Filter - Technical Support

When laser engraving MDF the glue gives off a very fine sticky residue/resin which is held in suspension within the fume given off, this residue/resin when it comes in contact with the filter media starts to solidify unfortunately this process can take part on the HEPA filter as some of the residue/resin particles are small enough to pass through the pre filter, its this process that can cause a shortened life of the HEPA filter as when the residue/resin solidifies on the HEPA it blocks the filter media.

My suggestions are as follows

• Remove the HEPA chemical filter and pre filter and run the extractor (do not run your laser process)
• If the alarm stops put the HEPA chemical filter back in the extractor and run the extractor again
• If the alarm comes on the HEPA chemical filter is blocked.

As you have been using the machine now for some 10/11 months (based on machine build date) I would be replacing the main HEPA chemical filter as a matter of maintenance as the filters should be replace as a matter of course on an annual bases (with normal use) so to have managed this long with MDF is quite good.

Once the main filter has been replaced I would try to slow the extraction rate if at all possible so as to give the pre filter the best chance to capture the residue/resin particles before they can get to the HEPA.

I would also replace the pre filters on a regular basis to protect the HEPA as much as possible.

Yes, the 110610 filter is a filter for our 1500 machines and should be ok to remove Tetrachloroethylene.