Common faults and solutions of customized box type resistance atmosphere furnace

The common faults and solutions of customized box type resistance atmosphere furnace are as follows:

1. Heating and temperature control malfunction
Uneven heating
Reason: Damage to the heating element, such as aging or burning of the resistance wire, can cause local heating failure; The hot air circulation is not smooth, the fan inside the furnace malfunctions, and the hot air cannot circulate evenly; Temperature control system malfunction, temperature controller, sensor malfunction or inaccurate calibration.
Solution: Regularly check the integrity of the heating element and replace it as necessary; Regularly check whether the fan and air duct are blocked to ensure smooth circulation; Regularly calibrate the temperature control system and replace the corresponding components.
The temperature cannot reach the preset value
Reason: Damage to heating element, aging or breakage of resistance wire or heating element; Temperature control system malfunction, temperature controller malfunctioning or improperly set; Impact of working environment, low external temperature, or aging of furnace insulation layer; Furnace leakage, wear or aging of sealing materials, or peeling or cracking of refractory materials inside the furnace.
Solution: Check the condition of the resistance wire and replace it if necessary; Thoroughly inspect the settings of the temperature control instrument, confirm whether it is normal, and calibrate or replace it if necessary; Improve the insulation effect of the furnace body or increase the temperature of the surrounding environment; Check the sealing rings of the furnace door, furnace cover, and junction, and replace them if necessary. Regularly inspect the lining materials of the furnace. If any problems are found, repair or replace them in a timely manner.
Unstable temperature
Reason: Temperature control system malfunction, abnormal temperature controller; Poor thermocouple connection; Furnace leakage.
Solution: Check if the temperature controller is functioning properly and may require calibration or replacement; Ensure that the thermocouple is well connected, clean or replace the thermocouple; Check the sealing of the furnace and promptly repair the leaking parts.
Abnormal temperature display
Reason: The temperature sensor is damaged or the connection is loose.
Solution: Check if the sensor is damaged or if the connection is loose, and replace or reconnect it if necessary.
Temperature out of control
Reason: The thermocouple is damaged and cannot accurately provide temperature feedback; Controller malfunction, resulting in incorrect temperature control.
Solution: Check the thermocouple connection or replace the thermocouple; Replace the controller.

2. Equipment startup and operation failures
The device cannot start
Reason: Power issue, power not connected, power switch malfunction, blown fuse; Control panel malfunction, circuit board malfunction; Overload protection triggered, equipment operates under overload.
Solution: Check if the power supply is properly connected, if the power switch is in the on state, if the fuse is blown, and if the power cord is damaged, replace it in a timely manner; Use a multimeter to detect signals and currents, and have professional personnel perform maintenance; Reduce the load and wait for the device to cool down before attempting to restart.
Trip fault
Reason: The switch is damaged; Resistance furnace leakage, protective switch is functioning; Switch current overload tripping.
Solution: Replace the damaged switch; Check the cause of electric leakage in the resistance furnace and repair it; Adjust the overload protection settings appropriately according to the equipment load situation.

3. Other faults
The furnace door is not tightly sealed
Reason: The sealing strip of the furnace door is aging or deformed, and there are impurities on the sealing surface.
Solution: Adjust the sealing strip of the furnace door or clean the sealing surface.
Furnace deformation
Reason: Long term high temperature use or external impact can cause damage to the furnace structure.
Solution: Stop using and contact the manufacturer for repair. It may be necessary to replace the furnace.
abnormal noise
Reason: Unbalanced fan, damaged or unbalanced fan impeller; The base is unstable, the base of the furnace is uneven or not firmly fixed.
Solution: Check the integrity of the fan impeller and rebalance or replace it if necessary; Ensure that the equipment is securely placed and adjusted for movement as needed.
leakage of electricity
Reason: Damaged wires and insulation layer causing current leakage.
Solution: Check if the wires are damaged and promptly repair or replace them.
Decreased insulation performance
Reason: Damaged furnace lining, aging or cracking of refractory materials.
Solution: Check if the furnace lining is damaged and repair or replace it if necessary.