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10.1c An insufficient infusion pressure
The infusion pressure is lower than 10 bar
Set the pump as indicated on (
§ 5.3 )
Setting operations are unsuccessful
The pump is faulty The motor-pump is The motor-pump is no
- dirty filter mechanically blocked longer power-supplied
- coil condenser
- damaged pallets (the thermal safety sys-
- broken coupling tem and the circuit-
- faulty by-pass breaker protecting the
motor coil) Check the cable
- Disassemble and restore the pump to its initial condition
- Reset pressure
10.1d A wrong decompression process
When the infusion process is over, you remove the filter-holder and you notice the
grounds pancake is wet.
Check:
- The temperature is too low - Steam pressure
- The infusion time is too short - Grind
(A too coarse grind - a too - Ground coffee dose
light dose - a too low pressure) - Pump pressure
- The decompression circuit is blocked - Spray
- Filter
- Solenoid valve
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