of my kettle (they have what's called a TA triangle drive head) & the bottom & sidewall of the kettle is welded together.

Looks like a perfect robotic laser weld, barely indistinguishable from the bottom to the circumferential sidewall!

 
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jpender
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Posted Tue Apr 30, 2013, 5:57pm
Subject: Re: Bonavita kettle leaking/rusting
 

Is it possible that the moisture is getting in from the outside, right at that seam where you are seeing the corrosion?
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dana_leighton
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dana_leighton
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Location: Little Rock, AR
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Espresso: Isomac Relax; Caferina...
Grinder: Macap MXK; Baratza Vario-W;...
Vac Pot: Yama 5-cup
Drip: Technivorm; CCD; Melitta
Roaster: Poppery I w/PID controller
Posted Sat May 18, 2013, 4:58pm
Subject: Re: Bonavita kettle leaking/rusting
 

Update: Bonavita sent a replacement kettle with a return shipping tag for me to return the defective one. So far so good.

 
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