In order to prevent the rolling brush from becoming too dry to clean the floor thoroughly, a small amount of water (about 10ml) will be sprayed to wet the rolling brush when the vacuum is powered on. After the vacuum is powered on, you can then choose whether to dispense water according to your preferences.
 

Please note the amount of water being dispensed cannot be adjusted. However, please rest assured that if you trigger the spray water button, it will not spray water continually. Therefore, you do not have to worry about the floor becoming too wet to potentially damage or soil your carpet.