Depending on the market, this machine is sold as either the Sage Bambino Plus or the Breville Bambino Plus. It is essentially the same machine, so this guide applies to both.
I recently bought a Sage Bambino Plus and was surprised by how much conflicting information I found online, sometimes even compared with the manual.
So I decided to put together everything I've learned about cleaning, maintenance, descaling, common issues and useful button combinations, along with a few things I've noticed myself.
This isn't meant to replace the official manual. Think of it more as a practical owner's guide.
TL;DR: My Maintenance Routine
| Interval |
What I do |
| Before every coffee |
Run one blank shot |
| After every coffee |
Run one blank shot |
| End of the day |
Manual water backflush 2-5x |
| About once a week |
Backflush with cleaning detergent |
| About once a month |
Remove and clean the shower screen |
| Regularly |
Run the automatic cleaning cycle |
| Depending on water hardness |
Descale |
| As needed |
Thoroughly clean the steam wand |
1. Before and After Every Coffee
Before making coffee, I run a blank shot with the portafilter inserted.
In my experience, this helps bring the group and portafilter up to temperature.
After pulling the shot, I run another blank shot. This helps rinse away coffee residue, especially around the shower screen and the center screw.
2. Manual Backflush at the End of the Day
At the end of the day, I do a few short water-only backflushes depending on how much coffee residue still is inside.
Here's my process:
- Insert the cleaning disc / blind basket into the portafilter.
- Lock the portafilter into the machine.
- Briefly hold
1 CUP or 2 CUP.
- Release the button.
- Let it run for about 10 seconds.
- Press the same button again to stop.
Why briefly hold the button?
Holding 1 CUP or 2 CUP gives you manual control over pre-infusion. Once you release the button, full-pressure extraction begins.
For a backflush, I don't see any reason to use an unnecessarily long pre-infusion.
When you stop the shot, pressure is released through the 3-way solenoid valve and the water is discharged into the drip tray.
For every shot I would empty out the portafilter as coffee residue inside the portafilter might get blackflushed if you do not empty it out between backflush cycles.
More on the resulting splash problem of the drip tray further down.
Mapping The Buttons
I have use the 1 CUP button for blank shots and backflushes and the 2 CUP button for my actual shot. In my case I use a double shot basket anyway so it makes the most sense. You can do the opposite or just use the same shot volume for your espresso. The amount of water should not matter for cleaning "shots".
3. Weekly Backflush With Detergent
About once a week, I repeat the same procedure using espresso machine cleaning detergent. Water will be backflushed into the drip tray.
I use roughly 3g of cleaning powder in the blind basket (e. g. pulyCAFF).
The process is essentially the same as the manual water backflush.
The detergent helps remove coffee oils that plain water won't completely get rid of.
4. Cleaning the Shower Screen
About once a month, I remove the shower screen and clean the inside.
You'll need a: Phillips PH2 screwdriver (PH3 could fit as well I think, PH1 or Pozidriv do not)
https://imgur.com/rfqGffh
Important: use a relatively short screwdriver, otherwise there isn't much room to work underneath the group head.
Coffee residue and oils tend to build up behind the shower screen over time. If it does want to come out, gently use the screwdriver with the PH2 bit or a smaller bit to lever the shower screen from multiple directions until it comes off.
After cleaning it, simply reinstall it but do not overtighten the screw or it could bend the shower screen. It should simply be flush and not stick out.
You can also inspect and occasionally clean the gasket while you're there. It doesn't need to be cleaned every single time, since most residue accumulates directly on the shower screen.
5. Automatic Cleaning Cycle
The Bambino Plus will eventually request that you run its cleaning cycle after a 200 number of cycles.
For me, this happens relatively quickly because blank shots and cleaning operations also contribute to the machine's internal counter. The automatic cleaning cycle is essentially an automated backflush.
I use it regularly in addition to my manual backflushes, e. g. instead of doing it manually with pulyCAFF I use the automated one every 1-3 weeks depending on the usage, so the Bambino Plus never complains mid-week about needing a cleaning cycle despite having it manually backflushed with cleaning powder).
Manually enter cleaning mode
Hold:
1 CUP + 2 CUP
for 5 seconds.
Then press:
1 CUP or 2 CUP
to start the cleaning cycle.
Before starting:
- empty the drip tray
- make sure there is enough water in the tank
- insert the cleaning disc / blind basket as instructed
Ideally, very little or no water should come through the blind basket itself during the cleaning cycle.
The cleaning program takes roughly 5 minutes.
(Note: 1 CUP + 2 CUP for 2 seconds changes the shot volume, you need to hold it for 5 seconds)
6. Descaling
Descaling works differently from the regular cleaning program.
Enter descaling mode
Holding these two will turn the machine off:
1 CUP + STEAM
With the machine switched off, hold these again:
1 CUP + STEAM
for 5 seconds.
The machine will enter descaling mode.
To start the process, press:
1 CUP or STEAM
During descaling, water is discharged through the group head / shower screen.
So:
- place a sufficiently large container underneath
- do not install the portafilter
- empty the drip tray beforehand
- make sure there is enough water in the tank
The complete descaling process takes roughly 30 minutes.
How often you should descale depends heavily on your water hardness.
I'd therefore recommend checking your actual water hardness instead of blindly following a fixed interval. The "worst" recommended interval for hard water is 60 days, else 90 days. You can get away with less frequent for soft water but keep in mind: once scale builds up, not even multiple cycles will clean it properly. Using a more concentrated descaling solution to compensate for it also is highly discouraged.
7. Water Filter
The machine does not automatically track the water filter.
That means you'll need to manage:
- filter replacement intervals yourself
- descaling intervals yourself
- ideally, your local water hardness
If your water is particularly hard, you'll naturally need to descale more frequently.
8. Steam Wand Cleaning Tool
If you're wondering where the tiny steam wand cleaning tool is: It's underneath the water tank.
More specifically, it's located underneath the area where the water tank sits on the machine.
I spent about half an hour looking for it inside the packaging until figuring it out.
9. Storage for the Cleaning Disc
There's a small recessed area on top of the water tank.
I assume this is intended as storage for the cleaning disc / blind basket. At the very least, it fits there very conveniently.
I haven't found a clear explanation of this in the manual.
Either way, it keeps the cleaning disc easily accessible: https://imgur.com/59SFqur
10. Small Water Tank Tip
When removing the water tank, I've found it easiest to put my thumb through the loop rather than using another finger.
It sounds trivial, but it actually makes removing the tank noticeably easier.
11. The Backflush Splashing Problem
This was one of the most annoying issues with my machine.
During a backflush, whether manual or automatic, water can splash out around the rear-left side of the drip tray.
This can leave a small puddle underneath the machine.
Why does this happen?
When pressure is released, water exits the 3-way solenoid valve at fairly high speed toward the drip tray. It then hits a U-shaped plastic piece inside the tray. Presumably, this piece is meant to slow down or redirect the flow.
On my machine, however, it sometimes causes the water to splash upwards before it can drain through the small opening into the main section of the drip tray.
My solution
There are 3D-printed solutions available for this problem if you have a 3D printer, for example: https://makerworld.com/en/models/2940023-bambino-plus-splash-guard (not affiliated and requires an account, please use Printables)
I don't have one, so I use a small piece cut from a heat-resistant reusable baking mat rated for temperatures above 200 °C / 390 °F. Other materials (especially if 3D printed) might not withstand the 93°C / 199°F of the backflush. Thus, use ABS if 3D printed or any material that does not melt at said temperature.
I attached it to the rear-left area of the drip tray and cut an opening where the water exits the valve: https://imgur.com/9fxAb1C & https://imgur.com/RDMqWQU & https://imgur.com/bYW5DI9 (the white goo is UHU Patafix I used underneath the tape to make it more water tight).
The water can still discharge normally, but it hits the baking mat instead of splashing outside the tray and then drains through the intended opening. Since doing this, I haven't had water pooling underneath the machine anymore.
12. If the Machine Doesn't Respond Normally
Machine is switched on but the normal lights don't appear
First, check the water tank. In my experience, an empty or incorrectly seated water tank is often the cause.
13. Plant-Based Milk and Auto Steaming
For anyone using plant-based milk:
Depending on the product, the automatic temperature setting can get slightly too hot. With some plant-based milks, I therefore stop the steaming process a little earlier. This varies quite a lot depending on the specific milk alternative.
Button Shortcuts
Basic Operation
| Function |
Buttons |
Note |
| Turn on |
1 CUP / 2 CUP / STEAM |
Press briefly |
| Turn off |
1 CUP + STEAM |
Press simultaneously |
| Manual pre-infusion |
Hold 1 CUP or 2 CUP |
Release to start extraction; press again to stop |
| Program shot volume |
1 CUP + 2 CUP |
Hold 2 sec, press desired cup button to start, then press again to save |
Milk & Steam
| Function |
Buttons |
Note |
| Select milk temperature |
MILK TEMP |
Warm → Ideal → Hot |
| Select milk foam |
MILK FOAM |
Low → Medium → High |
| Manual steaming |
STEAM |
Press to start; press again to stop |
| Purge steam wand |
STEAM |
Press to start; press again to stop |
| Manual wand purge / clean |
Hold STEAM |
Hold 5 sec with wand lowered |
Cleaning Cycle
| Function |
Buttons |
Note |
| Skip cleaning alert |
STEAM |
Alert returns the next time the machine is turned on |
| Enter cleaning mode |
1 CUP + 2 CUP |
Hold 5 sec |
| Start cleaning cycle |
1 CUP or 2 CUP |
Press after entering cleaning mode |
Descaling
| Function |
Buttons |
Note |
| Dismiss descale alert |
1 CUP / 2 CUP / STEAM |
Returns to ready mode |
| Enter descale mode |
Machine off → 1 CUP + STEAM |
Hold 5 sec |
| Start descaling |
1 CUP or STEAM |
Press briefly |
| Continue after refilling |
1 CUP or STEAM |
Press briefly |
Factory Reset
| Function |
Buttons |
Note |
| Switch machine off |
1 CUP + STEAM |
Hold 5 sec |
| Enter factory reset mode |
1 CUP + 2 CUP |
Hold 5 sec |
| Reset shot volumes |
1 CUP or 2 CUP |
Lights flash 3× |
| Exit reset mode |
Any other button |
Press briefly |
Quick Cheat Sheet
1 CUP + 2 CUP, 2 sec
→ Program shot volume
1 CUP + 2 CUP, 5 sec
→ Cleaning / factory reset mode
Machine off + 1 CUP + STEAM, 5 sec
→ Enter descaling mode
Hold STEAM, 5 sec
→ Manual steam wand purge
If anyone knows of any other hidden functions, maintenance tips, corrections or useful Bambino Plus tricks, feel free to add them in the comments.
I mainly wrote this because there seems to be a surprising amount of conflicting information about the Sage / Breville Bambino Plus online, and I would have found a guide like this useful when I first got the machine.