Latest Posts

  1. Choosing a Pour Over Brewer

    Choosing a Pour Over Brewer

    Three questions you should ask yourself.

    Read More
  2. Video: Uganda Go To The Rwenzoris

    Video: Uganda Go To The Rwenzoris

    Video and commentary from a trip the Rwenzori range of Western Uganda .

    Read More
  3. Kenya Help a Small Farmer?

    Kenya Help a Small Farmer?

    Kenya small farmers face a lack of support, materials and know-how.

    Read More
  4. Behind The Scenes: Sweet Maria's Roasted Coffee

    Behind The Scenes: Sweet Maria's Roasted Coffee

    Here's how we roast.

    Read More
  5. Aillio Bullet Arrival Update - 10/22

    Aillio Bullet Arrival Update - 10/22

    Some very frustrating news about the next shipment of Bullets.

    Read More
  6. We Want Your Puppy Punchlines

    We Want Your Puppy Punchlines

    Got Dog Jokes?

    Read More
  7. Put your pet in our college...Oops, we meant "Collage"

    Put your pet in our college...Oops, we meant "Collage"

    We want your pet's photo in our 2019 calendar

    Read More
  8. Bullet R1 Roaster Maintenance: Basic Cleaning

    Bullet R1 Roaster Maintenance: Basic Cleaning

    Tips for keeping your Bullet R1 clean. How often depends on how much you roast per week or month! But a clean roaster is a happy roaster...

    Read More
  9. Podcast Episode #23 - Talking With Jonas About Aillio and The Bullet R1 Roaster

    Podcast Episode #23 - Talking With Jonas About Aillio and The Bullet R1 Roaster

    A conversation with the man behind the machine.

    Read More
  10. The Bullet R1 Meet Up. Video & Highlights

    The Bullet R1 Meet Up. Video & Highlights

    Read More
  11. Sweet Maria's Supports Doctors Without Borders

    Sweet Maria's Supports Doctors Without Borders

    Sweet Maria's is supporting Doctors Without Borders throughout September

    Read More
  12. Sulawesi and the Sumatra Effect.

    Sulawesi and the Sumatra Effect.

    Some thoughts on Suluwesi and Indonesia in general while traveling there...

    Read More

Bullet R1 Roaster Maintenance: Basic Cleaning

Bullet R1 Roaster Maintenance: Basic Cleaning
Sept. 19, 2018

The Aillio Bullet R1 Roaster needs your attention ... but luckily not all the time. Before starting a roast session it's wise to check your removable chaff compartment in the back, and the cooling tray filter. If you're doing several back-to-back roasts it's a good idea to check the chaff compartment at some point, and the rubber plug for chaff removal in the back, used with a shop vac, is a great way to pull out chaff between roasts without taking anything apart.

But what about weekly, monthly, yearly maintenance? Well, we have found that the buyers of the Aillio Bullet are a diverse group, some who are very casual, occasional roasters who like the features, the control and the batch capacity; others who are running a business with the Bullet! Those varying uses, a couple roasts a week versus a hundred roasts a month, are going to require different foci on cleaning. But for anyone using a Bullet, if you see, hear or smell something unusual, don't keep roasting! Take a pause and check it out.

If your Bullet is running fine, here is what we recommend for cleaning. Do NOT overclean ... your chaff filter does not need to be sparkly all the time, and if it is you will likely dissolve it in cleaning fluid, ending its usable life far earlier than necessary.

Coffee residue stuck to the impeller and chaff basket Coffee roast residue coating the impeller fan (2 views) and chaff basket. This fan was used for about 75 roasts before removing it to clean.

You should deep-clean your Aillio Bullet R1 at least once a year if you don't roast too often (let's say 15 batches a month) and monthly if you roast heavily (100+ batches a month). Coffee oils, dust and chaff particles will cake itself onto internal surfaces inside your vent system. This build-up can lead to reduced airflow.

You can allow your roaster parts to brown up and cake with roast residue up to a point. For the front IR sensor, the machine is going to indicate when you should clean it. For the fan and vent components in the rear, I believe that 50-80 roasts is a fine span without cleaning, perhaps longer. It really depends on how dark you roast and what coffees you are roasting.

The rear chaff filter basket does not need to be shiny, but ideally it is allowing air to pass through. More important than its appearance, it's color, is what you see when you hold it up to a light source. Does the screen look clogged? If it does, we tap it against a hard surfafce and clean it with a shop vac. If it is still looking clogged, we use a fine brass-bristle brush, (it looks like a toothbrush).

For a deeper cleaning we soak the components in Tabz, or Cleancaf, two types of coffee machine cleaners. These are the type used to run through an automatic drip coffee maker. They are more gentle than the more aggressive espresso machine cleaners. See our video or the images below...

Parts Soaking in Taz Solution The rear impeller fan and two chaff filter baskets from the Aillio Bullet soaking in Tabz solution.

A good soak in a solution made from Tabz will loosen up a lot of the coffee fuzz and build-up from the Bullet's mesh chaff basket and impeller. Tabz are originally for cleaning coffee carafes but we find them useful for cleaning other coffee items like brewers and roasters.  Don't soak aluminum parts in espresso machine cleaners since they will eat away at the aluminum.  You can also use sodium percarbonate. If you brew your own beer, you should be familiar with this as a way to clean and sanitize brewing equipment. I also like Sodium Percarbonate, an oxygen cleaner used by home brewers. But that's me.

Tabz cleaner diluted Tabz is a gentler cleaner, at least more so than espresso machine backflush type cleaners. We make a solution by diluting it in water as you see in this image.
Clean Aillio Bullet R1 parts The chaff screen basket at impeller fan after cleaning with Tabz solution. These were submerged / soaked for several hours and cleaned with a brush. I use Sodium Percarbonate overnight and it works very well.
Rear housing of Aillio Bullet R1 Roaster To clean the housing space where the impeller fan lives (larger arrow), we simply used a cloth wet with Tabz and let it sit. We did not use an excessive amount since our goal was to clean this area without removing the entire rear housing, which is what Aillio recommends for a deep, deep cleaning. 

If your entire rear housing has roast residue on it, you should definitely take the whole thing off the roaster body, remove the motor and electronics from it, and soak. That may be required once a year! To clean the transfer tube (shorter arrow), we use a shapeable cleaning brush we sell for coffee pots. (Link is below). We don't use any liquid solution to clean transfer tube!

Cleaning the Aillio Bullet R1 IR Sensor

The InfraRed sensor on the first and second build of the Bullet measures the drum temperature (it points upward at drum). The Bullet will give you a warning when it needs to be wiped off (a Q-Tip and Alcohol is ideal).

Remove the 6 pan head bolts in the front of the roaster.
Front of Aillio Bullet with faceplate unfastened You can use the rear chaff collector to support the front faceplate of the Bullet roaster so you don't have to take apart anything to do with the front control panel. It's a great chance to check out your drum bearing, etc.
Inside of the Bullet and the IR sensor The IR sensor, that dark dot, was sending an error message on the Bullet that it was time to clean. Aillio recommends cleaning with a single use alcohol pad, or alcohol on a swab, ie QTip. Honestly I used the corner of my t shirt! Note that you do NOT need to clean the surface otherwise, and in fact it will just put more stress on parts and wiring to be over-cleaning the bullet. You can shopvac it with a brush or blow it out with compressed air, but we don't recommend scrubbing the Bullet unnecessarily.

Extra Tip:

Jonas, the Bullet creator, recommends tipping your roaster when it's cooled down, to see if any extra chaff or trapped beans might come loose. This can get coffee out of the transfer tube that gets stuck when you charge the roaster with a batch, and any excess chaff.


Our Video

(which basically repeats the information above...)


Links to Products:

  1. Byron from Sweet Maria's Coffee
    September 25, 2018
    Do you have other methods for cleaning your Bullet? Please share.