High exhaust temperature of screw air compressor

screw air compressor set the maximum exhaust temperature of 120 degrees Celsius. When it reaches 110 degrees, the temperature warning light starts to shine and alarm, and it will actively stop when it exceeds 120 degrees. Temperature is too high shutdown generally have the following reasons:

1. Poor ambient ventilation and heat dissipation. There are three main conditions in which the surrounding environment of the screw air compressor affects heat dissipation: first, it is too close to wall-like obstacles; Second, there are other heat sources near the screw air compressor; third, the front door and side door of the screw air compressor are opened during operation, and the electric fan cannot form strong airflow.

2. Screw air compressor electric fan blade cracking or lax. When the fan blade is cracked, the air compressor will stop voluntarily due to the high temperature after working for 5 minutes, and it will extremely announce abnormal sound. If the fan blade is broken, the cooling air volume will decrease and then affect the heat dissipation. At this moment, the electric fan blade should be replaced or adjusted.

3. Screw air compressor oil filter is too dirty. When it is too dirty, the resistance oil cannot enter the air compressor according to the normal flow rate, and the air compressor will heat up quickly due to the lack of cooling and lubricating oil. When the inlet and outlet oil pressure difference exceeds 0. The filter element needs to be replaced at 18MPa.

4. Cooling oil level is too low. When the cold machine is checked, the oil level is lower than the lower end of the inspection tube should be compensated immediately. Work below the center of the oil should be made up.

5. Low cooling oil number or poor oil quality. The screw air compressor uses the special air compressor oil from the manufacturer. When other low-grade or residual oil is used, the viscosity and specific heat will not meet the specifications, resulting in excessive temperature.

6. The radiator is blocked. When there is a lot of dust in the environment around the screw air compressor, a layer of dust or sludge will adhere to the surface of the radiator after long-term work, and the internal copper pipe will be blocked by the accumulation of grease, which will then affect the heat dissipation effect. The exterior of the air cooler shall be cleaned with a dust blowing gun. If the air cooler is not clean, it shall be cleaned with a high-pressure water gun after removal, and the interior shall be cleaned with special liquid medicine. If it is a water cooler, then it is necessary to use a water pump, circulating liquid to clean.

7. The oil cut-off valve of screw air compressor fails (only on large models). There is an oil cut-off valve between the oil filter and the air compressor. When the oil cut-off valve cannot be opened, the temperature of the screw air compressor rises rapidly after starting because there is no oil lubrication and cooling, and it will stop voluntarily in about a few seconds.

8. The filter element of oil and gas separator is too dirty. When it is too dirty, the oil due to excessive resistance and affect the cycle, the formation of overheating shutdown, it should be cleaned or replaced