Cerusem si fabricii (prin reprezentanta) un punct de vedere iar raspunsul suna asa:
"va trimit mai jos explicatiile referitoare la preinfuzia pe PL92T
Elizabeth:
- trebuie setat BLS 0, in acest fel se dezactiveaza apa care vine de la
boiler-ul de abur, iar în schimb este utilizată apa care vine de la
pompă
- apoi trebuie setata valoarea BLP1 pentru tasta de livrare 1 și BLP2
- Începând livrarea, pompa va merge pentru timpul stabilit BLP, apoi se
va opri până la atingerea timpului de preinfuzie selectat
In orice caz, Dave Corbey explica bine aceste detalii aici:
https://sway.office.com/S5J4d9Jp4Y9LdVFx
Settings that affect Steam preinfusion
These settings directly control the pump run time prior to steam
preinfusion. Any
preinfusion time set in LCC includes the time in seconds for the pump
run. e.g if BLS1 is 3
and button 1 is set for a 10 second preinfusion. The pump runs for 3
seconds and stops for
7 seconds. During the time the pump stops the pressure of the steam
boiler is used to
continue the preinfusion.
Values lower than 3 seconds increase the amount of superheated water in
the
brew boiler.
Values higher than 4 seconds start to push more water through the coffee
and
may not be optimal but experiment.
BLS1 = 3 (Button 1 Steam preinfusion pump on time in seconds,
3 is recommended)
BLS2 = 3 (Button 2 Steam preinfusion pump on time in seconds,
3 is recommended)
Note: The reason 3 or 4 seconds is advised for this function is to
significantly reduce the amount of superheated water entering
the brew boiler. You are mainly trying to fill the head space
above the coffee before the pump stops, after which steam
pressure takes over. The push of steam allows a few ml into the
brew boiler but it does not affect brew boiler stability.
Settings that affect Bloom preinfusion
These settings directly control the pump run time prior to bloom
preinfusion. Any
preinfusion time set in LCC includes the time in seconds for the pump
run. e.g if BLP1 is 5
and button 1 is set for a 12 second preinfusion. The pump runs for 5
seconds and stops for
7 seconds. During the time the pump stops no pressure is applied and the
coffee is left to
soak (bloom). This can extract extra and interesting flavours.
Note: you may opt for a lower value for a single basket and a higher
value for
a double. If you use less than 4 you won’t get a great bloom phase. The
objective is to get the coffee puck perfused with some brew water before
the
pump stops for the “bloom phase”
BLP1 = 5 (Button 1 bloom preinfusion pump on time in seconds,
4-7 is recommended I use 5 or 6 for a double basket)
BLP2 = 5 (Button 2 bloom preinfusion pump on time in seconds,
4-7 is recommended I use 5 or 6 for a double basket)"
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