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7.3 Coffee delivery
On pressing the corresponding key T1-T2-T3 or T4, the
corresponding delivery solenoid valves are activated for
the time necessary to obtain the required amount of
product as previously programmed (volumetric check).
The LED relative to the selected measure remains on for
the entire coffee delivery time.
The delivery in progress may be suspended before actually
reaching the desired programmed product quantity by
pressing any of the measure keys present on the keyboard
of the unit used for product delivery.
It is also possible to obtain simultaneous coffee delivery
from all the machine units.
7.4 Continuous coffee measures
For continuous coffee measure delivery press key T5 from
the keyboard corresponding to the unit on which one
wishes to operate.
The LED corresponding to key T5 will remain on for the
entire delivery operation.
Avoid keeping it pressed
for more than 5 seconds
or it will enter the
programming mode.
Coffee delivery will continue until measure stop by
pressing key T5, or on obtaining the maximum amount of
product which can be obtained through volumetric control
(6000 impulses) or by means of delivery Time-out
function.
The start of the relative
“continuous” cycle occurs
on the release (within 5
seconds) of key T5 and
not on pressing of the
same. While the STOP
function may be obtained
by pressing it a second
time.
7.5 Special functions
It is possible to engage or deactivate certain special
functions such as PRE- INFUSION and MIXED TEA which
we shall describe below:
Pre-infusion
Our software permits measure configuration so that the
relative delivery of the COFFEE measures through
volumetric control is preceded by pre-infusion.
Delivery of the coffee measure after time 1 (ON) is
suspended for a time 2 (OFF) and is then resumed for the
completion of selection.
On pressing one of the volumetric control measure keys,
the normal delivery cycle is preceded by a short timed
water jet in order to dampen the coffee pellets before
actual delivery stage.
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