Safe Chemical Solutions Since 1942









Rydlyme Container Sizes


RYDLYME is available in various sizes:
Tanker or other bulk sizes available upon request.
  • 1-gallon
  • 4-gallon Case (1 gal. container x 4)
  • 5-gallon Jug
  • 30-gallon Drum
  • 55-gallon Drum
  • 330-gallon Tote

Cooling Tower Cleaning

Call for more information!


Cooling Tower Cleaning

What is a cooling tower's purpose?

The basic principal of a cooling tower is to cool the water that has picked up heat generated by equipment within the facility. The operation begins in the tower basin where the cooled water is pumped out into the facility and utilized for cooling the equipment on the tower system. As the equipment is cooled, the water picks up the heat and returns to the top of the cooling tower. The hot water is distributed onto a hot deck or through the sprayer nozzles that evenly distribute it over the tower fill media. The tower fill media is designed to increase surface area, as well as contact time between air and water. This enhances evaporation and allows further cooling of the tower water. The water then falls into the tower basin where it is then pumped back into the facility continuing to cool the equipment.
Scaling within a cooling tower can restrict the water distribution of spray nozzles, reduce the water flow through the openings of a hot deck and restrict the airflow within the tower. All of these conditions will result in diminished cooling capacity and inefficient operation of the associated equipment on the cooling tower system. 

How to use RYDLYME when cleaning a cooling tower system

Adding RYDLYME to the cooling tower basin allows the tower’s transfer pump to circulate the solution throughout the entire cooling system while in operation. This can all be accommodated during the normal operation of the cooling tower without shutdown! It is imperative when calculating a required amount of RYDLYME needed for a cooling tower system to include enough RYDLYME for the equipment load of the tower. This prevents the spread of Legionnaires’ Disease.

How to clean a cooling tower system:

  1. Close make up water valve to tower basin.
  2. Turn off all chemical or non-chemical water treatment, conductivity meters and pH meters.
  3. It is recommended that all loose water scale, lime, mud, rust and other foreign matter be manually removed from tower basin prior to starting the cleaning.
  4. Lower the water level in the tower basin to a point where the pump can maintain circulation without cavitation and close the bleed-off valve.
  5. It is recommended that the fans be turned off during the cleaning.
  6. Determine the proper amount of RYDLYME to be added to the system. Please note that the amounts recommended in the chart are just the guidelines and that your application may require 2-4 time the chart amount, depending on the severity of the deposit build-up in your system.
  7. To minimize excessive foaming, you may now slowly add required amount of RYDLYME to the tower basin.
  8. The bubbling and foaming you will observe is a natural reaction of the RYDLYME dissolving the water-formed mineral deposits within the system.
  9. Once the RYDLYME is in the tower system, allow it to circulate. Start charting your pH readings or performing calcium spot tests to measure the effectiveness of the RYDLYME solution during the cleaning (“Testing the Effectiveness” is available at our website or contact us directly for a copy). If the RYDLYME cleaning solution expends prior to the completion of the recommended circulation time, there is more scale in the system. It is recommended that you repeat steps 6-9 to complete the cleaning.
  10. It is recommended that the RYDLYME cleaning solution be cycled out of the system to prepare it for normal operation. At this time, strainers should also be removed, inspected and cleaned as well.

Once the cleaning material has been cycled rom the tower system, turn your conductivity, pH meters or any other equipment back on. Return the make-up water and bleed-off valves per the manufacturer’s recommendations. Lastly, resume normal system operation.

For more detailed instructions, call Apex Engineering Products today for a free quote at 630-820-8888 or download our cooling tower brochure here!



  • Safe for personnel!

  • Safe for the environment!

  • Safe for the equipment!

  • Dissolve the toughest mineral deposits!

  • Fast, convenient, effective!



Ready to order? Want more information on cooling tower cleaning with RYDLYME? Fill out the form or call 630-820-8888

First Name     
Last Name  
Address Line 1  
Address Line 2  
Postal Code  
Phone Number  
Email Address  
How did you hear about us?
Email format
Which email lists would you like to receive?




Or call us at 630-820-8888!


Apex Engineering Products Corporation  |  1241 Shoreline Drive  |  Aurora, IL 60504  |  Tel: 800.451-6291 or 1.630.820.8888  |  Fax: 630.820.8886  |  Made in the U.S.A.

Web site design and development by
© 2019, Apex Engineering Products Corporation