Problem

A large private facility in Phoenix, AZ, needed help on their closed loop chilled and hot water systems with extremely high corrosion rates. The systems were only 2 years old.

The problems were discovered when they started plugging 30 mesh strainers in their closed loops. A 60 mesh y-strainer was also installed, which became a maintenance nightmare because it plugged twice a day. They began looking for a treatment system that would minimize corrosion and stop producing the black metal debris. They also needed a filtration system that would filter to less than 1 micron and clean the systems.

The closed loop systems ran without water treatment for about 9 months. The picture below is of the strainers in the chiller that were pulled in May of 2022. In an attempt to solve the problem, they ran detergent through the system which resulted in additional rust and debris plugging the strainers.

Lab reports confirmed that they had corrosion issues caused by dissolved oxygen as well as high iron content deposits in their closed loop chilled and hot water systems.

The (3) main problems in closed loops:

1. Corrosion caused by dissolved oxygen
2. Sediment and sub-micron metal particles in the water
3. Insulating high Iron content deposits

These systems were experiencing all of these problems.

RESULTS

“We are extremely grateful for our client’s trust in MPSW, and to EasyWater for providing a lasting solution to this problem job. Despite some healthy skepticism during the proposal phase, the Series C Systems began working immediately and impressed the Owner, Engineer, and Contractor with its effectiveness. The quality of the water produced was truly remarkable. At MPSW we take great pride in only partnering with the best manufacturing partners in their respective fields and EasyWater delivered on this expectation in spades.”

—Jessica Wozniak, Sales Manager at MPSW

The 2024 quarterly June inspection found both the chilled and hot water closed loops to be free of metal particles and sediment.

The systems were running perfectly and the 60 mesh y-strainers were free of deposits and debris. Weekly maintenance was no longer required to maintain the closed loops. As described in the testimonial above, the EasyWater Series C Systems are producing great results!

Are you looking for closed loop water treatment for your facility?

We manufacture and offer a complete line up of industrial water treatment solutions. Please give us a call at 1-888-766-7258, or use the form below to reach out to us, so one of our experts can help you with your project.

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Deposits and dissolved oxygen in the water were tested at a certified third party lab. The EDS analysis of the deposit was found to be “composed primarily of zinc and iron [from the Closed Loop System].” Dissolved oxygen was 9.13Mg/L. The lab results confirmed the problem to be corrosion caused by dissolved oxygen.

Solution

EasyWater Series C Model CLC-1000-S (Closed Loop Chilled – Skid-Mounted). This automatic backwashing, skid-mounted system provides cost effective, low maintenance, non-chemical treatment for closed loops. This unique, three-part solution contains:

• Proprietary filtration media that continuously removes dissolved oxygen
• Sub-micron, self-backwashing filter for the removal of sediment, debris, and bacteria
• EasyWater No-Salt Conditioners to prevent and remove insulating deposits, as well as biofilm
  and bacteria

RESULTS

Three weeks later, the dissolved oxygen was dramatically lower, and there wasn’t a single clogged thermal control unit despite the loop never having been flushed.

AFTER – Clean prefilter for thermal control unit after one month of EasyWater Series C installation

AFTER – One month after adding EasyWater Series C Closed Loop Treatment System

Since installation of the Series C System:

• The dissolved oxygen level has been extremely low
• Henniges hasn’t had a single thermal control unit clog
• They haven’t had to flush the system

Henniges is so pleased with the results, they installed a second CLC-1000-S for another closed loop at their New Haven facility. They are also obtaining quotations for treating additional closed loops with Series C, as well as cooling towers with EasyWater’s CTF System.

Are you looking for cooling tower or closed loop water treatment for your facility?

We manufacture and offer a complete line up of industrial water treatment solutions. Please give us a call at 1-888-766-7258, or use the form below to reach out to us, so one of our experts can help you with your project. 

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“I’m very impressed with the very low iron and copper levels. This indicates great corrosion control in the system.”
– Chem-Aqua Consultant

Problem:

For years, Tallahassee Community College (TCC) battled and experienced a range of problems in their closed loop hot water and chilled water systems. They had a contract to add traditional chemicals and have water tests conducted on a regular basis but continued to fight leaks, sediment and iron oxide deposits in their piping and heat exchangers, which significantly reduced heat transfer and increased energy consumption by more than 12 percent. Traditional chemicals were not protecting their closed loops properly and were costing them a lot of money, so TCC turned to EasyWater for help.

EasyWater Treatment Test / Results:

TCC purchased three Series C Closed Loop Treatment Systems to treat three small (less than 4,000 gallons) closed loop hot water systems as a trial. The results were excellent, and they found the Series C Closed Loop Treatment Systems cleaned up the loose metal and sediment in the water, reduced the dissolved oxygen levels to less than 1ppm and removed the existing iron oxide deposits in the systems.

The results were so positive that they decided to purchase a larger Series C System for their 25,000-gallon central closed loop hot water system. This Series C System provided the same results for their larger closed loop hot water system, so they purchased an even larger Series C System for their 40,000-gallon central closed loop chilled water system.

TCC continues to be very pleased with the results and even had their previous chemical company test the water in their central closed loop hot water system to give an opinion of EasyWater’s performance.
Below is the email and water test results from their previous chemical company regarding EasyWater’s performance:

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