Repairable Atomisers, Support
Keras
Sep
Contents
1. Getting Started
The Keras MTA is Atmizone’s Multi-purpose Tank Atomizer concept, which introduces a new category of high-end atomisers. Its two-in-one philosophy tries to fulfil the combined needs of those vapers, who want somehow to easily switch between reliable factory coils and rebuildable deck custom coils.
What is special about the Keras MTA
The Keras MTA features a high-quality deck with a decent building space of about 10.50mm (diameter), designed to allow usual, horizontal type coil builts. In this mode, the Keras is a high-end RTA for consistent vapour production and top notch flavour.
What’s more to it: The deck can easily be removed as an one-part assembly, so as to be replaced by an Aspire Atlantis/Triton or Vaporesso Target cCell factory coil. This way one can transform the Keras into a vape tank for factory coils in just an instant, thus having a high-end RTA and a top quality vape tank for the best factory coils, all in one tank.
Keras MTA features at a glance
- high-quality rebuildable deck with a decent building space of about 10.50mm (diameter), for classic, horizontal type custom single builds.
- Removable rebuildable deck section, switching from RBA to factory coils tank (Triton/Atlantis or Vaporesso target cell coils.)
- Amazingly accurate air flow control ring:- for MTL (mouth-to-lung) in RBA mode (air adjusting from zero up to a max of D2.00mm – internal airflow tube diameter),
– but also for STL (straight-to-lung) hits with a range of factory coils. - One-piece deck positive pole for RTA mode, gold plated self-adjusting positive pole for factory coils mode, to minimise voltage drop and peak performance for TC setups.
- Easy top refill mechanism, by unscrewing top cap.
More info you need to know:
Giga REV version specs:
-Diameter: 22.0mm
-Length: 47.0mm (drip tip and male pole not incl.)
-Weight: ~69g
-Capacity: 3.8ml(rebuildable deck installed)/ 4.0ml(factory coil installed) .
Giga version specs:
-Diameter: 22.0mm
-Length: 54.0mm (drip tip and male pole not incl.)
-Weight: ~81g
-Capacity: 3.8ml(rebuildable deck installed)/ 4.0ml(factory coil installed) .
Nano version specs:
-Diameter: 22.0mm
-Length: 35.0mm(Borosilicate tank installed) / 34.50mm(PMMA tank installed) – (drip tip and male pole not incl.)
-Weight: ~57g
-Capacity: 2.0ml(rebuildable deck installed)/ 2.1ml(factory coil installed) .
Robust, lightweight stainless-steel construction, 316 food-grade SS outer parts, 316 food-grade SS rebuildable deck parts, PEEK thermoplastic polymer electric insulators.
Two Tank Body types: preinstalled Tank made of PMMA Glass approved for medical use, extra Borosilicate Glass Tank with fused ends also in the box.
2. Getting to Know the Parts of the Keras MTA Giga / Giga REV
The revised Keras MTA Giga REV mainly consists of the following parts, as shown in the two detailed graphs below.
Components Graph
O-rings Graph
**All o-rings (red/clear) are silicone 70 o-rings**
The older version of Keras MTA Giga mainly consisted of the following parts, as shown in the two detailed graphs below.
Components Graph
O-rings Graph
**All o-rings (red/clear) are silicon 70 o-rings**
Every box contains a spare o-rings pack with:
- all the above o-rings of a complete Keras Giga, in clear/red version (corresponding spare is the opposite from the one installed) and
- an auxiliary paper o-ring board, useful to identify each o-ring’s size. This can be done by comparing and placing each o-ring on its corresponding place on the board.
If you are missing the paper with the auxiliary o-ring board, just download and print out this file (A4 paper size – uncheck “fit to page” option), and you have an o-rings board in 1:1 scale.
3. Getting to Know the Parts of the Keras MTA Nano
The Keras MTA Nano mainly consists of the following parts, as shown in the two detailed graphs below.
Components Graph
O-rings Graph
**All o-rings (red/clear) are silicon 70 o-rings**
Every box contains a spare o-rings pack with:
- all the above o-rings of a complete Keras Nano, in clear/red version (corresponding spare is the opposite from the one installed) and
- an auxiliary paper o-ring board, useful to identify each o-ring’s size. This can be done by comparing and placing each o-ring on its corresponding place on the board.
If you are missing the paper with the auxiliary o-ring board, just print out this file (A4 paper size – uncheck “fit to page” option), and you have an o-rings board in 1:1 scale.
4. Getting to Know the Parts of the Keras MTA Rebuildable Deck
The Keras MTA Rebuildable Deck mainly consists of the following parts, as shown in the detailed graph below.
5. Getting from Giga / Giga REV to Nano and vice-versa
The Keras MTA is designed in such a way, that it can easily turn from the 2ml Nano version to the 4ml Giga version. Now, with the Giga REV edition, this transformation is even easier, and with fewer parts needed. Below you may see animations presenting both the old type Giga transformation *and* the new Giga REV transformation to Nano mode and vice-versa.
Getting from Giga to Nano animation
Getting from Nano to Giga animation
Getting from Giga REV to Nano animation
Getting from Nano to Giga REV animation
6. Tips and Tricks
Below you can read some really useful tips and tricks about your Keras. Maintenance, rebuilding and any other procedure are much easier if you take into account the following info:
First Use
There is no need for boiling/cleaning preparation of your new Keras before first use. All parts are cleaned in ultrasonic bath and sterilised with hot steam before assembled and put in the box.
However, before using your Keras for the first time and after any washing/maintenance of its components, always lubricate the o-rings and the surfaces of collaborating parts, by using your e-liquid as a lubricating medium. This will ensure long life and optimal function of the device and its real time adjustments.
**No need to overdo with this. A cotton swab is what you just need, to lubricate without excessive quantity of e-liquid. One pass around o-rings and surfaces of collaborating parts will do the job.**
Especially red and transparent white o-rings should be handled with attention while assembling/disassembling, as they are silicon o-rings (thus softer than NBR black o-rings).
PMMA vs Borosilicate Tank
The Keras pre-installed Tank Body is made of foodgrade / medical approved PMMA acrylic (plexi) glass. Please consult the manufacturer of your e-liquid to check if it is PMMA friendly. You should avoid e-liquids that attack PMMA, as this will result to corroding your PMMA Tank Body.
In the box, you may also find a spare Borosilicate high-temp resistant glass Tank Body Replacement. Feel free to use this alternative in the case of PMMA-attacker liquids or for aesthetic purposes.
Air Flow Adjustment
Refilling
1. Easy way to refill:
a. Open top cap
b. Refill by placing the tip of your liquid container inside the gap which lies between the tank walls and the coil body. Make sure you don’t refill inside the coil – liquid should be poured in the gap between the tank walls and the RBA head / coil body.
c. You may easily refill without any problems up to 4/5 of the tank space. When refilling more than that, one might expect a slight over-feeding of liquid, which goes away after a couple of draws or a temporary slight increase of wattage.
d. Complete refilling procedure as quickly as possible. After refilling, screw the top cap back on within a couple of seconds. Do not leave the tank open for more than some seconds after refilling.
2. The Keras Top Cap is designed in such a way, so that it screws down *and* seals simultaneously, leaving any air quantity out of the tank space. This way you avoid the typical flooding of the RBA/ factory coil and the juice leaking which is observed when refilling some of the top refill / bottom air flow atties.
It is not bad though if you want to follow a more strict procedure that is common with top refill atties:
a) Before filling, close the AFC (Air Flow Control) all the way
b) Fill juice as quickly as possible
c) After the tank gets full – attach the top cap and turn the atty upside down immediately
d) Quickly open the AFC (Air Flow Control) fully
e) Let it sit (in this upside down position) for 10-15 seconds
f) Flip it back to regular position and attach it to your mod
g) start vaping
If you experience a slight over-feeding of liquid, it will go away after a couple of draws or a temporary slight increase of wattage. In case this overfeed does not disappear, you are vaping at a lower wattage than your setup needs, or need to fiddle with your setup (if in RBA mode).
RBA Mode
The RBA deck of the Keras is designed for easy use, even by vapers with little experience in rebuilding. However, one needs to have understood the basic principles of rebuilding and coiling, before fiddling with the RBA mode. If you have not rebuilt before, it is best that you get to know the basic procedure at your local vape store with the help of well-trained personnel, ask the advice of experienced fellow vapers and browse online for rebuilding examples by reputable reviewers.
TIP #1:
The endings of the cotton should be placed right above the liquid intake holes. If placed higher, the liquid can enter without any obstruction inside the deck, thus causing a typical flooding and also a bubbling effect.
TIP #2:
General rule:
– Higher VG (thicker) liquids —> more cotton plus place higher above the liquid intake holes of the deck.
– Lower VG (thinner) liquids —> less cotton plus place lower (closer to) the liquid intake holes of the deck.
TIP #3:
Pole screws should be screwed down all the way in order to grab the coil edges firmly in place. Do not overdo with this, as this will end up to wear and tear much quicker than normal. Don’t forget the purpose: The wire should have a firm electric connection with the poles. You won’t need to hung anything from the coil, so there is no need to use all the torque of the world when screwing down.
Rebuilding Example in 4 Steps
Below you may see a rebuilding example in 4 steps. Please note that ideal size and placing of your cotton may vary depending on the above tips / factors. Reproducing the following photos does not ensure 100% success for your built, as this depends on your personal vaping characteristics.
STEP 1
The photo shows indicative size of cotton.
STEP 2
Place primed cotton above liquid intake holes, as photo shows.
STEP 3
Hold your built into place with two fingers, ready to put deck tube on top. Make sure not to misplace cotton edges during this procedure. They should remain right above the liquid intake holes.
STEP 4
Keep holding your built into place with two fingers, and put deck tube on top, ready to screw. Do this gently so as to maintain your built as cautiously set until now. Then, screw deck tube fully into place.
**Important**: After screwing deck tube into place, check your built’s appearance from top open side of deck. If cotton edges are misplaced during previous step , they might need some fidgeting with a small tool (screwdriver) to place them correctly above liquid intake holes. Missing this detail might lead to excess fluid entering your deck, as there will be not cotton edges to balance its flow.
Maintenance
Regular maintenance and cleaning of the device is recommended (e.g. on weekly basis).
– All parts can be washed with light detergent (dish washing detergent) and tap water.
– Assemble all collaborating parts by connecting/ screwing fully, without exaggerating with the force you apply though.
– Show extra attention and apply slightly extra force when screwing:
a. the RBA deck tube on top of the deck.
b. the Giga REV Inner Tube on top of the collaborating RBA Deck Tube or factory coil head.
**ATTENTION**
The force / torque applied when screwing collaborating parts together, is multiplied due to the threading function and thus can be much more intense than we think. This is why you need to take extra care / attention when assembling the parts of the device, especially smaller and more sensitive parts, so as to avoid damage.
Is there a best technique to fill the Keras? I am closing the air hole, top filling, turning upside down and then opening the air hole. Is this optimal? Also, how far should I refill it? I am refilling at about 75% right now. Can I fill up to near 100%? Thanks guys.
Hello Ronald 🙂
For a start, many thanks for being so kind with us and our projects!
What you describe is the generally accepted procedure for refilling top refill atomisers. If you need my subjective opinion, this whole procedure is kind of compulsive. It derives from top refill atomisers that – by design – drag down an air bubble when screwing down the top cap after refill. This is not the case with the Keras, as its top cap is designed so as to seal down excluding any air quantity. To make a long story short, this procedure is not necessary with the Keras – however it is not bad if you are used to it and always follow it with your atomisers.
About refilling, you may easily refill without any problems up to 4/5 of the tank space. When refilling more than that, one might expect a slight over-feeding of liquid, which goes away after a couple of draws or a temporary slight increase of wattage.
I noticed you have changed the o-ring size for the Nano Top Cap from 17 * 1.5 to 18 * 1.5 mm (for serials 1 – 299). As I have number 249, will the new 18 * 1.5 mm fit in my “older version” Top Cap?
It does Tasos, thank you 🙂
Hello Eelco 😉
1. If you are to use an o-ring from the O-rings Kit, please know that the Kit includes both 17×1.5 and 18×1.5 or-rings for this exact reason. In your case, since you have KE-249, you just use the 17×1.5 o-ring.
2. If you are to use a transformation Kit, this does not affect collaboration with the remaining parts (e.g. tank body). New Top Cap (18×1.5 bring groove) will collaborate equally well with the rest of the parts, exactly as the old top cap (17×1.5 bring groove).
Hope I have made things more clear!