Recip saw blade suggestions

Hi everyone, I'm preparing to be able to work on my basement during the winter. No problem with the workspace, I have a well insulated and heated double garage to work in. My concern is the amount of cutting that I'm going to have to do in a confined space. I've been searching locally for a used dust collector and came across what appears to be a pretty solid commercial unit. I was hoping for some feedback on the unit if possible but also, are there any recommended cleaning and maintenance routines that you can suggest before I have look at it. I have never owned one before in fact, I'm embarrassed to admit I'm not even sure how to empty the bags! Here is a picture of the unit, it is a Master Machinery 3HP 220V. Thanks!

This drill works great and I hate to dismantle anything that is working [If its not broken; don't fix it]. However all the insulation is falling off the power cord and the wiring should be replaced. I opened the drill cover but I cannot disconnect the power cord from the trigger-switch in the drill. I thought I could push an awl or small screwdriver carefully into the switch where with current wires enter the switch releasing the internal clamp and remove the old power wire. I have not succeeded. Do you have a suggestion for removing these wires and installing the new power cord? This drill is not worth the cost of a new switch but I would like to repair it, continue using it, and save it from the land fill.