Charge Air Cooler ultrasonic cleaning and repairing

The charge air coolers of the main and auxiliary engines have to be repaired/maintained regularly or because of water/air leaks. In such cases, the charge air coolers are removed and the zinc protectors, if any, in the covers are replaced, the coolers are cleaned by ultrasonic means to avoid chemical hazardous on the fins and tubes, the covers are re-assembled with new seals, pressure tests are conducted and installed on the engine.