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Bisque Kiln Fired Hot Too Long

kiln bisque firing too hot too long troubleshoot results

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#1 Nicole D

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Posted 09 May 2017 - 10:38 AM

Hi everyone,

 

What will happen to bisque work that has fired too hot for too long? I fired a bisque on Thursday night, and realized on Tuesday morning when I checked it that it was still at 1234 degrees and not cooling. It said "Complete". I hit stop, and it didn't begin cooling (although said Idle), so I turned off the circuit breaker. I have a kiln electrician coming out to check on the kiln, but my biggest concern is the work inside (not my work, but student work). I assume it's ruined?



#2 neilestrick

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Posted 09 May 2017 - 11:50 AM

Sounds like you have a stuck relay. When they stick in the on position the kiln won't cool completely because that section stays on. The controller can't shut it down because the relay is fused, so turning off the circuit breaker is the correct solution. Sitting at that low a temp it shouldn't have any negative effects on your work. If all the relays are fairly old you should just replace them all. They tend to wear at the same rate.


Neil Estrick
Kiln Repair Tech
L&L Kilns Distributor
Owner, Neil Estrick Gallery, LLC
www.neilestrickgallery.com

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#3 Nicole D

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Posted 09 May 2017 - 12:19 PM

Thank you! I spoke to our kiln guy (Tony at Boston Kiln, if anyone is in the area he's your man! http://www.bostonkiln.com/)and he said the same thing. I know I can always replace parts, but I was so worried about the students works. Especially our beginners when every pot is so precious to them.







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