ABSTRACT
Long-time storage The heat exchanger is normally shipped with its inside surfaces coated with rust-preventive oil. The rust-preventive coating normally stays active for a period of 2-3 months in a dry room. If the heat exchanger is to be stored longer, open its ports and apply the same type of rust-preventive oil where necessary every 2 or 3 months. If the storage is for more than a year, test the heat exchanger at its maximum service pressure and make sure it is in working order prior to operation.
