Common problems and solutions of vertical tube furnaces

As a heat treatment equipment, vertical tube furnaces may encounter some common faults during use. The following are some common faults and their solutions:

No power display on the instrument: This may be due to power not being connected, power cord failure, or internal fuse blown. The solution is to check if the power socket, power switch, and power cord are functioning properly and confirm if there is power supply. If it is a fuse problem, it needs to be checked and replaced with a suitable fuse after power off.
The temperature inside the furnace does not rise: it may be due to damage to the heating element, malfunction of the temperature controller, or abnormal power supply. The heating element should be checked for integrity, and if damaged, it should be replaced; Check the temperature controller settings and output status, and repair or replace the temperature controller if necessary; Confirm whether the power supply voltage is stable and can meet the equipment requirements.
The set temperature does not match the temperature inside the furnace: it may be due to incorrect thermocouple wiring, sensor failure, or misalignment of the temperature control system. Check if the positive and negative pole connections of the thermocouple are correct. If they are reversed, correct them; If the thermocouple or sensor fails, replace it with a new one; If there is a problem with the temperature controller itself, it needs to be calibrated or replaced.
The instrument output is normal but the OUT indicator light does not flash: it may be a main circuit fault, such as a damaged thyristor, faulty indicator light, or a broken heating resistor wire. The thyristor should be checked for normal operation and replaced if damaged; Check if the indicator light is damaged and replace it if necessary; Check if the heating resistance wire is intact, and replace it if there is an open circuit.

A commonly used vertical tube furnace

The hardware part of the furnace may also malfunction, and there are generally the following common faults and solutions:
Temperature control failure: The furnace cannot reach the set temperature or has significant temperature fluctuations.
Solution:
Check if the temperature sensor is damaged or loose, and ensure that the sensor has good contact.
Check if the temperature controller is set correctly and adjust parameters to improve stability.
Check if the heating element is working properly and replace any damaged heating elements if necessary.

Heating element damage: The heating element is broken or damaged.
Solution:
Stop using the furnace and check if the heating elements are damaged or broken.
If necessary, replace damaged heating elements and ensure proper installation to prevent secondary damage.

Poor sealing of furnace chamber: Poor sealing of furnace chamber leads to a decrease in vacuum degree or ineffective atmosphere control.
Solution:
Check if the sealing components such as the furnace door and sealing ring are intact. If there is wear or aging, replace them in a timely manner.
Check if the seal is installed correctly and adjust the seal to ensure the sealing effect.

Pipeline blockage: blockage or accumulation of debris inside the pipeline.
Solution:
Regularly clean pipelines to prevent accumulation of debris.
If severe blockage occurs, appropriate cleaning tools can be used for cleaning.

Control system malfunction: The control system has malfunctioned and is unable to control the furnace properly.
Solution:
Restart the control system and check if the power supply and connection lines are functioning properly.
If necessary, contact professional technicians for maintenance or replacement of the control system.

Furnace body damage: Damage or deformation occurs inside or outside the furnace body.
Solution:
For minor damage, repair measures such as welding, grinding, etc. can be taken.
For severe damage or deformation, it may be necessary to replace the entire furnace body or rebuild part of the structure.

Vacuum system malfunction: The vacuum system cannot operate normally, affecting the vacuum degree.
Solution:
Check if the vacuum pump, valves, pipelines, and other components are operating properly. If there are any abnormalities, repair or replace them in a timely manner.
Check the vacuum degree monitoring system to ensure accurate measurement of vacuum degree.

Industrial type synthesis gas pyrolysis vertical tube furnace

In practical application, the failure of tube furnaces may also be affected by various other factors. If the problem is not resolved, please contact the equipment supplier or manufacturer in a timely manner for further technical support and services. Before carrying out any maintenance operations, please ensure that you have professional knowledge and take appropriate safety measures.Click to learn more tube furnace! Or click on online customer service to learn more about product information!