Common faults and solutions of box type experimental muffle furnace

The box type experimental muffle furnace may encounter some common faults during use. Here are some common faults and their solutions:
1. Abnormal temperature
Fault phenomenon:
The temperature display is inaccurate or does not match the actual temperature.
The temperature cannot reach the expected set value.
resolvent:
Check the thermocouple:
Ensure that the thermocouple is correctly inserted into the furnace and maintains good contact with the inner wall of the furnace.
Check if the scale mark of the thermocouple is consistent with the scale mark of the temperature control instrument. If it is not consistent, it needs to be replaced or adjusted.
Check the temperature control system:
Check whether the set value and actual value of the temperature control instrument are consistent. If they are not consistent, they need to be reset.
Check whether the sensors, circuits, and controllers of the temperature control system are working properly. If there are any faults, they should be repaired or replaced in a timely manner.
2. Part of the wires in the box type resistance furnace are not red
Fault phenomenon:
The temperature in some areas of the furnace is insufficient, and the furnace wire is not red.
resolvent:
Check the power supply and wiring:
Check if the power supply voltage is normal. If the voltage is unstable or too low, adjust or replace the power supply.
Check if the power circuit is securely connected and if there is any looseness or short circuit.
Check the furnace wire and solid-state relay:
Use a multimeter to check if the furnace wire is open or if the resistance value is abnormal. If there is a problem, replace the furnace wire.
Check if the solid-state relay is damaged or if the control circuit is in good condition. If there is a fault, replace the solid-state relay or repair the control circuit.
Check the controller:
Check whether the controller is working properly, such as whether there are any problems with the internal switches, fuses, and furnace door travel switches of the controller.
If the controller malfunctions, it needs to be repaired or replaced according to the controller fault maintenance method.
3. The furnace door is not tightly sealed
Fault phenomenon:
The furnace door is not tightly sealed, resulting in heat loss or temperature fluctuations inside the furnace.
resolvent:
Check the sealing ring of the furnace door:
Check whether the sealing ring of the furnace door is aging, worn or damaged, and replace it in a timely manner if there are any problems.
Ensure that the furnace door sealing ring is installed correctly without any misalignment or deformation.
Adjust the furnace door:
Adjust the switch position of the furnace door to ensure that it fits tightly against the furnace body when closed.
If the furnace door is deformed or damaged, it needs to be repaired or replaced.
4. Other common faults and solutions
Cooling system malfunction:
Check whether the cooling system is working properly, such as whether the cooling water is sufficient and whether the cooling fan is running normally.
If the cooling system malfunctions, it needs to be repaired or replaced in a timely manner.
Control panel malfunction:
Check if the control panel displays normally. If the display screen is damaged or the buttons malfunction, replace the control panel.
Check if the connection line between the control panel and the main controller is firmly connected. If it is loose, it needs to be reconnected.
Power failure:
Check if the power plug is securely plugged in and if the power outlet has power.
If there is a power failure, it is necessary to promptly contact a professional electrician for maintenance.
In summary, the common faults and solutions of the box type experimental muffle furnace involve multiple aspects, including abnormal temperature, non red furnace wires, poor sealing of furnace doors, as well as faults in the cooling system, control panel, and power supply. When solving these faults, it is necessary to carefully inspect and take corresponding measures to ensure that the muffle furnace can work properly and meet the experimental requirements.