In theory, the clearomizer should be cleanded every couple of weeks. But in reality, most vapers, once they experience burnt taste or flavour ghosting, just get a new one. Cleaning your clearomizer can help extend it's life by several weeks and it's not exactly hard work either! Here's how:

  1. Remove the clearomizer from the battery (safety first!)
  2. Remove the end of your clearomizer (mouthpiece) in the same way that you would if you were refilling it with e-liquid. Pour it down and flash the tank with running water (warm water works best). Repeat the process until the water that you dump out is clear - that way you'll know the tank is clear and you won't experience the "flavour ghosting".
  3. You can clean the wicks by running them under warm water (be careful to not run the water too hard and do this for each of the wicks) then dry with paper towel. 
  4. Dry your clearomizer. Start off by blowing into it to get rid of as much water as you can, then let it air dry if there's any moisture left. You can use a heair dryer however you need to be careful not to damage the wicks. 
  5. Once it's dry, reassemble the clearomizer and put it back onto your ecig pen.
  6. To clean the coil, use the "dry burning" technique - heat the coil in quick 2 second long bursts. The coil will start glowing orange, and you'll see vapor forming from the residual gunk that is on the coil. Blow away the vapor without directly blowing onto the coil, which can cause damage. When it starts glowing a bright orange you'll know that any e-juice gunk has been removed. Let it cool down and blow on it one last time.

And that's pretty much all you need to do to make the most of your atomiser! Here's a very helpful video tutorial from BCVapor Reviews on how to clean an Innokin iClear16: