Gentle yet powerful laser cleaning for delicate surfaces: Wattsan PA

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In the world of surface restoration and industrial cleaning, maintaining the integrity of the material is just as important as removing the contamination. This is especially true when working with historical architecture, sculptures, and other sensitive surfaces. Traditional cleaning methods often fall short—they can be too abrasive, time-consuming, and imprecise. Fortunately, with over 20 years of experience in manufacturing laser machines, Wattsan has developed a highly efficient and precise solution: the Wattsan PA laser cleaning machine.

Recently, one of our partners in the Netherlands needed to clean architectural monuments—an application where precision and delicacy are essential. Damaging the original surface is simply not an option. In such cases, conventional cleaning techniques are not only risky but also inefficient. That’s where the Wattsan PA laser cleaning machine comes in. Designed specifically for fine, non-invasive surface treatment, the machine handles these challenges effortlessly, offering a powerful yet safe solution for cleaning a wide range of materials including metal, wood, and plastic.

Two series, one mission: clean with precision

Wattsan laser cleaning machines are available in two main series: PA and PW Pro. Each series is designed with specific applications and user needs in mind. The PA series, the focus of this article, stands out for its portability, user-friendly operation, and precision. Key differences between the PA and PW Pro models include the type of cooling system, available power outputs, focal length, and the scanning area dimensions. While PW Pro models are more suitable for fast and large-scale cleaning jobs, the PA series is unmatched in applications where surface protection is a priority.

Versatile cleaning patterns with the PA series

One of the distinctive features of the PA laser cleaning machines is the dual-mirror system in the laser gun, allowing users to select from nine different cleaning patterns, including:

1. Horizontal line
2. Vertical line
3. Ellipse
4. Square
5. Wavy rectangle
6. Snowflake
7. Filled rectangle
8. Circle
9. Spiral

These patterns provide the flexibility to adapt to different shapes and contamination types. By distributing heat more evenly across the surface, these patterns significantly reduce the risk of overheating, which could otherwise damage sensitive materials.

Wattsan

PA

Laser source	JPT MOPA
Cooling system	Air
Cleaning head weight	0.76 kg
Fiber length	5 m

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Advanced laser settings for maximum control

Aside from the cleaning pattern, two other critical parameters can be adjusted during operation: laser frequency and pulse width. The frequency determines how many laser pulses are emitted per second, while the pulse width controls how long each pulse lasts. This matters because longer pulses deliver more energy, which speeds up the cleaning process but also generates more heat. Conversely, shorter pulses produce less heat, making them ideal for cleaning temperature-sensitive surfaces.

At the heart of the PA cleaning system is the JPT MOPA laser source, available in 100W, 200W, and 300W configurations. Thanks to MOPA technology, operators can precisely control the pulse duration while maintaining constant power, allowing for fine-tuned cleaning performance across different materials and contamination levels.

Reliable components and intuitive operation

Each Wattsan PA machine is built using components from trusted global brands such as JPT, Relfar, and Ruida. The laser gun, produced by Relfar, weighs only 0.76 kg, making it lightweight and easy to operate for extended periods. A Ruida controller ensures seamless operation and provides a user-friendly interface for configuring parameters.

The PA model features air cooling, which is not only efficient but also reduces the overall weight and complexity of the system. This makes the machine especially suitable for mobile use or integration into compact workspaces. Additionally, all Wattsan machines come with training and full technical support, ensuring a smooth start for any user—whether you’re a restoration specialist or an industrial contractor.

Choosing the right model for the right job

While high-powered models like the CW Pro (up to 3000W) or the latest 6000W cleaner can process large areas quickly—cleaning 1 square meter in just 50 seconds—they are not suitable for every application. High power does not always equate to better performance, especially when working on sensitive surfaces such as statues, wooden artifacts, or gypsum structures.

This is where the Wattsan PA series truly excels. It is engineered for applications that require a careful balance between efficiency and material preservation. Whether you are removing grease, oil, corrosion, or even paint from delicate surfaces, the PA laser cleaner is your best choice. For faster cleaning of light surface contamination on large metal structures, the CW and CW Pro models might be more appropriate.

Conclusion

The Wattsan PA laser cleaning machine offers a unique combination of precision, safety, and adaptability, making it an ideal tool for delicate surface restoration. Whether you’re preserving cultural heritage, maintaining industrial tools, or working with sensitive materials, the PA series allows you to clean effectively without compromise.

With global delivery—including locations as remote as Antarctica—and full support from our team, Wattsan ensures that no cleaning task is too far or too challenging. Explore the future of non-contact, damage-free cleaning with this machine.

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