ABSTRACT
Being able to design a pneumatic system, select the correct components, and deliver a complete system is only a small portion of the design responsibility. The useful life of a machine is directly related to its maintainability. As an example, most air valves are reliable, rugged, and dependable pneumatic devices. They find use where high-speed, repetitive operations are needed, such as on automatic production equipment. The service life and perform176ance of the air valve are based on proper application and preventive maintenance. However, malfunctions and failures do occur. When a pneumatic circuit malfunctions, the thoughtful troubleshooter first seeks to study the circuit diagram schematic normally provided by the machine designer or builder. If the problem appears to be caused by a specific component, the maintenance instructions for that component must be referred to and followed in putting the unit back in working order.
