How to clean the interior of the generator set radiator

Generators need to be properly maintained in a certain period after the operation, the radiator generators would need to clean up, then the internal heat sink how to clean it? Consider the following description.

Remove the radiator's internal water and disconnect the outside of the radiator. Pour the acid solution into the radiator and allow it to stand for a while before removing it. Pour the alkaline solution again and leave it for a while before removing it.

Rinse inside the radiator with water and repeat several times. Check whether the radiator is leaking. If it leaks, repair it in time.

Reinstall the radiator on the diesel generator set . Warm reminder, don't forget to add anti-rust agent inside the radiator.