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Engineered for hygiene: The Sirius cooling tunnel advantage

June 23, 2025

• Introduction: Why hygienic design is no longer optional
• 1. Designed for maximum accessibility
• 2. Tool-free maintenance with quick release mechanisms
• 3. Hermetically welded stainless steel construction
• 4. Removable cooling plates and filters
• 5. Sealed gaskets with no bacterial traps
• 6. Integrated condensate management
• 7. Built-in service logic: From handles to sensor placement
• Summary: Built clean. Works clean. Stays clean.

Introduction: Why hygienic design is no longer optional

In today’s food and confectionery industry, hygiene is not a competitive edge, it’s a requirement. Stringent food safety regulations, rising customer expectations, and the high cost of product recalls have placed a spotlight on equipment design like never before. Cooling tunnels, operating in the most critical stages of production, are under particular scrutiny.

This is why Aasted developed the Sirius Cooling Tunnel, a tunnel engineered from the ground up to deliver uncompromising hygiene, operational efficiency, and long-term reliability. Built in stainless steel, with no adhesives, no hidden crevices, and no unnecessary complexity, Sirius redefines what “cleanable” means in cooling equipment.

Internal access to key components

Inside the tunnel, all key components, including cooling plates, filters, rollers, and scrapers, are accessible and removable. No proprietary tools. No lengthy disassembly. Just fast, intuitive access that minimizes downtime and maximizes hygiene compliance.

3. Hermetically welded stainless steel construction

No adhesives, no weak points

Where many manufacturers opt for cost-cutting solutions like adhesive bonding or plastic fittings, Aasted makes a deliberate choice: fully welded stainless steel throughout the tunnel frame and contact zones.

This matters.

Why? Because glued joints and hollow plastic parts are breeding grounds for bacterial buildup. They’re difficult to inspect, harder to clean, and can degrade over time. Sirius eliminates those weak points entirely with a design that is hermetically sealed, robust, and built to last.

There are no hollow handles, no open gaskets, and no laminated panels, every detail is engineered to withstand washdown conditions without compromise. Durable and audit-proof by design.

4. Removable cooling plates and filters

Cooling components are one of the most common sources of hidden contamination in Sirius tackles this by ensuring both filters and cooling plates are fully removable, giving cleaning staff access to all surfaces. These components are not embedded or fixed inside boxed sections but designed to be pulled, cleaned, and reinserted with minimal effort.

This feature dramatically reduces the risk of hidden contamination, such as mold, dust, or sugar buildup, and supports better long-term temperature control and energy efficiency.

Detachable solid gaskets with no voids

The Sirius Cooling Tunnel uses fully detachable, solid-surface gaskets, designed without any internal cavities or hidden contact points. This seemingly minor feature translates to a major win in hygienic safety, especially in high-humidity zones where bacterial growth can go unnoticed.

6. Integrated condensate management

Cooling environments naturally produce condensate, and if mismanaged, it becomes a hotspot for microbial risk.

No pooling, dripping, or bacteria buildup

Sirius incorporates a dedicated condensate collection and drainage system that prevents moisture from pooling, dripping, or coming into contact with product zones. Instead of relying on makeshift trays or external fittings, the condensate system is integrated directly into the machine architecture.

This ensures compliance with global food safety standards and supports HACCP planning without the need for constant workaround solutions.

7. Built-in service logic: From handles to sensor placement

Every aspect of Sirius reflects a service-first mindset.

• All handles are made from solid stainless steel, not plastic, ensuring no degradation or micro-tears over time.
• Belt tracking sensors are fully integrated and protected, not mounted on exposed towers, which are vulnerable to damage or misalignment.
• Service carts and guided maintenance workflows make the entire process efficient, intuitive, and consistent.

It’s not just a tunnel. It’s a hygiene-optimized platform that reduces risk, simplifies operation, and enhances product integrity.

Whether you’re upgrading an old line or designing a new facility, Sirius offers future-proof performance with built-in food safety.