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DESCALING a Vibiemme Domobar Super

This operation should be performed by an authorized espresso machine technician.

However, should you feel technically competent to descale your espresso machine; these

instructions can be used in conjunction with your user’s manual and the descaler

manufacturer’s instructions to help you complete the process correctly. Please read them

thoroughly before attempting to complete the cleaning process. If you do not feel

comfortable with any step of the process, please hire a professional to complete this

process. Stefano’s Espresso Care is not responsible for any damage to your equipment,

your property, or your person during this cleaning process

Descaling is preventative maintenance that will prolong the life of your espresso machine As

boiling water turns to steam, mineral content leaves behind hard water deposits which can cause

multiple problems in your espresso machine, such as:

¾ Water sensor malfunction and failure

¾ Heating element failure

¾ Clogging of the thermosyphon pipes

¾ Low brewing volume

¾ Poor pressurestat response

¾ Low-temperature grouphead

¾ Drips and leaks from the grouphead

¾ Inability to form pressure in the boiler due to vacuum breaker failure

Depending on the mineral content of your water and frequency of use, your machine should be

descaled approximately four times a year.

Warning: Descaling involves pumping a chemical solution through the machine. These special

chemicals usually contain a food-grade acid that can be hazardous. Carefully follow the

manufacturer’s recommendations and use safety precautions. Even when working carefully,

some solution may splash in your work area. Eye protection and gloves are required when

handling and using these chemicals. Do not allow bystanders in the area unless they are properly

protected. You must also protect the work area both under and around your espresso machine.

Immediately wash off any splashes, particularly on painted surfaces. Do not touch your skin or

eyes during this process as descaler can cause serious irritation and burns to sensitive tissues.

Warning: Descaling involves opening the case of the machine and exposing internal

components. Electrical components and their wiring can present a shock hazard and many parts

inside the machine can get very hot.

Summary of content (7 pages)

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DESCALING a Vibiemme Domobar Super This operation should be performed by an authorized espresso machine technician. However, should you feel technically competent to descale your espresso machine; these instructions can be used in conjunction with your user’s manual and the descaler manufacturer’s instructions to help you complete the process correctly. Please read them thoroughly before attempting to complete the cleaning process.
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Warning: Only use products manufactured explicitly for scale removal in espresso machine boilers. Other products, such as those made for cleaning coffee pots or removing hard water scale from bathrooms must never be used. Never use vinegar or any other chemicals for this purpose. Never add any other cleaning agent to your water tank. Always follow the manufacturer’s recommendation and instructions when descaling an espresso machine.
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enough cold water to reach the proper ratio. Once the solution is cool, use it to fill the water reservoir at least ½ full. 10. Plug the machine in and only turn the power switch to Position I. Allow the boiler to fill. Do not continue to the next step until the pump stops. Please note: Some of the earlier versions had a time-out function which will disengage power to the autofill box after 1 minute.
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15. Note: once the water reaches the top of the boiler, some water will leak from the antivacuum valve (figure 1 below). You can address this issue by wrapping a twist tie around the nipple of the anti-vacuum valve (figure 2 below) in a way that the nipple will stick up mimicking the closed position of the anti-vacuum valve. 16. Replace the divider. Reinstall the reservoir platform and reservoir and insert the hoses once again. If needed, add more descaling solution to the reservoir. 17.
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ounces of cleaner through the hot water spout (repeating the process back at step 17). Excessive scale in the drained water indicates that you need to descale more often. If the water does not look very polluted with hard water deposits that have been dissolved, continue with step 22. 22. Empty and thoroughly wash and rinse the water reservoir, fill it with the water you normally use in the machine, and replace the hose with the particle filter on the end back into the reservoir.
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29. When the drain water is clean and free from the acidic taste of the cleaner, turn the power switch to 0 and UNPLUG the machine. 30. Remove the reservoir, the reservoir platform, and the two screws holding the divider panel. Tip the panel back so you can reach the water sensor probe. After mentally noting the length of probe that extends up and out of the boiler, loosen the small nut that holds the probe, and pull the probe straight up and out of the boiler. Wipe it clean with a cloth.
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37. Now that the machine is up to temperature, make sure the components are clear of descaling agent by flushing a good amount of clean water through the hot water spout, bleeding some steam out of the steam wand, and using the brew cycle to run 4 to 6 ounces of water through the grouphead. Save a few ounces of water, and when it cools, taste it. If the water tastes like the acid used in the cleaning agent, repeat the flush process until the water is free from the acidic taste of the descaler. 38.