It is summer, and at this time, the high temperature faults of air compressors are frequent. This article summarizes various possible causes of high temperature.
In the previous article, we talked about the problem of excessive temperature of the air compressor in summer. There are many reasons, so we will continue to discuss this issue in this article.
9. The air-cooled unit mainly checks the inlet and outlet oil temperature
Is the difference about 10 degrees. If it is less than this value, check whether the fins on the surface of the radiator are dirty and clogged. If it is dirty, use clean air to dust the surface of the radiator and check whether the fins of the radiator are corroded. If the corrosion is severe, it is necessary to consider replacing the radiator assembly. Check whether the internal pipes are dirty or blocked. If so, you can use the circulating pump to circulate a certain amount of acidic liquid to clean it. Be sure to pay attention to the concentration of the liquid and the cycle time to avoid the radiator from being pierced due to the corrosion of the liquid.
10. Problems with the exhaust ducts installed by customers of air-cooled models.
There are exhaust ducts with too small wind surface, too long exhaust ducts, too many bends in the middle of the exhaust ducts, too long middle bends and most of the exhaust fans are not installed, and the flow rate of the exhaust fans is smaller than that of the original cooling fan of the air compressor.
11. The reading of the temperature sensor is not accurate.
If the temperature sensor is completely disconnected, the device will alarm and stop, and display that the sensor is abnormal. If the work is bad, sometimes good and sometimes bad, it is much more hidden, and it is more difficult to check. It is better to use the substitution method to eliminate it.
12. The nose problem.
This general air compressor head bearing needs to be replaced every 20,000-24,000 hours, because the gap and balance of the air compressor are all positioned by the bearing. If the wear of the bearing increases, it will cause direct friction on the air compressor head , the heat increases, resulting in high temperature of the air compressor, and it is more likely that the main engine will lock up until it is scrapped.
13. The specifications of lubricating oil are incorrect or the quality is poor.
The lubricating oil of the screw machine generally has strict requirements and cannot be substituted at will. The requirements in the equipment instruction manual should prevail.
14. The air filter is clogged.
The clogging of the air filter will cause the load of the air compressor to be too large, and it will be in a loaded state for a long time, which will cause high temperature. It can be checked or replaced according to the alarm signal of the differential pressure switch. Generally, the first problem caused by the blockage of the air filter is the reduction of gas production, and the high temperature of the air compressor is the secondary performance.
15. The system pressure is too high.
The system pressure is generally set at the factory. If it is really necessary to adjust, the rated gas production pressure marked on the equipment nameplate should be taken as the upper limit. If the adjustment is too high, it will inevitably cause overtemperature and overcurrent overload due to the increase in the load of the machine. This is also the same as the previous reason. The high temperature of the air compressor is a secondary manifestation. The main manifestation of this reason is that the current of the air compressor motor increases, and the air compressor shuts down for protection.
16. The oil and gas separator is blocked.
The blockage of the oil and gas separator will cause the internal pressure to be too high, which will cause many problems, and high temperature is one of them. This is also the same as the first two reasons. The clogging of the oil-gas separator is mainly manifested by high internal pressure.
The above are the possible high temperature causes of some screw air compressors summarized, for reference only.
Post time: Jun-12-2023
