Introduction and Product Overview

The Pulsotronic filter by Coral S.p.A. is a high-pressure, efficient filtration unit designed for dust extraction in industrial processes such as dry sanding, composite material processing, stone and marble work, sandblasting, and metal grinding. It supports integration with centralized systems and offers modularity for diverse industrial applications.

Operating Principles and Cleaning System

The unit features an advanced compressed-air cleaning system controlled electronically to adjust cleaning cycles based on filter cartridge clogging levels. This adaptive control optimizes compressed air usage, reduces mechanical wear on filters, lowers lifecycle costs, and enhances operational efficiency. Real-time clogging visualization is provided. An optional frequency inverter with pressure stabilization can modulate motor speed to optimize energy consumption and suction performance.

Noise Reduction Features

The design includes a soundproof chamber enclosing the pump and cleaning system, effectively reducing noise emissions well below the regulatory limit of 72 dB, ensuring a quieter working environment.

ATEX Compliance and Explosion Protection

ATEX-certified versions of the Pulsotronic filter are available for environments with explosion risk, compliant with Directive 94/9/EC. Structural integrity is assured through FEM design analysis, adherence to UNI EN 288-4 welding standards, and compliance with the 97/23 (PED) pressure equipment directive. The standard ATEX model withstands 1 barg design pressure, while a special version supports up to 2 barg, suitable for ST2 classified dusts. Integrated protective devices meet ATEX 94/9/EC requirements; otherwise, users must comply with ATEX 99/92/EC regulations.

Key Technical and Operational Highlights

• High-pressure filtration suitable for various industrial dust types.
• Modular design for flexible centralized system integration.
• Automatic compressed-air cleaning with electronic control for optimized air use and filter longevity.
• Optional frequency inverter for motor speed and energy optimization.
• Soundproof housing reduces noise below 72 dB.
• ATEX-certified versions with enhanced structural reinforcement for explosion safety.
• Compliance with European standards for welding, pressure equipment, and explosion protection.

System Components and Airflow

• Polluted air inlet for dust-laden air entry.
• Polyester fiber filter cartridges capturing dust particles.
• Compressed air tank for cleaning and operation.
• Collecting bin for dust residue.
• Vacuum pump providing suction power.
• Clean air outlet for filtered air exhaust.
• Optional ATEX venting for explosive atmospheres.

Tubing and Accessories

• Hoses and pipes specified for suction, compressed air, and electrical supply with diameters from 32 mm to 50 mm and lengths between 1.5 and 4 meters.
• Optional multi-service totems combining dust extraction, compressed air, and electrical distribution.
• Additional accessories include connecting pipes and branded service flags.

PULSOTRONIC Series Technical Features

Note: EX models are ATEX certified for explosive environments.

Installation Example

The document includes a graphical installation example showing connections for hoses, compressed air, and electrical supply to the filtration units, facilitating proper setup.

Production Program and Applications

The Pulsotronic series is part of a broader product range including mobile dust collectors, cartridge filters, silos, boilers, filter-extraction units for multiple industries (metalworking, chemical, electronics, textile, food, woodworking), welding fume filters, articulated extraction arms, spray booths, soundproof and pressurized cabins, fans, ductwork, smoke and vapor filters, dryers, and hose reels with suction fans for automotive applications.

Manufacturer Information and Disclaimer

Produced by CORAL s.p.a., Italy, with offices in Italy, France, and the UK. The company reserves the right to modify technical data without prior notice. All data are indicative and subject to improvements.

Critical Information Summary

• Filter surface area ranges from 11 to 22 m² depending on model.
• Maximum air flow capacity ranges from 260 to 620 m³/h.
• Electrical power requirements vary between 3 and 7.5 kW.
• Operating pressure up to 7 bar with differential pressure around 250-300 mbar.
• Dust collection capacity is 30 liters per unit.
• Unit weight ranges from 465 to 580 kg depending on model.
• Optional ATEX certification available for hazardous environments.
• Accessories include multi-service totems for combined dust extraction, compressed air, and electrical distribution.