Ongoing Chiller Maintenance

Maximum efficiency and cost savings can be achieved only through continuous and comprehensive chiller maintenance. This maintenance can be both preventive (regularly scheduled based on best practices) and predictive (based on sensor data from within the system, which is an early warning indicator of an impending breakdown.)

Preventive Maintenance

With preventive maintenance, you’ll be able to anticipate the following tasks as required at regular intervals (as recommended by your chiller manufacturer):

  • Inspection and cleaning of condenser coils in air-cooled systems. Coils should be clog-free allowing air to pass freely;
  • Inspection and replacement of damaged or worn fans, fan arrays, or fan components for air-cooled systems;
  • Ensure proper water flow and prevent fouling or scaling in water-cooled systems by flushing condenser water loops;
  • Water treatment–including glycol dosing–to keep water-cooled systems free from bacterial growth;
  • Leak testing will help you safeguard against refrigerant escaping from tubes and ensure that there aren’t any water leaks in water-cooled systems or air leaks in air-cooled systems.

Predictive Maintenance

Predictive maintenance can help reduce the risk of a system’s otherwise unanticipated catastrophic failure and improve efficiency by monitoring every component of the chiller from the coolers to the refrigerant tubes.

  • Monitored fan efficiency. Fans operating below optimal speeds can cause loss of efficiency for the air cooler system.
  • Monitored water usage. Increased evaporation at tower level, causing water usage to rise, is a sign of poor water cooler efficiency.
  • Monitored refrigerant levels. A proper refrigerant charge can positively impact energy efficiency by reducing cooling costs up to 5-10%.

The future of HVAC and chiller optimization hinges on the Internet of Things (IoT), which can track, analyze and report data that enables predictive preventive maintenance. Building engineers can visualize critical HVAC assets in real-time and actual operating conditions can be determined based on an analysis of total power consumption and kW/ton efficiency.  

Investing in IoT capability can be a significant advantage in chiller maintenance and extension of chiller lifespan extension. Keeping every component operating at peak performance means reducing HVAC energy consumption costs while extending the number of years between complete chiller replacements.  

Are you looking to maximize your HVAC chiller? Therma’s HVAC experts are ready to help. Get in touch today.