Coffee Lack Detection And Coffee Grinder Blocked; Coffee Cycle - Philips 5000 Service Manual

PHI 5000

3.5 Coffee lack detection and coffee grinder blocked

When the coffee grinder is working, the software monitors the current consumption. If the current value is
very low, the machine concludes that coffee is missing; if the current value is very high, the machine concludes
that the coffee grinder is blocked; instead, if the current value is in the middle, the machine concludes that all
is ok and it goes on to do the product.
Because the current consumption of grinder changes depending on the situations (motor new or old, cold or
hot, coffee blends, etc.), these current targets are not static, but dynamic.

3.6. Coffee cycle

Main switch ON
Time
Coffee grinder
Heating
Pump
Brewing unit gear
motor
Status
Notes: * Only with Pre-brewing
Status
Microswitch
(gear motor)
1. The coffee grinder starts the grinding process (controlled by Time);
2. The gear motor (brewing unit) moves to the brewing position;
3. Preliminary dispensing phase (short pump activity, short pause);
3.1. Solenoid valve opening (For products: Cappuccino and
3.2. Dispensing Milk
3.3. Solenoid valve closing (For products: Cappuccino and
4. Coffee dispensing (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);
Note: For the product cafè au lait, the dispensing of the milk takes place after that of coffee.
approx.
45 sec.
Heating
OFF
(For products: Cappuccino and
START
Time
(Dosage)
Ready
Coffee cycle
Frothed Milk);
Frothed Milk);
Frothed Milk);
03 OPERATING LOGIC
Pump operation (flow
meter pulses) in
accordance with the
amount of product
selected.
*
Coffee cycle
ON
STOP
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