Starting Up Cooling Tower Systems

large, outdoor cooling tower system

Why can’t we just fill up the tower and start the chiller?

All the debris in the tower from the previous season could be washed into the strainers and cause major pump problems. Each tower that is shut down for the winter season should be thoroughly cleaned before restarting for the current season. The tower should also be disinfected during the cleaning.

What Are Best Practices For Starting Cooling Tower Systems?

  • Review the water treatment controller for proper operation. Initiate each relay to insure proper operation of each relay. Check the operation of the flow switch (check with paddle in hand) and clean the probes. Calibrate the sensors in a separate container of city water. Do not calibrate with system water from the flow line as this line may contain some chemical which could cause a false conductivity reading.
  • Check the output of each pump, prime each pump if necessary. Check the level of chemical in each batch. During the offseason, the water in the batch will tend to evaporate. That will cause the chemical to be abnormally concentrated and may also cause the chemical to become far more viscous than normal. You may have to add a minimal amount of water in order to make the chemical easily “pump-able”.
  • Check all tubing for cracks. Repair/replace if necessary.
  • Read the water meter for cooling tower makeup.

Learn More About Our Cooling Tower Services

matt welsh
Matt Welsh
Vice President, Water Consultant at | Website | + posts

Matt Welsh is the Vice President and Water Consultant at Chardon Labs.  He helps consult a wide range of customers utilizing various methods of water treatment, from chemical to chemical-free approaches, large and small applications, and across a wide range of geographical influences.  With 20 years of water treatment experience, including a wide range of troubleshooting and service in potable water and non-potable HVAC and industrial applications, he is an expert in water treatment chemistry for cooling towers, boilers, and closed-loop systems.