Using this Elkay bottle filling station is easy. First, make sure your existing water cooler is a 115V pushbar - activated EZ style one. Then, retrofit the LZWSRK to it. When you want to fill a bottle, just place it under the filling nozzle. The no - touch sensor will detect it and start filling automatically. The filling will stop after 20 seconds. To maintain it, keep an eye on the LED filter monitor. When it indicates a replacement is needed, change the filter right away. Don't use it with non - compatible water coolers. And always ensure the power supply is stable at 115V and 60HZ.