What are the reasons for refrigeration failure in refrigerated trucks?
3 Answers
Here are the reasons for refrigeration failure in refrigerated trucks: Refrigeration unit pipeline leakage: For units that use Freon, this issue is relatively common because Freon circulates in a nearly sealed pipeline and does not naturally deplete. If there is leakage during Freon refilling, methods like pressure testing must be used to detect or repair it promptly. Refrigeration unit compressor failure: Overheating of the refrigeration unit compressor can cause the protector to fail. If the unit itself is functioning properly, the compressor may already be damaged. The reason for refrigeration unit pipeline blockage could be incomplete vacuum extraction or moisture causing ice blockage.
I remember that time when the refrigerated truck suddenly stopped cooling, not only delaying the delivery but also spoiling a bunch of fresh goods. Thinking carefully about the reasons, it was most likely due to refrigerant leakage, just like a home refrigerator where the pipes age or connections loosen over time. Another possibility is a compressor issue, where it hums but doesn't output cold air; a broken fan can lead to poor heat dissipation, and a condenser clogged with dust might also hinder cooling. Electrical problems like blown fuses or control panel failures can cause the system to shut down. Regularly check the dashboard display—if the temperature doesn't drop, try restarting the system, but in severe cases, head straight to a repair station to avoid worsening the issue. Safety first. Additionally, unstable voltage or insufficient battery power can also affect cooling efficiency, especially in older refrigerated trucks, so pay extra attention to this. Regular maintenance can prevent these problems—don't wait for a major breakdown to take action.
I've been thinking about refrigerated trucks not cooling properly, which is quite common, and I've encountered it a few times. The core issue lies with the refrigeration system, such as insufficient refrigerant or tiny leaks that are hard to spot with the naked eye. The compressor might be seized or the belt broken, resulting in no sound or abnormal vibrations during operation. Poor fan performance can lead to inadequate heat dissipation, especially in summer when the condenser is clogged with dust, affecting efficiency. Control circuit failures are also frequent—issues like poor relay contact, faulty temperature sensors, or blown fuses can cause the system to misjudge and fail to start cooling. On the electrical side, check if the voltage is stable; insufficient power supply from the generator can also cause problems. When troubleshooting, start with the basics: check the panel for error codes, feel the temperature of the refrigerant pipes, and listen for compressor sounds. If you can't fix it, send it for repair as soon as possible to avoid cargo loss and wasted time. For daily use, pay attention to cleaning the air filters and running system self-checks.
