EN
Warning
Turn the machine off and disconnect the power plug
prior to beginning any maintenance operations.
Clean the hopper and machine surfaces daily using
a cloth dampened with water only.
Once a week remove the hopper and remove the oily
layer left by the coffee beans with a cloth dampened
only with water.
Once a week, use the locking band (A) to remove
the product conveyor hose to the packaging machine
and remove any coffee residue inside with com-
pressed air.
Warning
If the dirt is encrusted and difficult to remove, use
products suitable for cleaning machines for food pro-
cessing.
Clean the heat dissipation fan filter every six months
proceeding as follows.
- Unscrew the four Allen screws (A).
- Remove the fan cover (B) and clean the filter, re-
place it if necessary.
- Remount the cover securing it with the four Allen
screws.x
5.2. Display battery replacement
Watch the video
Warning
Disconnect the power plug and wait until the grinder
cools off.
For the following operations you need:
- 2 and 3 mm Allen keys;
- wire cutters;
- self-locking clamp;
- battery type CR123A
When the symbol
begins flashing on the display,
the battery needs to be replaced performing the op-
erations described below.
By Colombini
Unscrew the two Allen screws located on the display
panel (C).
Remove the display panel (2) and disconnect the con-
nector (D).
Cut the clamp (E) using the wire cutter and remove
the battery (F).
Replace the battery with a new type CR123A one.
Important
Replacement of the battery must be done in a time
less than 5 seconds to prevent the display from go-
ing off with consequent resetting of the data.
If the data on the display is lost, the operations pro-
vided in chapter 5.4 need to be performed.
Important
Be careful not to turn the wheel (6) during the bat-
tery replacement operations.
If the wheel is accidentally turned the operations
provided in chapter 5.4 need to be performed.
Once the battery replacement operation is complet-
ed it needs to be blocked in its support using a new
locking clamp.
- insert the previously removed connector (D), in its
seat.
- mount the display panel (2) securing it with the
two previously removed Allen screws (C).
Environment
Dispose of the flat battery at an appropriate waste dis-
posal site, in accordance with applicable legislation.
Watch the video
Warning
Disconnect the power plug and wait until the grinder
cools off.
For the following operations you need:
- 2 and 3 mm Allen keys;
- 8 and 14 mm spanner.
Caution
The discs must always be replaced in pairs.
Use the micrometric adjustment wheel (6) and set
the disc distance to 0.200.
Unscrew the Allen screw and remove the wheel (6).
Unscrew the two Allen screws (A) located on the dis-
play panel (2).
Remove the display panel (2) and disconnect the
connector (B).
Notes
The patented Colombini grinders have a duration
that can vary from 50 tonnes to 100 tonnes of prod-
uct (roasted coffee beans). This figure varies based
on the degree of coffee roasting and according to the
type of grain size selected for the grinding.
Unscrew the Allen screw (E) located on the front cap.
Remove the cap (F).
Remove the front guard (G).
Remove the power supply plug (H).
Unscrew and remove the four knobs (I) that secure
the discharge chute.
Remove the discharge chute (L).
Loosen the nut shown in figure (M).
With one hand hold the flange and completely un-
screw the previously loosened nut.
Remove the flange with the lower disc (N).
Carefully clean the seat of the three Allen screws
(O) and then unscrew them. Remove the lower disc.
Protection gloves should be used to avoid cuts.
Carefully clean the support surfaces (P). Mount the
new disc.
Even a minimum presence of coffee under the discs
may prevent the correct operation of the grinder.
Carefully clean the seat of the three Allen screws (Q).
Unscrew the three screws and remove the upper disc.
Clean the support surfaces well and then mount the
new upper disc.
Environment
Dispose of the worn disc at an appropriate waste di-
sposal site, in accordance with applicable legislation.
For the correct reassembly perform the operations in
the inverse order.
5.4. Minimum disc distance regulation
Watch the video
This operation should be performed after each disc
replacement.
Operations to perform with the machine operating
(START button on and hopper lever in closed posi-
tion).
Slowly turn the wheel (6) clockwise to bring the disc
closer.
As soon as a slight friction sound can be heard due
to the two discs touching (upper and lower) release
the wheel (6).
Caution
Avoid letting the discs touch for a long time.
Using an object with a fine tip press button A (in-
dicated in the figure), for around 10 seconds; four
zeros will be shown on the display.
Slowly turn wheel (6) anticlockwise until 0.060 is
shown on the display to obtain a minimum safety
distance between the discs.
Using an object with a fine tip press button (A) for
ten seconds to return to the value 0.000.
Turn the wheel (6) anticlockwise until reaching the
desired value for the product to grind.
There are 6 fuses inside the electric panel to protect
the electric and electronic components.
A sudden power surge or overheating of a motor or
component could burn out a fuse.
In this case it needs to be replaced with another with
the same amperage.
1) INVERTER motor protection fuse (20A)
2) INVERTER motor protection fuse (20A)
3) 24V auxiliary power supply protection fuse (2A)
4) 24V auxiliary power supply protection fuse (2A)
5) POWER ON white luminous light button pro-
tection fuse (1A)
6) 24V auxiliary circuit protection fuse (4A)
5.6. Table of anomalies, causes and solutions
ANOMALY
CAUSES
SOLUTIONS
The display
unit does not
come on.
(With the
machine
correctly
powered up).
Battery flat
Replace the
battery as
indicated
in point 5.2
Display
faulty
Contact
specialised
personnel.
Order spare
parts.
The grinder
blocks during
the work cycle.
(Possible
noises
identified in
the area inside
the grinder).
Possible
foreign body
between
the discs.
Turn off the
machine
and contact
specialised
personnel.
The motor
overheated.
Check that
the fan that
dissipates
the interior
heat works
correctly.
Clean the
interior filter.
The grinder
does not start
after having
pressed the
green START
BUTTON.
Possible
fault on the
motor
or electrical
parts
Make a note
of the error
code on the
INVERTER
display and
report it to the
maintenance
technician
The discharged
product is very
powdery.
Disc worn
Replace
the discs.
See ch. 5.3
Hourly
production has
decreased.
Increase
of product
temperature.
C
C
D
2
E
F
6
0.200
6
A
A
2
2
B
E
F
G
H
P
P
Q
Q
Q
6
8
A
A
A
A
A
B
I
I
L
M
N
O
O
O
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