BZ07 - Coffee machine Bezzera - Free user manual and instructions

USER MANUAL BZ07 Bezzera

Warning! Important safety warnings!

© 2007 G. BEZZERA - All rights reserved

This publication or any part of it cannot be reproduced, stored in any kind of processor, transmitted, transcribed or translated in any common or software language, in any form or with any means be they electronic, mechanical, magnetic, optical, chemical, manual or other, without the previous written authorisation of G. BEZZERA.

G. BEZZERA warranty - Validity terms

The provided products are covered by warranty due to defects of material and/or manufacturing for a period of 12 months from the invoicing date. If the machine is outside the warranty period, it will not be possible to avail of it. Warranty will be granted only after submission of the original purchase document (sale receipt or invoice) attesting the purchase date.

In case of malfunction attributable to manufacturing defects, request the warranty intervention directly to the authorized G. BEZZERA dealer where the machine has been purchased, indicating the malfunction and the serial number indicated in the user manual or on the machine frame.

Goods returns which may reach the authorized dealer without the above serial number will void the warranty, since machine traceability data would not be available.

In case of return, equipment delivery is care of the customer. Handle with care and reposition the machine inside the original packing, to avoid further damage during transport. We remind that, in order to grant the warranty, the goods shall be mandatorily returned in the original packing.

The cost and the risks of machine transport to the dealer shall be borne by the customer.

Each machine is provided with an anti-tampering seal, which makes impossible to open the machine without breaking or damaging the seal. The warranty shall never be granted in case of machine with removed or damaged seal.

Warranty will be granted only after verification by the G. BEZZERA specialized, authorized technician, who will evaluate whether it is possible to repair the machine on site or it is necessary to ship it to the manufacturing plant. Any tampering with the machine by non authorized personnel shall void the warranty.

If the machine is received with defective or manifestly damaged packing, the customer shall promptly notice the distributor. Do not collect the goods and especially do not try to operate the machine.

The warranty explicitly does not include the defects which:

• are attributable to the use of non genuine accessories and spare parts

• are caused by thunderbolts, humidity, fire, improper power supply voltage, as well as any other damage not objectively attributable to the manufacturer.

• are ascribable to tampering with the power supply cable

• are not ascribable to manufacturing faults, but rather to the normal wear of the materials due to the proper use of the equipment (notably, calcification and wear of the parts subject to wear, e.g. seals, grinding disks)

• occur due to wrong use, negligence or carelessness in use or care (e.g. in case of non observance of the user instructions of the equipment)

• are caused by wrong installation, maintenance, or repair by non authorized persons or by damaging during transport.

For further information, or in case of issues not taken into account in the following instructions, refer to the authorized service centres.

Conditions de validité de la garantie G. BEZZERA

5 - USO DELLA MACCHINA

5 - USO DELLA MACCHINA

3.1 Description of working cycle 25
3.2 Description of controls 25
3.3 Technical data 25

4 - MACHINE INSTALLATION

4.1Warnings 26
4.2 Preparation of the plant for installation 26

4.2.1 Connection to the electrical power circuit 26
4.2.2 Connection to the water supply system (R VERSION) 26
4.2.3 Connection to discharge network (R VERSION) 26

4.3 Equipotential connection 26

5 - MACHINE USE

5.1 First machine start and water loading in the boiler 26
5.2 Heating. 27
5.3 Preparing coffee 27
5.4 Steam distribution 27
5.5 Drawing hot water 27
5.6Turning off the machine 27
5.7 Programming doses (DE VERSION) 28
5.8 BZ07 version with PID digital temperature control 28

5.8.1 Activation of machine heating 28
5.8.2 Setting the boiler temperature 28
5.8.3 Temperature/pressure conversion table 29

5.9 Dual scale pressure gauge 29

6 - MAINTENANCE

6.1 Safety rules 29
6.2 Cleaning the machine 29
6.3 Safety thermostat - Manual rearming 29
6.4 Correct product disposal 30

7 - TROUBLE SHOOTING

Problem / Diagnostics/Solution / Advice 31

1 - WARNINGS

1.1 General warnings

• The electrical and plumbing systems must be prepared by the user according to the indications provided in chapter 4 of this "Machine Installation" booklet.

• The installer cannot modify the pre-existing plant created by the user in any case.

• This instruction booklet is a full part of the machine and must be read carefully by the user before starting up the machine itself

• Keep the booklet for future reference.

• The machine is delivered without water in the boiler in order to avoid any possible damage caused by frost.

• Prepare the earthing of the electrical plant.

• Do not touch the machine with damp and/or wet hands and feet.

• Do not use the machine in bare feet.

• Do not connect the electrical power cable to loose extensions or similar.

• Do not disconnect the machine from the electrical power by pulling the electrical power cable.

• Do not turn on the machine while the electrical power cable is coiled.

• Do not allow untrained staff and/or children to use the machine.

• To prevent water from leaking in the machine, place cups on the cup heater with the hollow part facing upwards.

• The following symbol indicates the danger of burns.

1.2 Foreseen use

The BZ07 espresso coffee machine was designed to make espresso coffee, produce hot water and prepare tea, camomile tea and other infusions, produce steam and heat drinks (milk, hot chocolate, cappuccino, punch etc.).

This machine was designed only and exclusively for the uses as above.

All other uses must be considered improper and

therefore forbidden by the manufacturer. The manufacturer cannot be held responsible for damage caused by the improper use of the espresso coffee machine.

The machine is not intended for use by children or invalid people unless they are suitably supervised by people who can ensure correct use.

2 - TRANSPORT

2.1 Packing

The BZ07 espresso coffee machine is wrapped in polyurethane foam and then packed in cardboard boxes.

Warnings:

• After removing the machine from the packing, check that it is whole and make sure that it has all fittings.
• Packing materials must not be left within children's reach and must be disposed of at the correct dumps.
• If the machine is found to be damaged or some parts are missing, do not use the machine and inform the local dealer immediately.

2.2 Moving the machine

The espresso coffee machine can be moved using a forklift truck, transport pallets or manually.

2.3 Storage

The correctly packed machine must be stored in a dry environment, within a temperature range of +5^ to +30^ and with relative humidity of maximum 70% .

A maximum of four boxes can be piled on top of one another.

3 - MACHINE DESCRIPTION

3.1 Description of working cycle

S/R Versions

The water coming from the water supply (R VERSION) or from the tank on the back of the machine (S VERSION), via a vibration pump, passes through a excess pressure valve regulated to 12 bar (1.2 MPa) and allows the boiler and the exchanger to be loaded. The boiler water, heated by a resistance, heats the water in the exchanger in turn, from where it is sent to the unit via an electrically-controlled valve, using a weight, that allows the water to pass through to produce coffee.

3.2 Description of controls (Fig. 01 - Fig. 10)

1 Main switch
2 Green light
3 Yellow light
4 a Coffee distribution button (PM)
4 b Coffee distribution buttons DE)
4 c Coffee button LEDs (DE)
5 Distribution unit
6 Filter holder
7 Water tap
8 Hot water distributor
9 Steam tap
10 Steam nozzle
11 Gauge
12 Electrical power cable
13 Water loading pipe (R Version)
14 Water drain pipe (R Version)
15 1 cup filter
16 2 cup filter
17 Blind filter

3.3 Technical data (Fig. 02)

Power supply V~/Hz 220 - 240V~ / 50-60Hz 110 - 120V~ / 50-60Hz
Nominal power W 1400
Resistance W 1200
Boiler lt 1,5
Tank (S)	lt	3
Width «A»	mm	250
Depth «B»	mm 425
Height «C»	mm	375
Net weight	kg	19
Gross weight (box)	kg	22
Loading union (R Version)		G 3/8"
Drain union diameter (R VERSION)	mm	10

4 - MACHINE INSTALLATION

4.1Warnings

Installation must be carried out by qualified staff, following the instructions provided by the manufacturer and in observance of the current laws in force.

4.2 Preparation of the plant for installation

Prepare the base for the machine on a flat, dry, smooth, strong, stable surface, placed high enough so that the cup heating shelf is more than 150~cm from the ground. Do not use jets of water or install the machine in places where water jets are used. To ensure normal running, the machine must be installed in places with a temperature range of +5^ - +32^ and with maximum humidity of 70% . The machine is powered electrically and needs the following to function:

• connection to the electrical power circuit
• connection to the water supply (R version)
• connection to the discharge system (R version)

4.2.1 Connection to the electrical power circuit

Warnings:

• The plant must be built in compliance with the current laws in force and be earthed.

The machine must be supplied with an electrical power cable with a fitted plug.

4.2.2 Connection to the water supply system (R VERSION)

Make sure that the water supply is connected to a drinking water network with working pressure of 0 - 6 bar (0 - 0.6 MPa).

In the event that the water supply system has a pressure of more than 6 bar (0.6 MPa), fit pressure reducer. Fit a water interception tap

above the machine attachment. The water loading pipe is supplied with a thread diameter of 3/8''G .

4.2.3 Connection to discharge network (R VERSION)

Connect a rubber pipe, (Fig. 01; pos. 14) with an internal diameter of 10mm , to the union on the machine's discharge bowl and to a previously prepared open syphon discharge.

4.3 Equipotential connection

(Fig. 09)

This connection, foreseen by some laws, acts to avoid differences in electrical potential between the equipment masses installed in the same room. This equipment is fitted with a clamp under the base to connect to an external wire with a nominal section in compliance with the current laws in force.

5 - MACHINE USE

5.1 First machine start and water loading in the boiler

Open the water interception tap (R version).

Pour water into the tank (S version), checking that the aspiration pipe touches the bottom (Fig. 03). Insert the plug in the electrical socket.

Turn the main switch (Fig. 01; pos. 1) to position 1. Water is automatically loaded into the boiler.

PM VERSION

A safety device will interrupt the motor-pump after 120 seconds if the maximum water level is not reached in the boiler.

To restore working mode, turn off and turn on the machine again.

DE VERSION

A safety device will interrupt the motor-pump after 120 seconds if the minimum water level is not reached in the boiler.

The machine will signal this alarm by turning off the yellow light and turning on the keypad LEDs.

To restore working mode, turn off and turn on the machine again.

5.2 Heating

In order for the machine to reach the right temperature, with the pressure indicated on the boiler gauge (Fig. 01; pos. 11) between 1 and 1.2 bar (0.1 - 0.12MPa) open the steam tap (Fig. 01; pos. 9) and discharge the steam 2 or 3 times into the discharge basin.

The yellow light (Fig. 01; pos. 3), if turned on indicates that the machine is working correctly, if turned off means insufficient water in the tank (S version), in the boiler (R version).

5.3 Preparing coffee

1) Remove the filter holder (Fig. 01; pos. 6) from the distribution unit (Fig. 01; pos. 5).
2) Load the filter holder with ground coffee, press the coffee down taking care to not dirty the edge of the filter holder.
3) Reattach the filter holder in its housing.

PM VERSION

4) Start up coffee distribution by pressing the distribution button (Fig. 04; pos. a).
5) Stop distribution when the desired quantity is reached, by pressing the distribution button again.

DE VERSION

4) Use the coffee distribution keypad (Fig. 05), by pressing one of the keys, depending on the desired dose.

To change dose programming, follow the instructions in paragraph 5.7 of this booklet.

The machine is set for continuous distribution: press the key (Fig. 05; pos. c) to start up distribution, press again to stop..

Warnings:

• Do not remove the filter holder full of coffee when the machine is working, as it is pressurised.
• Do not touch the metal part of the filter holder directly as it is hot.

5.4 Steam distribution (Fig. 06)

1) To avoid liquids being sucked into the boiler, discharge the steam by turning the tap knob (Fig. 01; pos. 9).
2) Insert the steam nozzle (Fig. 01; pos. 10) in the container of the liquid to be heated.
3) Press down and hold the steam tap knob (Fig. 01; pos. 9), lifting the lever the tap will remain in open position (Fig. 06). The amount of steam distributed is proportional to the opening of the tap; the more the tap is opened, the more steam will be distributed.
4) Once steam has been distributed, release knob, remove liquid container and clean the steam nozzle immediately with a damp cloth to remove heated liquid residues.

Warning: Do not touch the steam nozzle directly as it is hot.

5.5 Drawing hot water

1) Place the water container under the nozzle (Fig. 01; pos. 8).
2) Press down and hold the water tap knob (Fig. 01; pos. 7) to draw the amount of water required.
3) Once water has been distributed, release the knob.

Warning: Do not touch the water distributor tap directly as it is hot.

5.6 Turning off the machine

1) Turn the main switch (Fig. 01; pos. 1) to position "0" and check that the green light has turned off. (Fig. 01; pos. 2)

2) Close the water interception tap (R version).

5.7 Programming doses (DE VERSION) (Fig.05)

a = single dose

b = double dose

c = continuous/programming distribution

To programme each single dose, proceed as follows: keep the programming key pressed down for about 5 seconds (Fig. 05; pos. c) until the LED light flashes.

Select the desired dose by pressing the corresponding key (a-b) (LED turns on); press the key again one the desired dose has been reached (LED turns off): the dose has in this way been programmed.

Notes:

• The LED lights on the keypad flash intermittently: low water level in tank.
• The LED lights on the keypad flash rapidly: low water level in boiler.
• The LED light of the selected button flashes: coffee ground too finely.

N.B.

If no water comes out from the distribution unit (Fig. 01; pos. 5) even if the boiler is pressurised and the tank is at a working level, some air bubbles may have formed in the circuit that stop the pump from working normally or the aspiration pipe may not have been correctly inserted in the tank.

To restore working order if air bubbles have formed, proceed as follows:

1) Turn the main switch off (Fig. 01; pos. 1) and discharge steam from the tap (Fig.01; pos.9). Wait for the machine to cool down completely.

PM VERSION

2a) Turn the main switch on again (Fig. 01; pos. 1) and press the distribution button (Fig. 04; pos. a) until the water comes out of the unit; press the button again (Fig. 04; pos. a) and wait for the machine to become pressurised.

DE VERSION

2b) Turn the main switch on again (Fig. 01; pos. 1) and press the continuous dose button "A" (Fig. 05; pos. c) until the water comes out of the unit; press the button again "A" (Fig. 05; pos. c) and wait for the machine to become pressurised.

5.8 BZ07 version with PID digital temperature control (Fig. 11)

The Espresso Machine BZ07 with temperature control is provided with a temperature digital controller, settable from 80^ to 100^ . This enables to change the boiler pressure from a minimum of 0.5 bar to a maximum of 1.7 bar.

Never exceed the temperature of 100^ in the boiler, since the safety valve may trip due to the pressure increase.

5.8.1 Activation of machine heating

Press the main switch (Fig. 01; pos.1) to switch on the machine; the temperature control display (Fig. 11; pos. A) shows OFF, that means that the heating element in the boiler is inactive.

To enable boiler heating press the button (Fig.12; pos.B). The boiler temperature is displayed.

A blue dot in the bottom right corner of the display signals the activation of the resistance (Fig. 12; pos. C).

5.8.2 Setting the boiler temperature

Pressing the button (Fig. 12; pos. A) the displays shows PrG, pressing the button (Fig. 12; pos. B) the factory default boiler temperature (90^) , corresponding to the pressure of 1 bar, is shown. Now it is possible to change the temperature setting using the buttons (Fig. 12; pos A/B).

3 seconds after pressing the last button, the temperature control stores any change and returns to display the boiler temperature.

5.8.3 Temperature/pressure conversion table

°C 80	85 90	95 100
bar 0.	5 0,7 1,	0 1,3 1,	7

5.9 Dual scale pressure gauge (Fig. 13)

(where expected)

The machine is equipped with dual scale pressure gauge by which you can check the following pressures:

Boiler manometer (Fig. 13 - A)

range 0 3 bar (0 0,3MPa)

The boiler manometer indicates the boiler pressure.

Pressure gauge (Fig. 13-B)

range 0 15 bar (0 1,5MPa)

The pressure gauge indicates the pump maximum pressure during operation. When the motor pump is stopped the manometer indicates the water supply pressure (R version) or "0" (S version).

6 - MAINTENANCE

To allow the machine to work correctly, follow the maintenance instructions provided below.

6.1 Safety rules

Do not subject the machine to water jets. Disconnect the machine from the electrical power by turning the electrical power network omnipolar knife-switch lever to the resting position 0. Remove the plug and close the water interception tap before carrying out maintenance and/or cleaning work. If the machine is malfunctioning, do not attempt to repair it alone and call the technical assistance service immediately. If the electrical power cable has been damaged, turn off the machine immediately, turn off the water and call the technical assistance service. Do not replace it alone. Carry out cleaning/maintenance when the machine is cold, preferably wearing protective gloves.

6.2 Cleaning the machine

These recommendations are indicative.

Maintenance and cleaning frequency depends on machine use.

After each use

1) Clean the steam nozzle.
2) Clean the filter holder and filters Daily
1) Clean the cup holder grill and drain tank
2) Clean the machine body Weekly
1) Clean the unit seal with the brush provided (Fig. 07).
2) Clean the water tank (S VERSION).
3) Wash the unit as follows: attach the filter holder to the unit with the blind filter provided (Fig. 10; pos. 17) and start up distribution several times. Monthly
1) Submerge the filter holders and filters in boiling water for a few minutes to dissolve coffee grease, use a cloth or sponge to remove residue.

Do not use solvents, detergents or abrasive sponges for washing and cleaning. Clean the machine body with a cloth dampened in water and/or neutral detergents, carefully drying surfaces before reconnecting the machine to the power supply. Use water to clean the cup holder grill and drain tank. Use water and neutral detergents to clean the tank after removing it. When finished rinse thoroughly. Replace the tank and insert the silicon tubes making sure that the suction pipe touches the bottom.

6.3 Safety thermostat - Manual re- arming

Warning! The operation described below is only relevant to an installing technician who is authorised by the manufacturer.

While the machine is working, the boiler resistance may overheat and, cutting off power, sets off the safety thermostat that prevents any further damage to the boiler. To restore normal opera

tions, resolve the malfunction that triggered the safety thermostat and restore normal conditions by pressing the red button (RESET) (Fig. 08).

6.4 Correct product disposal

(electrical and electronic waste)

(Applicable in the European Union countries and those countries with separate waste collection systems).

The sign carried on the product or on its documentation indicates that the product must not be disposed of with other domestic waste at the end of its

life cycle. To avoid any damage to the environment or to health, caused by unsuitable waste disposal, the user is asked to separate this product from other types of waste and to recycle it responsibly to help the sustainable recycling of material resources.

Domestic users are invited to contact the dealer where the product was purchased or the local office in charge of this matter for all the information relating to separate waste collection and recycling for this type of product.

Company users are invited to contact their own supplier to check the terms and conditions of the purchase contract.

This product must not be disposed of together with other commercial waste.

7 - TROUBLE SHOOTING

Problem Diagnostics/Solution Advice
No distribution of steam from specific tube	The steam tube nozzle is blocked; unblock it using a pin. This problem is linked to the fact that the tip of the nozzle enters the milk.	Clean the steam nozzle after each use.
Leaks from filter holder Possible causes: 1 - The seal under the cup is worn or encrusted. 2 - The filter holder is placed incorrectly on the unit.	Clean with the brush provided. If the problem should arise again, call a specialised technician.
Difficulty in placing the filter holder on the attachment ring	The problem may be caused by the excessive dose of coffee in the filter holder.	Reduce the amount of coffee in the filter holder. (Standard doses for filters are 6 grams per dose).
Abnormal position of filter holder once placed on the unit.	Once locked onto the unit, the filter holder handle is further to the right than usual. The seal under the cup is worn.	Call a specialised technician to replace the seal under the cup.
Coffee flow is less than usual	Coffee comes out in drops, distribution time is too long and the quality of the coffee is not good, it has a dark cream. Possible causes: 1 - The coffee has been ground too finely. 2 - The coffee in the filter holder is pressed down too hard. 3 - Too much coffee has been placed in the filter holder. 4 - The unit shower is blocked. 5 - The filter in the filter holder is blocked.	In cases 1-2-3, the problem can be solved by adjusting the grinding and/or dosage of the coffee. In case 4, a technician must be called. In case 5, clean the filter or replace it.
Coffee flow is excessive	The coffee is distributed too quickly and the cream is lighter than usual. Possible causes: 1 - The coffee has been ground too coarsely. 2 - The coffee in the filter holder is not pressed down enough. 3 - There is too little coffee in the filter holder.	Alter the coffee grinding and/or dosage.
Problem Diagnostics/Solution Advice
The coffee distributed is too cold	Possible causes: 1 - The filter holders are cold. 2 - The coffee has been ground too finely. 3 - The machine's water circuit is dirty (limescale). 4 - The boiler pressure is below 0.8 bar (0.08 MPa).	In case 1, keep the filter holder assembled on the unit. In case 2, alter the coffee grinding. In cases 3 - 4, call a specialised technician.
The coffee distributed is tepid.	The coffee distributed is tepid, even if the pressure is found to be normal, between 1 and 1.2 bar (0.1 - 0.12 MPa). In this case, pressure monitoring is fictitious.	Call a specialised technician to check the airhole valve. In the meantime, however, in order to use the machine, open the steam tap (Fig. 1 - pos. 9), the boiler pressure will go down to zero, and this will cause the resistance to step in and increase the temperature. Carry out this operation daily when turning on the machine.
The coffee distributed is too hot	Possible causes: 1 - The boiler pressure is more than 1.3 bar (0.13 MPa). 2 - The machine is covered by something that prevents it from cooling down. 3 - The machine has been installed in a position that does not allow air to circulate.	In case 1, call a specialised technician. In cases 2-3, restore the machine's cooling conditions.
Coffee deposits on the bottom of the cup	Possible causes: 1 - Coffee is ground too finely. 2 - The filter holder is dirty on the inside or the filter is damaged. 3 - The coffee mill's grinders are worn.	Case 1 can be solved by correctly adjusting the coffee mill. In case 2, clean the filter holder or replace the filter. In case 3, a technician must be called.

SOMMAIRE

1 - AVERTISSEMENTS

a =une dose
b = dose double
c = distribution continue/pro-

grammation

= dosis individual