Inspect tubes as often as practical and clean them as necessary, using an approved method. Use rubber plugs and an air lance or a water lance to remove foreign deposits. You must keep the tube surfaces clear of particles of foreign matter. However, you must not destroy the thin protective coating on the inner surfaces of the tubes. If the tubes become badly corroded, replace them.
Replacement avoids the possibility of losing the charge and admitting salt water to the system.
The use of air-cooled condensers eliminates the necessity for circulating water pumps and piping. Keep the exterior surface of the tubes and the fins on an air-cooled condenser free of dirt or any matter that might obstruct heat flow and air circulation. The finned surface should be brushed clean with a stiff bristle brush as often as necessary. When installations are exposed to salt spray and rain through open doors or hatches, you should take steps to minimize corrosion of the exterior surfaces. To test for leaky condenser tubes, drain the waterside of the condenser.