CloverFilter Automatic Roll Filters: Compact, Efficient, and Reliable Air Filtration

CloverFilter Automatic Roll Filters: Compact, Efficient, and Reliable Air Filtration

CloverFilter's automatic roll filters deliver superior performance, combining compact design with long operational autonomy. The innovative construction allows the filter media rolls to occupy just 10-20% of the total filter surface area, depending on filter size. This efficiency is achieved through the compressibility of the filter media and a rational mechanical design, ensuring smaller roll diameters with maximum unwinding capacity, even under demanding conditions.

Construction

CloverFilter automatic roll filters are built for durability and functionality:

• Material: Made entirely of pressed and bent galvanized steel sheets, assembled with steel bolts and rivets for robustness.
• Pre-Assembled Design: Filters are typically delivered fully assembled, ready for installation in ducts or plenums. Upon request, they can be supplied in pre-assembled components for easier transport or specific site requirements.
• Filter Media: Composed of glass fibers (with dust-binding agents) or synthetic fibers, the media is wound on a spool and protected by a cover in the top section of the filter.
• Media Movement: A motor reducer located at the filter's front bottom drives the media downward. Dirty media is automatically rolled onto a disposable spool at the lower part of the unit for effortless maintenance.

Dimensions

The automatic roll filter is available in 12 standard widths:

• Widths: 540 mm to 2130 mm.
• Heights: Minimum 1000 mm, adjustable in 100 mm increments up to a maximum height of 5000 mm.
• Custom Sizes: Available upon request to meet unique application needs.

Installation

Installing CloverFilter automatic roll filters is simple:

1. Preparation: Ensure a level floor and a free space of at least 800 mm for servicing.
2. Assembly: Attach sections together and bolt them to the plenum or filter housing with perimetric flanges.
3. Electrical Connection: Connect the control box to the drive motor and electrical supply.
4. Airflow Direction Options:
   • Model FRA: Media rolls upstream (direct airflow).
   • Model FRI: Media rolls downstream, with a cover for dirty rolls.
5. Horizontal Installation: Possible with appropriate support, ensuring the filtering section remains perpendicular to the airflow.

Special versions are also available, including:

• Model FRM: Fully enclosed, ideal for duct installation or air handling units.
• Model FRT: Includes an additional frame for bag filters or rigid pocket filters for high-efficiency applications.

Principle of Operation

The filter works on the viscous impingement principle:

• The filter media, impregnated with adhesive oil, captures contaminants.
• A pressure switch activates the drive motor when the pressure drop reaches a preset value, unwinding fresh media until a lower pressure drop is achieved.
• Guiding Channels: Side channels ensure smooth media uncoiling.
• Support Grid: A metal grid on the air-leaving side prevents media deformation and ensures an airtight seal between the frame and the media.

Control System

CloverFilter offers two control options for the drive motor:

1. Standard Pressure Switch Control: Activates based on pressure drop levels.
2. Optional Timer Control: Operates on a preset schedule, ideal for specific installations.

Additional Features:

• Manual Controls: Includes manual stop and media feed options for convenience.
• Safety Mechanisms: A switch prevents complete roll unwinding, ensuring the system never operates without media.
• Signal Light: Alerts operators when the roll is nearing its end.

Why Choose CloverFilter Automatic Roll Filters?

CloverFilter’s automatic roll filters provide efficient air filtration, durable construction, and easy installation, making them ideal for commercial and industrial applications. With compact design, customizable options, and advanced control systems, these filters are designed to meet diverse operational needs while maintaining exceptional air quality and system reliability.