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8.3 DOSAGE PROBLEMS
8.3a 105-second safety system of the coffee unit
Thanks to such a safety system, the maximum infusion time is reduced and ranges from 1 minute to 45 seconds. As
a result, the infusion process automatically stops, if the dosing device no longer works or if the flow capacity is
insufficient so that the motor-pump and the valve of the unit are better protected.
When the safety system is on,
The flow of the water going through the coffee filter is insufficient.
The infusion time corresponding to the programed dose is more than 105 seconds.
The pump is faulty
Check:
- The pressure
- Power supply:
* cables
* condenser
- The mechanical state of
the motor-pump:
* filter
* coupling
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is displayed.
One of the water passage holes
is clogged.
Check the hydraulic circuit:
- Nozzle of dosing device
- Unit nozzle
- Unit filter
- Unit valve
- Coffee filters
- The spout
- 14 -
The coffee grind is too fine:
- Use a coarser grind.
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