Common faults and solutions of laboratory resistance furnaces

The laboratory resistance furnace may encounter various faults during use. Here are some common faults and their solutions:

1. Unstable temperature
Possible reasons:

The temperature sensor is damaged or loose.
The control circuit has malfunctioned.
resolvent:

Check if the temperature sensor is loose or damaged, and replace it promptly if there is a problem.
Check if the control circuit is in good contact, and if there is a fault, repair or replace the relevant circuit.
2. Slow heating speed
Possible reasons:

The power supply voltage is insufficient.
The resistance wire is aging.
Excessive accumulation of ash in the furnace.
resolvent:

Check if the power supply voltage is stable and adjust the voltage appropriately.
Check if the resistance wire is aging, and replace it with a new one if necessary.
Regularly clean the accumulated ash in the furnace to maintain its cleanliness.
3. The furnace door is not tightly sealed
Possible reasons:

The sealing strip of the furnace door is aging or damaged.
The furnace door did not tightly adhere to the furnace body when closed.
resolvent:

Check whether the sealing strip of the furnace door is aging or damaged, and replace it with a new sealing strip in a timely manner if there is a problem.
Ensure that the furnace door tightly fits the furnace body when closed to reduce heat loss.
4. Electric furnace wire circuit breaker
Possible reasons:

Long term use of electric furnace wires can lead to aging or damage.
The power supply line malfunction caused the electric furnace wire to malfunction.
resolvent:

Use a multimeter to check if the electric furnace wire is open circuited. If there is an open circuit, replace it with an electric furnace wire of the same specification.
Check if the power supply circuit is in good contact, and if there is a fault, repair or replace the relevant circuit.
5. Controller malfunction
Possible reasons:

The internal switch, fuse or furnace door travel switch of the controller has malfunctioned.
Controller parameter setting error or circuit failure.
resolvent:

Inspect the switches, fuses, and travel switches inside the controller, and repair or replace them if there are any malfunctions.
Check if the parameter settings of the controller are correct, and reset them if there are any errors.
If there is a malfunction in the controller circuit, please have professional personnel perform maintenance.
6. Power supply failure
Possible reasons:

The voltage drop of the power supply line is too large.
The socket and control switch have poor contact.
resolvent:

Adjust the voltage drop of the power supply line to ensure voltage stability.
Check if the socket and control switch are in good contact. If there is poor contact, replace or repair them.
In summary, the common faults of laboratory resistance furnaces mainly include unstable temperature, slow heating speed, poor sealing of furnace doors, open circuit of electric furnace wires, controller failure, and power supply failure. Corresponding solutions can be taken to ensure the normal operation of the resistance furnace in response to these faults. Meanwhile, regular maintenance and upkeep of the resistance furnace is also an important measure to prevent malfunctions from occurring.