Gaggia Brera Service Manual

Rev. 00 OCTOBER 2009 Page / 06
GAGGIA
04 OPERATING LOGIC
Notes: * Only with Prebrewing
4.3. Coffee cycle operating diagram
MS status
OFF
Single microswitch gearmotor
ON
Switching on
When the machine is switched on, the gearmotor repositions itself as follows:
- It acts on microswitch 1 (see following section)
- The gearmotor changes its rotation direction and moves upwards again by approx. 1-2 mm
- The boiler begins to heat water for approx. 45 seconds. It absorbs all the available heating
power in order to reach the optimal temperature. The temperature will then remain at a con-
stant level.
Coffee cycle
1. The coffee grinder starts the grinding process (controlled by pulses generated by a sensor)
2. The gearmotor (brew group) moves to the dispensing position
3. Preliminary dispensing phase (short pump activity, short pause)
4. Product dispensing (the pump operation period is dened by the amount of product dispensed)
5. The gearmotor moves to its home position (the dregs are expelled automatically).
Main
switch ON
START STOP
Time
Coffee grinder
Heating
Pump
Gearmotor
Brew group
Status Heating Ready Coffee cycle
Pulses
(Dosage)
Pump activity
(turbine pulses)
depending on the
product quantity
selected
approx.
45 sec.
*
03

Gaggia Brera Specifications

General

Type	Espresso
Dimensions (WxDxH)	256 x 447 x 315 mm
Product type	Espresso machine
Water tank capacity	1.2 L
Coffee beans capacity	250 g
Maximum operating pressure	15 bar
Product color	Black
Indication light	Yes
AC input voltage	230 V
AC input frequency	50 Hz

Weight and Dimensions

Weight	8500 g