Common faults and solutions of box type vacuum muffle furnace

05-13-2025       Author: KJ technology

The box type vacuum muffle furnace may experience various malfunctions during use. Here are some common malfunctions and their solutions:

Heating malfunction:

Reason: Damage to heating element, circuit malfunction, etc.

Solution: Check if the heating element is functioning properly, repair or replace damaged components. At the same time, check if the circuit connections are good and if there are any open or short circuits.

Unstable temperature:

Reason: Temperature controller malfunction, thermocouple damage, inconsistent division marks between thermocouple and temperature control instrument, etc.

Solution: Calibrate or replace the temperature controller, check if the thermocouple is functioning properly, and ensure that the scale marks of the thermocouple and the temperature control instrument are consistent.

Unable to reach the set temperature:

Reasons: power supply issues, poor furnace sealing, improper installation of thermocouples, open circuit of heating elements, etc.

Solution: Ensure stable power supply, check the sealing condition of the furnace and repair it; Adjust the insertion depth of the thermocouple to ensure that it accurately reflects the temperature inside the furnace; Check if the heating element is open circuited, and replace it if necessary.

The furnace door is not tightly sealed:

Reason: The sealing strip is aging or damaged.

Solution: Replace the sealing strip to ensure good sealing of the furnace door.

Control system malfunction:

Reason: Circuit problems, controller malfunctions, etc.

Solution: Check the circuit connection, repair or replace the damaged controller. At the same time, check the power supply and grounding of the controller to ensure its normal operation.

Insufficient vacuum degree:

Reason: Vacuum pump malfunction, aging or damaged seals, pipeline leakage, etc.

Solution: Check the working status of the vacuum pump, repair or replace faulty components; Replace aging seals; Check if there is any air leakage at the pipeline connection, and seal it if necessary.

Excessive noise:

Reason: Loose or faulty mechanical components, unbalanced fan blades, etc.

Solution: Tighten loose mechanical components, repair or replace faulty parts; Balance or replace the fan blades.