Only refill e liquid after the tank completely empty.
Put the plug into the hole tightly after refill. to make sure, no air coming in and creates pressure inside the tank.
If you feel burnt taste, please find the following solution:
Smoke hardly for several puffs without pressing the button, or pull out the plug for 3 seconds then put back.
If you hear gurgling sound, or vapor begin to reduce when you smoke,
Please find the solution as follow:
Screwed atomizer out battery, pull out mouthpiece, and swing the rest liquid out of atomizer.
If the liquid turns to black after heavy vaping.
Solutions as follows:
Don't smoke continuously for more than 30 puffs,
Stop smoking when the atomizer gets hot , smoke again after the atomizers cool down,
Pull out plug, clear up the rest liquid in the atomizer, and refill new liquid.