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Stationary Solutions with Filter Units

Stationary Solutions with Filter Units FAQs

Straight answers to the questions people ask most when choosing a wall or floor mounted filter unit with extraction arms for a welding station.

What is a stationary solution with a filter unit?icon-minus-redicon-plus-red

It is a complete fixed extraction package: one or more extraction arms connected to a fan and filter unit. The arm captures fume at the weld, the filter cleans the air and the cleaned air is returned to the workshop.

Because it does not need ducting to the outside, it is quick to install and keeps the heat in the building.

How many arms do I need?icon-minus-redicon-plus-red

Choose the number of arms by how many welders will work at the same time and how far apart they are. A single-arm package suits one station, while twin-arm versions serve two welders next to each other.

The unit must have the airflow to run all its arms at once. Adding arms without enough fan capacity weakens capture.

What is the difference between lighter and heavier-duty arms?icon-minus-redicon-plus-red

Lighter arms are simpler, and suit occasional or light use. Heavier-duty arms usually hold their position better, move more smoothly and are built for daily use.

The right choice depends on how often the arm will be moved, the reach needed and the working environment.

Where should the unit be mounted?icon-minus-redicon-plus-red

Wall-mounted units save floor space, but the wall must carry the weight and vibration. Floor-standing units suit places with no suitable wall. Leave room for filter changes and access for servicing.

The arm should reach the whole work area, so place the unit close to the welding position.

What type of filter is in these units?icon-minus-redicon-plus-red

They normally contain a particle filter that removes welding fume. Some are disposable and some can be cleaned. The manual says which type is fitted and how to look after it.

Check that the filter is suitable for the fume you produce, and that recirculating the air is acceptable under your risk assessment.

Is it suitable for stainless steel or other hazardous fume?icon-minus-redicon-plus-red

Stainless steel fume can contain hexavalent chromium, and some coatings give off other harmful fume, so these jobs need extra care. Whether filtered air can safely be returned to the workshop depends on the filter fitted, the fume produced and your risk assessment.

Check the data plate and manual for your own unit, and the safety data for the materials you use. Some work needs the fume discharged outside or extra respiratory protection for the welder as well.