RIGID CELLULOSE EVAPORATION COOLING MEDIA REPLACEMENT INSTRUCTIONS WARNING — DISCONNECT POWER TO YOUR EVAPORATION COOLER TO AVOID ELECTRICAL SHOCKS. Your cooling media is made up of alternating shiest having two different angles. The 15 degree angle slopes downward forwards the inside of the cooler. The steeper 45 degree angle should slope downward towards the outside of the cooler (towards the air engineering side).