Wega Junior, Compatta User Manual
ENGLISH
technician
Via Santi, 9 - 40011 ANZOLA EMILIA (BO) - ITALY
Tel. +39.051.6500900 - Fax +39.051.733701
www.wega.it - commerciale@wega.it
R
SUMMARY follows
Summary
................................................................................................................
6
LEVER MACHINE
......................................................................................................................................................................................
6
DISTRIBUTION MACHINE
..........................................................................................................................................................................
6
TECHNICAL CHARACTERISTICS
.................................................................................................................................................................
INTERNAL COMPONENTS
........................................................................................................................................................................
8
2. PREPARATION OF THE MACHINE
............................................................................................................
9
2.1 UNPACKING
...............................................................................................................................................................
9
2.2 EQUIPMENT PREPARATION
......................................................................................................................................
9
Motor pump
.............................................................................................................................................................................................
9
Filter-holder
.............................................................................................................................................................................................
9
Spouts
.....................................................................................................................................................................................................
9
Softener
...................................................................................................................................................................................................
9
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0
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0
EPU - EVD - EVDT MACHINES
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Warnings
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LEVER MACHINE
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........................................................................................................................... ...........
Machine with INTERNAL MOTOR PUMP
................................................................................................................................................
2
Machine with EXTERNAL MOTOR PUMP
...............................................................................................................................................
........................................................................................................................
2
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................................................................................................................
4. Distribution machine BOILER and EXCHANGERS
..................................................................................
4
4.1 ELECTRIC HEATING
.................................................................................................................................................
4.2 GAS HEATING
..........................................................................................................................................................
4.3 COMBINED GAS + ELECTRIC HEATING
...................................................................................................................
4
.................................................................................................................
........................................................................................................................................................
4
DELIVERY
GROUP
...................................................................................................................................................
.3
...............................................................................................................................................
6. Automatic Water Entry
..........................................................................................................................
6
7. VOLUMETRIC DOSING
...........................................................................................................................
6
8. PRESSURE SWITCH
...............................................................................................................................
6
9. ANTI-FLOODING DEVICE
.......................................................................................................................
7
..............................................................................................................................
7
....................................................................................................................................
................................................................................................................................
7
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7
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8
Gas adjustment
....................................................................................................................................................................................
8
SUMMARY follows
........................................................................................................................................
9
Softener regeneration
..........................................................................................................................................................................
9
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0
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2
0
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0
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2
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2
6
....................................................................................................................
2
2
7
CAPPU
CCIN
O MAKER
..........................................................................................................................
2
2
.........................................................................................................................
2
...........................................................................................................................................
Filter and filter-holder
.........................................................................................................................................................................
2
3
Perforated disk and containment ring
.................................................................................................................................................
2
3
Steam nozzles
.......................................................................................................................................................... ............................
3
Delivery groups (except for ALE version)
............................................................................................................................................
2
4
Body
.......................................................................................................................................................... ...........................................
Grinder-doser
.......................................................................................................................................................................................
2
4
Cappuccinatore
....................................................................................................................................................................................
20
..............................................................................................................
Machine
.......................................................................................................................................................... ......................................
2
................................................................................................................................................................................................
..........................................................................
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ESPRESSO COFFEE MACHINE
1. TECHNICAL CHARACTERISTICS
DISTRIBUTION MACHINE
LEVER MACHINE
14
16
12
13
2
10
4
4
1
3
11
8
7
6
6
15
3
5
9
18
12
3
15
4
1
3
10
4
11
8
7
6
6
2
14
13
15
17
18
5
9
TECHNICAL CHARACTERISTICS
1 Boiler level-check window
2 Gauge
3 Steam gauge
4 Steam nozzle
5 2-cup filter holder
6 Adjustable foot
7 Hot water dispensing spout
8 Gas burner viewing window (if included)
9 1-cup filter holder
10 Gas safety (if included)
11 Gas ignition push button (if included)
12 Machine main switch
13 Cup rest grille
14 Machine on indicator light
15 Hot water knob
16 Lever groups
17 Manual delivery switches
18 Push button panels (for version EVD)
Boiler capacity (lt)
Power supply voltage (V)
Boiler pressure (bar)
Safety valve calibration (bar)
Supply water pressure (bar)
Coffee dispensing pressure (bar)
3,5 5 12 16 22
240 240 - 400 240 - 400
240 - 400
120 - 230 120 - 230 120 - 230
2
1,5 - 5 MAX
8 - 9
Version JUNIOR 1 Group 2 Groups 3 Groups 4 Groups
0,8 - 1,4 MAX
240 - 400
230
7
240
120 - 230
COMPATTA
120 V
1500 2000 2600 ---- ----2000
230 - 240 - 400 V
1500 2600 3400 5000 60002600
Power (W)
INTERNAL COMPONENTS
1 Boiler
2 Delivery group
3 Internal motor pump (if included)
4 Boiler / motor pump pressure gauge
5 Boiler level-check window
6 Internal pump water attachment connection (if included)
7 Manual water pump
8 External pump water attachment connection
9 Drain tub
10 Volumetric dosing device (EVD)
11 Machine main switch
12 Gas system (if included)
13 Electrical heating element
14 Pressure switch
1
3
4
5
14
9
10
2
11
6
12
13
7
8
2. PREPARATION OF THE MACHINE
2.1 UNPACKING
Open the packaging, taking care not to damage it. Remove the
machine protections and the equipment contained in the package.
Take the machine out.
If there is an external motor pump, the motor and the pump are
provided in separate packaging.
2.2 EQUIPMENT PREPARATION
Motor pump
In machines with an external motor, it is necessary to prepare
the pump and the motor.
Fit the 3/8 gas connection with filter (2) at the pump inlet
(arrow ) and the plain 3/8 connection (1) at the pump outlet
(arrow ).
Attention: install the connection with filter (2) at the pump
inlet.
Use the special washers (3) provided for the seal.
To correctly couple the pump and motor, use the appropriate
joint (4) and the spacer ring (5). Lock all of this with the two
clamps
(6).
The pump-motor joint is also installed in machines with an internal
motor, with the exception of the Junior version and the Zecchin
type motors.
Filter-holder
In the housing of the filter holder (7), place the filter clamp spring
(8). Take the two-cup (9) or one-cup (10) filter and press it
firmly into the filter holder.
Spouts
Complete the filter holder by installing the two-cup (12) or one-
cup (13) spout.
In Italy provide for an extension cord (11).
Attention: install the spout on the relative filter holder: one-cup
spout on one-cup filter, etc.
Softener
The resin softener is standard equipment on versions EVD-EVDT.
It is furnished on request in versions ALE-EPU.
For further information, refer to the “Softeners” chapter.
7
8
9
10
11
12
13
2
1
3
4
5
6
3
6
3.1 POSITIONING
Prepare an ample suppor t base for the machine that is suitable to suppor t its weight (1). It is impor tant for all terminals of connections to
the water mains (2), to the electrical mains (3) and to the gas mains (in included), to be easily reachable and in any case in the immediate
vicinity of the machine.
Make sure that there is sufficient space for placing and correctly using the appliance. The grinding-dosing machine (4) must be placed in the
immediate vicinity of the appliance in order to allow for comfortable use of the machine.
It is advisable to equip the working base of the machine with a drawer (5) for used coffee grounds. Preferably this would also have a rubber
device to tap the filter holder against.
3. MACHINE INSTALLATION
1
2
3
4
6
7
8
9
10
11
12
13
14
15
5
WARNING
For correct operation, the machine must rest on a perfectly horizontal surface.
Any alignment adjustments of the ma-
chine must be done by adjusting the feet.(6)
DISTRIBUTION MACHINE
3.2 HYDRAULIC CONNECTION FOR EPU - EVD - EVDT MACHINES
1) Remove any rubber plugs which may be inserted in the tap fixtures of the softener.
2) Connect the water mains
(2) to the softener inlet (7) using the provided hose.
3) rinse resins
from the softener and check that the water, which initially comes out yellowish, comes out clean
4) connect the softener outlet (8) to the external motor pump inlet (9);
5) connect the outlet of the motor pump
(10) to the inlet of the machine (11);
WARNING
If hydraulic connection is not to the water mains but to an external tank, it is advisable to place a non-return valve between the
machine and the tank. The connection pipe between the machine and the external tank must not be greater than 150 cm.
NOTE
In all machines equipped with automatic water fi lling, there is an automatic time control device which allows the boiler to
be fi lled with water within a maximum period of time. This function keeps water from coming out of the valve of the boiler
(fl ooding) and keeps the motor pump from overheating.
If the maximum time is not enough for the boiler to fi ll up completely (machines installed with 3 or 4 groups), turn the machine off and then back on, and repeat the operations shown above.
When the machine is started for the fi rst time, it is advisable to fi ll the boiler manually using the knob (14)
NOTE
All fi lling connections are 3/8 male gas type. The drain tub is connected
with a tube with an internal diameter of 16mm.
6) connect the drain tub of the machine (12) to the sewer discharge (13)
using the special tube provided. Take care to avoid overly tight bends or
kinks, and make sure that there is sufficient inclination for water to flow
out of the drain.
3.3 HYDRAULIC CONNECTION OF ALE MACHINES
1) Remove any rubber plugs which may be inserted in the tap fixtures of
the softener.
2) connect the water mains
(2) to the inlet of the machine (11);
3)
connect the drain tub of the machine (12) to the sewer discharge (13)
using the special tube provided. Take care to avoid overly tight bends or
kinks, and make sure that there is sufficient inclination for water to flow out
of the drain.
Warnings
1)
The water mains must provide cold water for human consumption (potable water) at a pressure between 1 and 5 bar inclusive If the pressure
is greater than 5 bar, connect a pressure reducer upstream from the pump.
2) insert a tap (2) on the water mains supply so that it will be possible to cut off water flow to the machine;
3)
in order to prevent damage to the outer covering, to the valves or to the taps, install the softener where it will be protected from accidental blows;
4)
to prevent the water from freezing, install the softener in rooms with an ambient temperature of more than 0°C;
5)
if there is no softener, connect the water mains (2) directly to the inlet of the external motor pump(9);
6)
if there is an internal motor pump, connect the outlet of the softener (8) (if there is one) or the water mains (2) directly to the machine inlet (11);
7) when connecting the tub of the machine to the sewer drain, avoid overly tight curves or kinks, and make sure that there is sufficient
inclination for water to flow out of the drain.
8)
the drain must be connected to an inspectionable siphon that can be periodically cleaned in order to avoid the backflow of unpleasant odours;
9) to avoid oxidization and damage to the machine over time, do not use iron connections for the hydraulic connections, even if they are
galvanized.
2
11
12
13
LEVER MACHINE
3.5 GAS CONNECTION (if provided for)
Install a pressure reducer upstream from the gas system. When operating on
gas, the machine emits combustion fumes directly into the surroundings where
it is being used. Therefore, gas-powered machines must not be installed in
rooms with a volume of less than 12 m
3
, as described in standards UNI 7129
and UNI 7131.
On the pipe works upstream from the machine, a cut-off cock must be installed.
If flexible hoses rather than stiff pipes are used for connections, they must be
compliant with standard UNI 7140. These hoses must not be more than one
metre long, and they must be firmly attached to the hose connection with a safety
clamp (UNI 7141). They must not be placed near potential heat sources, they
must not reach a temperature greater than 50°C, they must not be subjected
to traction or twisting stress, and they must not have any kinks in them. It must
be possible to inspect them along their entire length, and they must not come
into contact with sharp objects or sharp corners.
The machine is assembled with the methane gas nozzle already installed.
The nozzle for city gas or gas cylinders is provided. Check that the nozzle
is appropriate to the type of gas being used before lighting the burner. The
incoming gas pipe must be equipped with a cut-off cock near the machine (see
the provided gas diagram).
At the cock outlet there will as necessary be installed a flexible hose or a stiff
copper pipe. Pipe connections to the machine must be made in accordance with
current standards in the country of installation. If connection is made with a
flexible hose, first of all inser t the hose into the gas safety hose connection.
If instead you would like to make a stiff connection, you can use a soft copper
pipe Ø6x8, equipped with a 1/4 gas nipple at the gas safety (remove the hose
connection first).
1. Hose connection tube
2. Gas ignition push button
3. Gas self-regulator
4. Gas safety
5. Nozzle
6. Burner
NOTE
To adjust the gas system, refer to chapter12.
The water in the boiler can be heated in various ways: only electrically (machines without gas system), only with gas (version ALE), with a combined
system of gas and electricity (machines with gas system).
6
5
3
2
4
1
WARNING
Always connect the motor pump cable before the machine power supply cable, in accordance with the diagram provided.
Failure to comply with the instructions given above may cause serious damage to the machine an/or to the motor pump
and will invalidate any guarantee. Carry out all electrical connections with the power supply disconnected.
3.4 ELECTRICAL CONNECTION
On the electrical mains, it is advisable to install a main protection switch (A)
Machine with INTERNAL MOTOR PUMP
Connect the power cable as set forth in the chapter “Electrical diagrams” (the cable has a
cross-section and number of wires based on the power and voltage of the machine).
Machine with EXTERNAL MOTOR PUMP
1) Connect the cable to the motor pump (with lesser cross section) to the connector
as shown in the diagram shown alongside.
2) Connect the machine power cable (with greater cross section) as set for th in the
chapter “Electrical diagrams”.
C
B
M
GV
B
M
GV
MP
C Motor pump power cable
MP Motor pump terminal
B Blue
M Brown
GV Yellow-green
A
3.6 STARTING THE MACHINE
Before starting the machine, make sure that the level of water in the boiler is higher than the
minimum level on the level-check window (1). If there is no water (first installation or after boiler
maintenance), it is necessary to fill the boiler in advance, so as to prevent overheating of the
heating element. Proceed as follows:
Switch
Open the water tap of the water mains and of the softener.
Using manual fill (2) fill the boiler with water until the optimal level is restored.
Turn the switch to position “1” and wait for the machine to warm up completely.
Commutator
Open the water tap of the water mains and of the softener.
Turn the switch to position “
1” (electrical power supplied to the pump for automatic boiler filling
and machine services) and wait for the boiler to be automatically filled with water.
Turn the switch to position “
2” (full electrical power supplied, including the heating element in the
boiler) and wait for the machine to warm up completely.
For the installation of the most suitable injector, see the table shown
alongside.
WARNING
Do not under any circumstances attempt to light the gas
without fi rst installing the proper injector. As soon as connection is complete, check for any gas leaks by placing a
soapy solution on all connections.
WARNING
• during the machine’s warm-up phase (roughly 20 minutes), the negative pressure valve will release steam for a few seconds until the
valve itself closes
• before using the machine, run deliveries dry with the filter holder attached for a few seconds to release any air which may be in the
circuit, so that the delivery groups are completely heated
• before using the machine, dispense a few servings of coffee to test the grinding and to check the operating pressure of the machine
1 2
0
3
1 Group ø 1.00 (1.75 kW)
2 Groups
ø 1.10 (2.25 kW)
3 Groups ø 1.35 (3.20 kW)
4 Groups
ø 1.45 (4.00 kW)
Version
METHANE gas
(18 mbar)
ø 0.60 (1.50 kW)
ø 0.65 (1.75 kW)
ø 0.80 (2.50 kW)
ø 0.85 (3.00 kW)
LPG
(28/37 mbar)
1
0
1
2
Switch
Commutator
3.7 EXTERNAL MOTOR PUMP ADJUSTMENT
To adjust operating pressure proceed as follows:
• Use a coffee delivery switch.
• Adjust the pressure by turning the screw located on the pump
(3) so as to obtain a pressure
of between 8 and 9 bar. Tightening the screw increases pressure, and loosening it reduces
pressure. Check the pressure by means of the gauge
(4) located on the front part of the
machine;
• turn off the delivery switch;
4
4. Distribution machine BOILER and EXCHANGERS
The boiler is constructed in copper sheet metal (1), to which the heat exchangers are assembled which in turn are connected to the delivery
group. Water for coffee delivery is taken directly from the heat exchanger. During delivery cold water is sent to the inside of the exchanger
by means of the motor pump. Inside the heat exchanger, cold water and the pre-existing hot water are mixed, thus obtaining optimal water
temperature for coffee infusion. The ALE does not have a heat exchanger, therefore water is taken directly from the boiler.
4.1 ELECTRIC HEATING
5. COFFEE DELIVERY GROUPS
The delivery group and the heat exchanger are the fundamental components in obtaining
espresso coffee. Specifically, the purpose of the group is to dispense the coffee.
The water is heated in the boiler by means of an electrical heating element that is immerged in the
water(2).
4.2 GAS HEATING
Gas heating is obtained by supplying the flame of the burner located under the boiler.
4.3 COMBINED GAS + ELECTRIC HEATING
In machines equipped with both systems, it is possible to combine the heating types.
5.1 LEVER GROUP
The lever group uses the boiler pressure and water. This system does not require heat
exchangers.
When the lever (1) is lowered, the spring (2) inside the group is compressed: the piston
(3) raises, allowing water to enter the pre-infusion jacket. When the lever is released,
the piston compresses the water to 8-10 bar, allowing delivery of espresso coffee. The
non-return ball valve
(4) keeps water from flowing back into the boiler (5).
2
1
3
2
4
5
1
Phase 1
Lowering the lever.
Phase 2
Pre-infusion for
3÷5 seconds.
Phase 3
Release of lever
and delivery
of the coffee.
5.2 DELIVERY GROUP
In this system, the delivery group (1) is heated by a thermosiphon circuit (2) connected to the heat exchanger (3). The same water is used
for coffee delivery, thus ensuring the same temperature for all coffee servings.
• activation of the solenoid valve and of the pump allow cold water to enter the exchanger (3) through the injector (4).
• from the exchanger
(3) the boiler water is carried to the group (4) for delivery;
• the pump allows the increase of the pressure of the water flow up to 8-9 bar for delivery.
The injector
(4) and the flow reducer (5) are impor tant components for the operation of the delivery group.
To increase the coffee extraction temperature, remove the flow reducer (5) or replace it with one of a greater diameter. To decrease the
temperature, replace it with one of a smaller diameter.
If necessary, the exchangers can be replaced by removing the flange and disconnecting the relative pipes of the hydraulic circuit. These operations should be carried out after the machine has been switched down and has cooled off. Always replace the seals.
inlet
water
delivery
coffee
in delivery
3
4
5
at rest
1
2
3
5.3 DELIVERY DELIVERY
This group functions with a double-outlet type exchanger.
The delivery is controlled with a manual valve system. The opening and
the closing of the valves for the passage of the water is operated by
a lever placed beside the group which, in turn, operates a cam inside
the group, opening and closing the water.
6. Automatic Water Entry
The AEA system (Automatic Water Entry) is for checking the boiler level. It is composed of:
• sensor inserted in the boiler (1), composed of a stainless steel rod;
• control unit (2) standard on EVD machines, electronic level regulator on other
versions
(3);
• hydraulic circuit with a solenoid valve controlled by the regulator.
The electronic control unit controls the level of water in the boiler. When the level of water
in the boiler drops, the contact with the probe is interrupted. The control unit sends and
impulse to the entry solenoid valve (1) and to the motor pump (2), which act to restore
the normal level of water in the boiler.
To avoid possible flooding due to machine malfunctions or leaks in the hydraulic circuit, the
electronic control unit includes a timing device that cuts off automatic filling after a certain
time (roughly 30 seconds). The LED
(4) located on the front of the machine body comes
on to indicate activation of this system. During the installation of machines with three or
four groups the initial water filling time may exceed the established time limit. In this event,
just switch the machine off and then back on to restore normal operating conditions.
7. VOLUMETRIC DOSING
The volumetric dosing device installed on the EVD electronic machines serves the purpose
of measuring the quantity of water sent to the group of espresso delivery.
The dosing device generates an electrical impulse which is sent to the electronic control
unit. This impulse is read by the control unit and memorized during the programming of
the dose.
The flashing of the LED
(5) indicates that the electrical impulse has been sent from the
dosing device to the control unit.
8. PRESSURE SWITCH
The pressure switch makes it possible to control boiler pressure by activating or bypassing
the heating element in the boiler.
Any calibration of the pressure switch which may be required can be carried out with the machine in operation by means of the screw (6) located on the body of the component.
1
2
3
4
5
6
WARNING
Always check the level of the water in the boiler by means of the level-check
window placed on the front of the machine.
WARNING
The internal contacts of the pressure switch may be subject to oxidization. It
is recommended to periodically clean the contacts with anti-oxidant spray.
11. VALVE GROUP
The valves are devices whose purpose is to ensure the safety and proper operation
of the machine.
10. PUMPING SYSTEM
This is a component that serves the purpose of feeding the machine, raising the
water pressure to 8-9 bar for the delivery of the coffee and for automatic filling
of the boiler.
9. ANTI-FLOODING DEVICE
The cover installed on the pressure modulating switch makes it possible, by means
of the special tube, to collect and carry to the drain tub any water which may exit
the boiler to due any malfunction of the machine.
11.1 NEGATIVE PRESSURE VALVE
The purpose of the negative pressure valve is to prevent the backflow of liquids
through the steam nozzle when they are being heated. Fur thermore, the excess
air is eliminated inside the boiler during the heating phase of the machine.
11.2 SAFETY OR PRESSURE RELIEF VALVE
The pressure relief valve guarantees that the pressure in the boiler does not go
above 2 bar. If there is a malfunction, the capacity of the valve is such that it can
eliminate all of the excess pressure in the valve.
11.3 EXPANSION VALVE - NON-RETURN VALVE
This is a valve consisting of an expansion valve and a non-return valve.
• Expansion valve: the cold water sent from the pump to the heat exchangers
is heated. This heating causes an increase in the volume of water. To limit
increases of pressure in the hydraulic circuit, the valve limits the maximum
internal pressure of the circuit to 12 bar.
• non-return valve: Its function is that of preventing the back flow of water
from the exchangers in the hydraulic circuit.
NOTE
On all machines with four groups, two pressure relief valves are installed.
valve
EXPANSION
valve
NON-RETURN
12. GAS SYSTEM
The gas system is useful in heating the water in the boiler. It does not, except in special cases, substitute the electrical heating system, but
rather works along with it.
For machines with levers, operation may be either electric or gas.
Gas adjustment
• Lighting the burner
• loosen the locknut
(1);
• give the screw two turns and place the minimum regulator pin
(2) so as to have maximum opening of the gas minimum passage;
• wait for boiler pressure to reach 1.4 bar (see boiler gauge);
• turn the minimum pin
(2) clockwise until the burner flame is barely visible (pilot flame);
• lower the pressure in the boiler down to 1 bar;
• turn the adjustment screw for the maximum clockwise until the flame is up to maximum;
• tighten the locknut thus locking the screw.
The operation described above places the machine in an operating range of 1.2-1.3 bar. If you want to increase or decrease operating pressure
in the boiler, proceed as above, varying the parameters as follows:
to decrease:
• set the maximum to 1.3 bar and the minimum to 0.9 bar. You will obtain pressure in the boiler of 1.1-1.2 bar.
to increase:
• adjust the maximum to 1.5 bar and the minimum to 1.1 bar. You will obtain a pressure in the boiler of 1.3-1.4 bar (this is the maximum
recommended pressure limit)
1
2
WARNING
If you decide to use only the gas heating system, no electrical devices are active, including automatic boiler fi lling.
WARNING
When operating on gas, the machine emits combustion fumes directly into the surroundings where it is being used. Therefore, gas-powered machines must not be installed in rooms with a volume of less than 12 m
3
, as described in standards
UNI 7129 and UNI 7131.
In closed rooms, always provide ventilation openings to release any possible gas leaks.
13. SOFTENERS
Mains water contains insoluble salts, which cause the build-up of lime scale deposits in the boiler and in other parts of the machine. The
softener makes it possible to eliminate or substantially reduce the presence of these mineral salts.
The resin softener has the proper ty of retaining the calcium contained in the water. For this reason after a certain period the resins are
saturated and are to be regenerated with coarse kitchen salt (NaCL, sodium chloride) or special water softening salt. It is very important to
regenerate the softener within the established times.
The regeneration is to be done regularly every 15 days. However, in locations with very hard water, it will be necessary to regenerate more
frequently. The same is true of places in which there is a large consumption of hot water for tea or other uses.
Softener regeneration
Proceed as follows:
• move levers
(2) and (5) from left to right;
• Remove the lid by loosening the knob
(1).
• Release enough water through the pipe
(3) to make room for the amount of salt as required depending on the model (see table).
• Clean any salt or resin residue from the gasket located on the lid.
• Put the lid back in place by screwing the knob
(1) down securely and move the lever (2) back from right to left.
• Let the salt water drain from the small tube
(4) until the water is no longer salty (about 30-60 minutes). The salt allows the accumulated
mineral salts to be released.
• Bring the lever
(5) from right to left back to its initial position.
1
2
3
4
5
In order to keep the softener and hence the machine in
perfect operating condition, it is necessary to perform
regeneration periodically based on the use of the softener
and the hardness of the water that is used.
The table alongside shows the values of the quantity of
softened water based on the hardness of the water in the
various units of measure:
- F°: French degree
- D°: German degree
- mg CaCO
3
For further information on installation, start-up and regeneration of the softener, refer to the relative instruction manual.
WARNING
The build-up of lime scale in the hydraulic circuit and boiler inhibit thermal exchange, thus compromising proper operation
of the machine. Heavy incrustation in the boiler may cause long machine shutdowns and in any case invalidate any guarantee, because this symptom indicates that regeneration has been neglected.
8 litres 1.0 kg
12 litres
1.5 kg
16 litres 2.0 kg
Model
softener
Amount
of salt
F° 30°
D° 16.5°
mg CaCO
3
300
8 litres
1000 lt
Amount of softened water based on hardness
40°
22°
400
900 lt
60°
33°
600
700 lt
80°
44°
800
500 lt 1.0 kg
salt
12 litres
1500 lt 1350 lt 1050 lt 750 lt 1.5 kg
16 litres
2100 lt 1800 lt 1400 lt 1000 lt 2.0 kg
14. ELECTRONIC CONTROL UNIT
The electronic control unit is installed on machines with volumetric dosing. Its purpose is to control the dose of coffee electronically by means of the water flowing
through the dosing device and to check filling of the water entry in the boiler.
This control unit is set up to be connected to the delivery accounting systems by
means of a specific interface device.
15.1 EVD PUSH BUTTON PANEL
The push button panel is connected to the control unit which allows selection and programming of the doses of coffee.
Programming is carried out in the following way:
• Place the programming lever (1) in the ON position. It is located under the front
right-hand panel of the body;
• put the coffee cup under the dispensing spout.
• press the PROG/STOP key
(2) and all dose key LED will come on;
• press the desired dose key
(3);
• when the desired dose has been attained, confirm by pressing the PROG/STOP key (2)
;
• Repeat this operation for the other dose keys.
• upon completion of programming, place the programming lever
(1) back in the OFF
position.
1
In some models, the programming lever has been eliminated because to access program, and it is enough to press the PROG/STOP key for
at least 5 seconds with all push button panel LED coming on. Also, confirmation of the dose can be given by pressing either the PROG/STOP
key or the selected dose key.
In other models to access programming it is necessary to use a special key switch.
To exit programming it is sufficient to wait a few seconds.
NOTE
The programming of every dose must be done with ground coffee and not with previously used grounds.
With machines having two or three groups, by fi rst programming the right-hand push buttons the others are automatically
programmed. It is however both possible and advisable to program the push button panels independently, always starting
from the right-hand push button panel.
15. ELECTRONIC PUSH BUTTON PANELS
3
2
3
2
STOP
PROG
3
2
15.2 TH JUNIOR PUSH BUTTON PANEL
This push button panel is installed mainly on JUNIOR models and on some EVD volumetric dosing machines.
Programming is carried out in the following way:
• put the coffee cup under the dispensing spout.
• Press the PROG/STOP key
(1) for at least 5 seconds until all dose key LED are on.
• Press the desired dose key
(2).
• To confirm the dose press the dose key
(2) or the PROG/STOP key again (1).
• Repeat this operation for the other dose keys.
• Programming will be terminated automatically after a few seconds.
15.3 EVDT TIMER PUSH BUTTON PANEL
The timer is installed on EVDT machines and controls delivery time of the coffee.
Programming is carried out in the following way:
1) Press and hold down the STOP/PROG key (1) for 5 seconds and check that all of the LED on the push button panel come on. This confirms
correct entry into the programming phase.
2) Press on of the two dose keys
(2) to program. The LED corresponding to the CONT key (continue) and to the key of the dose being
programmed stay on.
3) When the desired amount of coffee in the cup has been reached, press the STOP/PROG key (1) or the key of the dose being programmed
to stop delivery and memorize the new value (the duration of the dose of coffee is calculated in seconds). At the same time, the LED for
the dose which is still to be programmed comes back on, while the LED for the programmed dose stays off.
4) Proceed with the programming of the other coffee dose by pressing the other dose key. Once the desired amount of coffee in the cup
has been reached, press the dose key or the STOP/PROG again
(1).
5) To exit programming, press and hold down the STOP/PROG (1) key for more than 5 seconds.
NOTE
It is possible to re-program the coffee dose that you have just fi nished programming (LED off) without necessarily having
to turn the system off and back on or exiting the programming phase.
The system automatically exits programming status approximately 10 seconds after the last operation.
1
2
1
2
Programming
• Place the programming lever in the ON position (1) it is located under the
front right panel of the body
;
• put the cup under the hot water nozzle (2);
• press the PROG/STOP key (3) and all dose key LED will come on;
• press the key to dispense hot water (4);
• when the desired dose has been attained, confirm by pressing the PROG/STOP
key
(3)
;
•
upon completion of programming, place the programming lever
(1)
back in
the OFF position
33
2
1
4
1
WARNING
Be sure to keep the cappuccino maker clean at all times as described
in the chapter “Cleaning”.
• Put the suction tube in the milk;
• place the pitcher under the spout of the cappuccino maker;
• turn the steam tap counter-clockwise. When the desired level is reached, close the steam tap;
• pour the foamed milk into the cups with the coffee.
NOTE
To obtain warm milk without foam, lift the tab (1) upwards. For best
results, we recommend not dispensing directly into the coffee cup,
but rather into a pitcher. From there, pour the foamed milk into the
coffee.
1
CAPPUCCINO position WARM MILK position
16. DISPENSING HOT WATER
17. CAPPUCCINO MAKER
19. CLEANING
For perfect cleaning and efficiency of the appliance, several simple cleaning operations are necessary on the functional parts and accessories
as well as the body panels.
The indications given here are applicable for normal use of the coffee machine. If the machine is heavily used then cleaning should be performed more frequently.
Filter and filter-holder
The filters and the relative filter-holders must be cleaned daily in hot water. The best thing to do is to
let them soak in hot water overnight so that the fatty coffee deposits can dissolve.
It is advisable to add an envelope or tablet of special detergent to the water, and then to rinse
everything off with water.
Failure to clean the filters and filter holders daily will compromise the quality of the coffee and will
also cause problems such as bad extraction and coffee grounds at the bottom of the cup.
Perforated disk and containment ring
Both the shower plate (4) and its containment ring (3) should be cleaned weekly in hot water. To
do this loosen the screw (5) and remove the two elements from the dispensing unit.
Steam nozzles
The steam pipes must be kept clean at all times. Check the ends of the steam nozzles and clean
them monthly, clearing out the exit holes with a small needle.
1
2
18. CUP HEATING DEVICE
The cup heating device is for heating cups before they are used.
• Place the cups on the upper surface
(1) of the coffee machine.
• Start the electric heating element with the switch
(2) or with the push
button panel (e.g. VENUS).
WARNING
For safety reasons we advise against putting cloths or other
objects on the upper surface of the machine as they could obstruct
normal air circulation.
Delivery groups (except for ALE version)
The cleaning of the internal parts of the delivery groups is to be performed weekly in the following
manner:
• replace the normal filter of the filter-holder with a solid one;
• pour a teaspoon of a suitable detergent powder on the solid filter, and attach the filter-holder
to the group;
• use the delivery switch to set the group in operation;
• repeat the above operations until the water comes out clean;
• turn off and remove the filter-holder from the group;
• rinse a final time, so as to remove any residual detergent.
WARNING
Do not use a solid fi lter to clean the machines with a lever group (ALE)
Body
The body panels should be cleaned with a cloth soaked in warm water. Do not use abrasive detergents since the panels could get scratched.
Grinder-doser
Every week clean the bell jar and the dosing device with a cloth soaked in lukewarm water, both inside and out
.
4
5
3
Cappuccinatore
Si raccomanda una par ticolare cura nella pulizia del cappuccinatore seguendo le
modalità qui riportate
:
• eseguire un primo lavaggio immergendo il tubo di aspirazione in acqua ed
effettuare una erogazione
per qualche secondo;
• ruotare il corpo rotante (1) di 90° in pos. B (chiusura del condotto di
fuoriuscita del latte);
• tenendo il tubo di aspirazione latte in aria, effettuare l’erogazione di vapore
(funzionamento a vuoto del cappuccinatore);
• attendere circa 20 secondi in modo da permettere la pulizia e sterilizzazione
interna del cappuccinatore
;
•
chiudere il vapore e riportare il corpo rotante in
pos. A
;
• nel caso di ostruzione del foro di prelievo dell’aria (2), liberatelo delicatamente con uno spillo.
ATTENZIONE
Si consiglia di effettuare la pulizia del cappuccinatore dopo ogni uso
continuativo in modo da evitare anomalie di funzionamento e garantire
un elevato grado di igienità del sistema.
2
1
pos. A
pos. B
negative pressure valve
- Turn the machine off;
-
by means of the steam valves, release all pressure in the boiler;
- turn the machine back on and check closure of the valve.
pressure limiting valve
- Lock the pressure switch contacts.
- wait for pressure in the boiler to rise and check for intervention
of the valve at a maximum pressure of 2 bar.
Non-return drain valve
- Activate the delivery groups for about 30 seconds;
- attach a filter holder
(5) with a gauge (available on request) to the delivery group;
- activate the delivery group, and use the gauge
(6) to monitor pressure increase up to 8-9 bar;
- check the increase of pressure due to the expansion of the heated water up to a value of approximately 12 bar: reaching this value
confirms proper operation of the valve and the seal of the gaskets and solenoid valves;
- de-activate the deliveries;
- repeat the control on the other delivery groups.
• Periodically check water pressure during coffee delivery. Check the pressure indicated on the gauge, which must be between 8 and 9 bar
inclusive.
• Monitor the boiler pressure value as explained in chapter 1, “Technical characteristics”.
• Periodically check the condition of the filters. Check for any damage on the edge of the filters and check whether any coffee grounds
settle in the coffee cup.
• At least once a year, check for proper operation of the gauge and pressure switch;
• At least once a year check for lime scale deposits on the heating element, on the exchanger (inside and out) and on the hydraulic circuit.
When replacing any components, always replace the relative gasket as well.
• At least once a year, check the condition of the solenoid valve of the delivery group.
• At least once a year check for trace water leaks on the counter. Also check the condition of the discharge tub and its connection to the
sewer system.
Grinder-doser
Periodically check the dose of ground coffee (inclusive between 6 and 7 gr. per stroke) and check the degree of grinding. The grinders
must always have sharp cutting edges. Their deterioration is indicated by the presence of too much powder in the grounds. It is advisable to
replace the grinders after every 400/500 kg of coffee.
Softener
The build-up of lime scale deposits in the hydraulic circuit of the machine indicates that regeneration has been neglected. Carry out maintenance of the boiler and of the hydraulic circuit, replacing any components as required.
Use care in areas where the water is very hard. It will be necessary to regenerate at more frequent intervals; likewise if there is high consumption of hot water for tea and so forth.
20. CHECKS AND MAINTENANCE
To ensure perfect safety and efficiency of the machine over time, it is necessary to carry out routine, preventive and special maintenance. In
particular, it is advisable to carry out an overall check of the machine at least once a year.
Machine
• Carry out cleaning as described in the previous chapter on a daily basis.
• Every four months replace the perforated disk
(2) and the undercup seal (4) of the delivery group
(use only original spare parts) proceeding as follows:
- loosen the screw
(1);
- remove the containment ring
(3);
- replace the group perforated disk
(2) and the rubber undercup seal (4);
- put the components back in place.
• At least once a year, check for proper operation of the negative pressure valve, pressure limiting valve
and non-return drain valve. In the event of malfunction they must be replaced. For the checks, proceed
as follows:
5
6
2
1
3
4
21. MALFUNCTIONS AND CORRESPONDING SOLUTIONS
Indication Cause Solution
NO POWER
TO MACHINE
1)
The machine commutator is in position “0” or “1”
2) The machine switch is defective
3) The mains power supply switch is in the OFF position
4) The connection to the electrical mains is defective
1) Replace the solenoid valve of the automatic level device
2) Replace the heat exchanger
3) Check the level probe, the earth of the
frame and the operation of the electronic control unit
NO WATER
IN BOILER
1) The water mains tap is closed
2) The cut-off tap of the automatic level device is in the
closed position
3) The pump filter is closed
4) The motor pump is disconnected or blocked
5) The water filling solenoid is defective
6)
The water inlet solenoid valve filter is clogged
1) Open the water mains tap
2) Open the automatic level device tap
3) Replace the pump filter
4) Check the motor pump
5) Replace the water filling solenoid valve
6) Clean or replace the filter of the solenoid valve
EXCESSIVE WATER
IN BOILER
1) The solenoid of the automatic level device is defective
2) The heat exchanger is perforated
3) The manual valve remains inser ted
1) Turn the machine commutator to position “2”
2) Replace the main switch
3) Place the mains switch in the ON position
4) Check for any defective connections
STEAM DOES NOT COME
OUT OF NOZZLES
1) The electrical heating element is defective
2) The pressure switch contacts are oxidized
3) The heating element protection thermostat has cut in
4) The nozzle sprayer is clogged
5) Machine switch in position “1”
1) Replace the electrical heating element
2) Clean the contacts or replace the pressure switch
3) Reset the heating element protection
4) Clean the steam nozzle sprayer
5) Turn the machine switch to position “2”
STEAM MIXED WITH WATER
COMES OUT OF
THE NOZZLES
1)The boiler level is too high 1) Check the status of the level probe:
verify correct position and check for
presence of any surface lime scale
NO DELIVERY
1) No water mains
2) Group solenoid valve is defective
3) The pump is blocked
4) The control unit fuse is burned out
5) The injector is clogged
6)
The group solenoid valve is clogged or dirty
7) The group filter is clogged
8) The volumetric dosing device is blocked
1) Check that there is water in the mains
2) Replace the group solenoid valve
3) Replace the pump
4)
Replace the solenoid valve protection fuse (1A)
5) Clean or replace the injector
6) Clean or replace the solenoid valve
7) Clean or replace the filter
8) Check/replace the dosing device
WATER LEAKS
FROM THE MACHINE
1) The tub does not drain
2) The drain tube is detached or broken or has
obstruction to water flow
3) Hydraulic leaks in the hydraulic circuit
1) Check the sewer drain
2) Check and restore the connection of the
drain tube to the tub
3) Identify and eliminate hydraulic leaks
COFFEE IS
TOO COLD
1) The electrical heating element is defective
2) The electrical connection is defective
3) Lime scale on the exchangers and/or heating element
4) The pressure switch contacts are oxidized
5) The heating element protection thermostat has cut in
6) Machine switch in position “1”
7) The lime scale has reduced the
circulation of water
8) The delivery group is cold
1) Replace the electrical heating element
2) Check for any defective connections
3) Clean the machine
4) Clean the contacts or replace the pressure switch
5) Reset the heating element protection
6) Turn the machine switch to position “2”
7) Clean the connections of the exchanger, and clean or
replace the two circulation tubes
8) Eliminate air pockets in the
hydraulic circuit in the following manner:
- disconnect the electrical power supply to the pump
- close the water tap of the softener
-
perform a dry run of delivery for a few minutes
- reconnect the electrical power supply to the pump
- open the water outlet tap of the softener
- perform delivery until water comes out
- wait a few minutes for heating
COFFEE IS
TOO HOT
Indication Cause Solution
1) Boiler temperature is too high
2) The flow reducer of the group is not suitable
1) Reduce pressure in the boiler by turning the appropriate screw
on the pressure switch
2) Replace the injector with one of a smaller diameter
DELIVERY
OF COFFEE
IS TOO FAST
1) The coffee is ground too coarsely
2) The diameter of the injector is too large
3) Boiler temperature is too high
1) Adjust the grinding of the coffee
2) Replace the injector with one of a smaller diameter
3) Reduce pressure in boiler
1) Coffee is ground too finely
2) The injector is clogged
3) The delivery group is clogged
4) The filter holder is dirty
1) Adjust the grinding of the coffee
2) Replace the injector
3) Check and clean the delivery group
4) Clean and if necessary replace the filters
COFFEE GROUNDS ARE
WET
1) The group solenoid valve discharge is clogged
2) The delivery group is too cold
3) Coffee is ground too finely
1) Clean the group drain
2) Wait for group to heat up completely
3) Adjust the grinding of the coffee
GROUNDS
IN CUP
1) The gauge is defective
2) Incorrect pressure switch calibration.
3) Incorrect motor pump calibration.
1) Replace the gauge
2) Adjust the calibration of the pressure switch
3) Adjust the calibration of the motor pump
THE GAUGE SHOWS AN
UNACCEPTABLE
PRESSURE
1) The filter holder is dirty
2) The filter holes are worn
3) The coffee is not ground evenly
4) The undercup seal is worn
5)
The temperature of the delivery water is high
1) Clean the filter holder
2) Replace the filter
3) Replace the grinders
4) Change the seal
5) Check the causes and eliminate the problem
for EVD:
COFFEE DELIVERY
ONLY BY MEANS OF
MANUAL KEY
1) The control unit fuse is burned out
2) The coil of the solenoid valve does not work
correctly or has shor ted out
1) Check for proper connection of the
volumetric dosing device connector
2) Check for proper connection of the
8-pole connector of the electronic control unit
3)
Remove the connector of the volumetric dosing device
and thoroughly dry the contacts
4) Replace the heads of the volumetric dosing device
or replace the dosing device
5) Adjust the grinding suitably
and if necessary check the grinders
6) Check and if necessary replace the
non-return valve
7) Check and if necessary replace the
drain valves
8) Clean and if necessary replace
the solenoid valve
9) Clean or replace the volumetric dosing device
for EVD:
INCORRECT
COFFEE DELIVERY
THE COFFEE DOSE IS NOT
MET
THE LED OF THE
DOSE PUSH BUTTON
FLASHES
1) The connection of the volumetric dosing device
is defective
2) The connection of the electronic control unit
is defective
3) The connector of the volumetric dosing device
has humidity on it
4) The volumetric dosing device is defective: during
delivery the dosing device LED does not flash
5) The coffee is ground too finely: there is not
sufficient water flow in the dosing device
6) The non-return valve loses pressures
(the dose is too small)
7) The drain valves lose pressure
(the dose is too small)
8) Water leakage from the group solenoid valve during
coffee delivery or when at rest
9) The volumetric dosing device is partially obstructed
for EVD:
ALL THE LED OF ALL THE
PUSH BUTTON PANELS
FLASH
for EPU-EVDT:
THE FRONT LED
FLASHES
After a few minutes, automatic filling with water is stopped:
1) Time control device has cut in
2) No water in mains
3) The tap for the automatic level device is closed
4) Some of the tubes in the circuit are clogged
5) The probe and/or the earth are disconnected
1) Turn the machine off and then back on
2) Open the water mains tap
3) Open the automatic level device tap
4) Check and replace the defective tubes
5) Check and restore connections
1) Replace the control unit fuse (1A)
2) Replace the coil of the solenoid valve
DELIVERY
OF COFFEE
TOO SLOW
THE PUMP WORKS ONLY
WITH THE MANUAL DELIVERY KEY
Indication Cause Solution
1) The pump fuse of the electronic control unit
is burned out
1) Replace pump fuse of the electronic control
unit (10 A)
SHUTDOWN OF
ELECTRONIC
SYSTEM
1) The control unit fuse is burned out
2) The volumetric dosing device has a contact
of the positive pole to the earth
1) Replace the main fuse (125 mA)
2) Check for proper connection of the volumetric
dosing device
THE PUMP
LEAKS WATER
1) Poor mechanical seal of the shaft or
of the O-ring
2) The inlet and outlet connections are loose
3) The hex nut of the pressure relief valve
or of the filter are loose
4)
The gasket or the O-ring of the pressure relief valve
or of the filter are defective.
1) Check the status of the pump
and take any corrective action which may be required
2) Tighten the connections
3) Tighten the hex connection of the modulating
valve and of the filter
4)
Replace the gasket and the O-ring. Take care
not to change the calibration of the valve
THE PUMP FUNCTIONS
BELOW THE NOMINAL
CAPACITY
1) The inlet is clogged, perhaps only partially
2) The pump rotates in the wrong direction.
3) The pressure relief valve is not properly calibrated
4) The motor runs at low RPM
5) The inside of the pump is damaged
due to the infiltration of foreign bodies
1) Clean the filter holder
2) Check the motor
3) Calibrate the pressure relief valve
4) Check the voltage or replace the motor
5) Replace the pump
1) The pump and the engine are not aligned.
2) The gasket or the O-ring of the pressure relief valve
or of the filter are defective.
3) The joint, the coupling screw or the
V-shaped clamp are loose.
4) The inlet is clogged, perhaps only partially
5) The hex nut of the pressure relief valve
or of the filter is loose
1) Install the pump-motor joint
2)
Replace the gasket and the O-ring. Take care
not to change the calibration of the valve
3) Align and tighten the components which are
loose
4) Clean the filter holder
5) Tighten the hex connection of the pressure relief
valve and of the filter
THE MOTOR STOPS
SUDDENLY OR
THE THERMAL PROTECTION
CUTS IN DUE TO
AN OVERLOAD
1) Lime scale and mineral build-ups in the
pump have caused it to jam
2) The pump and the engine are not aligned.
3) The motor is defective
4) The motor is connected with a voltage that
is not correct
1) Check the status of the pump
and if necessary replace it
2) Install the pump-motor joint
3) Replace the motor
4) Ascertain that the power supply voltage
of the motor is the right one
THE PUMP
IS NOISY
1) Steam pockets in the delivery system
2) Air pockets in the hydraulic circuit
3) Coffee is ground too finely
4) The flow reducer of the group is not suitable
1) Reduce water temperature
2) Check the cause and eliminate the problem
3) Adjust the grinding suitably
4) Replace the flow reducer
THE CUP IS
DIRTIED BY
SPLASHES OF COFFEE
22. LIST OF HAZARDS
This chapter describes possible hazards for the user if the specific safety standards described in this booklet are not adhered to.
The appliance must be connected to an efficient grounding system
If this is not done, the appliance can be a source of dangerous electrical discharges in that it is no longer able to discharge electricty to
earth.
Do not use running water to wash
The use of pressurized water directly on the machine can seriously damage electrical appliances. Never use water jets to wash any part of
the appliance.
Be careful with the steam nozzles and hot water
During use, the steam nozzles and hot water may overheat, thus becoming a source of danger. Handle such parts carefully. Never direct
steam or hot water jets directly on parts of the body.
Do not intervene on the machine when it is supplied with electrical power.
Before carrying out any intervention on the machine you must turn it off by means of the main network switch or better yet, disconnecting the
connection terminals in the network. Never remove any body panel when the machine is supplied with electrical power.
Never work on the hydraulic system before having emptied it.
All work regarding the hydraulic system and the relative boiler are to be avoided when there is still water and pressure in the system. You
must therefore empty it beforehand, closing the mains cock and dry-running the delivery group for a shor t time. Switch off the machine and
open all the steam and water cocks and taps. With the pressure zero, completely empty the boiler, unscrewing the special pipe fitting situated
on the lower part of it.
If the above procedure is not correctly carried out, opening any part of the hydraulic system can cause a sudden outlet of overheated water
under pressure.
Lever machines
Never lower the lever if there is no coffee in the filter, or if the filter holder is not installed on the group: the sudden upwards movement of the
lever may damage the appliance and injure individuals.
Gas machines
Periodically check for gas leaks in the system by applying a soapy solution to the ducts.
For safety reasons, close the gas heating system when the machine is not in use (at night or during hours of closure)
Use of the appliance
This espresso coffee machine is an appliance exclusively for professional use. Any other type of use is considered wrong and therefore dangerous. Never allow children or incapable persons to use the machine.
Non-observance of the above-described standards can cause serious damage to people or animals
.
Never work on the electronic apparatus when the machine is still supplied with electrical energy.
Shut down the machine completely by unplugging it from the mains before carrying out any operation.
WARNING
Any action taken by a technician on the electronics of the machine when the machine is still supplied with electrical power
automatically invalidates any guarantee.
The technician needs to be aware that the machine is electrically connected and act accordingly.
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