Why Use A Recirculating Fume Extractor?
External venting systems pump dust and fumes outside, polluting the environment. The alternative is a Purex Recirculating Filter System. The Purex extractor captures dust and fumes in specialised filters and returns clean, purified air to the workplace. The Purex extractor is simply connected next to the process so if the process moves, the extractor easily moves with it.
How long will the system take to install?
Venting To The Environment System - Several Days On Average.
Recirculation System (Purex) - In many cases just minutes.
Will there be any disruption in the workplace?
Venting To The Environment System - Expensive contractors and scaffold etc. may be required, disrupting work for lengthy periods.
Recirculation System (Purex) - Minor if any.
Can the system be moved?
Venting To The Environment System - Only by contractors with scaffold etc. meaning extra cost and disruption to work.
Recirculation System (Purex) - Yes. Simply unplug, move to new location and reconnect.
Are holes in the building required?
Venting To The Environment System - Yes. They need to be specially cut and sealed.
Recirculation System (Purex) - No.
Are external emissions regulations a problem?
Venting To The Environment System - Company must investigate and obey local laws.
Recirculation System (Purex) - Not applicable. No problem.
Is there any energy lost e.g. heating/conditioning costs?
Venting To The Environment System - Energy and therefore money is wasted when heated or conditioned air is pumped outside.
Recirculation System (Purex) - No energy or heat is lost as the air is recycled.
Are there any ducting / installation costs?
Venting To The Environment System - Expensive - as ducting needs to be purchased and specialist installation is required.
Recirculation System (Purex) - Minimal if any, depending on process.
Are there any cleaning costs?
Venting To The Environment System - Specialist cleaning required to prevent risk of fire or contamination in ductwork. Again contractors, scaffold, disruption and expense.
Recirculation System (Purex) - Minimal if any.
Are there any decontamination costs?
Venting To The Environment System - Specialist decontamination may be required should the ducting be removed.
Recirculation System (Purex) - None.
Can fumes be drawn back into the workplace?
Venting To The Environment System - Yes. Through windows or vents.
Recirculation System (Purex) - Not possible as all fumes are locked into filters.
Could there be disputes with my neighbours?
Venting To The Environment System - Yes. Over hazardous fumes and odours. Not applicable.
Recirculation System (Purex) - No problem.
Could temperature control of machinery (i.e. reflow oven) be affected?
Venting To The Environment System - Yes, fluctuations in extraction rates can be caused by external weather conditions making temperature control more difficult.
Recirculation System (Purex) - Flow control provides the correct maintainable extraction rate and temperature, reducing reject rates
Is planning permission required to install the extraction system?
Venting To The Environment System - Expensive, time consuming planning permission may be required.
Recirculation System (Purex) - No.
Could the roof leak?
Venting To The Environment System - Possible if not sealed and installed correctly.
Recirculation System (Purex) - Not applicable. No problem.
Can negate buildings/roofing insurance
Venting To The Environment System - Possible.
Recirculation System (Purex) - Not applicable. No problem.
May not be allowed by landlord
Venting To The Environment System - Possible.
Recirculation System (Purex) - Not applicable. No problem.
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