Coffee Cycle - Philips Saeco Exprelia Series Service Manual

EXPRELIA
4.4.

Coffee cycle

Main
switch ON
Time
Coffee grinder
Heating
Pump
Gearmotor:
Brewing unit
Status
Notes: * Only with Pre-brewing
Status
Microswitch
When the machine is switched on, the gearmotor repositions itself as follows:
- It acts on microswitch 1 (see following chapter)
- The gearmotor changes its rotation direction and moves upwards again by approx. 1-2 mm
- The boiler begins to heat the water for approx. 45 sec., at full power, in order to reach the
optimal temperature. The temperature will then remain at a constant level.
1. The coffee grinder starts the grinding process (controlled by pulses generated by a sensor)
2. The gearmotor (brewing unit) moves to the dispensing position
3. Preliminary dispensing phase (short pump activity, short pause)
4. Product dispensing (the pump operation period is defi ned by the amount of product dispensed)
5. The gearmotor moves to its home position (the dregs are expelled automatically)
Saeco International Group
START
approx.
45 sec.
Heating Ready
OFF
Single microswitch gearmotor
Switching on
Coffee cycle
Rev. 00 / June 2010
Pulses
(Dosage)
*
Coffee cycle
ON
04 OPERATING LOGIC
STOP
Pump activity
(turbine pulses)
depending on the
product quantity
selected
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