How to Check Whether the Refrigerant in Truck Refrigeration Unit Is Leaking?

Jul 11,2017

If the refrigerant of truck cooler refrigeration unit leakage happens during transporting goods, that will cause unexpected loss, which will not only pollute the environment, but also add the transporting expenses and time. So how to check whether the refrigerant in
truck refrigeration unit on reefer car seems very important. And now there are several common and practical methods to check it. 

Method 1: Detecting refrigerant leak of truck cooler refrigeration unit by visual

If you find somewhere have oil stains, and then there maybe is leak point. This checking way is simple and convenient, without cost. But the biggest flaw is you can not find the definite leak location unless there is a big leak point in truck refrigeration unit on reefer car and the leaked liquid is colored. 
 

Method 2: Detecting refrigerant leak of truck refrigeration unit on reefer car  by Soapy Water

Filling 10-20kgcm2 nitrogen gas into the truck cooler refrigeration unit and then smearing the soapy water on each parts of the refrigerated car. If there is bubbling, and that is leak location. Also this way is transport refrigeration units repair usually used. While most times, people can not find the leak point due to their limited range of vision.

Method 3:Detecting refrigerant leak in transport refrigeration units by nitrogen water

Filling 10-20kgcm2 nitrogen gas into the truck cooler refrigeration unit and then putting the truck cooler refrigeration unit into the water. Where there is bubbling, there is leak point, which is similar with the checking leak by soapy water. Though the cost is low, there have obvious shortcomings. The water that used to detect leak is have an access to truck refrigeration unit on reefer car, which corrodes the components in truck cooler refrigeration unit. And the high pressure gas maybe causes great damage to the truck refrigeration unit on reefer car, which will more difficult to leak checking and then increase the cost in truck refrigeration unit repair.

The components of transport cooler refrigeration units
PHOTO: 
The main components of transport cooler refrigeration units

Method 4: Detecting refrigerant leak of truck cooler refrigeration unit by halogen lamp

Lighting the halogen lamp and holding the air pipe. When the pipe orifice close to truck refrigeration unit on reefer car, if the flame color becomes royal blue, that marks there have a great deal of refrigerant leakage. This checking way would produce flame, which is not only dangerous, but also the combination of refrigerant with flame would produce harmful gases. And it is not easy to locate the leak location, so very few people adopts this checking way.

Method 5: Detecting refrigerant leak in truck refrigeration unit on reefer car by gas differential pressure

You can use the gas pressure of truck cooler refrigeration unit differs inside and outside and then magnify the pressure difference through sensor, and then show it by figures, sounds or electronic signals. While this way can only tell us whether the refrigerant in transport cooler refrigeration unit is leaking and can not show us where the leak location is. 

Guchen Thermo C-200 Truck Chiller Units is designed for 2 -10 m³ small trucks. C-200 truck chiller units adopts split roof mounted way, which driven by vehicle engine. And with R134a refrigerant, C-200 Truck Chiller Units can keep the temperature of truck bodies inside at  -5℃ ~ +25℃. So it is especially suitable for pickup truck to deliver chilled fresh cargoes, such as fruits, vegetables, milk, yogurt, dairy products, seafood and so on. 

C-200 truck refrigeration units and stall on a pickup truck
PHOTO: Guchen Thermo C-200 truck refrigeration units install on a pickup truck

Also Guchen Thermo TR-450 transport refrigeration units for sale now. It is also driven by vehicle engine, which is widely apply for medium or big trucks with 16~22m³ volume size or 5.2 meter length truck body. And with R404a Eco-friendly refrigerant, TR-450 truck freezer units’ cooling capacity can up to 4100W, which keeps the temperature range from -18℃ to +30℃. And even in the high ambient temperature, it can perform perfectly. 

Guchen Thermo tr-450 truck refrigeration units

If you are interested in Guchen Thermo transport refrigeration systems or have the intention to buy truck cooler refrigeration unit, you can contact us. And if you have an opportunity to Zhengzhou, welcome to visit our factory and Guchen Thermo will give you the most professional suggestions and offer you the best purchasing experiences !