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In normal operating conditions, the coffee
boiler pressure transducer, while brewing,
can read anywhere from 0-12 bar when
brewing.

3) Brewing after first installation

Once  the  first  installation  procedures  are
finished,  before  proceeding  with  brewing
coffee, please follow these steps:
•  Engage  the  portafilters  by  inserting

them into each group, brew water
through each group for at least two
minutes.

- At least 1 liter for a 1/2 group machine

4) Installing the portafilters

Install the portafilter(s) by inserting them
into the group and rotate the handle from
left  to  right.  When  the  portafilters  are
inserted  properly,  you  can  press  any  of
brew  buttons  to  start  the  flow  of  water
through  the  portafilter.  You  should  allow
hot  water  to  pass  through  the  empty

portafilter(s) for a few seconds each time,
in order to preheat the portafilter.

Note:

It is important to leave the portafilters

installed  in  the  espresso  machine  when
not  in  use.    The  portafilter  must  remain
heated  for  the  brew  process  to  function
correctly.

5) Brewing coffee

Now you can brew an espresso. Disengage
one of the portafilters, fill the filter with
ground coffee, tamp the ground coffee
with the tamper supplied (exerting a force
of 20 kg) and re-engage the portafilter to
the group. Use the tap lever to begin the
brewing process.

Note:

Some baristas believe it is important

to  press  the  brewing  device  prior  to
installing the portafilter to allow the water
to  flush  any  remaining  coffee  oils  and
particles from the group.  Some also flush
just  after  brewing  coffee  for  the  same
reason.  Please experiment to find the best
possible procedure for you.

6) Water pump

Whenever you are brewing coffee, and you
can adjust the pump pressure by turning
the by-pass screw (below the plug located
on the side to which the pump power
supply is connected) clockwise to increase
and counter-clockwise to reduce pressure.
Adjust pressure only when at least one
group is brewing coffee.

Note:

When the heating element in the

coffee  boiler  is  energized,  the  water  will
expand  increasing  the  start-up  pressure.
Once  the  maximum  pressure  is  reached,
the  expansion  (safety)  valve  should  start
working  by  discharging  a  few  drops  of
water,  in  order  to  prevent  such  pressure
from exceeding 11-12 bar.
In  case  the  pressure  exceeds  12  bar,
you  must  adjust  the  expansion  valve  by
unscrewing the cap slightly. If this is not
sufficient, remove the valve and clear away
any calcium deposits. This remedy is valid
also in case the valve remains open in the
drain  position  (i.e.  the  pressure  cannot
increase to 8 bar approx.).

7) General notes for coffee preparation

The portafilters must remain heated since
they  are  at  the  lowest  position  of  the
group itself, and they are partially isolated
due  to  the  rubber  gasket  between  them.
This can be accomplished by leaving the
portafilters installed in the machine when
not  in  use.    The  portafilters  may  also  be

Expansion Valve

Filter Basket

Porta Filter

O-ring Gasket

Double Spout