Expobar BREWTUS IV - 10. Advanced Brewing Techniques; Preheating Brew Group and Portafilter; Boiler Operation and Heating Cycles

17
10
. Advanced Brewing and Operational Techniques
1.
It will take about 18 min
utes for
the digital display and pressure gau
ge
to
show that both boilers
are up to the set temperature.
I
f you want to brew right
away
,
we recommend doing 3 separate
4
-
ounce
blank
shots
to preheat the
brew group and portafilter. To
pull
a blank shot
,
place your portafilter into the
brew group and ra
ise the control lever to the
UP
position and run 4 ounces of
water through it. If the temperature falls below the set point
,
wait for it to heat
back up and then repeat this procedure.
2.
After the machine has been on for over 35 minutes
,
it is recommended
that
you run 2 ounces of water through the brew group if the machine has been
idle
5 minutes
or more
.
3.
After the programming the machine to brew at a different temperature
,
it may
take
5 to 10
minutes for the boiler temperature to balance out.
4.
The Bre
wtus
has two 1.7
-
liter boilers
,
o
ne for brewing and one for steaming
and dispensing hot water.
When the Brewtus is turned on
,
the steam boiler
will automatically fill with water. The brewing boiler must
first be filled by
lifting the control l
ever and leav
ing it in the
UP
position until the water is
flowing out of the brew group in a steady stream. When the steam boiler is
full
,
the heating element in the steam boiler will be energized and the stea
m
boiler will start to heat up. Once
the steam boiler reache
s operating pressure,
which is around 1.3
Bar
s on the gauge
,
the heating element
in the steam boiler
will turn off
and
the
heating element in the brewing boile
r will turn on.
As the
brew
boiler heats
,
the small LED on the digital display will flash and wil
l
display the current temperature of the boiler. The steam boiler will heat in
around 8 minutes and the bre
w
boiler will heat in
another 8 minutes.