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Descale the brew boiler and steam thermoblock (Apex v2): DF64 Apex
Before you start
- Tools
- container under the group and steam wand
- Supplies
- home espresso machine descaler (4:1 water to descaler, tank filled to MAX (about 1.7 L)); citric acid (substitute) (100:3 water to citric acid, if no descaler is at hand), optional
Warnings
- The steam wand gets very hot while it runs; keep hands clear to avoid burns. Source: MiiCoffee Apex v2 espresso machine user manual (EN)
The machine tells you when
This machine keeps count itself and tells you when this job is due, so follow the machine rather than a calendar.
- What you see
- 'CLn' flashing on the touch screen
- Shown as
- A message on the display
- What it counts
- Shots
- Comes on after
- 500 shots
- How it clears
- automatically when the descaling process is completed, which also resets the count
Steps
- Fill the tank to the MAX line (about 1.7 L) with water and descaler at 4:1, or water and citric acid at 100:3.
From the manual: “Add water and descaler into the water tank to the MAX level (about 1.7L”
- Press ON/OFF and wait until the coffee indicator light stays on.
From the manual: “Press the ON/OFF button and wait for the coffee indicator light to stay on.”
- Press the manual coffee button so solution runs from the group head for about 1 minute, then press it again to stop.
From the manual: “Press the manual coffee making button again to stop the water from the grouphead.”
- Press and hold the manual coffee button to enter steam thermoblock descaling; 'CLn' flashes and the other lights blink.
From the manual: “press and hold the manual coffee making button to enter steam thermoblock descaling mode.”
- Open the steam knob: solution runs from the wand for 1 minute, stops, and 'E-6' shows.
From the manual: “Turn on the steam knob and water will flow from the steam wand for 1 minute and then stop.”
- Close the steam knob to finish that pass.
From the manual: “Turn off the steam know to complete the descaling process”
- Repeat the steam-wand pass 2-3 times for a thorough descale. Repeat 2-3 times
From the manual: “repeat this operation 2-3 times for thorough descaling”
- Press the manual coffee button and let the remaining descaler drain out through the group head.
From the manual: “Press the manual coffee making button water flows out from the grouphead and wait until all the descaler flows out.”
- Wash the tank and fill it to MAX with fresh water.
From the manual: “Clean the water tank, then fill the water tank to the MAX level.”
- Run the group and steam-wand descaling passes again with the fresh water.
From the manual: “Repeat the steps in “Descaling”.”
- Then run hot water until the brew boiler has emptied all its water.
From the manual: “Then make hot water until all the water in the brew boiler comes out.”
- Do the whole fresh-water rinse at least 3 times so every pipe is flushed clean. Repeat at least 3 times
From the manual: “Repeat the steps in “Cleaning” at least 3 times to ensure that all pipes are thoroughly cleaned”
Sources
Researched on .
Published: the sentence is on the maker’s own page or in the maker’s own document.