July '20

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When it comes to setting up the extrac- tor with the laser or printer, sources con- tend closer is better. Keeping a minimum distance in the ductwork between the units prevents the blower motor from working as hard to mitigate fumes. Plus, Snell says, if ductwork between the extractor and ma- chinery is too long, it also "translates to higher vacuum pressures and your filter life perceived as being shorter because your ma- chine can only blow air for so far." Baird suggests that with laser fume extrac- tion, a key factor is knowing the X and Y of the cutting area, or with printing "you'll need to know the length of the cavity that's being printed in," he explains. "(With this info), you can get a smaller device to do a good job at capturing particulates and odor and releasing clean air into the room." Depending on the style of extraction a shop goes with, square footage may or may not play into capacity. Sources contend that any fume extractor that's designed as a source capture machine means that it captures fumes directly at the source, so the room's physical size won't necessarily be an issue. Plus, Tefertiller points out, a direct source-capture unit allows for more flexibility because the unit can be moved to whatever location the equipment is needed. Room-based purifiers meanwhile remove particulates radiating from machines in a production area. The drawback to this method, Baird suggests, is that "the only time that room is truly clean is when all the machines are off, and no one is in the room." TOOLS AND MONITORING When it comes to monitoring fume levels, the consensus is that most extractors feature onboard monitoring systems and often in- clude continual monitoring of VOCs and particulates. Others feature real-time moni- toring, typically with an LCD screen, so that users can keep an eye on the levels. Purchasing a higher-capacity extractor might save shops money over time, even if it costs more up front, since it'll help reduce operational costs. (Left image courtesy PAT Technology; right image courtesy BOFA) It's generally recommended to place extractors away from areas like customer service and order pickup desks since they generate some noise. (Image courtesy Purex Fume Extraction by BSE) THINKING ABOUT GOING THE DIY ROUTE WITH FUME EXTRACTION? YOU MIGHT WANT TO THINK TWICE. HERE'S WHY: G R A P H I C S - P R O. C O M 2 0 2 0 J U L Y G R A P H I C S P R O 4 7

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