Cooling Tower Screens: What Are the Benefits of a Traveling Sump Screen?

Editor’s note: This post was originally published on December 29, 2022, and has been updated for accuracy and relevance.

Traveling sump screens help cooling towers stay online by continuously removing debris without requiring screens to be pulled, cleaned, repaired, or replaced as often as traditional stationary screens. By protecting pumps, maintaining flow, and reducing the risk of costly downtime, they provide a more efficient solution for cooling tower operations.

Cooling tower screens are critical because they prevent debris from entering the system, where it can damage pumps, disrupt flow, and create larger operational problems.

Traditional stationary screens collect debris over time and can become clogged. When that happens, they may require cleaning, repair, or replacement, which can lead to expensive maintenance and cooling tower downtime.

Traveling sump screens eliminate much of this time and resource cost by moving debris out of the water flow through an automated cleaning process.

How Does Vari-Flow Screen Design Reduce Maintenance Needs?

Vari-Flow traveling sump screens are designed to operate without lubrication or routine maintenance. Their U.H.M.W. plastic and durable stainless-steel construction eliminates many of the maintenance requirements associated with traditional stationary cooling tower screens.

Key design and construction advantages include:

• No lubrication requirements
• No routine screen maintenance
• Durable U.H.M.W. plastic components
• Stainless-steel construction designed for demanding cooling tower environments

How Do Vari-Flow Traveling Screens Protect Cooling Tower Operations?

Vari-Flow traveling screens prevent debris from reaching pump suction pits, where it can foul downstream exchangers and damage pumps. Because the screen cleans itself without being removed, facilities can maintain cleaner water flow and reduce disruptions to cooling tower operation.

Traditional fixed screens can allow debris to enter pump suction pits, creating several potential issues:

• Fouled downstream exchangers
• Pump damage
• Reduced system efficiency
• More frequent maintenance needs
• Unplanned downtime

Vari-Flow traveling screens offer operational advantages that help address these concerns:

• Screens never need to be pulled or removed for cleaning
• Exchangers remain free of debris
• The back-flush cleaning system requires only one operator and approximately two minutes to clear a screen

Can Traveling Cooling Tower Screens Prevent Exchanger Fouling?

Yes. A traveling cooling tower screen can permanently mitigate exchanger fouling caused by debris entering the system. Rather than treating fouling as a standard maintenance issue, facilities can reduce its likelihood with a properly installed, self-cleaning traveling screen.

Vari-Flow valves and screens are designed to be easy to install, simple to manage, durable, and reliable. With a Vari-Flow traveling sump screen in place, cooling tower operators can protect critical equipment, reduce maintenance demands, and keep their systems operating efficiently.