CRM3605S Descaling Cleaning
~30 min
Easy
Created on August 05, 2025
47 views
Compatible Machines
CRM3605S
Related Links
Routine Overview
The coffee machine must be descaled every 2-3 months to ensure clean water lines and pure coffee taste.
Signs that descaling is needed:
• Little or no water flow from the machine
• Abnormal noise even when the machine is completely cool
• Slower extraction speed
Signs that descaling is needed:
• Little or no water flow from the machine
• Abnormal noise even when the machine is completely cool
• Slower extraction speed
This is an AI-organized routine. Please share your actual experiences and suggestions in the comments!
Routine Steps
Progress
%{completed}/%{total} completed (%{percentage}%)
1. Preparation
Rinse the water tank with clean water and fill to MAX mark (approx. 1.8L).
Mix descaling solution and water in a 4:1 ratio.
For citric acid, follow the descaler instructions.
Mix descaling solution and water in a 4:1 ratio.
For citric acid, follow the descaler instructions.
Professional machine descaler is recommended. Citric acid can be used as an alternative.
For citric acid, use approximately 0.1oz (3g) per 3.4fl oz (100ml) of water.
2. Portafilter Setup
Lock the portafilter into the group head.
Do not remove the filter basket during this process!
3. Power On and Preheat
Press the power button and wait for the front indicator light to turn on, then press the double shot button to dispense water.
Next, turn the steam dial and release hot water for 2 minutes.
Next, turn the steam dial and release hot water for 2 minutes.
Prepare a container to catch the water.
Allow the machine to rest for 1-2 minutes between each cycle.
4. Descaling Solution Flush
Press the double shot button and start extraction until all the diluted descaling solution in the water tank is dispensed.
Never drink water mixed with descaling solution!
5. Clean Water Rinse
Refill the tank with clean tap water and run the coffee extraction process 4 times without coffee grounds to flush the internal lines.
This is the most crucial step! All descaling solution must be completely removed.
6. Steam Wand Cleaning
Clean the group head and steam wand by repeating step 7 at least 3 times.
Purge the steam to thoroughly rinse the inside of the pipe.
Purge the steam to thoroughly rinse the inside of the pipe.
7. Final Check and Completion
Verify all components are properly in place.
Run one more extraction with clean water to ensure no descaling solution remains.
Run one more extraction with clean water to ensure no descaling solution remains.
If coffee taste is unusual, repeat the rinsing process 1-2 more times.
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