Gaggia GE compact Instruction Booklet page 32

ENGLISh
7.4 SPECIAL FUNCTIONS
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.
This function ensures the optimum use of the coffee
pellets.
ENGAGEMENT/DEACTIVATION
Start the machine by pressing the main switch keeping
key T5 of unit 1 pressed and wait for the led relative to
key T5 to begin flashing.
Press key T1in order to engage or deactivate the PRE-
INFUSION function.
T1 KEY LED ON : PRE INFUSION: ON
To escape from this condition and return to normal
functions press key T5 again.
7.5 ALARM CONDITION
BOILER (FILLING) LEVEL TIME OUT
This alarm condition occurs whenever the water level is
too low or the level probe remains uncovered. In such a
case the keyboard leds flash.
The filling stage is automatically engaged and to cancel
the alarm conditions switch the machine off and then
on again.
Lack of volumetric counter impulses
On starting a volumetric control coffee cycle, the correct
function of the volumetric counter is checked by the
reading of the number of impulses sent by the same to
the micro-controller.
Should no impulses by recorded for a period exceeding
5 seconds the LED relative to the selected measure begins
flashing (ie. the led relative to key T4).
After one minute in which no impulses are recorded
(volumetric counter time out), the measure underway is
automatically stopped.
T1 T2 T3
32
T4 T5
T4
T4