I plumbed an external dryer just in front of the intake on the plasma. This is the one. It uses replaceable and rechargeable dehumidifying media. (Pop it in a low oven to dry it out.)
Amazon: 3/8" in LINE Desiccant AIR Dryer Compressed AIR Great Pneumatic Tools Spray Booth Plasma Cutter
https://www.amazon.com/dp/B07BR6W6D4/ref=cm_sw_r_cp_apa_i_wF6lCb68RSTQZ