RobUSTEZZA BZB1MMIXIL Carob Coffee Machine Instruction Manual

**RobUSTEZZA BZB1MMIXIL Carob Coffee Machine Instruction Manual

**

Warning! Important safety warnings!

Warning! Important warnings for the correct use of the machine.

ELECTRICAL CONNECTIONS

• V380-415/3+N THREE-PHASE CONNECTION WITH NEUTRAL

• V220-240/3 THREE-PHASE  CONNECTION

• V220-240/2 SINGLE-PHASE CONNECTION

• V220-240/2 SINGLE-PHASE CONNECTION

(0) Blue (Neutral)| (0) Blue (Neutral)| (0) Blue (Neutral)| (0) Blue (Neutral)(0) White (neutral for USA)
---|---|---|---
(1) Brown(1)| (1) Brown +(3) Grey(1)| (1) Brown +(2)Black +(3) Grey(1)| (1) Brown(1) Black for USA(1)
(2) Black(2)| (2) Black(2)| |
(3) Grey(3)| | |
(3P+N+T)| (3P+T)| (1P+N+T)| (1P+N+T)
380-415 Vac;50-60 Hz| 220-240 Vac;50-60 Hz| 220-240 Vac;50-60 Hz| 220-240 Vac;50-60 Hz

WARNINGS

General warnings

• The electric and water systems must be set up by the user, according to the indications in chapter 4 of this “Machine installation” booklet.
• The installer cannot, under any circumstances, modify the existing system set up by the user.
• This instructions booklet represents an integral part of the machine and must be read carefully by the user before using the machine.
• Store the booklet for fu- ture consultation.
• The machine is delivered without water inside the boiler to avoid possible damage caused sub-zero temperatures.
• Make sure the electric system is earthed.
• Do not touch the machine with damp and/or wet hands and feet.
• Do not use the machine bare foot.
• Do not connect the power cable to makeshift extension cords and similar.
• Do not disconnect the machine from the mains power by pulling the power cable.
• Do not use the machine if the power cable is rolled up.
• This appliance is not intended for use by per- sons (including children) with reduced physical, sensory or mental capa- bilities, or lack of experi- ence and/or knowledge, unless they are under the supervision of a person who is responsible for their safety or they have been instructed in how to use the appliance.
• Keep the appliance and the cable out of the reach of children under eight years old.
• This appliance should not be used by children under eight years old.
• This appliance may be used by children over eight years old.
• Children must not play with the appliance.
• Cleaning and mainte- nance should not be done by children without su- pervision.
• To avoid water getting inside the machine, place the cups on the cup warm- er with the hollow side facing the top.
• The machine is not in- tended for outdoor use.
• The machine is intended for professional use only.

Intended use

The espresso coffee machine is built to make espresso coffee, to produce hot water to make tea, chamomile and other infusions, to produce steam and heat up beverages (milk, hot chocolate, cappuccino, punch, etc.).

This machine was conceived exclusively for the aforesaid uses.

All other uses are deemed improper and, therefore, prohibited by the manufacturer. The manufacturer will not be deemed liable for damage caused by the improper use of the espresso coffee maker.

MACHINE INSTALLATION

Warnings
Installation must be carried out by qualified personnel, according to the instructions supplied by the manufacturer and in compliance with current laws. The machine must be positioned and installed in a place where use and maintenance are performed exclusively by qualified personnel. The machine can be used in places set up for staff kitchen areas in shops, offices and other working environments; holiday farm houses; by clients in hotels, motels and other types of accommodation; bed and breakfast settings; etc.

Preparation of system for installation

Place the machine on a flat, horizontal, even, dry, smooth, sturdy, stable surface positioned at such a height that the cup warming surface is over 150 cm from the ground. Do not use water jets or install in places where water jets are used. To ensure normal operation, the appliance must be installed in locations where temperatures range between +5°C and +32°C and humidity does not exceed 70%. If the machine is exposed to temperatures below
+ 0 °C, proceed as follows:
Ensure that the machine has been in a place where the temperature is higher than +15°C for 24 hours before turning it on.

The machine is powered by electricity and it needs the following to operate:

• Connection to mains electricity.
• Connection to mains water.
• Connection to drainage circuit.

Connection to mains electricity

Warnings:

• The connection to mains electricity must be done by qualified personnel.
• The wiring must be done in compliance with current laws and earthed.

The machine is supplied with a power cord without a plug; for a permanent electrical connection between the appliance and the mains electricity, fit a safety omnipolar switch with a minimum opening between the contacts of overvoltage category III, suitably sized for the load and in compliance with the current regulations in force.

Connection to mains water
(Fig. 03)

Make sure that the water supply line is connected to a drinking water network with operating pressure between 0 and 6 bar (0 – 0.6MPa).If the water network has pressures above 6 bar (0,6 MPa), install a pressure reducer. Install a water shut-off valve upstream of the machine’s connection. The water inlet pipe (Fig. 03; pos. 1) has a G 3/8” thread.

Warning: Do not open the screw-on cap and boiler exhaust valve: risk of scalding. Use only the new inlet pipe supplied

Connection to drainage circuit
(Fig. 03)

Connect the rubber discharge pipe provided (Fig. 03; pos. 2) to the G 3/4” connector and to a preinstalled open or serviceable drainage siphon.

Instructions for water softener
(Fig. 04)

Connect the machine as indicated in Figure 4. For use and maintenance, refer to the instructions for the water softener.
A – Connect to the water inlet pipe
B – Connect to the mains drinking water

**Equipotential connection
(Fig. 05)

**This bonding, required by some regulations, avoids electric potential differences between earthed devices installed in the same room. This appliance has a terminal located under the base to connect an external conductor, with a ring terminal to insert between twonuts with a nominal section in compliance with current legislation.

MAINTENANCE

Follow the maintenance instructions indicated below to operate the machine correctly.

Safety rules
Do not clean the machine with jets of water. Do not immerse the machine in water when cleaning. If the machine malfunctions, do not attempt to repair it yourself and immediately contact technical support.

If the power cord is damaged, do not replace ityourself. Perform the safety measures below and contact the technical support. Machine safety measures:

for any maintenance work and/or faults and cleaning operations: place the omnipolar mains switch in the idle “0” position and/or disconnectthe mains plug. Close the mains water supply and, if present, close the mains gas supply. Do any cleaning/maintenance work when the machine is cold and wear protective gloves.

Conditions for best machine operation:

• The room temperature must be between +5°C and +32°C. If the machine has been exposed to sub-zero temperatures, follow the instructions given below: Ensure that the machine has been in a place where the temperature is higher than +15°C for 24 hours before turning it on.
• The mains water pressure must be between 0 and 6 bar (0 – 0.6 MPa). The pressure is also indicated on the pump pressure gauge (Fig. 11 – B) with a scale range of 0-15 bar (0 – 1.5 MPa).
• Red indicator light (Fig. 01A; pos. 8), when on, it indicates the machine is working.
• Green indicator light (Fig. 01-01A; pos. 15), when on, it indicates that the water level in the boiler is above minimum.
• Orange light (Fig. 01-01A; pos. 9), when on, it indicates the electrical resistance is working.

Cleaning the machine

****Warnings: For the best results and in compliance with current regulations, change the water in the boiler and pipes when starting the machine every day.

This advice is for indication purposes only: maintenance and cleaning schedules depend on the use of the machine

After each use

1. Clean the steam wand.

2. Clean the filter-holder and filters. Daily

3. Clean the cup rack and drip tray.

4. Clean the bodywork.

5. Clean the group’s gasket with the brush provided (Fig. 07).
   

6. Clean the group as follows: insert the filterholder in the group with the blind filter provided (Fig. 09; pos. 12) and purge several times.

7. Immerse the filter-holders and filters in boiling water for a few minutes to dissolve any coffee oils and use a cloth or sponge to remove it.

****For washing and cleaning, do not use solvents, detergents or abrasive sponges. Only use specific products for coffee machines. Wash the bodywork using a cloth soaked in water and/or neutral detergent, taking care to dry the surface well before reconnecting the machine to the mains electricity. Use water only to wash the cup stand and drip tray.

Safety thermostat – Manual resetting

Warning! The operation de- scribed below must be only performed by a qualified installation technician author- ised by the manufacturer.

During normal operation, the machine has an overheating prevention mechanism via the safety system. (RESET) (Fig. 08; pos. D). This system protects the user from accidental burns and temporarily blocks all the ma- chines functions.

Correct disposal of the product
(electric and electronic waste) (Applicable in the countries of the European Union and in those with waste sorting systems)

The label affixed on the product and on the documents indicates that the product must be disposed of with other domestic waste at the end of its life cycle. To avoid any damages to the environment or health causedby improper waste disposal, the user must separate this product from other types of waste and recycle it responsibly to promote the sustainable reuse of material resources.

Domestic users should contact the reseller from whom they purchased the product or the relevant  office in their area to obtain all information about waste sorting and recycling of this type of product. Corporate users should contact their supplier to check the terms and conditions of the purchase agreement.

This product must not be disposed of with other industrial waste.

TRANSPORT

The espresso coffee machine, previously protect- ed with polyurethane foam mouldings, is pack- aged in a cardboard box with pallet.

**** Warnings:

• After removing the machine from the packaging, check that it is intact and all the parts have been supplied.
• The packaging must never be left within reach of children and must be disposed of at designated waste facilities.
• If any damage to the machine is detected or if any parts are missing, do not use the machine and immediately notify the local dealer.

Handling the machine
The espresso coffee machine can be handled with a pallet truck or a fork lift.

Storage
The machine in its proper packaging must be stored in a dry place at a temperature between +5 and +30ºC and relative humidity not higher than 70%. Do not stack more than four boxes on top of each other.

DESCRIPTION OF MACHINE

Description of operating cycle

The water arriving from the mains through a motor pump, adjusted to a pressure between 9 and 10 bar (0.9 – 1 MPa), passes through a pressure relief valve, adjusted to 12 bar (1.2 MPa), allowing both the boiler and the heat exchanger to be filled. The water in the boiler, heated by a heating element, in turn heats the waterin the heat exchanger, which, thanks to a drip riser, is sent to the group in order to brew the coffee by means of an electronically- controlled valve.

**Description of commands
(Fig. 01-01A)

**

1. Steam knob
2. Water button
3. Coffee/steam/water dispensing button
4. Steam wand
   • Automatic steam wand
5. Hot water tap
6. Boiler drain plug
7. Filter holder
8. Red light
9. Orange light
10. Machine power switch
11. Pressure gauge
12. Blind filter
13. 1 cup filter
14. 2 cup filter
15. Green Light
16. Drip tray
17. Body

Description of command panels
(Fig. 06)

a Pre-selection key for regular coffee
b Pre-selection key for long coffee
c Pre-selection key for double dose of long coffee
d Pre-selection key for double dose of long coffee
e Tea key
f Key for continual dispensing/programming/ stop

Technical data
(Fig. 02)

The espresso coffee machine BZO is built only in the 2-group version. The espresso coffee machine BZB is built in versions with 1 to 3 groups. The 2-group version is described in this booklet; however, the instructions for use and the layout of the controls are the same for the other versions. The A-weighted sound pressure level of the coffee machine is less than 70dB.

| BZB| BZB| BZO| BZB
---|---|---|---|---
1 GROUP| 2 GROUPS| 2 UNITSCompact| 3 GROUPS
Power supply| V~/Hz| 110 – 120 / 50-60Hz
Heating element| V~| 110
Nominal power| W| 1600| 2850| 2050| 3300
Heating element| W| 1400| 2600| 1800| 3000
Power supply| V~/Hz| 220 – 415 / 50-60 Hz
Heating element| V~| 230
Nominal power| W| 2200| 3250| 2750| 5250
Heating element| W| 2000| 3000| 2600-3050| 5000
Boiler| l| 5| 11| 8| 17
Width “A”| mm| 570| 750| 500| 960
Depth “B”| mm| 550| 550| 495| 550
Height “C”| mm| 515| 515| 535| 515
Net weight| kg| 49| 54| 57| 75
Gross weight (pallets)| kg| 56| 65| 70| 87
Water input connector| | G 3/8”
Drain connector| | G 3/4”

USE OF MACHINE

Starting the machine and filling the boiler with water

Open the water shut-off valve. Bring the lever of the omnipolar power switch to the “ON” position. Bringing the switch (Fig. 01A; pos. 10) or by pressing the switch (Fig.01; pos.10), checking that the light comes on.

In position “1” (red light on Fig. 01A; pos. 8) or the switch pressed (white light on) the water load in the boiler activates; after 120 seconds of loading the machine goes into alarm mode; return the switch to the “0” position and repeat the operation by acting on the same switch a few times until the pump has fully loaded the boiler and it will no longer start.

Once the minimum level has been reached, the green light (Fig. 01-01A; pos. 15) will light up and the switch (Fig. 01A; pos. 10) can be brought in position 2 to activate the resistance and the orange light will come on (Fig. 01-01A; pos. 9). Wait until the boiler pressure gauge (Fig. 01-01A; pos. 11) shows a pressure between 1 and 1.2 bar (0.1 – 0.12 MPa) before using the machine.

Heating
To make sure that the machine has reached the right thermal balance between temperature and pressure, when the boiler pressure gauge shows a pressure between 1 and 1.2 bar (0.1 – 0.12 MPa), open the steam tap (Fig. 01-01A; pos.

1. and release the steam into the drip basin 2 or 3 times.

The green light (Fig. 01-01A; pos. 15), if off, indicates that the water level in the boiler is too low. The orange light (Fig. 01-01A; pos. 9), if on, indicates that the resistor is switched on.

Warning:
when the green light (Fig. 01-01A; pos. 15) is switched off, a safety device does not allow the machine to function; contact the technical assistance service.

Preparation of coffee

**** Warnings:

• Do not remove the filter-holder when the de- vice is on: risk of burns. – Do not directly touch the metal part of the filter-holder and group: risk of burns.
• The standard doses for the filters are 10 grams for one dose and 20 grams for two dose.

1. Remove the filter-holder from the group head.

2. Load the filter-holder with ground coffee, press the coffee taking care not to make the edge of the filter-holder dirty.

3. Re-insert the filter-holder in its seat. M model

4. Press one of the keys to dispense the coffee (Fig. 01-01A; pos. 3) based on which dose is required. Press the button again (Fig. 01-01A; pos. 3) to stop dispensing when the desired dose is reached.

5. Press one of the keys to dispense the coffee (Fig. 06; pos. a-b-c-d) based on the dose to dispense. To change the programming of doses, follow the instructions indicated in paragraph 5.7 of this booklet.start dispensing by pressing the continuous dispensing key (Fig. 06; pos. f).
   The machine is pre-configured for continuous
   output:

6. top dispensing once the desired amount quantity has been reached, by pressing the continuous dispensing key again (Fig. 06; pos. f).

7. top dispensing once the desired amount quantity has been reached, by pressing the continuous dispensing key again (Fig. 06; pos. f).

Warning: The machine has an automatic safety device that stops continuous output after the third consecutive litre.

Steam supply

1. To prevent the liquid from being sucked back into the boiler, discharge the steam by turning the knob (Fig. 01-01A; pos. 1).
2. Introduce the steam wand (Fig. 01-01A; pos. 4) into the container holding the liquid to heat.
3. Turn the steam knob (Fig. 01-01A pos. 1). The amount of steam dispensed depends on how far the tap is opened: the further the tap is opened, the greater the amount of steam dispensed.
4. Once the steam has been dosed, close the tap, remove the container holding the liquid and immediately clean any residue from the steam wand with a wet cloth.

Warning: Do not touch the steam wand directly because it is hot.

Extracting hot water

1. Place the container under the hot water wand (Fig. 01-01A; pos. 5). M model
2. Press the key (Fig. 01-01A; pos. 2) to dispense the required amount of water. E model
3. Press the key (Fig. 06; pos. e) to get the required amount of water.

Warning: Do not touch the spout directly because it is hot.

Turning off the machine

1. Close the water supply tap.
2. Turn the switch (Fig. 01-01A; pos. 10) in pos. “OFF” (red light off Fig. 01A; pos. 8).
3. Put the omnipolar power switch in idle position “0”.
4. Release the pressure from the steam tap.

Dose programming (E Model)

To adjust the doses of E machine, do the following: press the continuous delivery/programming/stop button (Fig 06; pos.f), keep it pressed until the corresponding LED starts to flash intermittently, signalling (the machine must not deliver water) the start of the programming function which hasa duration of 4 seconds (E Model), 30 seconds (DE Model with automatic steam wand) if a key to be programmed is not pressed.

Activate the delivery of any key on the keypad (Fig 06; pos. a-b-c-d) to start the programming that will be saved when the key is selected again to stop delivery.

Repeat these procedures for all keys to programme the desired doses. By programming the first group on the left, the settings will be automatically transmitted to the other groups. To carry out different programming between one group and another, programme them individually.

“PRE-BREWING” programming

The possibility to select the “PRE-BREWING” function has been included.
Machine off. Turn the machine on by pressing:

• The key “a” (Fig. 06) of the first group to ENABLE PRE-BREWING. The system confirms the operation, keeping light “pos. a” on.
• The button “b” (Fig. 06) of the first group to DISABLE PRE-BREWING. The system confirms the operation, keeping light “pos. b” on.

Turn the machine off and on again. Check the desired setting. The pre-brewing times are the pre-set ones.

Turning on the lights
You have the option of choosing to enable/disable the keypad lights.

Machine off. Turn the machine on by pressing: E model

• The a – d – f keys (Fig.06) of the second group, until the relative LEDs light up, to ACTIVATE the function.
• The b – d – f keys (Fig. 06) of the second group, until the relative LEDs turn on, to DEACTIVATE the function.

Turn the machine off and on again. Check the desired setting.

Dispensing coffee in the pot (Fig. 10)
Coffee can be dispensed directly into a pot or tall cup. To perform this procedure, remove the base grille, as shown in Fig. 10, then position the cup and dispense the coffee as previously described.

Group washing

DE model with automatic steam wand

When pressing and holding down the key (Fig, 06; pos. f), press the key (Fig. 06; pos. a), the group washing programme is activated (dispense water five times for about 10 seconds each); start doing this only after having inserted the filter holder with the blind filter provided. To stop the program, press any key. This program must be used to clean the hydraulic circuit of the group, as described in chapter 6.2 in daily cleaning.

Pressure gauge (Fig. 11)

The machine has a double scale pressure gauge that can control the following pressure: Boiler pressure gauge (Fig. 11 – A) scale 0~3 bar (0~0,3 MPa)

Indicates the normal working pressure of the boiler.

Pump pressure gauge (Fig. 11 – B) scale 0~15 bar (0~1.5 MPa)

The pressure gauge indicates the maximum pump pressure during operation. When the motor pump is idle, the pressure gauge indicates the water supply pressure.

**Gas burner instructions (where provided) (Fig. 13A-13B)

**

Warning: The installation and any adjustment or adaptation to the type of gas should be done by a qualified technician in rooms that comply with the dimensions specified under current laws.

• In the 1GR version it is necessary to remove the body to access the gas adjustment to be carried out with the machine disconnected from the mains (Fig. 13A).
• On the other 2GR and 3GR versions, the gas adjustment can be done by removing the drip tray with the machine connected to the mains (Fig. 13B).

The machine leaves the factory configured for use with liquid gas (LPG). The gas regulator is, therefore, fitted with the appropriate injector (6) shown in the table below in 100/mm:

Model

| LPG G30 – 29 mbar| Natural gas G20 – 20 mbar
---|---|---
1 g| 45| 80
2 g| 85| 125
3 g| 110| 175

The flame is regulated (minimum and maximum) to suit this type of gas. If the machine is to be used with a different type of gas, it will be necessary to replace the injector in accordance with the above table and adjust the primary air regulator (10), in the case of natural gas. To do this, loosen the locking screw (9) and then move the primary air regulator forwards or backwards. (10). After the adjustment, retighten the locking screw  (9).

The air intake must still to be adjusted upon machine commissioning.

Warning: Connection to the gas distribution network must be carried out in compliance with current regulations.

• open the gas cock.
• Press the knob of the valve cock (2), turn it 90° anticlockwise and keep it pressed, at the same time press one or more times on the piezoelectric ignition button (3) until the burner ignites and continue to hold it down the knob.
• Wait about 20 seconds, then release the knob of the valve and the burner will remain on (the flame is visible from the holes specially made on the front pane.

Warning: in case of ignition failure, do not insist, then release the knob of the valve and check that the ignition spark on the burner is controlled.

If the flame goes out when the valve knob is released, check the position of thermocouple and the circuit connected to it.

The flame should be bright blue; if not, adjust the primary air intake (10) slightly until it becomes bright blue.

Wait until the machine reaches the correct pressure and check this is the desired value. Otherwise, adjust the gas pressure switch which has two adjustment screws.

When the machine is pressurised, check to see that the minimum flame is correct by adjusting the screw (5) if necessary. After loosening the locking- nut, unscrew the screw until it feels loose and check whether, under these conditions, a low flame remains lit, thus acting as a pilot.

If the flame is too high, you must adjust the screw  (4), by turning it slightly clockwise. If, on the other hand, the flame tends to go out, then adjust the screw (4) by turning it anticlockwise, until a very low, but constant flame is obtained. Then turn the screw (5) clockwise until there is a high flame, and wait for the boiler to reach the desired operating pressure. If the flame dies down before reaching the required pressure, tighten the screw (5) further; if the flame dies down at a higher pressure, then unscrew it.

Check that it is working by opening the steam tap once or twice to release the pressure in the boiler, then hold the screw (5) still and lock it with the locking-nut.

TROUBLESHOOTING

with needle. This problem is caused by the way the spout is inserted into the milk.| Clean the steam spout after each use.
Leaks from filter holder| Possible causes:1 -The group head gasket is worn or encrusted.2 -The filter holder is incorrectlyinserted in the group.| Clean it using the brush sup- plied.Should the problem occur again, call a specialised techni-cian
Difficulty in inserting the filter holder on the group head| The problem can be caused by an excessive dose of coffee in the filter holder.| Decrease the quantity of coffee in the filter holder.
Incorrect position of the fil- ter holder once inserted in the group| Once inserted on the group, the handle of the filter holder has shifted to the right. The group head gasket is worn.| Call a specialised technician to replace the group head gasket.
The flow of coffee is scarce| The coffee is dispensed drop by drop, the output time is too long and the quality of it is not good, the cream is dark.Possible causes:1 -The coffee is ground too finely.2 -The coffee has been pressed too firmly in the filter holder.3 -The dose in the filter holder is excessive.4 -The group shower head is clogged.5 -The filter holder filter basket is clogged.6 -The pressure supplied by the pump is low (< 9 bar – 0.9MPa) or does not work.| In cases 1-2-3, the problem can be solved by adjusting the grinding and/or dosing.In cases 4-6, contact a techni- cian.In case 5, clean or replace the filter.
Problem| Troubleshooting/Solution| Advice
The flow of coffee is excessive| The coffee is dispensed too quickly and the cream is lighter than usual.Possible causes:1 -The coffee is ground too coarsely.2 -The coffee in the filter holder has not been pressed firmly enough.3 -The dose in the filter holder is too small.4 -The pressure released by the pump is too high (> 10 bar- 1 MPa).| In cases 1-2-3, adjust the grind- ing and/or dosing of coffee.In case 4, contact a technician.
The coffee dispensed is too cold| Possible causes:1 -The cups are cold.2 -The filter holders are cold.3 -The coffee is ground too finely.4 -The machine water circuit is dirty (limescale).5 -The boiler pressure is lower than 0.8 bar (0.08 MPa).6 -The group is cold.| In case 1, use the cup warmers. In case 2, keep the filter holder mounted on the group.In case 3, adjust the grinding of the coffee.In cases 4-5-6, call a special- ised technician.
The coffee dispensed is tepid| The coffee dispensed is tepid even if the pressure is normal, between 1 and 1.2 bar (0.1 -0.12 MPa). In this case, the pressure detected is false.| Call a specialised technician to check the bleed valve. Mean- while, to use the machine, open the steam tap (Fig. 01; pos. 1), the boiler pressure will drop to zero, which will cause the heat- ing element to engage and the temperature to rise. Perform this operation daily when turning on the machine.
The coffee dispensed is too hot| Possible causes:1 -The boiler pressure is higher than 1.3 bar (0.13 MPa).2 -The machine is covered by something that prevents it from cooling.3 -The machine was installed in a position that does not al- low air circulation.| In case 1, call a specialised technician.In the cases 2-3, reset the ma- chine cooling conditions.
Problem| Troubleshooting/Solution| Advice
The coffee dosing switch flashes once selected| The set dose of coffee is not observed and the output is con- tinuous.| Contact a specialised techni- cian.
All lights of the keypad are flashing, the coffee maker is completely blocked| 1 -Check if the mains water is working and if the tap con- nected to the mains is open.2 -The fault is due to the lack ofwater inside the boiler| For point 1, do the checks. For point 2, call a technician.
No coffee is dispensed| No coffee is dispensed and the key for the selected dose is flashing.| Select the coffee dosing key, without the filter-holder, and check that the water flow is con- tinuous.If the flow is continuous, the problem is:a)    the coffee is ground too finely;b)   the filter-holder is clogged. In this case, immerse it in hot water with specific detergent tablets.For any other problem, contacta specialised technician.
Coffee deposits on the bottom of the cup| Possible causes:1 -The coffee is ground too finely.2 -The filter holder is dirty inside or the filter is damaged.3 -The grinding discs are worn. 4 -High pump pressure(> 10 bar – 1 MPa).| Case 1 can be solved by adjust- ing the grinder correctly.For case 2, clean the filter hold- er or replace the filter.In cases 3-4, contact a techni- cian.

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