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Breville / Sage Dual Boiler (BES920) maintenance: what the manual says

Sage’s manual lists 10 maintenance jobs for the Dual Boiler. Each is below with how often and the sentence it comes from.

What to do, and how often

Job How often The manual’s sentence
Backflush (detergent) Every 200 shots

“CLEAN ME! will be displayed on LCD to indicate when a cleaning cycle is required (approx. 200 shots).”
Backflush (water) After each coffee making session; 5 × 20 s against the cleaning disc

“After each coffee making session we recommend doing a clear water backflush before you turn off the machine.”
Portafilter & basket soak When basket holes become blocked; soak approx. 20 minutes

“If the holes in the filter baskets become blocked, dissolve a cleaning tablet in hot water and soak filter basket and portafilter in solution for approx. 20 minutes.”
Descale When there is scale build-up in the water tank

“Even if you used the provided water filter, we recommend you to descale if there is scale build-up in the water tank.”
Drip tray empty & clean After each use or when Empty Me! shows

“The drip tray should be removed, emptied and cleaned after each use or when the drip tray indicator is showing Empty Me!”
Group head wipe / flush Periodically

“Periodically run hot water through the machine with the filter basket and portafilter in place, without ground coffee, to rinse out any residual coffee.”
Professional service Any procedure not in the booklet

“Any procedure not listed in this instruction booklet should be performed at an authorised Sage Service Centre.”
Steam wand purge & wipe Directly after texturing milk

“Wipe the steam wand with a damp cloth & purge directly after texturing the milk.”
Steam wand deep clean When tip holes remain blocked

“If steam wand remains blocked, remove the tip using the integrated spanner in the cleaning tool and soak in hot water.”
Water filter / softener replacement Every 3 months or every 40 litres of water, whichever comes first

“Replacing the water filter after three months or 40L will reduce the need to descale the machine.”

The settings

Shot Temp

Range: 86 to 96 °C.

“Press UP or DOWN arrow to adjust SHOT TEMP to the desired setting (range 86°C – 96°C).”

Factory setting: 93 °C

“1. Temperature – 93°C”

Pre-Infusion Duration

“The LCD will display the current Pre-Infusion Duration. Press UP or DOWN arrow to vary time.”

Factory setting: not stated.

Steam Temperature

“Adjust Steam Temperature to control the pressure of the steam being delivered.”

Factory setting: 135 °C

“4. Steam temperature – 135°C”

Step-by-step guides

What the manual does not say

5 jobs with nothing stated
  • Boiler water change
  • Group gasket replacement
  • Shower screen clean
  • Shower screen replacement
  • Water tank clean
Notes from the research
  • The water backflush frequency comes from the Breville US manual; the Sage booklet gives the same procedure with no frequency.
  • Sage (UK) and Breville (US) manuals differ for the same machine: descale on visible scale vs on an LCD alert; filter 3 months/40 L (with a contradictory 2-month date dial) vs a hardness-driven NEW FILTER alert. This record prefers the Sage values.
  • No descale day interval or hardness table; the Hrd1–Hrd5 setting's effect is not published.
  • Group seal, shower screen replacement, water tank cleaning, routine boiler water change and a service interval are not stated.
  • The water filter cartridge is not named.

Sources

Researched on .

Published: the sentence is on the maker’s own page or in the maker’s own document.

Community: the maker’s text, hosted somewhere else, usually by a retailer.