Why is it necessary to pump oil throughout the system after cleaning?

Pumping oil throughout the system after cleaning is essential to prevent corrosion and blockages. This step ensures that any residual moisture or cleaning agents are effectively displaced by the oil, which acts as a protective barrier. Oil helps to coat the internal surfaces, inhibiting rust formation and deterioration caused by exposure to water and air. Additionally, it can help prevent any potential sedimentation or buildup that might occur if the system was left dry, which could ultimately cause blockages. Protecting the system from corrosion not only prolongs its life but also ensures that it functions optimally in future applications.