I changed the method of retaining the charcoal to the use of cheesecloth back in March and felt it was time to do a full recharge. I have changed the pre-filter three times since then. I also needed to clean the dryer duct hose that runs form the laser to the scrubber as it tends to collect dust in the spiral grooves. I thought I would take a few pics as I put it all back together so you can see my cut on a scrubber. I know there are several designs in use and as long as they work - then good for us.
I pull a vacuum thru my scrubber back to the laser to solve any foul air smells from air leaks, so the air from the laser enters the unit from the top thru the dryer hose and PVC pipe fitting you see on the left of the first pic. You can also see the 1/4" screen wire gride that supports the charcoal charge. The grid is supported by a piece of closet shelving material - the kind with the heavy wire runners about every inch or so.
Cheesecloth is cut and placed on the grid. The extra serves several purposes. It seals the prefilter around the edges and it lets you remove the charcoal charge by lifting the cheesecloth out. This was my first time removing the charcoal and it worked great.
Charcoal charge is added.
Pre-filter (12" x 24" x 1") is installed with cheesecloth pushed in to seal area between filter and box sides.
The top is replaced. Since I pull a vacuum, simple toggle clamps and weather seal works fine.
And then to utilize the space, I have a material rack I place on top of the scrubber to keep our most used sheets at hand.
Back in business. Have a good holiday weekend everyone.