A typical fume extraction system has a pre-filter, HEPA filter, and some type of activated carbon, each of which is sized accordingly to meet your application’s specific airflow needs; but keep in mind, different fume extraction systems use different styles and capacities of filter sets, so it’s important to know which your system requires and how to perform proper maintenance.
Some systems are simple to monitor and change, while others are quite complex and cumbersome to change. Some systems, such as BOFA’s, are equipped with monitoring the status of the filters on the display so that you can change them out accordingly per the filter blocked status.
To change the filters, you first must stop the laser process and turn off the extraction system. Depending on the system, you either open the front filter door or unclip and remove the top cover of the unit. Generally, you remove and replace the appropriate filters by sliding them out and then back in or lifting them out and setting them back in place. From there, you close the filter door or reinstall the top cover, turn the extraction system back on, and then adjust the flow rate accordingly for the application.
Ultimately, a properly maintained extraction system helps ensure years of trouble-free and safe operation of your engraving laser. Failing to regularly take care of your filters could mean unsafe conditions and an inefficient laser engraver.
