Reasons for water or oil leakage faults in the oil cooler

During the operation of the unit, the oil cooler manufacturer's oil cooler may experience water or oil leakage from the bottom cover, especially during the startup or shutdown of the unit. The faults occur more frequently. Now let's tell you the reasons.
1) During the startup or shutdown of the unit, pressure fluctuations often occur on the oil and water sides of the oil cooler, causing the O-ring to move and cause leakage.
2) During the installation of the oil cooler unit, if there is an eccentric installation inside the oil cooler, it will cause abnormal clearance of the O-ring seal. During operation, slight pressure fluctuations (oil side, water side) can cause leakage.
3) During each oil cooler maintenance process, when replacing the O-ring seal, due to the narrow position of the bottom end cover, installation is inconvenient during maintenance, and often the O-ring is crushed by the copper bed, resulting in leakage. After each maintenance, the probability of leakage on the water side is higher than that on the oil side, which further proves that the current design is not convenient for maintenance and ensures the quality of maintenance.
The isolation between oil and water in the oil cooler, as well as the leakage of oil and water, all rely on two O-ring seals. If the two O-rings are damaged or displaced, resulting in a change in clearance, it will inevitably cause leakage. Because the sealing surface of the O-ring is on the left and right sides, rather than the traditional upper and lower sides, increasing the tightening force of the flange bolts cannot reduce the leakage amount in case of leakage. After analysis, the above are the reasons that can easily cause changes in the clearance and damage of the O-ring seal.