Matimata Posted March 25, 2020 Report Share Posted March 25, 2020 Hello everyone, I have bought a second-hand electric Rohde 5024 Kiln (230V) and a TR 305 controller. I have done only 2 biscuit firing at 950C and noticed the pieces were almost vitrified; our mocal clay is rich in iron oxide. I recently did a slow glaze firing at 900C and my work melted down, some kiln shelves are distorted and even broken by the heat. The kiln electric plug is stick to the wall socket.Do you have an idea of what has happened? The whole situation is devastating as I live in West Africa and do not have potters, technicians or manufacturers who know about electric kilns. I have contacted the manufacturer and they said they could not help. I am not familiar with kilns and hope someone could help with the matter.Thank you so much in advance Link to comment Share on other sites More sharing options...
liambesaw Posted March 25, 2020 Report Share Posted March 25, 2020 It sounds like it's overfiring by quite a lot. Also sounds like your circuit may be a bad match to your kiln. Link to comment Share on other sites More sharing options...
neilestrick Posted March 25, 2020 Report Share Posted March 25, 2020 There are a lot of reason that may have happened. If the outlet melted, then I would first check to make sure the circuit and wiring that is was plugged into was big enough for the amperage draw of the kiln. It's also possible that the power cord could have been overheating due to being old, or the plug or outlet was corroded and making a poor connection. That alone shouldn't account for the kiln over-firing, though. The over-firing could have been due to a problem with the thermocouple, the controller, or the relays. Or it's possible that you programmed it wrong (we've all done it!). Without seeing it in person I couldn't say which, though. If the shelves warped then it over fired by a lot. Even with a controller, the only way to make sure a kiln has shut off when it should is to check it in person. Link to comment Share on other sites More sharing options...
Matimata Posted January 14, 2021 Author Report Share Posted January 14, 2021 Thank you so much @liambesaw@neilestrick for taking the time to respond. I have changed the thermocouple and have the kiln circuit to be checked by an electrician but it still overfiring. I am planning to change the controller and see what happens. Thank you all so much and Happy New Year!! Link to comment Share on other sites More sharing options...
neilestrick Posted January 14, 2021 Report Share Posted January 14, 2021 2 hours ago, Matimata said: Thank you so much @liambesaw@neilestrick for taking the time to respond. I have changed the thermocouple and have the kiln circuit to be checked by an electrician but it still overfiring. I am planning to change the controller and see what happens. Thank you all so much and Happy New Year!! Make sure the controller is set for the type of thermocouple you are using. Link to comment Share on other sites More sharing options...
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