Daily maintenance of refrigerated trucks must cover core components such as the refrigeration unit, the cargo box, and the powertrain. Proper maintenance practices extend the vehicle's lifespan and prevent cargo damage during cold chain transport.
Refrigeration Unit Maintenance
Proper Start-up/Shutdown Sequence: Start the vehicle engine before turning on the refrigeration unit; turn off the refrigeration unit before shutting down the engine.
Belt and Heat Dissipation Checks: Regularly check the compressor belt tension and keep a spare belt of the same model on board; promptly clean dust and debris from the condenser fins to prevent poor heat dissipation.
Maintenance During Idle Periods: If the unit is not used for an extended period, run it for 3–5 minutes every 10 days or so; after snowfall, clear accumulated snow from the external fan and manually rotate the fan blades before starting the unit.
Refrigeration System Inspection: Regularly check refrigerant lines for leaks and defrost the evaporator promptly if heavy frost accumulates to ensure cooling efficiency.
Insulated Cargo Box Maintenance
Seal and Scratch Checks: Regularly inspect door seals and replace them if they are aged or damaged; avoid scraping the exterior of the cargo box to prevent damage to the insulation layer and subsequent cold air leakage.
Cleaning and Disinfection: Clean the interior with a neutral detergent after every trip to remove debris and odors, preventing bacterial growth that could contaminate cargo; keep floor drainage holes clear to prevent water accumulation and blockages.
Proper Loading Procedures: Leave ventilation gaps between the cargo and the box walls/ceiling during loading; do not block air intake or exhaust vents to ensure smooth cold air circulation.