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In today’s demanding machining environments, the need for efficient dust, fume and coolant mist extraction is critical, not just for the protection of employee health, but also for maintaining regulatory compliance and operational efficiency. AirBench systems offer powerful, energy-efficient solutions that ensure manufacturing businesses uphold machining safety. Minimising the risks of industrial diseases, high-quality LEV systems helps ensure no-one is breathing in polluted air!
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Even the most advanced local exhaust ventilation systems require regular maintenance to ensure long-term performance in industries such as CNC machining, where airborne pollutants are prevalent. The volume of particles produced depends on the material; for example, wood CNC machining, such as routing or milling, generates a large amount of fine wood dust, which poses a significant health risk.
Similarly, machining composites like carbon fibre or fibreglass creates hazardous fine dust that can be dangerous to both the lungs and skin. Plastic machining can also contribute to dust issues, with materials like PVC or acrylic producing fine chips or dust when milled.
With metal CNC machining, such as working with aluminium or steel, typically larger chips and shavings are generated rather than fine dust. There can also be coolant mist in the air if liquid cooling is used, which requires proper ventilation and safety precautions.
AirBench’s product range is built around efficient mist, fume and dust extraction solutions tailored for specific environments. The core components of these systems typically include high-efficiency filters, fan units, ductwork, pressure gauges and structural housings. Each plays a critical role in ensuring proper airflow, filtration and operator safety.
For coolant mist extraction specifically, AirBench offers two primary product lines: the OMF range for centralised systems, and the AOF range for machine-mounted extraction. Both series are equipped with H13 HEPA final filters capable of capturing extremely fine particulates and ensuring that recirculated air is safe and clean.
Systems like the AirBench BD downdraught bench and AirBench FN are designed to capture swarf, dust and mist from finished machined parts. These solutions offer not only protection against airborne contaminants, but they also help manufacturers comply with the Control of Substances Hazardous to Health regulations and HSG258 guidelines. To uphold both safety standards and productivity, effective maintenance of these systems is essential.
Routine maintenance ensures the consistent performance of your AirBench system and prevents premature component failure. Inadequate upkeep can lead to clogged filters, reduced suction, system inefficiency and increased operational costs. Importantly, poor maintenance may result in non-compliance with COSHH regulations, putting your employees and business at risk.
Proper care of LEV systems safeguards the health of machine operators, enhances energy efficiency, and protects your investment by reducing the likelihood of costly repairs or equipment replacements. Maintenance for AirBench systems should be broken down into daily, weekly, monthly, and quarterly tasks to ensure optimal operation. These intervals are in line with industry standards for machining safety and the upkeep of industrial ventilation systems.
Daily checks should include inspecting the airflow pressure gauge and checking for any unusual noises or signs of reduced suction. Clean swarf and dust accumulation from the workstation surface, particularly in systems like the AirBench BD downdraught bench. Wipe down the system’s external surfaces and verify that there are no visible obstructions in the airflow path weekly. Inspect pre-filters for buildup and replace if necessary. Check the integrity of hoses and connections for leaks or cracks.
The H13 HEPA filter pressure readings should be examined monthly. If the pressure has increased significantly, it may be time to replace the filter. Review the fan unit for vibration or noise that could signal wear. Inspect any ducting for blockage or deterioration, especially in systems used for coolant mist extraction.
Perform a quarterly comprehensive cleaning of the entire system. Check all the electrical connections, ensure the airflow control mechanisms are functioning properly, and calibrate the pressure gauges if needed. This is also a good time to test filter performance and assess whether airflow rates still meet design specifications.
AirBench systems fall under the classification of LEV systems, according to COSHH regulations. This means they must undergo statutory thorough examination and testing at specified intervals. For most machining processes, an annual inspection is sufficient, although some high-risk operations may require more frequent testing.
AirBench offers full LEV testing and servicing for our own systems. We can also test LEV systems from other manufacturers. As a proactive measure, our automated reminder system notifies customers when it’s time for their next test – typically 12 months after commissioning. This ensures compliance with the 14-month legal maximum interval set out in COSHH guidelines.
Filters are the heart of any mist extraction or LEV system. They trap particles, oil smoke and coolant mists before the air is recirculated. Neglecting filter maintenance can severely impact the performance of your AirBench system. Reduced airflow from clogged filters can lead to ineffective extraction, increased strain on the fan motor and unsafe working conditions.
Replacing filters at the manufacturer recommended intervals ensures that your system continues to operate efficiently and in compliance with HSG258 standards. Systems like the AOF range, which include energy-efficient fan motors (some models running as low as 400w) are particularly susceptible to performance dips if filters are not properly maintained.
Reduced airflow or suction is usually a sign of a few common issues. One of the first checks should be the system’s pressure gauge. A higher-than-normal reading is a clear indication that the filters are probably clogged, and replacing them typically restores normal airflow.
It’s also important to examine the ducting and airflow paths for any obstructions, kinks, or collapsed hoses. If the airflow paths are clear and filters are clean, attention should turn to the fan unit. Signs such as unusual noise, excessive heat, or slower fan speed can indicate a motor issue that needs servicing. In some cases, the issue may be related to poorly seated filters or damaged seals that allow air bypass. Ensuring all components are securely fitted and undamaged can often resolve these problems.
We provide complete servicing and support for all our products including replacement filters, performance checks, and LEV compliance inspections. For existing users, it’s helpful to have the unit’s serial number ready when contacting customer support to receive the most accurate advice and pricing.
With more than 10,000 units in operation, AirBench continues to serve a broad customer base. Assembled right here in the UK, all units are ERP compliant, and engineered to be quiet (under 70 dBA) and environmentally friendly. Each system is designed for quick installation, minimal intervention, and consistent performance. With real-time monitoring through integral filter pressure gauges and high-grade H13 HEPA filtration, AirBench solutions help protect your people, your equipment, and your compliance status.
AirBench Ltd are the UK’s leading manufacturer of downdraught benches and cross draught extraction systems. We have more than 10,000 extraction systems in service in the UK and overseas. Along with our range of coolant mist filters and air cleaning systems, we are actively helping businesses across many industries solve their workplace dust and fume issues.
If you'd like to try an AirBench product for FREE simply book a demo and we'll bring one to you.
If you’d like to try an AirBench product for FREE simply book a demo and we’ll bring one to you.