Inspection before starting a refrigerated truck
Before starting, check the body of the truck for damage, check that the rear doors are closed and that the door locks are working, check the condition of the walls, check that the number plates are not covered, check the tyre pressures, and see that the tyres are clean. Seals check. There is also the need to check for proper water temperature. The refrigeration unit is operating properly and make sure the exterior is not damaged.
In addition to the above basics that need to be checked, you also need to check the headlight function and that the turn signals are operational. Calibration of the temperature. Between the cargo inside the compartment, whether there is an air raid, the need to maintain proper airflow, and the integrity of the air chute.
Without problems you can open the truck normally and drive, if you encounter problems, it is best to solve them in time, otherwise, it will affect driving safety, as well as the cooling effect and temperature control. If the body is polluted and broken, it will lead to poor insulation performance.
The use and maintenance of refrigeration unit
Use of refrigeration unit
The refrigeration unit is equivalent to the ‘heart’ of the refrigerated truck. We need to use it according to the process.
First of all, we need to open the operation interface and then set the temperature we need, and then wait for the temperature to reach the preset. After that, we can reasonably load the goods. In order to achieve a better cooling effect, the goods need to reserve space for air flow. It is important to note that the accuracy of the preset temperature needs to be observed and the temperature monitoring equipment needs to be checked.
Maintenance of refrigeration unit
The refrigeration unit consists of an engine, compressor, condenser, and evaporator. The structure is complex and usually requires regular inspection of the refrigeration unit.
Generally, 600 hours or 2000 kilometres need to carry out maintenance, in order to avoid accidents, and to extend the service life.
Compressor maintenance: regularly check the refrigerated truck compressor operation, belt and bracket wear, also need to observe the belt tension is in the normal range, need to replace the dry bottle in time. Check whether each part is intact, whether the shell is loose and complete, and if it is destroyed needs timely repair or replacement.
Check the transmission part: you need to check the triangle belt tightness. If too tight will make the efficiency become low, also need to check the transmission and bearings have no signs of aging. You need to record the inspection data of each maintenance for long-term monitoring.
Condenser radiator maintenance: in order not to affect the cooling effect, you need to clean up the dust and dirt on the radiator in time to avoid clogging, and you need to avoid using high-pressure water for direct flushing to prevent damage to the radiator. Resulting in air can not be circulated, and need to defrost in a timely manner.
Maintenance of the compressor: if the compressor accessories are loose, you need to adjust them in time and check the air pressure value. Also, need to check whether the expansion valve is normal.
Refrigerant replenishment: refrigerant for the cooling effect plays a key role, you need to timely replenish the refrigerant, in case of long-distance transport, there is a shortage of refrigerant, you need to prevent the low-pressure alarm or the cold effect of this decline. Be sure to choose the refrigerant that meets the specifications, and need to wear protective gloves and goggles when replenishing.
Keep clean: Refrigeration equipment should be cleaned regularly, such as the evaporator, air ducts and operating FRP sandwich panels. This is to avoid malfunctioning due to dust and dirt. However, please remember not to use corrosive cleaning agents.
Precautions when loading goods
When loading goods, it is necessary to leave enough gap between the goods, otherwise, the air will not be able to circulate and the cooling effect will not be good. You also can’t stack the goods too high, otherwise it will block the air outlet at the top.
The air chute needs to be well protected, also known as ‘Air Chute’. Whenever cargo gets close, it can bump and start to affect performance, failing to distribute air to every area of the truck and preventing the back end from being cooled. The air chute needs to be monitored regularly for proper functioning and multiple temperature controls need to be used to monitor the internal temperature for stability.
Notes on the transport process
The transport process is often long, especially box refrigerated trucks, often intercity and intercontinental transport, in addition to the inspection before running. In the process of transport, you need to always observe the temperature in the warehouse, to prevent the temperature from fluctuating, resulting in damage to the goods due to high temperature. In the process of driving, try to choose a flat road, which can reduce truck bumps.
Places to check when parking
When parking, you need to park in a flat location with good ventilation, because the refrigeration unit of the truck needs to dissipate heat, and if the heat dissipation is unstable, it will lead to the inability to dissipate heat properly. When parking, you need to lock the door to prevent items from being stolen.
Regular maintenance
Regular maintenance of the truck is very important, not only to keep the exterior clean and free of pollution but also to keep the internal parts intact.
The chassis needs to be cleaned regularly, the dirt needs to be cleaned off, and the exterior of the insulated body needs to have some of the dirt cleaned off and kept tidy. With the passage of time, it must need to be cleaned.
The refrigerant in the refrigeration unit needs to be checked at regular intervals and needs to be replenished when it is insufficient.
Oil needs to be added to the refrigerated truck and air conditioning filters changed regularly.
