Before adding descaler to a La Marzocco, find the manual for your exact machine and version. Check whether it gives an owner procedure, which product and dose to use, and how to rinse.
Find the instructions that apply
Read the model and serial number from the machine label. Find the matching manual and note its edition and maintenance section. If you cannot find a match for your machine and market, ask La Marzocco for the correct manual.
Check which jobs the manual assigns to the owner and which need a technician. Follow an owner descaling procedure only if it is provided for your model. Otherwise, ask La Marzocco or a qualified technician before adding chemicals.
Cafiza is a coffee oil cleaner, not a descaler. Urnex lists its use for coffee residue and oils. Use your machine’s instructions to choose the right product for the job.
Use the machine’s water and service records
Keep the latest water test, filter information and service dates together. We use the water test from your machine and its service history when checking for scale and reviewing its water treatment.
Use your model’s maintenance schedule to plan the next check. Ask your technician how the machine’s use and water-test results affect that schedule.
A rinse needs a defined procedure
Follow the rinse steps in the manual. Do not guess how many tanks to run through or taste the output to check it. If you have used a product and cannot find its required rinse procedure, stop serving drinks from the machine and contact La Marzocco or a technician.
Keep the product name and the steps you followed with your service notes. The technician needs to know what went into the machine.
Slow heat-up is a symptom
If steam gets weaker, heat-up takes longer or temperature drifts, have the machine checked before trying a chemical flush.
Note whether the problem began suddenly or developed over time. Record the displayed message, if any, and whether the behavior changed after maintenance. We use those details to plan the checks before recommending a repair.
When to arrange service
Arrange service if the manual assigns the work to a technician, the machine leaks or shows a fault, or maintenance has not fixed the problem. Leave internal boiler work to a qualified technician. Read your warranty terms before starting maintenance.
For a GB5 or Strada, send the model information and maintenance history when you contact us. We use those details to plan the inspection.
Diagnostics can take up to a week; most repairs run 3–4 weeks. That is exactly why we recommend preventive maintenance: a maintained machine does not sit in a repair queue for a month.