How to Fix and Prevent Heating Tube Failure in Cast Film Calendering Mold Temperature Controllers？

Cast film calendering mold temperature controller is also called cast film calendering oil heater and cast film calendering electric heating oil furnace. It is a special mold temperature controller for cast film plastic thermoforming. Nowadays, in the process of temperature-controlled cast film forming, more and more customers tend to choose mold temperature controllers.

As a consumable part of the mold temperature controller, the heating tube is used to heat the heat transfer oil to ensure that the heat transfer oil can be heated to the preset temperature within a unit time. The selection of heating tubes mainly considers its power. The greater the heating power, the faster the heating speed. Of course, the higher the heating power, the better. The higher the heating power, the larger the specifications of cables and electrical components are required, which increases the cost of the mold temperature controller.

How to check whether the heating tube of the cast film calendering mold temperature controller is burned out?

Since the mold temperature controller uses electric heating tubes, if there is a problem with the quality of the heating tubes, or the mold temperature controller manufacturer's design is unreasonable, the heating tubes will burn out and the mold temperature controller will not be able to heat. For the burnout of the mold temperature controller heating tube, we can use a multimeter to detect the resistance value and current value. If the data is abnormal, it is possible that the mold temperature controller heating tube is burnt out and needs to be replaced.

If the cast film calendering mold temperature controller heating tube is burnt out, what should we do at this time? The following are the steps and suggestions for solving the problem of heating tube burnout:

1. Shut down and cut off the power

Immediately stop the equipment operation and disconnect the power supply to ensure safe operation. Turn off the heating and cooling system of the mold temperature controller to prevent further damage.

2. Check the cause of the burnout of the heating tube

For the water mold temperature controller, it may be due to insufficient water inlet pressure and insufficient external water entering, causing the water-type mold temperature controller to be short of water. At this time, in order to protect the heating tube and the circulation pump, the mold temperature controller will alarm. Another reason may be that the pressure controller fails and cannot detect the system pressure normally, or a false alarm occurs. At this time, it is necessary to measure the current signal of the pressure controller.

3. Replace the heating tube

• Choose a suitable heating tube: According to the model and specifications of the mold temperature controller, choose a heating tube with the same power, size and material. Ensure that the temperature range and corrosion resistance of the heating tube meet the process requirements.
• Install a new heating tube: Install the heating tube correctly according to the equipment manual or the guidance of professionals.
• Ensure that the wiring of the heating tube is firm to avoid poor contact or short circuit.
• Test operation: After replacement, first perform a no-load test to check whether the heating tube is working properly. Gradually increase the temperature and observe whether the temperature control is stable.

The heating tubes of the cast film forming mold temperature controller equipped by Hengde for each customer are of high quality. Customers do not need to worry about their quality during use. If you buy a mold temperature controller from other manufacturers, remember to pay attention to the quality of the heating tube.

4. Check and repair other related components

• Check the temperature control system: confirm whether the temperature sensor, controller and relay are working properly. Calibrate or replace the temperature control element if necessary.
• Check the circulation system: ensure that the heat transfer medium is sufficient and the circulation pump is operating normally.
• Clean the filter or pipe to avoid blockage.
• Check the power supply and circuit: check whether the voltage is stable and the wiring is firm.
• Install a voltage stabilizer or replace damaged electrical components if necessary.

5. Preventive measures

In order to avoid the heating tube from burning out again, the following preventive measures can be taken:

• Regular maintenance: Regularly check and clean the equipment pipeline. According to the usage, regularly clean the pipeline scale, carbon deposits, and impurities to avoid scale and carbon deposits blocking the pipeline and causing the heating tube to burn out, thereby affecting the service life of the heating tube.
• Monitoring operating parameters: Real-time monitoring of the temperature and current of the heating tube, and timely handling of abnormalities.
• Use high-quality heating tubes: Choose high-temperature and corrosion-resistant high-quality heating tubes to extend the service life.
• Optimize process parameters: Avoid long-term overload operation and set the heating temperature and time reasonably.

6. Seek professional support

If the problem is complicated or cannot be solved by yourself, it is recommended to contact the equipment manufacturer or professional maintenance personnel for inspection and maintenance to ensure the safe and reliable operation of the equipment.

Through the above steps, the problem of burnout of the heating tube of the cast film calendering mold temperature controller can be effectively solved, and preventive measures can be taken to reduce the occurrence of similar failures and ensure the continuity of production and the stability of product quality. Hengde Company escorts your cast film calendering mold temperature controller.

Choose Hengde，Choose Perfect Mold Temperature Controller！