Common faults and solutions for customized box type atmosphere furnaces

Customized box type atmosphere furnaces may encounter some common faults during use. Here are some common faults and their solutions:
1、 The vacuum degree cannot reach the preset value or the vacuum degree drops too quickly
Fault phenomenon: The vacuum degree cannot reach the preset value or the vacuum degree drops too quickly.
Cause analysis:
The vacuum pump is damaged or its performance has decreased.
Vacuum pipeline leaks air.
Vacuum gauge malfunction or inaccurate reading.
The sealing components are aging or damaged.
resolvent:
Check if the vacuum pump is working properly, and replace or repair it promptly if it is damaged.
Check if there is any air leakage in the vacuum pipeline and connections. If there is any air leakage, replace the seals or repair the pipeline.
Calibrate or replace faulty vacuum gauges.
Replace aging or damaged seals.
2、 Uneven temperature distribution inside the furnace
Fault phenomenon: Uneven temperature distribution inside the furnace, resulting in uneven heating of the sample.
Cause analysis:
The heating element is damaged or aged.
Unreasonable furnace design or decreased performance of insulation materials.
Temperature control system malfunction.
resolvent:
Check if the heating element is damaged, and replace it promptly if there is any damage.
Adjust the furnace structure or add insulation materials to improve temperature distribution.
Calibrate or replace faulty temperature controllers.
3、 The parameters such as atmosphere concentration and flow rate cannot reach the preset values or fluctuate greatly
Fault phenomenon: Parameters such as atmosphere concentration and flow rate cannot reach the preset values or fluctuate greatly.
Cause analysis:
Unstable atmosphere source or insufficient supply.
Flow meter malfunction or inaccurate readings.
Controller malfunction or improper setting.
Valve leakage or inaccurate control.
resolvent:
Replace the stable atmosphere source or ensure sufficient atmosphere supply.
Calibrate or replace faulty flow meters.
Replace or repair the faulty controller and check if the settings are correct.
Replace valves that are leaking or have inaccurate control.
4、 Leakage or inability to fully close the furnace door when it is closed
Fault phenomenon: When the furnace door is closed, there is air leakage or it cannot be completely closed.
Cause analysis:
The furnace door seal is aging, damaged, or improperly installed.
The furnace door is deformed or damaged.
resolvent:
Replace aged or damaged furnace door seals.
Reinstall the furnace door to ensure it is properly closed.
Replace deformed or damaged furnace doors.
5、 The control system is not functioning properly
Fault phenomenon: The control system cannot work properly, such as the display screen not displaying, buttons not responding, etc.
Cause analysis:
Power failure or poor connection.
Controller malfunction or damage.
Line connection issues or damage.
resolvent:
Check if the power supply is connected properly, and if there is a problem, reconnect or replace the power supply.
Replace the faulty controller.
Check if the circuit connection is correct, and if there are any errors, reconnect or replace the damaged circuit.
6、 Other faults
Fault symptoms: such as slow temperature rise, temperature overshoot, direct temperature rise leading to over temperature protection, etc.
resolvent:
When the temperature rises slowly, check whether the regulating baffle of the air circulation is open normally and whether the motor is running normally.
When the temperature overshoot occurs, adjust the setting parameters of the PID.
When the temperature rises directly and causes overheating protection, replace the faulty control instrument.
Fault prevention and maintenance suggestions
Regularly check whether all components of the equipment are in good condition, and replace or repair them in a timely manner if there are any problems.
Regularly clean and maintain the equipment to keep it clean and tidy.
Record furnace operating parameters, including temperature, pressure, and vacuum readings, to monitor performance and promptly identify issues.
Regularly check the vacuum pump oil for signs of contamination or degradation and replace it.
Check the normal function of the water cooling system to ensure that there are no leaks, blockages, or pressure issues that may affect performance.
In summary, there are various common faults and solutions for customized box type atmosphere furnaces. Users need to pay attention to observing and recording the operating status of the equipment during use, promptly identify problems, and take corresponding solutions. Meanwhile, strengthening the daily maintenance and upkeep of equipment is also an important measure to prevent malfunctions from occurring.