Backflushing - Group Head Cleaning
~10 min
Easy
Created on July 28, 2025
112 views
Compatible Machines
Gaggia Classic Pro
Related Links
Routine Overview
Remove coffee oils and residue from the group head and 3-way solenoid valve through backflushing.
Coffee oils built up in the group head can cause bitter and burnt tastes, while a clogged solenoid valve prevents proper pressure release, making it difficult to remove the portafilter.
If water leaks during backflushing: Check the portafilter gasket and replace if necessary.
Routine Steps
Progress
%{completed}/%{total} completed (%{percentage}%)
1. Prepare Blind Basket
Insert the solid backflush basket (blind basket) into the portafilter.
If you don't have a blind basket, you can place a coin in a regular basket.
2. Install Portafilter
Firmly lock the portafilter into the group head.
Lock it slightly tighter than usual.
3. Heat Machine
Wait until the machine is fully heated (temperature indicator light on)
4. Execute Backflush
Press the brew button for 5 seconds, then pause for 5 seconds. Repeat 5-6 times.
You should hear pressure building up - this is normal.
Dirty water will drain into the drip tray.
Do not run continuously for more than 10 seconds to avoid machine stress.
5. Remove and Check
Remove the portafilter and verify that water from the group head runs clear.
If brown water appears, repeat the process 2-3 more times.
6. Final Rinse
Remove the blind basket and run one water-only cycle to clear any remaining residue.
Comments (0)
Login is required to write comments.
Login requiredNo comments yet.
Write the first comment!
Related Routine Recommendations
Medium
Medium
Acaia Lunar
Adjusting Acaia Lunar Auto-Reset Time
machine129 · 08/24/2025
by AI
How to optimize the auto-reset time for your working environment. For busy cafes, 10 seconds is recommended, while 30 seconds works better for slower-paced environments. ℹ️ This is an AI-curated routine. Please share your experiences and...
~10m
~10m
#calibration #inspection #as needed
Hard
Hard
Acaia Lunar
Customizing Acaia Lunar Mode List
machine129 · 08/24/2025
by AI
This guide explains how to customize the mode list that appears when holding the power button. You can hide unnecessary modes and set it to cycle through only frequently used modes. 💡 Press '1' on the keyboard to return to mode descriptions. ℹ️...
~15m
~15m
#troubleshooting
Medium
Medium
Breville Bambino
Breville Bambino Automated Cleaning and Descaling
machine129 · 08/12/2025
by AI
Fully automated cleaning and descaling routine for the Breville Bambino. Triggered automatically through 2 CUP button flashing notification. ℹ️ This is an AI-compiled routine. Please share your user experience and suggestions in the comments!
3
~30m
~30m
#cleaning #descaling #troubleshooting