Note:
As of November 24, 2024, please follow the instructions in this thread since the filtration stack has been reverted to original spec.
https://talk.vanhack.ca/t/new-laser-filtration-maintenance-procedure/15930
-Adheesh
Want to help with laser cutter maintenance? You now don’t need to be on the laser committee to help with cleaning and changing laser filters, and it needs to be done every couple months. In fact, it needs to be done right now, so any volunteers would be super appreciated!
Here’s how, using pictures I took last time I took it on.
First, grab an 11mm socket and a drill to unscrew all the bolts. One of them does nothing and is just there for looks and moral support.
You’ll find 3 filter types in there, the air flows from the bottom towards the top. First is a course pre-filter sponge, then HEPA filters and finally beds of charcoal.
Starting with washing the pre-filters, I find the least dusty way is to plug the sink with something, gently place the filters in there, and fill the sink until they’re submerged, trying to kick up as little dust as possible. Once submerged they’re good to go for a good few rinses. Drain them off and place them back in the box.
Next, grab the 4 HEPA filters and chuck them in the dumpster, replacing them with new ones.
That’s pretty much it, maybe wipe down the inside of the box with a damp cloth and put the doors back on. Don’t torque the bolts too tight.
The charcoal trays don’t need to be changed every time, just when they’re really clogged. They have to be brought out to the alley and dumped in a garbage bag, and filled with new charcoal.