TL;DR
- Greenwood Aggregates was experiencing accelerated wear in the feed zone of their wash screen.
- The existing setup used large side-tensioned polyurethane sections, requiring full replacements even for minor localized wear.
- Polydeck Screening Experts retrofitted the first 4 ft (1.22 m) of the screen with Largueros PIPETOPy POLYDEX® MAXI panels.
- The modular retrofit allowed targeted replacements, reduced downtime, and increased throughput by 1.5×.
- The site achieved greater media life and streamlined maintenance with minimal waste and no specialized tools.
Inefficient Screen Maintenance: The Hidden Cost of Side-Tensioned Media in High-Wear Zones
In many screening circuits, feed zones take the brunt of impact and experience accelerated wear. When those zones are outfitted with side-tensioned screen media, even small areas of localized damage can result in entire section replacements. That’s because side-tensioned panels are typically large, inflexible, and bolted in as single continuous units. This adds unnecessary cost, increases downtime, and generates more waste than modular systems.
Side-tensioned systems also tend to be heavier and more complex to work with, requiring additional hardware like bolting strips and often specialized tools for removal. In plants where uptime and ease of maintenance are critical, this setup can severely limit throughput potential.
The Challenge: Localized Wear and Full Panel Changeouts
At Greenwood Aggregates, the feed zone of the wash screen was experiencing precisely this scenario:
- Premature wear in the first 4 ft (1.22 m) of the screen deck
- Full section changeouts required for small wear areas
- Extra weight and labor due to bolting strips and hardware
- Media mismatch between polyurethane in the feed zone and wire cloth downstream
The site needed a solution that targeted wear more precisely and simplified ongoing maintenance.
The Solution: PIPETOP Conversion and POLYDEX Installation
Polydeck Screening Experts delivered a two-part solution:
- Converted the first 4 ft (1.22 m) of the deck from side-tensioned to modular using Largueros PIPETOP
- Instalado POLYDEX® MAXI 1 ft x 1 ft (305 mm x 305 mm) modular panels to allow for easy, localized replacements
- Eliminated the need for large bolted sections, specialty tools, and full-section swaps
- Streamlined future maintenance by standardizing the panel system across the zone
With this new layout, operators could focus only on the areas that wore out—saving time, labor, and material.
The Results: Faster Changeouts, More Uptime, and Better Performance
The change brought immediate benefits to the operation:
- Throughput increased by 1.5× compared to the original side-tensioned setup
- Maintenance now focuses solely on worn areas instead of full sections
- Material waste was reduced, and changeouts became significantly quicker
- Overall plant efficiency improved with less labor and more consistent uptime
The combination of structural conversion and smart media installation delivered long-term value and simplicity.
Why It Worked: Smarter Structure Meets Modular Flexibility
The solution succeeded because it matched two key elements: an efficient structural foundation and a versatile screening surface. The conversion to PIPETOP™ stringers gave Greenwood Aggregates a lightweight, modular-ready deck, while POLYDEX® MAXI panels allowed the site to manage wear more surgically. Together, they eliminated unnecessary changeouts, simplified future maintenance, and gave the site more control over its screen life and production goals.
Preguntas frecuentes
Why is modular screen media better for high-wear zones than side-tensioned panels?
Modular screen media allows operators to replace only the worn panels, rather than the entire section. This reduces material waste, saves time, and improves maintenance efficiency—especially in feed zones. Side-tensioned systems often require full-section swaps, additional hardware, and more downtime to complete even minor repairs.
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