The core of routine maintenance for refrigeration units lies in "regular inspection, timely cleaning, and standardized operation." Systematic inspection and maintenance can significantly extend equipment lifespan, reduce failure rates, and improve energy efficiency. Based on multiple technical documents, the following are scientific and actionable key points for routine maintenance.
Operating Parameter Monitoring: Record key data such as the inlet and outlet water temperature and pressure of the evaporator and condenser, oil pressure, oil temperature, and oil level.
The oil level should be maintained between 1/2 and 2/3 of the way through the sight glass.
Observe the refrigerant sight glass: No bubbles indicate sufficient refrigerant; if the color turns pink or colorless, water may have entered the system, requiring replacement of the dryer.
Sound and Vibration Detection
Listen to the compressor, fan, and water pump for any abnormal knocking sounds, friction sounds, or severe vibrations.
If the vibration value exceeds 4.5 mm/s, immediately check for bearing, piping fixation, or motor imbalance issues.
Visual Inspection and Leak Check
Inspect the unit surface, pipe connections, and shaft seals for oil stains (lubricating oil seepage is often accompanied by refrigerant leakage).
Use an electronic leak detector or soapy water to check suspicious connections to prevent refrigerant loss.