It is often heard that experimenters encounter some faults when operating the muffle furnace, which delays time and process. The following provides some solutions for some common faults encountered in the experimental operation of the furnace:

1. There is no display when the muffle furnace is turned on, and the power indicator does not light up: check whether the power cord is intact; whether the leakage circuit breaker switch on the back of the instrument is in the “on” position; whether the fuse is blown.

2. Continuous alarm when starting up: Press the “Start and Insert” button in the initial state. If the temperature is greater than 1000℃, the thermocouple is disconnected. Check whether the thermocouple of the muffle furnace is in good condition and whether the connection is in good contact.

3. After the muffle furnace enters the experimental test, the “heating” indicator on the panel is on, but the temperature does not rise: check the solid state relay.

4. After turning on the power supply of the muffle furnace, in the non-experimental state, the furnace temperature continues to rise when the heating indicator light is off: measure the voltage at both ends of the furnace wire. If there is 220V AC voltage, the solid state relay is damaged. Replace with the same model Can be.

5. If the high-temperature muffle furnace has problems with fogging during operation, please contact the manufacturer in time.

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