The metal tube in the center of this Clearomizer leads from the mouthpiece to the battery end. Avoid getting liquid in this tube when filling the Clearomizer.
When unfastening the base (atomizer head) to refill the Clearomizer, the seals are temporarily broken and liquid may leak from the mouthpiece or escape into the center tube. Always wrap a cloth or piece of tissue around the mouthpiece when unfastening the base of the Clearomizer.
Gurgling noise or leaks: This is a sign that liquid has found its way into the metal tube in the center of the Clearomizer (and usually occurs after a refill). Ridding the center tube of liquid will resolve the issue. To do so without emptying the tank, remove the Clearomizer from the battery, wrap a cloth or tissue around the battery end of the Clearomizer and blow through the mouthpiece.
The atomizer head of the Protank can unfasten when unscrewing the tube or base. Always secure the atomizer head before reinstalling the base of the Protank.
It is normal to find a small amount of liquid in the battery contact area when removing the Clearomizer or any atomizer. We recommend cleaning the battery before charging it.