Saeco New Royal HD 8930 Service Manual page 23

NEW ROYAL
4.5. Coffee cycle
Main switch ON
Time
Coffee grinder
Heating
Pump
Brewing unit gear
motor
Status
Notes: * Only with Pre-brewing
Status
Microswitch
When the machine is switched on, the gear motor repositions itself as follows:
- It acts on microswitch 1 (see following chapter)
- The gear motor 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 opti-
mal temperature. The temperature will then remain at a constant level.
1. The coffee grinder starts grinding (managed by the doser microswitch)
2. The doser opens
3. The gear motor (brewing unit) moves to the brewing position
4. Preliminary dispensing phase (short pump activity, short pause)
5. Product dispensing (the pump operation period is defi ned by the amount of product dispensed)
6. The gear motor moves to its home position (the dregs are expelled automatically)
Saeco International Group
START
approx.
45 sec.
Heating Ready
OFF
Single microswitch gear motor
Switching on
Coffee cycle
Pulses
(Dosage)
Rev. 01
04 OPERATING LOGIC
Pump activity
(fl ow meter pulses)
depending on the
product quantity
selected
*
Coffee cycle
ON
STOP
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