Thank you very much for your thoughts on that! The motor was still running this morning after the kiln had completely cool down, so I don’t think the heat has anything to do in this case with the heat coming from the kiln. (Even when the kiln was running close to 2000°, I could still put my hand on the metal vent pipe leading from the kiln to the envirovent motor on the wall.
However, the metal of the motor casing was still too hot to touch for very long at all, even this morning while the kiln was at room temperature and had been most of the night. But it is still moving air at least, and not noisy. It is mounted on a wall that has double drywall And a concrete floor and nothing combustible around it except for the killing about 18 inches away, so I think/Hope if the motor had an arc or got so hot it melted down I don’t believe it would start a fire.
We have a big pottery show scheduled for the first weekend in November, and so during this two weeks I have almost constant glaze firing‘s lined up for that kiln. I will keep an eye on the motor and I’m thinking of trying to get another one as a back up as soon as possible, As it would be costly to be shut down for a long time waiting for a new motor to come.