Such problems may seem minor, but they are major when it comes to efficiency. Proper training can help maintenance personnel recognize and correct poor operating practices, and developing maintenance problems. Chiller logs An essential diagnostic tool for chiller systems is the operating log. Most chiller problems develop so slowly over time that unless someone is specifically looking for them, they will go unnoticed. By recording and reviewing operating data on a regular basis, technicians can establish chiller performance trends that reveal the chiller's health and efficiency.
Many facilities maintain logs, but too few review data in the logs regularly.
For example, trend data may clearly show that air is entering the system, refrigerant is leaking out, or bearings are wearing, but unless someone reviews the log's data, the first indication of a problem either will be the chiller's inability to meet the building's cooling load on a hot day or the outright failure of the chiller. An inspection schedule is important to ensure a chiller's health and operating efficiency. Inspections that are performed daily, weekly, monthly and annually will identify minor problems long before they develop into larger, more costly ones. They also will help identify specific maintenance activities that must be performed to ensure the chiller is operating efficiently. Some tasks, such looking for leaking oil, water, or refrigerant can be performed while the chiller is operating.