N&W Global Vending Krea Installation - Use - Maintenance page 44

TEST
This group of functions allows you to perform tests on
the main components of the machine.
D
ispENsiNg tEsts
This function allows you to obtain for each selection, with
the door open, the dispensing of:
- complete selection
- only water
- only powder
- selection without accessories (test dispensing not avai-
lable for this model)
- accessories only (test dispensing not available for this
model)
s
pEcial fuNctioNs
This group of functions allows you to:
- operate the infuser unit
- release a coffee dose
From the function you can set the time-dosed quantity
of ground coffee.
The time-dosed quantity is expressed as a percentage
of the grinding time of the volumetric quantity
- open a solenoid valve for allowing air to enter in the
event the boiler is emptied for maintenance
- perform manual installation of the boiler (filling the
hydraulic circuit)
- move the espresso unit
- move the espresso unit while the piston is pressing
down
- wash the infuser unit.
© by N&W GLOBAL VENDING S.p.A.
s -
Elf tEst
This function allows you to verify, in semi-automatic
mode, the operation of the main components of the
machine. By pressing the confirmation key, the flashing
message "SELF TEST" will be displayed.
It is possible to abandon each operation and go to the
next one by pressing the exit key; instead, by confirming
with the confirmation key, the self test cycle starts. Some
of the controls are automatic, while others require the
controlled component to be manually operated.
In sequence:
- Activation of ingredient motors for 2 seconds
- Activation of mixer motors for 2 seconds at different
speeds
- Rotation of the infuser unit
- Control of the washing button
- Full waste; the machine remains in standby until the full
waste microswitch is operated manually
- Door lighting test; check that the keyboard lighting is
working
- Switch on the dispensing unit lighting (if present)
- Keyboard check; the machine displays the number
of the button that shall be pushed and it indicates the
latter also by switching on the corresponding LED and
it remains in standby for the actuation before switching
to the next key
- Check that the boiler temperature probe is working
- Checking that the buzzer is working
- Checking that the coin box (if present) is working
- Extractor management; the machine turns the steam
extractor fan on and off during the preparation of instant
drinks.
- Display check; the machine turns on all the points of
the display to allow the visual operation check.
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