According to a PECI study on existing building commissioning, air handlers typically have more performance issues than any other type of equipment. There are many aspects to maintain on an air handler, and this maintenance can easily be overlooked or deferred. The Building Owner and Managers Association's (BOMA's) recently updated preventive maintenance guide, "Preventive Maintenance: Best Practices to Maintain Efficient and Sustainable Buildings," suggests preventive maintenance tasks for air handlers, which include quarterly and semiannual preventive maintenance tasks for maintaining the performance of airside economizer systems. Here are some common maintenance-related issues and periodic tests that can be done to address and avoid performance problems with air-handling units.
>>> on airside economizer fundamentals, methods of control, and test procedures, consult the Functional Testing and Design Guides at www.peci.org/ftguide. Always consider the effects on other systems and include necessary precautions in any test procedures.
Take Good Care of Airside Economizers to Realize Free Cooling Benefits
Common Problems in Airside Economizer Design and Construction
Fixes for Common Airside Economizer Operational Problems
Fixes for Common Issues With Airside Economizers and Control Systems