When storing pneumatic components, it is important that the conditions are ideal for the grease and rubber parts that commonly used in their construction. These parts are most susceptible to deterioration over time and can greatly affect the functionality of pneumatic systems. Implement these storage tips to minimize deterioration and to prolong the life of your pneumatics.
Temperature, humidity, and light exposure should be considered in the storage placement of any pneumatic components. Keep storage temperatures as consistent as possible between 14 and 104 degrees Fahrenheit. Inconsistent temperatures can cause condensation which could contaminate and cause damage. New products should not be adversely affected by exposures to below freezing temperatures, but used products can have water contamination which would expand and damage the products. If storing used products in below-freezing conditions cannot be avoided, make sure all components have been properly conditioned and that no water remains. To lessen water contamination risk, the humidity of the storage area should be kept at or less than 65%. Exposure to sunlight and UV rays should be avoided during storage as these can break down any elastomers in the stored components.
Pneumatic components should be conditioned and stored free of contaminates. Water, chemicals, and some surrounding atmospheric conditions can cause corrosion. Take care to keep the storage area free of chemical fumes, water or salt water, organic solvents, ozone, or high concentrations of gases, such as oxygen. Products should also be clean of these corrosive materials before being placed into storage.
Proper preparation of used products or machines for storage is the best way to reduce corrosion and deterioration. Carefully check and let out any remaining pressure in the system. A good indicator of water contaminants in the system is the presence of water in the filter bowls. If water is found, empty the bowls and take any necessary steps to thoroughly clean and dry the rest of the components. A dry air purge can help clear out any water or other contaminates in the system. Before storage, empty lubricator bowls and secure any movable parts, so they do not move or get lost in storage or transit. Wrapping the products and storing them inside boxes or crates is recommended to keep damage from occurring in storage and in transit. A desiccant or moisture absorbing agent should be used inside the storage container if the humidity might get above 65%.
Always consult the manufacturer’s guidelines for proper care and storage for your products. Even under proper storage conditions, some components will still degrade over time. If the projected storage time is more than two years, consider selling it and replacing it later to avoid having to fix parts that deteriorated over time. For more tips, including tips on returning an item to service after storage, read the full article: Storage of Pneumatic & Vacuum Components from Richard F. Bullers at SMC Corporation of America.