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Descale the boiler and group with vinegar: Isomac Tea

Before you start

Time
About 720 minutes (overnight soak of about 12 hours, plus heating and flushing)
Tools
blind filter, measuring jug (optional, for the jug method)
Supplies
white vinegar (300 cc mixed with 100 cc water)

Warnings

Steps

  1. Let the machine heat up for 5 minutes.

    From the manual: “Let the machine heat up for 5 minutes;”

  2. Take the cartridge out of the tank filter, if one is fitted.

    From the manual: “remove the cartridge from the filter, if fitted;”

  3. Put 300 cc of white vinegar and 100 cc of water in the tank.

    From the manual: “put 300 cc white vinegar + 100 cc water in the container.”

  4. Alternatively, leave the tank full of water and put the intake pipes into a jug of the same vinegar mix. Optional

    From the manual: “place the pipes in a separate measuring jug containing the vinegar and water solution”

  5. Run water through the group until it smells of vinegar.

    From the manual: “let the water run through the unit until you can smell the vinegar solution in the water;”

  6. Then run water through the steam nozzle until it smells of vinegar too.

    From the manual: “let the water run through the steam nozzle until it begins to smell of vinegar;”

  7. Fit the blind filter in the filter holder and lock it into the group.

    From the manual: “Insert the blind filter in the filter holder and insert the filter holder into the unit;”

  8. Raise the lever for 6-8 seconds until the gauge reads 9-10 bar, then switch the machine off so the group stays under pressure.

    From the manual: “Lift the lever for 6 - 8 seconds until the pressure reads 9 or 10 bar; then switch off the machine.”

  9. Leave it switched off overnight, about 12 hours, then empty the tank.

    From the manual: “leave the machine switched off overnight (approximately 12 hours) then empty out the water container;”

  10. Wash the tank and fill it with clean water.

    From the manual: “wash the container and fill it with clean water;”

  11. Lower the lever to release the pressure in the group.

    From the manual: “depressurise the unit (by lowering the lever);”

  12. Switch on and let it heat for a few minutes; if the pressure passes 9 bar meanwhile, bleed water through the steam nozzle.

    From the manual: “dispense water through the steam nozzle if the pressure should exceed 9 bar while the machine is heating”

  13. With the blind filter fitted, backflush 6 or 7 times as in the backflush routine. Repeat 6-7 times

    From the manual: “back flush the machine 6 or 7 times (see paragraph 6.2);”

  14. Remove the filter holder and run the group for 20 seconds, then pause 15 seconds; do this 5 times. Repeat 5

    From the manual: “dispense water through the unit for periods of 20 seconds, waiting for 15 seconds between each one”

  15. Run water from the steam nozzle until you cannot smell vinegar.

    From the manual: “dispense water from the steam nozzle until you can no longer smell any vinegar;”

  16. Run water through the group until you cannot smell vinegar.

    From the manual: “dispense water through the unit until you can no longer smell any vinegar;”

  17. Refit the blind filter and backflush 5 more times. Repeat 5

    From the manual: “replace the blind filter and back flush 5 times”

  18. Switch off, refill the tank with clean water and start the machine as normal.

    From the manual: “fill the container with clean water and start the machine again as described in the instruction manual;”

  19. Draw 30-40 cc from the group and from the steam nozzle and check neither smells or tastes of vinegar; if one does, flush more and check again.

    From the manual: “dispense 30 - 40 cc of water through the unit into a container and make sure that it does not smell of vinegar”

Sources

Researched on .

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

Applies to