You do have to clean the butane prior to extraction. You can totally blow up your house if you don’t know what you’re doing. I had a veteran extractor blow up one of my houses once. You need to 100% understand the volatile/explosive gasses you are using and know exactly how many ppm/ppb it takes to allow for ignition. You need to understand how to safely handle butane. You have to understand static electricity and grounding. My friend spent 9 months at UC Davis burn center and he is a well-known extractor that writes books. I’m not telling you what to do, but I wouldn’t even be running butane because it snot an FDA approved solvent. I couldn’t buy your products because they are butane extracted. You should sell that rig and buy an ethanol rig. You can die if you don’t know what you’re doing.