Using the Elkay LZWSRK Retrofit Bottle Filling Station is easy. First, make sure your existing water cooler is a 115V pushbar - activated EZ style single or bi - level unit. Install the filling station as per the included instructions. When you want to fill your bottle, simply place it under the filler. The no - touch sensor will detect it and start filling the water. The filling will automatically stop after 20 seconds. Keep an eye on the green ticker to see how many plastic bottles you've saved. As for the filter, watch the LED filter monitor. When it indicates a replacement is needed, follow the instructions to change the filter. This will ensure the water remains clean and fresh. Also, regularly clean the exterior of the filling station with a mild cleaner to keep it looking good and functioning well.