Unic Rumba, Техническая документация

Страница: 18 / 125

- 18 -
9.3b Metering safety system
During the infusion process,
cd
is displayed. This means that the dosing device has been no longer transmitting
impulses to the unit electronic box for 5 seconds.
If the metering interruption is only temporary, the infusion cycle will stop as soon as the number of metered
impulses matches the number of programed impulses.
Obviously the obtained dose will be heavier.
If the metering interruption is permanent, the infusion will stop automatically 105 seconds after
the cycle has started and
c
t
is displayed.
Or stop manually by pressing the Continu/Stop key. Display of
cd
Display of
c
t
or
cd
. The dosing device has stopped transmitting
impulses to the unit electronic box for more than 5 seconds.
Start a coffee cycle.
Check the control LED located on the dosing device.
It does not flash It flashes
The water does not run
through the spout
The water runs through
the spout
- Either there is no more
problem and it all nor-
mally works.
- Or the outgoing signal
wire of the device is dis-
connected.
(terminal: 32-out)
The hydraulic circuit is
blocked
The dosing device no longer
works
Check:
- There is water above
the dosing device
- Coffee filters are clean
- The grind is not too
fine
- The device nozzle is
all right
- The unit valve is
opened
- The unit nozzle
- The unit filter.
Check:
- The device cables
(power 9V)
- The free rotary move-
ment of the turbine
- The magnets drowned
in the turbine are clean
- The dosing device
(outgoing signal)
Replace the dosing device, as
necessary.