I want to share my experience with EVOD coils after a couple of month's usage - this would probably apply equally to all bottom-type coil units in ProTanks, iClears, etc.
After a month of vaping on my first EVOD and a noticeable decrease in performance compared to my new mPT2, I eagerly replaced it and took it to bits to confirm what I'd seen on-line. The wick appeared burnt, but the coil itself didn't look as if it had deteriorated at all. Having not yet bought any wire or wick, I put it away for a future rebuild.
When it next happened I thought I'd try cleaning them first before putting them in the rebuild bin. I did this by first soaking them in a cup of boiling water from the kettle, then flushed them under running water before letting them dry on some paper towel. I then soaked them in Vodka for a week - I actually forget about them, found that the Vodka had evaporated, re-filled them, and forgot about them again! The little silicone rubber holders that they come in with ProTanks are very useful for this, as you use very little Vodka.
I then flushed them with Vodka by screwing them into a base and squirting the Vodka into the bottom of the coil with a syringe over the bottle cap, sucking it up again out of the cap with the syringe, and repeating. After a couple of rinses I noticed that the Vodka was still clean, and downed it to confirm this - no taste.
This resulted in both of them appearing as-new, and the one I have tested since works as it first did. Perhaps a good cleaning like this will extend the life of the unit for quite some time before either the coil or wick needs replacement.
After a month of vaping on my first EVOD and a noticeable decrease in performance compared to my new mPT2, I eagerly replaced it and took it to bits to confirm what I'd seen on-line. The wick appeared burnt, but the coil itself didn't look as if it had deteriorated at all. Having not yet bought any wire or wick, I put it away for a future rebuild.
When it next happened I thought I'd try cleaning them first before putting them in the rebuild bin. I did this by first soaking them in a cup of boiling water from the kettle, then flushed them under running water before letting them dry on some paper towel. I then soaked them in Vodka for a week - I actually forget about them, found that the Vodka had evaporated, re-filled them, and forgot about them again! The little silicone rubber holders that they come in with ProTanks are very useful for this, as you use very little Vodka.
I then flushed them with Vodka by screwing them into a base and squirting the Vodka into the bottom of the coil with a syringe over the bottle cap, sucking it up again out of the cap with the syringe, and repeating. After a couple of rinses I noticed that the Vodka was still clean, and downed it to confirm this - no taste.
This resulted in both of them appearing as-new, and the one I have tested since works as it first did. Perhaps a good cleaning like this will extend the life of the unit for quite some time before either the coil or wick needs replacement.