In order to open the fan, you will need a Philips head screw driver, micro screw driver, and safety glasses.

Start by unplugging the fan and removing the screws that hold the cover into place. My fan had 7 screws; six were obvious but one was hidden behind a plastic cap near the top/back of the unit (arrow in 2nd pic).

In order to access the hidden screw, push in on one side of the cap so that it rotates and then slide the micro screw driver behind it. Pry the cap out and remove that screw.

Next, gently remove the cover. The right side of it will likely have tabs holding it in place (circled in 3rd pic). You will need to push in on the cover at those locations in order to pop the tabs out. Be patient and gentle and eventually you’ll have the cover off.