Clean your Zojirushi water boiler regularly. Even if you are How to Clean a Zojirushi Water Boiler. Step 1: Rinse the Water Boiler. The first step to cleaning your Zojirushi water boiler is to rinse it thoroughly with warm water. This will help to remove any loose dirt or debris from the inside of the boiler.. Learn how to keep your Zojirushi water boiler & warmer clean for delicious and hot water. Did you know that the calcium that builds up inside the boiler can.
Allow the boiled vinegar water to rest in the boiler for about 20 minutes.Pour out the liquid and rinse the boiler. You can use a sponge to try and remove some of the scale buildup.. Step 2: Empty Boiler. Begin by emptying the existing water in your Zojirushi water boiler. Make sure all of the water is drained out before proceeding with further cleaning steps.