Gaggia SUP 049, Service Manual

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GAGGIA CADORNA 03 OPERATING LOGIC
4/6
3.6. Coffee cycle
Main switch ON START STOP
Time
Coffee grinder
Heating
Pump
Brewing unit gear
motor
Status
Heating Ready Coffee cycle
Time
(Dosage)
Pump operation (flow
meter pulses) in
accordance with the
amount of product
selected.
approx.
45 sec.
*
Notes: * Only with Pre-brewing
Status
Microswitch
(
gear motor)
OFF
ON
Coffee cycle
see below the steps related both coffee and milk cycle:
1. The coffee grinder starts the grinding process (controlled by Time);
2. The brewing unit moves to the brewing position;
3. The preliminary dispensing phase starts (short pump activity, short pause);
3.1. The solenoid valve opens (For milk products );
3.2. The dispensing milk phase starts (For milk products );
3.3. The solenoid valve closes (For milk products );
4. the machine starts dispensing coffee (the pump operation period is defined by the amount of product
dispensed);
5. The gear motor moves to its home position (the dregs are expelled automatically);