But microprocessor-control systems have been one of the most effective means of limiting emissions. By constantly monitoring flue gases, the systems can quickly detect and correct operations to bring the boiler in compliance with the stricter standards. Improved maintenance Early detection is an important factor in reducing maintenance costs and increasing system life in any building mechanical system because it allows operators to take corrective action while the problem is relatively small. Early detection of problems also allows operators to schedule maintenance shutdowns, rather than having a failure occur and force an unscheduled shutdown. Microprocessor-based controls give operators the ability to more closely and accurately monitor boiler operation, making it easier for them to detect problems as they develop.
Several factors contribute to a control system that is maintenance friendly.
Conventional control systems typically monitor no more than 10 different operating parameters. Microprocessor-based systems monitor many more, with most monitoring at least 80 for each boiler. By monitoring a much larger number of operating parameters, it is easier for the system to detect conditions that might cause or result from boiler maintenance problems. Besides monitoring more elements of a boiler's operation, the system also records and stores data that system operators can access. They can analyze trends in boiler operation by reviewing stored data, and they can make comparisons in operating performance and efficiency, giving a good overall indication of the boiler's health.