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This article is from the Water for coffee FAQ, by Jim Schulman with numerous contributions by others.

4.5 A note to commercial operators (Water treatment and preventive descaling for espresso machines)

With conventional water inlet design, a commercial operation
needs to run boiler safe water. This may have a slightly deletorious
effect on espresso taste, and still necessitates boiler blowdowns.
However, if the demand were out there, it shouldn't be all
that difficult to design a better system. It would run two levels of
water: RO water with a tad of minerals into the steam boiler, and a
harder, tastier water into the heat exchangers. With proper plumbing,
it should be simple to do a nightly citric acid flush of the heat
exchangers, and a monthly boiler flush to keep them scale free.

 

Continue to:

• prev: 4.4 Choosing a water treatment (Water treatment and preventive descaling for espresso machines)
• Index
• next: 4.6 A water treatment for gaggia home machine boilers

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indulgence, water hardness, coffee, corrosion, espresso machine, distillation, mineral, descaling, water treatment