Compressor Cylinder overheating is one of the frequent abnormal conditions of industrial refrigeration compressors during long-term operation. Continuous high temperature will accelerate the aging of internal sealing parts, reduce refrigerant compression efficiency, and even cause shutdown protection of the entire cold storage refrigeration system. Accurate cause identification and standardized parameter adjustment can effectively eliminate overheating faults and restore stable unit operation.

Most cylinder overheating failures are closely related to abnormal operating parameters and poor heat dissipation conditions. Under standard industrial working conditions, the normal operating temperature of the compressor cylinder body is controlled between 45℃ and 75℃. If the temperature continuously exceeds 85℃, it indicates abnormal system operation. Common inducements include excessive discharge pressure, insufficient lubricating oil flow, blocked heat dissipation components, and mismatched superheat parameters.

In terms of fault inspection, operators should first check the system pressure parameters. Long-term operation with discharge pressure higher than 1.6MPa will increase cylinder compression load and generate excessive friction heat. Secondly, inspect the lubrication system: blocked oil filters or insufficient oil supply will weaken the cooling and lubricating effect of ISO VG46 refrigeration oil, leading to direct friction and temperature rise between cylinder walls and moving parts. In addition, dust accumulation on condenser fins and blocked ventilation channels will reduce heat exchange efficiency, causing heat accumulation inside the compressor cylinder.

For targeted adjustment and troubleshooting, multiple standardized measures can be adopted. First, calibrate the system pressure to ensure the discharge pressure operates within the standard range of 1.2–1.5MPa to avoid overloaded compression. Second, replace aging filter elements and replenish qualified lubricating oil to guarantee continuous and stable oil circulation. Third, clean condenser surface dirt regularly to restore original heat dissipation efficiency. For systems with abnormal superheat, adjust the expansion valve opening to control superheat between 5K and 8K, preventing high exhaust temperature caused by insufficient refrigerant circulating volume.

Timely troubleshooting of cylinder overheating can avoid permanent damage to compressor cylinder components. Standardized parameter matching and daily inspection habits greatly improve the operational stability and service life of industrial refrigeration and cold storage equipment.