Metos MD Magnum User manual

COFFEE GRINDER
MD Magnum
Installation and Operation Manual
S/N: Rev.: 2.0

22.10.2001 Rev. 2.0
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Dear Customer,
Congratulations on deciding to choose a Metos appliance for your kitchen activities. You
made an excellent choice. We will do our best to make you a satisfied Metos customer
like thousands of customers we have around the world.
Please read this manual carefully. You will learn correct, safe and efficient working meth-
ods in order to get the best possible benefit from the appliance. The instructions and hints
in this manual will give you a quick and easy start, and you will soon note how nice it is
to use the Metos equipment.
All rights are reserved for technical changes.
You will find the main technical data on the rating plate fixed to the equipment. When you
need service or technical help, please let us know the serial number shown on the rating
plate. This will make it easier to provide you with correct service.
For your convenience, space is provided below for you to record your local Metos service
contact information.
METOS TEAM
Metos service phone number:...............................................................................................
Contact person:....................................................................................................................

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1. General .......................................................................................................... 7
1.1 Symbols used in the manual .......................................................................................... 7
1.2 Symbols used on the appliance ...................................................................................... 7
1.3 Checking the relation of the appliance and the manual ................................................. 7
2. Safety instructions ........................................................................................ 8
2.1 Safe use .......................................................................................................................... 8
2.2 Safety instructions in case of malfunction ..................................................................... 8
3. Functional description .................................................................................. 9
3.1 General .......................................................................................................................... 9
3.2 Other than instructed use ............................................................................................... 9
3.3 Construction ................................................................................................................ 10
4. Use instructions ........................................................................................... 12
4.1 Before use .................................................................................................................... 12
4.2 Use ............................................................................................................................... 13
4.2.1 Regulating the grind ............................................................................................. 14
4.2.2 Removing the ground coffee ................................................................................ 14
4.2.3 Regulating the ground coffee doses ..................................................................... 15
4.2.4 Thermal protector ................................................................................................ 15
4.2.5 Coffee preservation .............................................................................................. 15
4.2.6 Layup ................................................................................................................... 15
4.3 Cleaning and maintenance ........................................................................................... 16
4.3.1 General ................................................................................................................. 16
4.3.2 Cleaning the coffee beans receptacle ................................................................... 16
4.3.3 Cleaning the ground coffee distributor ................................................................ 16
4.3.4 External surface ................................................................................................... 16
5. Installation ................................................................................................... 17
5.1 General ........................................................................................................................ 17
5.1.1 Unpacking ............................................................................................................ 17
5.2 Positioning of the appliance ........................................................................................ 18
5.3 Electrical connections .................................................................................................. 18
5.3.1 General ................................................................................................................. 18
5.3.2 Potential-equalizing connection (Option) ............................................................ 19
6. Troubleshooting .......................................................................................... 20
7. Spare parts .................................................................................................. 21

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7.1 Voltage codes .............................................................................................................. 23
8. Technical specifications .............................................................................. 33

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General
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1. General
Carefully read the instructions in this manual as they contain important information re-
garding proper, efficient and safe installation, use and maintenance of the appliance.
Keep this manual in a safe place for eventual use by other operators of the appliance.
The installation of this appliance must be carried out in accordance with the manufactur-
er’s instructions and following local regulations. The connection of the appliance to the
electric and water supply must be carried out by qualified persons only.
Persons using this appliance should be specifically trained in its operation.
Switch off the appliance in the case of failure or malfunction. The periodical function
checks requestedin the manual must be carried out accordingto theinstructions. Have the
appliance serviced by a technically qualified person authorized by the manufacturer and
using original spare parts.
Not complying with the above may put the safety of the appliance in danger.
1.1 Symbols used in the manual
This symbol informs about a situation where a safety risk might be at hand. Given instruc-
tions are mandatory in order to prevent injury.
This symbol informs about the right way to perform in order to prevent bad results, appli-
ance damages or hazardous situations.
This symbol informs about recommendations and hints that help to get the best perform-
ance out of the appliance.
1.2 Symbols used on the appliance
This symbol on a part informs about electrical terminals behind the part. The removal of
the part must be carried out by qualified persons only.
1.3 Checking the relation of the appliance and the manual
The rating plate of the appliance indicates the serial number of the appliance. If the man-
uals are missing, it is possible to order new ones from the manufacturer or the local rep-
resentative. When ordering new manuals it is essential to quote the serial number shown
on the rating plate.

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Safety instructions
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2. Safety instructions
2.1 Safe use
Read carefully the instructions in this manual before using or handling the machine in any
way. The manual contains important instructions regarding the safety precautions to be
taken during use.
To guarantee the efficiency of the Metos coffee grinder equipped and to ensure its proper
operation, it is essential to adhere to the directions provided by the manufacturer and to
make sure that any maintenance work is carried out exclusively by professionally quali-
fied staff.
Never use the machine with wet hands.
2.2 Safety instructions in case of malfunction
If the machine does not function correctly, switch it off, turn off the main switch and call
the service agent.
Only qualified and authorised servicing personnel should be called.
Use only original spare parts.
Maintenance activities performed by unqualified personnel may jeopardise the safety of
the machine.
If the electric cable is damaged, switch off the machine and apply to the servicing depart-
ment for a replacement.
To ensure the safety of the operations and functions of the machine the following meas-
ures must be adhered to:
• Follow all the manufacturers instructions.
• Ensure that the machine is subjected to maintenance operations performed by spe-
cialised personnel.

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Functional description
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3. Functional description
3.1 General
This machine is used for grinding coffee beans and dosing the ground coffee for expresso
coffee machine.
In the Magnum coffee grinder grinding is started automatically when the amount of
ground coffee decreases. Doses its adjustable between 5-9 g. Mechanical stroke count.
3.2 Other than instructed use
Uses of the machine other than that described above may be dangerous to persons and
damage the machine.

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Functional description
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3.3 Construction
The frame is cast aluminium. The Magnum coffee grinder has telescopic press.

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Functional description
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1. Receptacle lid
2. Coffee beans receptacle
3. Receptacle door
4. Machine adjustment screw
5. Coffee distributor lid
6. Ground coffee distributor
7. Coffee tamper
8. Mechanical stroke counter
9. Ground coffee distribution lever
10. ON indicator light
11. On-off switch
12. Filter basket bracket
13. Ground coffee collection tray
14. Data label
15. Wiring diagram
16. Unipotential terminal
17. Dosage regulation screw
18. Grinding reference indicator light

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Use instructions
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4. Use instructions
4.1 Before use
Check that the coffee bean receptacle (2) is correctly positioned on the coffee grinder-dis-
tributor, lift the lid (1) and fill with coffee beans. Check that the gate (3) is completely
open and push towards the inside.
The directions in the figure are:
•A=Open
•B=Close

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Use instructions
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4.2 Use
Before switching on the machine, ensure that the mains switch is on.
Turn switch (11) to position “1” to switch on the machine and check that the indicator
light “ON” (10) is lit.
This machine has an automatic switch-off device that is activated each time the coffee dis-
tributor (6) is sufficiently full of ground coffee. By leaving the on-off switch (11) on po-
sition “1”, the coffee grinder-distributor will automatically start working again when the
level of ground coffee needs to be topped up again.
At the end of working day, switch off the machine by turning the on-off switch (11) to
position “0”. The indicator light (10) is switched off

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Use instructions
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4.2.1 Regulating the grind
The directions in the figure are:
•A=Coarse
•B=Finely
The machine may be adjusted for different grindings (from fine to course) via a screw (4)
as shown on the graded indicator (18).
If the flow of the coffee from the machine is very slow, the coffee is too finely ground.
Turn the screw (4) anti-clockwise to obtain a coarser grind.
If the flow of the coffee from the machine is very fast, the coffee is too coarsely. Turn the
screw (4) clockwise to obtain a finer grind.
4.2.2 Removing the ground coffee
Position the coffee machine filter basket on the bracket (12) and push it until it comes into
contact with the stock (19).
Pull the ground coffee distribution lever (9) towards yourself to obtain a dose of coffee
(one dose corresponds to a cup of coffee) and allow the lever to return to its initial position
automatically.
Turn the filter basket towards the coffee tamper (7) and press the coffee by pushing the
coffee tamper down (7).

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Use instructions
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4.2.3 Regulating the ground coffee doses
To regulate the ground coffee doses for each withdrawal, lifting the lid (5) of the coffee
distributor and turn the dose regulating screw (17).
To increase the amount of ground coffee turn anti-clockwise.
To decrease the amount of ground coffee turn clockwise.
4.2.4 Thermal protector
If the motor becomes overheated due to malfunction, the thermal protector intervenes.
Allow the machine to cool down for several minutes before switching it on again.
If the problem persist, contact the authorized servicing department.
4.2.5 Coffee preservation
Always use fresh coffee beans preserved in jarsor waterproof, sealed bags, away from the
light and in a cool, dry place.
At the end of the working day, try to use all the ground coffee left in the coffee distributor
as it is subject to loss of aroma and will spoil.
4.2.6 Layup
When the machine remains unattended for a long period of time (at night, during the
weekly closing day or during holidays), the following operations shall be performed:
• Switch off via switch.
• Switch off the mains switch.
Non-compliance with these safety measures exonerates the manufacturer from all liability
for malfunctions or damage to persons or items.

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Use instructions
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4.3 Cleaning and maintenance
4.3.1 General
The coffee grinder-distributor machine must be cleaned periodically with special atten-
tion given to those parts that come into contact with the coffee.
Switch off the machine and turn off the main switch.
Do not immerse the machine in water.
4.3.2 Cleaning the coffee beans receptacle
Remove the coffee beans receptacle from the coffee grinder-distributor and wash it with
a damp cloth using detergents and procedures appropriate for objects that are in contact
with foodstuffs, rinse thoroughly and dry.
Ensure that the coffee beans receptacle is perfectly dry before replacing it in the coffee
grinder-distributor.
4.3.3 Cleaning the ground coffee distributor
To clean the coffee distributor, first remove all the ground coffee, remove the lid and with
a brush, clean the inside surfaces and the dosing star, making the latter rotate.
Keep the brush in a closed, protected place and ensure that it is used only for cleaning the
coffee grinder-distributor to avoid contamination with other substances.
Do not clean the coffee distributor and its parts with liquids or damp cloths.
4.3.4 External surface
Use a soft cloth and detergents containing no ammonia and abrasives.

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Installation
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5. Installation
5.1 General
Installation, disassembly and setting should be carried out by qualified technical person-
nel only.
Connections, which must be prepared by the customer:
• Schuko contactbox 1N 10A, Grounding compulsory.
• Switch: Omnipolar switch with 3 mm contact opening. 30 mA dispersion-current
protection. Grounding compulsory. (Option)
Noise of the equipment: 75,6 dB.
5.1.1 Unpacking
After removing the packing make sure the machine is complete. Packing items (plastic
bags, polystyrene foam, nails, etc.) should not be left within the reach of children, as they
could be dangerous.

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Installation
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5.2 Positioning of the appliance
Before connecting the machine, make sure the available electricity supplies correspond to
the specifications on the data plate.
The espresso coffee machine should be placed on a stable flat surface with the bodywork
at a minimum distance of 20 mm from the supporting surface. The electricity supply con-
nections should be close to the machine.
To ensure correct operation and safety, the coffee machine should not be exposed to out-
door weather conditions (rain, sun, ice).
Do not install in rooms (kitchens) cleaned using water jets.
The electrical safety of this machine is guaranteed only if it is correctly connected to an
effective earthing installation as required by the safety regulations in force. This essential
safety requirement should be checked and, if there are any doubts, a complete check of
the installation should be carried out by qualified personnel. The maker cannot be held
responsible for any damage caused by failure to earth the machine.
The use of adapters, multiple sockets and/or extension leads is not recommended. If the
use of such devices is unavoidable, only single or multiple adapters and extension leads
complying with current safety rules should be used, taking care however not to exceed the
limits for electrical current indicatedon the single adapter and theextension leads, and the
maximum power limits indicated on the multiple adapter.
To avoid dangerous overheating, the supply cable should be completely unwound.
5.3 Electrical connections
5.3.1 General
Remember that themanufacturerisnot responsible for damages due to incorrect electrical
connections and, furthermore, that the installer is responsible in case of damage.
Besides the above, check:
• the type of connection indicated on the label found on the power cable.
• that the voltage corresponds to that indicated on the nameplate data found on the
box cover.

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Installation
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5.3.2 Potential-equalizing connection (Option)
This connection, which is the one called for by several norms, avoids electrical potential
differences building up between any equipment that may be installed in the same room.
There is a terminal clip on the under side of the base of the machine to which an external
potential-equalizing wire should be connected.
Use a wire whose cross-sectional area conforms to the existing norms.

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Troubleshooting
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6. Troubleshooting
Operations performed by the customer.
Before calling the servicing department thus avoiding unnecessary costs, check whether
the problem is included in the following list:
Problem Cause Solution
The coffee grinder does not function
and the indicator light is OFF. No electricity. Check that the electricity is on. Check the position of the on-off switch.
The machine does not work and the in-
dicator light is lit. Thermal protector cuts in. Wait for the machine to cool down.
The machine functions correctly, but
ground coffee does not come out. Coffee bean receptacle gate closed. Push the gate towards the inside to open passage of the coffee to be
grounded.