Charge air cooler(Inter cooler ) chemical treatment process


After running a certain period inter-cooler get oily and dusty.Sometime the air passage get blocked.The heat transfer rate reduced and increase in exhaust temperature causes great distraction of engine(read about it). Charge air inter cooler chemical treatment process includes not only the treatment via chemical but also some process carried out before and after chemical treatment.

Brief Discussion
After removing the inter-cooler from the engine the compressed air used to removed outside dust.Metal covers(both sides) for water inlet and outlet are removed.After that the cooler submerged under chemical mixed water(ACC-9 widely used).

Treatment process consist of few steps.

Leak test (one end)
Leak test (other end)
  • Removing dust,Carbon deposits and other impurities with the help of compressed air
  • Run the tube leakage test process
  • Submerging the cooler in Chemical mixed water
"If the condition become very bad then pour degreaseer on the cooler and keep it in dry state 4 ti 5 hours" 
  • Attached heater and maintain the temperature about 45 degree celsius
  • Provide compressed air line under the cooler
  • Keep in this condition about 12 hours(sometime vary)
  • Draw it from water and spray normal water until all the impurities gone
  • Provide compressed air to remove water particle from the cooler
"During compressed air and water spraying, always spray such a way that fins are not bended"
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