High-Speed Freezing Door with Insulated Curtain - PR31

The PR31 is a high-speed roll-up door specially designed for freezer cold rooms that need to maintain an internal temperature as low as -20°C. It is intended for indoor applications with an adjacent refrigerated area at 7–8°C, creating an effective thermal barrier against temperature differences of up to 30°C.

Equipped with a proprietary 10 mm insulated curtain, composite reinforcements, and moisture-resistant components, the PR31 reduces condensation, ensures optimal sealing, and enhances energy efficiency in high-demand environments.

High-Quality Technical Design

Every component has been carefully selected to ensure maximum durability and safety. Its robust construction using aluminum and stainless steel makes it ideal for environments with high humidity or a risk of corrosion. In addition, it features the following specifications, among many others:

• GFA IP65 control panel and motor with absolute encoder
• Opening speed up to 1.2 m/s – closing speed up to 0.6 m/s
• Guide and motor heating elements to prevent ice formation
• Estimated service life: 750.000 cycles

Standard Features and Functionalities

The PR31 comes fully equipped as standard, designed for quick installation and long-term reliable operation:

• Quickfit®: Self-supporting system that significantly reduces installation time.
• Aqualine®: Ensures airtight sealing even in the presence of water and ice.
• Heating elements: Integrated in guides and motor to prevent freezing.
• Frequency inverter: Enhances control and energy efficiency.
• Safety system: IP67 photocells and sensors adapted for freezing environments.
• Motor cover and Uninterruptible Power Supply (UPS): For protection and uninterrupted operation.

Safety Systems

The PR31 comes standard with an integrated emitter/receiver photocell (IP) mounted in the guides, and an IP67 sensor on the lintel, specifically designed for freezing environments and areas with high water density.

With these active protection solutions, the PR31 ensures safe and reliable operation even in the most demanding environments.
For installations where thermal control cannot afford any errors, its technical design, along with its safety and efficiency features, make it a trusted option for the most challenging environments.

To learn more about the technical details and see how it fits your environment, you can download the technical datasheet below.