Box-type resistance furnace heats up slowly
Thread Content
The heating rate given by the machine in the instruction manual is 90 minutes from 0 to 700 degrees. However, yesterday, perhaps due to a wiring problem, the muffle furnace overheated. After rewiring, it can be heated up and used, but the speed feels much slower. Has any user encountered such a situation?
There is usually more than one heating wire in a resistance furnace. Maybe one of the heating wires in your furnace has burned out, or there is something wrong with your temperature measurement system. Find an electrician to check.
I consulted an engineer today, and their opinion was that one set of heating tubes might be broken. The detection method they gave was to use a multimeter to measure the resistance.
Have an electrician check your heating wire, or measure the electric cathode to see if there is any change.