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Schaerer Siena Service Manual
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Schaerer Siena Service Manual

Schaerer Siena Service Manual

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  • Page 2 M. Schaerer Ltd. Telefon: +41 31 858 51 11 Service manual Gewerbestrasse 15 Fax: +41 31 858 51 40 SMSI – 02 3302 Moosseedorf E-Mail: info@scherer.com Switzerland Internet: www.schaerer.com Order number: 062'760...
  • Page 3 All information, illustrations, and specifications in this manual are based on the latest product information available at the time of publication approval. M. Schaerer AG reserves the right to change the content at any time without any prior notice. SMSI - 02 - V03...
  • Page 4 3.2.6 Compliance with safety regulations ........................3-8 3.2.7 Systematic final check ............................3-8 Maintenance Instructions..................4-1 Service intervals for the SIENA coffee machine ....................4-1 Check number data 2.1 – 2.20 .........................4-2 Safety Relevant Parts A ...........................4-3 Requirements for smooth operation.......................4-3 Non-compliance..............................4-3 Functional descriptions..................5-1 Overview contents............................5-1...
  • Page 5 Service manual Copyright 5.2.4 Drinking water connection ..........................5-4 5.2.5 Water specifications (Option) ..........................5-4 5.2.6 Water filter / Decalcifier ............................5-4 5.2.7 Waste water connection .............................5-4 5.2.8 Connection to the power system ........................5-5 5.2.9 Calcium (limescale) ............................5-5 Components ..............................5-6 5.3.1 General................................5-6 5.3.2 Programming ..............................5-6 5.3.3 ESD protection (electro static discharge) ......................5-6...
  • Page 6 Disassembling the coffee grinder blades......................7-16 7.10.2 Disassembling the coffee grinder powder outlet ....................7-18 7.10.3 Disassembling the coffee grinder motor ......................7-19 7.10.4 Adjusting grinder current consumption - Siena ....................7-21 7.10.5 Cleaning the grinder blades when jammed ......................7-21 7.10.6 Grinder - settings ..............................7-21 7.10.7 Tips and facts about coffee ..........................7-21...
  • Page 7 Service manual Copyright 8.5.5 Grinder and brewing unit motors ........................8-9 8.5.6 Vibrating armature pump ............................8-9 8.5.7 Transformer ..............................8-10 8.5.8 Temperature sensor ............................8-10 8.5.8.1 NTC table .................................8-11 8.5.9 Valves................................8-12 Programming (Operating the service program with a Laptop) ......9-1 Installing the service program on the PC laptop...................9-2 9.1.1 Windows system requirements...........................9-2 9.1.2...
  • Page 8 Copyright Service manual 10.1.10 Installation plan with mains water connection....................10-9 10.1.11 Coffee machine - laptop service cable......................10-10 Special informatio ....................11-1 11.1 Grinding quantity test ............................11-2 11.2 De-scaling a machine with mains water connection ...................11-3 11.3 Emptying .................................11-5 11.4 Information relating specifically to the OPAL ....................11-7 11.4.1 OPAL control panel ............................11-8 11.4.1.1...
  • Page 9 M. Schaerer AG. The Never open pressure containers. user manual is an integral part of the above agreement of Take suitable precautions (depressurise, serve prod- use.
  • Page 10 Safety Regulations Service manual For this reason, you should disconnect pipes and con- Electronic regulations tainers only after the system has been carefully de- pressurised and/or vented. Wear suitable protective 2.2.1 General gear when carrying out such work (goggles/gloves). DANGER TO LIFE Spare parts When carrying out any work on electrical appliances, fatal injuries may be caused by...
  • Page 11 Service manual Safety Regulations 2.4.3 Supply / Disposal Using lubricants 2.3.1 Machine lubrication can contain materials that are Drinking water connection hazardous to life and can cause symptoms of toxic poi- soning or paralysis or cause other damage to health. It is essential to follow the installation diagrams (see chap- They should be used in coffee machines only where ter on “Technical Data”) and local regulations when con-...
  • Page 12 Safety Regulations Service manual Non-return valves have only one direction 2.5.7 Level probe of flow. If they are installed counter to the direction of flow, the water system could There are level probes of different lengths. A level malfunction. When installing a valve make probe of the incorrect length can cause the steam gen- sure that it is installed in the correct direc- erator to malfunction.
  • Page 13 Service manual General notes for service technicians Regulations covering product safety and its users (set- CHAPTER tings, torques, use of lubricants, replacing safety com- ponents, compliance with nominal values, etc. Regulations covering the personal protection of the GENERAL NOTES FOR service technician and the machine material, (in par- SERVICE TECHNICIANS ticular protection from: electric shock, scalds, hazards...
  • Page 14 General notes for service technicians Service manual 3.1.5 Tools and test equipment Knirps (brand) slot screwdriver These tools and test instruments are the minimum (Minimum: sizes 3) items required to carry out maintenance work. Slot screwdriver Test instruments should also be available as a mini- (Minimum: sizes 2, 3) mum stock of tools in order to carry out the highest Special Torx screwdriver...
  • Page 15 Service manual General notes for service technicians Fig. 3-001 SMSI - 02 - V03 Page 3-3...
  • Page 16 General notes for service technicians Service manual Notes relating to the dismantling and maintenance instructions 3.2.1 Pictograms The following list shows all the pictograms together with their significance. Please study the particular features of each of the pictograms. They show very helpful details such as the number of similar elements, the number of turns when loosening screw fittings etc.
  • Page 17 Service manual General notes for service technicians 3.2.3 Fitting / removing the Legris fast connection system Fitting Fig. 3-004 The Legris quick fit connection system works with a 2-stage click Using the Legris pliers (067’064) press the moulded tube firmly into the Legris quick fit system until you hear it click into place twice.
  • Page 18 Service technicians can use this information not only to short time. create the basis of optimum and cost-effective mainte- nance to the machine, but by providing feedback to M. Schaerer AG they help to improve the reliability and ser- viceability of the machines. 3.2.5.2 Systematic machine check...
  • Page 19 Service manual General notes for service technicians Statement Check Description Measure(s) to take • Milk/milk Cappuccino nozzle foam/ (alter- native/ addi- tionally) Check meter readings and enter into service documentation. Decide which components need Programming/accessories to be replaced immediately. Check settings relating to the likely fault NOTE: A minimum of the visual check must be carried out on machines where the faults are such that they can no longer be operated.
  • Page 20 General notes for service technicians Service manual 3.2.6 Compliance with safety regulations These introductory notes are extremely important for your understanding and correct application of the dismantling instruc- tions that follow: Please read them very carefully because then you will be able to apply the safety regulations correctly and sensibly at the appropriate time.
  • Page 21 H. Stettler Order No: 020585 Service intervals for the SIENA coffee machine The minor service works must be performed every 6‘000, 18'000, 30'000 cups, and the major service works must be per- formed every 12‘000, 24'000, 36'000 cups or 12 months (A) = Safety-relevant parts (see item 2.3)
  • Page 22 Maintenance Instructions Service manual Check number data 2.1 – 2.20 Check the instant heater on the inside and outside for calcium residue. Replace the seals under the screw fit- tings and tighten with 2.2 Nm. Optical check of seal, calcium deposition, and opening pressure. Optical check of seal, soiling, calcium, and condition of the seals.
  • Page 23 Non-compliance 5.1 Schaerer shall not be liable for any damages or losses, either for its contractual partner or for any third party, resulting out of the non-compliance to these maintenance regulations. 5.2 The maintenance regulations are valid in the form in which they are in force at each point of time. The contrac- tual partner of Schaerer shall follow them immediately after receipt of a new version and impose them on all employees, representatives, partners, purchasers, etc.
  • Page 24 Maintenance Instructions Service manual Page 4-4 BASI - 02 - V03...
  • Page 25 Service manual Functional descriptions CHAPTER FUNCTIONAL DESCRIPTIONS Overview contents Connections (Supply / Disposal) ............ 5.2 ...5-4 General ................5.2.1 ..5-4 Serial number..............5.2.2 ..5-4 Rating plate................. 5.2.3 ..5-4 Drinking water connection........... 5.2.4 ..5-4 Water specifications (Option) ..........5.2.5 ..5-4 Water filter / Decalcifier ............5.2.6 ..5-4 Waste water connection............
  • Page 26 Functional descriptions Service manual 1 Vibrating armature pump............5.3.9 ..5-15 2 Flow meter ................. 5.3.10 ..5-15 3 Non-return valve................. 5.3.12 ..5-17 4 Safety valve................5.3.13 ..5-17 5 Solenoid valves ................5.3.14 ..5-18 5a Feed valve (steam) 5b Rinsing valve 5c Steam valve (only for machines with cappuccino) 5d Hot water valve (only for machines with cappuccino)
  • Page 27 Service manual Functional descriptions 1 Safety thermostat ............... 5.3.18 ..5-21 2 Level probe ................5.3.19 ..5-22 3 Temperature sensor ..............5.3.20 ..5-23 4 Instant heater ................5.3.22 ..5-25 5 Steam generator................. 5.3.23 ..5-26 Screw connections / pipes / hoses ..........5.3.24 ..5-27 Transform..................
  • Page 28 Functional descriptions Service manual Connections (Supply / Disposal) All the systems are supplied via this connection. The pres- sure of the mains water supply should be between 1.0 bar 5.2.1 General (minimum) and 2.0 bar (maximum). Nominal value 2.0 bar. This pressure is described as local pressure.
  • Page 29 Service manual Functional descriptions 5.2.8 Connection data Connection to the power system DANGER TO LIFE Voltage + 10% Connected Supply Cable Remarks When carrying out any work on electrical ap- Frequency load fuse pliances, fatal injuries may be caused by elec- tric shock, if live parts are touched.
  • Page 30 Functional descriptions Service manual Components 5.3.4 5.3.1 Lubricant General Some components must be lubricated when a maintenance This section contains a description of all the components service takes place. There are various lubricants available used in several of the systems, or which are used in a simi- for this purpose.
  • Page 31 Service manual Functional descriptions 5.3.5 Overview Fig. 5-004 11a Indicator grinding fineness Water tank Mains switch O-I (not needed with coin unit) Cup stand Integral turntable Steam and hot water nozzle Control Panel Rotary knob hot water/steam (only machine without cappuccino) Service door 2-part Cup grill Brewing unit with tray for powder residue...
  • Page 32 Functional descriptions Service manual 5.3.6 Control Panel Espresso serving key Operating key ON/OFF Espresso indicator Ready-to-use indicator Café crème serving key Standby indicator Café crème indicator Cleaning/rinsing/descaling key Cappuccino serving key Cleaning/rinsing indicator Cappuccino indicator Machine without cappuccino: Pot of coffee serving key Serving key freely programmable (Machine without cap- puccino) Machine with cappuccino:...
  • Page 33 Service manual Functional descriptions 5.3.6.2 Messages displayed in operation DISPLAY MESSAGE SIGNIFICANCE DISPLAY MESSAGE SIGNIFICANCE Flashing Lights up red Flashing: The machine is in standby Water tank << Standby >> The water tank is empty or not mode; it is now consuming very correctly insert-ed.
  • Page 34 Functional descriptions Service manual 5.3.7 Grinder (Disassembling the coffee grinder, paragraph 7.10 page Fig. 5-008 In the grinder the coffee beans are ground through a three level grinding unit to become fresh ground coffee. As the coffee beans are crushed, much of the mechanical energy is converted into heat (friction).
  • Page 35 Setting Worn grinder blade; the grinder blades suffer most wear Grinder current grinder value OPAL value Siena when grinding very fine. If the edges are blunt, the resis- consumption label tance to the grinder increases, and the grinder could be- come blocked.
  • Page 36 Functional descriptions Service manual brewing, pressing out and ejecting the coffee grounds. The 5.3.8 brewing cylinder/ brewing piston system is built onto a slid- Brewing unit ing carriage, which moves between two fixed pistons. The sliding carriage is moved by means of a spindle. Together (Disassembling the brewing unit, paragraph page 7-12)
  • Page 37 Service manual Functional descriptions Fit the motor / gears to the pull out section free of play Replacement in line with service instructions paragraph Piston motor: Check the clearance of the drive shaft on page 4-1. the motor/gear housing connection Replace the brewing unit with friction plunger O rings (do not lubricate!) The three most important piston/cylinder positions are described below...
  • Page 38 Once wearing or faulty parts have been dismantled, cleaned and repaired, the surfaces marked below (bearing and guiding surfaces) must be lightly (!) greased with the specified grease for use in food applications (take note of the M.Schaerer part nos.!). Please also note which parts should NOT be greased and also the safety instructions and user information for food grease.
  • Page 39 Service manual Functional descriptions 5.3.9 Vibrating armature pump Fig. 5-016 (Disassembling the vibrating armature pump, paragraph 7.19 page 7-31) The pump generates the pressure for all the systems in the machine. It increases the pressure of the mains water sup- ply (local mains or fresh water container) to that required for brewing coffee (8 bar).
  • Page 40 Functional descriptions Service manual Technical data: Dirt produced by particles: Turbine wheel blocked Electric plug connections (flow meter control system) Max. flow approx.: 0.92 l/min. The control board is faulty with nozzle Ø 1.2 mm The flow meter is faulty Pressure: 0 bar, intake function only Operating voltage:...
  • Page 41 Service manual Functional descriptions 5.3.12 Non-return valve MACHINE FAULT (Disassembling the valves (feed valve / rinsing valve / non- Non-return valves have only one direction of return valve), paragraph Disassembling the valves (feed flow. If they are installed counter to the di- valve / rinsing valve / non-return valve)page 7-30...
  • Page 42 Functional descriptions Service manual DANGER TO LIFE / MATERIAL DAMAGE Maintenance Safety valves can only comply with their Most frequent faults safety functions if they are installed in the correct direction of flow. Incorrectly in- Calcium deposits or soiling: continual flow of water as a stalled valves can cause the pressure to rise result of calcium or dirt particles on the flat packing or on too high and the instant heater or steam...
  • Page 43 Service manual Functional descriptions 5.3.15 Ceramic valve Service intervals (Disassembling the ceramic valve, paragraph 7.11 page Inspection in line with service instructions paragraph page 4-1. Check for limescale and wear on the seal in the closing element and inspect the valve seats. The ceramic valve (only on machines without the cappuc- cino option) does not only start and stop the flow of the Replacement in line with service instructions paragraph...
  • Page 44 Functional descriptions Service manual 5.3.17 Cappuccinatore (Ecco foamer head) (Disassembling the ECCO cappuccino outlet (only for ma- Fig. 5-026a chines with the ECCO cappuccino option), paragraph 7.33 page 7-46) (only for machines with cappuccino with Ecco foamer head) for frothing the milk to a foam. Function If a product with milk is selected, the steam valve opens and draws in the milk from the milk container.
  • Page 45 Service manual Functional descriptions 5.3.18 Safety thermostat The following conditions are crucial for reliable operation: (Disassembling the instant heater (IH) / steam generator (SG), paragraph 7.13 page 7-25) DANGER TO LIFE / MATERIAL DAMAGE The safety thermostats can only fulfil their The safety thermostat is one of three safety levels used to function if they are correctly fitted and the prevent an instant heater or steam generator from overheat-...
  • Page 46 Functional descriptions Service manual 5.3.19 Mounting instruction Level probe When the union nut is tightened on the Legris nipple, the (Disassembling the level probe, paragraph 7.14 page 7-27) clamping ring is compressed with a torque of 12 Nm. The level probe controls the water level in the steam gen- N.B.
  • Page 47 Service manual Functional descriptions 5.3.20 Temperature sensor (Disassembling the instant heater (IH) / steam generator Technical data (SG), paragraph 7.13 page 7-25) The temperature sensor is an active measurement system Temperature [°C] Resistance[kΩ] to control the temperature of the instant heater and the 12.565 steam generator.
  • Page 48 Functional descriptions Service manual 5.3.21 Ventilator (only for machines with cappuc- cino) (Disassembling the ventilator (only for machines with cap- Check puccino), paragraph 7.29 page 7-42) The fan switches on when a product is made. It switches off The ventilator sucks in cooler air. The steam that penetrates after a pre-set time.
  • Page 49 Service manual Functional descriptions 5.3.22 FUNCTIONAL SAFETY Instant heater Instant heaters are pressure containers and are checked as a complete unit after the (Disassembling the instant heater (IH) / steam generator manufacturing process. (SG), paragraph 7.13 page 7-25) De-scale the machine with the agent rec- ommended by the manufacturer, using the The hot water is prepared in the instant heater.
  • Page 50 Functional descriptions Service manual 5.3.23 Maximum Operating temperature: 192 °C Steam generator Minimum Operating temperature: 10 °C Operating temperature: 116 °C - 130 °C (Disassembling the instant heater (IH) / steam generator Heating time: 10°-->130° approx.:< 2 Min. (SG), paragraph 7.13 page 7-25) The steam generator produces the steam used to heat and...
  • Page 51 Service manual Functional descriptions 5.3.24 The nominal values, of pipe materials, must not be Screw connections / pipes / hoses changed to other values (this could have a negative ef- fect on the thermal stability of systems, time-dependent All water dosing, preparation and control components are processes, functional safety of the devices).
  • Page 52 Functional descriptions Service manual 5.3.26 MATERIAL DAMAGE Keyboard PCB Static discharge caused while working on the PCBs can destroy them. When handling (Disassembling the keyboard panel, paragraph 7.28 page PCBs make sure that they cannot suffer electro-static discharge and always store susceptible components in anti-static pack- The keyboard PCB is the "man –...
  • Page 53 Service manual Functional descriptions 5.3.27 PC-board Fig. 5-040 EEprom (Disassembling the control board, paragraph 7.26 page The control system is the coffee machine’s “brain” and it controls all the machine functions. It contains the programs, monitors all the sensors and controls the consumers. The most important elements of the control system are the mi- crocontroller with integrated memory, which contains the program (Flash ROM) (1) and a special memory chip...
  • Page 54 Functional descriptions Service manual In unfavourable conditions voltages of over 30 kV can be Anti-ESD packaging and containers created. However much lower voltages can destroy compo- ESD work surfaces (ESD mat, moisturised air etc.) nents. The symbol shown alongside is placed on all It is essential therefore that there should be an effective components that need to be protected against protection against ESD at all locations that are to do with...
  • Page 55 X14.3.....brown.... 0V........Flowmeter / mains water X15.1.....white ..... +12VDC ......Water tank sensor X15.2.....white ..... Signal ........Water tank sensor X16........RS 232 ........ Service plug X17.................. Operator PCB Junior/Siena X18....yellow/green . GND ........Earth terminal X19.1........0V........X19.2........+12VDC ......
  • Page 56 Functional descriptions Service manual 5.3.28 Brewing system 5.3.28.1 Brewing system coffee without Cappuccino Product serving: Coffee Requirements: Machine is heated up Note: Machine without cappuccino option Some processes are shown in a simplified form in the following description. Overview diagram Fig.
  • Page 57 Service manual Functional descriptions Vibrating armature pump switches on (3): Pump (3) produces the pressure for the water system Close rinsing valve (4b): Power transistor Rinsing valve (4b) closes, the quantity of hot connects through water specified in the program flows from the instant heater (6) into the brewing cylinder (9).
  • Page 58 Functional descriptions Service manual 5.3.28.2 Brewing system coffee with Cappuccino Product serving: Coffee Requirements: Machine is heated up Note: Machine with cappuccino option Some processes are shown in a simplified form in the following description. Coffee = coffee without milk (see paragraph 5.3.28.1 Brewing system coffee without Cappuccino page 32).
  • Page 59 Service manual Functional descriptions Vibrating armature pump switches on (3): Pump (3) produces the pressure for the water system Close rinsing valve (4b): Power transistor Rinsing valve (4b) closes, the quantity of hot connects through water specified in the program flows from the instant heater (6) into the brewing cylinder (9).
  • Page 60 Functional descriptions Service manual ) Whilst the instant heater is heating up, the rinsing valve is opened. 12 1) Top up If the water level in the instant heater/steam generator is too low, the level probe is no longer covered. The signal on the level probe is not longer conducted to earth (pulsed direct voltage - cannot be meas- ured with a multimeter).
  • Page 61 Service manual Functional descriptions 5.3.28.3 Hot water without Cappuccino Product serving: Hot water Requirements: Machine is heated up Note: Machine without cappuccino option Some processes are shown in a simplified form in the following description. Overview diagram Steam / Closed/ Hot water Fig.
  • Page 62 Functional descriptions Service manual 5.3.28.4 Brewing system steam without Cappuccino Product serving: Steam Requirements: Machine is heated up Note: Machine without cappuccino option Some processes are shown in a simplified form in the following description. Overview diagram Steam / Closed / Hot water Fig.
  • Page 63 Service manual Functional descriptions 5.3.28.5 Hot water with Cappuccino Product serving: Hot water Requirements: Machine is heated up Note: Machine with cappuccino option Some processes are shown in a simplified form in the following description. Overview diagram Fig. 5-046 Brewing system Water tank 10.
  • Page 64 Functional descriptions Service manual 5.3.28.6 Steam with Cappuccino Product serving: Steam for cappuccino Requirements: Machine is heated up Note: Machine with cappuccino option Some processes are shown in a simplified form in the following description. Overview diagram Fig. 5-047 Brewing system Spring-loaded non-return valve 16 Level switch with Reed contact Water tank...
  • Page 65 Service manual Fault diagnosis 6.1.4 CHAPTER Fault lists The fault lists are structured as follows: system / component FAULT DIAGNOSIS possible cause remedy General notes 6.1.1 How this section is structured In the remedy column, you will generally find a reference to the relevant section of the chapters on “Maintenance”, “Con- This section is designed and categorised in the form of a trol system diagram”, and “Spare parts list”.
  • Page 66 Fault diagnosis Service manual The second grade is formed by all the elements of which 6.1.6 Tips for fault diagnosis the functions are monitored. Their function depends on the ability of the program to function reliably. Fault Carry out a structured fault diagnosis. This will help you to statuses are detected and indicated on the display locate and repair the fault quickly and clearly.
  • Page 67 Service manual Fault diagnosis Overview Display – malfunction messages (A-Z), paragraph 6.3, page Fault lists, paragraph 6.1.4, page Programm, paragraph 6.5, page Water- Steam- System, paragraph 6.6, page Grinder/ , paragraph 6.7, page SMSI - 02 - V03 Page 6-3...
  • Page 68 Fault diagnosis Service manual Display – malfunction messages (A-Z) System / component Possible cause Remedy 2x locked • • The 2x button is blocked The 2x button is set with the ser- Appears when the 2x button is pressed vice program individually for each button Configuration system, paragraph...
  • Page 69 Service manual Fault diagnosis System / component Possible cause Remedy Motor control • • Concerns the grinder and the piston Replace the control board motor control system. Internal Disassembling the control board, paragraph 7.26, page 7-39 measurement by the control system indicates that there is a current, but •...
  • Page 70 Fault diagnosis Service manual System / component Possible cause Remedy control board • Replace the Reed switch Disassembling the Reed switch (water level in the water tank), paragraph sTxt-47 7.22, page 7-36 Page 6-6 BASI - 02 - V03...
  • Page 71 Service manual Fault diagnosis Program malfunction System / component Possible cause Remedy Display does not light up • • Mains connection Check the mains connection - mains cable - mains switch - transformer • Cable • Inspect the cable connecting the control board to the keyboard PCB •...
  • Page 72 Fault diagnosis Service manual Grinder/ Coffee System / component Possible cause Remedy Coffee flows too slowly or too fast • • Grinder setting incorrect See Chapter Grinder settings, para- graph 5.3.7.1, page 5-10 und Tips and interesting facts about coffee, para- graph 5.3.7.2, page 5-11 The cream on the coffee is too light...
  • Page 73 Disassembling the coffee grinder powder ........ 7.10.2 ..7-18 Disassembling the coffee grinder motor ........7.10.3 ..7-19 Adjusting grinder current consumption - Siena ......7.10.4 ..7-21 Cleaning the grinder blades when jammed....... 7.10.5 ..7-21 Grinder - settingsTips and facts about coffee ......7.10.6 ..7-21 Disassembling the brewing unit motor ........
  • Page 74 Assembly - Disassembly Service manual Disassembling the safety valves ............ 7.15 ..7.15 Disassembling the connection piece (supply pipe - brewing unit) .. 7.16 ..7-29 Disassembling the tank valve ............7.17 ..7-30 Disassembling the valves (feed valve / rinsing valve / non-return valve)........................
  • Page 75 Service manual Assembly - Disassembly Disassembling the ventilator (only for machines with cappuccino). 7.29 ..7-42 Disassembling the IDEA cappuccino outlet (only for machines with the IDEA cappuc- cino option)..................7.32 ..7-45 Disassembling the ECCO cappuccino outlet (only for machines with the ECCO cap- puccino option) ................
  • Page 76 Assembly - Disassembly Service manual Preparing for maintenance work 7.2.1 Safety Regulations The relevant safety regulations must be observed for the work carried out. In principle the safety instructions that ensure maximum protection from physical injury and material damage must be applied. This applies in par- ticular where tests and measurements need to be made on a machine operating without its protective casing.
  • Page 77 Service manual Assembly - Disassembly Dismantling - A For safety information see chapter 2 Safety Regulations from page 2-1. The brewing unit is in the start position. Disconnect the machine from the mains electricity supply. Depressurising Fig. 7-001 Fig. 7-002 Fig.
  • Page 78 Assembly - Disassembly Service manual 3.12 3.11 Detach the ground cable from the plug-in contact stud 3.11 3.13 3.12 Put the cup plate to one side. 3.13 Lift the brewing unit off the guide 3.15 3.14 Remove the tray 3.14 Fig.
  • Page 79 Service manual Assembly - Disassembly Fig. 7-014 When you assemble it, ensure that the 2 centring pins (e) on the handle fit into the holes of the notched ring (f)… … and both holders (b + d) are securely engaged. Disassembling the hood 5.1 Take the coffee beans out of the bean container.
  • Page 80 Assembly - Disassembly Service manual Installation Fig. 7-019 Ensure that the mains switch fits correctly and is working properly follow- ing installation Fig. 7-120 Wide section Narrow section Fig. 7-021 Fig. 7-022 5.6 Lift up the steam pipe 5.7 First pull the hood up and then forwards over the steam pipe.
  • Page 81 Service manual Assembly - Disassembly Fig. 7-026 b Ensure that the cables are positioned carefully when you carry out the installation. (figures 7-025 and 7-026) Fig. 7-027 Lever limit switch When you fit the hood, check the position of the lever limit switch. Fig.
  • Page 82 Assembly - Disassembly Service manual Fit the two holders (a) on the microswitch side hatch (b) in the hood. Fig. 7-133 Dismantling - B Disconnect the machine from the mains electricity supply. Carry out the instructions in Dismantling - A, paragraph page Fig.
  • Page 83 Service manual Assembly - Disassembly Fig. 7-038 Twist it and pull it upwards and out. Installation Ensure that all the lugs on the pump cover are properly engaged. Dismantling - C Carry out the instructions in Dismantling - A, paragraph page Carry out the instructions in Dismantling - B,...
  • Page 84 Assembly - Disassembly Service manual Disassembling the brewing unit (Functional description: Brewing unit, paragraph 5.3.8 page 5-12) Fig. 7-044 Turn the knob on the side hatch anti- clockwise to the stop and drop the hatch down. Press down the lever marked “PRESS” and pull the sliding section out (fig.
  • Page 85 Service manual Assembly - Disassembly 7.6.1 Disassembling the complete tube section Fig. 7-048 Fig. 7-049 Loosen the screws and remove the connec- tion angle. Dismantle the pivot bracket by pressing the retainer carefully outwards. Disassembling the brewing unit motor Attention! Do not under any circumstances expose the grinder motor to impact, drop it onto a hard sur- face or clamp it in a vice.
  • Page 86 Assembly - Disassembly Service manual Fig. 7-053 Pull the motor slightly downwards and then forwards until the cable cover de- taches itself (fig. 7-053). Fig. 7-052 Pull the cable cover (a) off backwards. Disconnect the cables (b yellow / c green) from the motor (unplug them).
  • Page 87 Service manual Assembly - Disassembly Fig. 7-058 You must fit the aluminium groove (d) of the pull-out section over the plas- tic edge as if it were a guide rail. Disassembling the brewing unit pull-out section - “PRESS” opener and guide Turn the handle on the side hatch anti-clockwise to the stop and drop the hatch down.
  • Page 88 Assembly - Disassembly Service manual Fig. 7-065 Fig. 7-064 7.10 Disassembling the coffee grinder (Functional description: Grinder, paragraph 5.3.7 page 5-10) 7.10.1 Disassembling the coffee grinder blades Carry out the instructions inDismantling - A, paragraph page Fig. 7-066 Using a screwdriver, carefully move the two retainers (a) on the worm gear away and pull it out.
  • Page 89 Service manual Assembly - Disassembly Fig. 7-069 Unscrew the two screws (f) on each grinding blade with a size 2 Phil- lips screwdriver Installation Attach the new grinder blades with the screws. Fig. 7-070 Fig. 7-071 Replace the adjusting ring (g) with the grinder blade, turning it manu- ally in a clockwise direction to the stop (do not tighten it).
  • Page 90 Assembly - Disassembly Service manual Fig. 7-074 Replace the hood/grinder seal (k) with the thicker rubber side down in the grinder. Fig. 7-075 7.10.2 Disassembling the coffee grinder powder outlet Carry out the instructions inDismantling - A, paragraph page Fig. 7-076 Mark the positions of the grinder setting disk (a), the worm gear (b) and the adjusting ring (c) with a pencil.
  • Page 91 Service manual Assembly - Disassembly Fig. 7-079 Pull the powder outlet upwards to remove it. a Powder outlet b Wire (must be intact breaks up the ground coffee) Fig. 7-080 Carefully press the grinder setting disk (a) and the worm gear (b) onto the grinder until the retainers are properly engaged.
  • Page 92 Assembly - Disassembly Service manual Fig. 7-083 Remove the 3 screws Installation Fig. 7-084 To assemble the grinder correctly, the centering cam on the plate must fit into the groove on the grinder housing. Fig. 7-086 Fig. 7-085 Fig. 7-087 The two fixing screws on the plate (see fig.
  • Page 93 Assembly - Disassembly 7.10.4 Adjusting grinder current consumption - Siena The current value must be correct for the integrated grinder. If this is not the case, the “no beans” message will not display correctly and the grinder will not stop even if the bean container is empty or it will stop although there are still beans in the bean container.
  • Page 94 Assembly - Disassembly Service manual 7.11 Disassembling the ceramic valve (Functional description: Ceramic valve, paragraph 5.3.15 page 5-19) Carry out the instructions in Dismantling - A, paragraph page Fig. 7-091 Pull the notched spring (a) and the notched ring (b) off the ceramic valve disc simultaneously.
  • Page 95 Service manual Assembly - Disassembly Fig. 7-097 Take note stalled.Ceramic valve disk (a) seen from the rear Fig. 7-098 Place the ceramic valve disk (a) on the 2 centering pins (b) and press it carefully until the two retainers (c) are properly engaged. Fig.
  • Page 96 Assembly - Disassembly Service manual Fig. 7-102 Disconnect the hot water pipe from the Legris angle fitting. Fig. 7-103 Check the o-ring for damage and secure the thread on the steam nozzle with Loctite 243 (blue) (Fig. 7-102) Ensure that the positioning ring (a) and the guide ring are positioned correctly.
  • Page 97 Service manual Assembly - Disassembly 7.13 Disassembling the instant heater (IH) / steam generator (SG) (Functional description: Safety thermostat paragraph 5.3.18 page 5-21) (Functional description: Instant heater, paragraph 5.3.22 page 5-25) (Functional description: Steam generator, paragraph 5.3.23 page 5-26) Carry out the instructions in Dismantling - A, paragraph page...
  • Page 98 Assembly - Disassembly Service manual Fig. 7-110 Disconnect the electrical connections from the following elements: (k) SG heating (to the control board) (l) IH heating (to the control board) (m) SG safety thermostat (blue) (n) IH safety thermostat (blue) (o) SG ground cable (p) IH ground cable (q) SG level probe Then remove the cable from the retain-...
  • Page 99 Service manual Assembly - Disassembly Fig. 7-115 Tighten the Legris connectors (a) to 2.2 Nm 2.2 Nm 7.14 Disassembling the level probe (Functional description: Level probe, paragraph 5.3.19 page 5-22) Disconnect the machine from the mains. Turn the handle to the steam setting to Fig.
  • Page 100 Assembly - Disassembly Service manual Fig. 7-123 Disconnect the electrical connection (a) from the SG tempera- ture sensor. Loosen the union nut (b) and pull the level probe out. 7.15 Disassembling the safety valves Functional description: Safety valve, paragraph 5.3.13 page 5-17) Disconnect the machine from the mains Turn the handle to the steam setting to...
  • Page 101 Service manual Assembly - Disassembly Fig. 7-131 Fig. 7-132 Fig. 7-133 Tighten the Legris connectors (a) to 2.2 Nm 2.2 Nm 7.16 Disassembling the connection piece (supply pipe - brewing unit) Fig. 7-134 Pull out the water container Remove the brewing unit (as described in "Dismantling - A") Using a screwdriver, from the water container side, gently press the...
  • Page 102 Assembly - Disassembly Service manual 7.17 Disassembling the tank valve Carry out the instructions in Dismantling - A, paragraph page Carry out the instructions in Dismantling - B, paragraph page 7-10 Carry out the instructions in Dismantling - paragraph page 7-11 Fig.
  • Page 103 Service manual Assembly - Disassembly Fig. 7-143 Tighten the Legris connections (a) to 2.2Nm. 2.2 Nm 7.19 Disassembling the vibrating armature pump (Functional description: Vibrating armature pump, paragraph 5.3.9 page 5-15) Disconnect the machine from the mains. Fig. 7-144 Fig. 7-145 Fig.
  • Page 104 Assembly - Disassembly Service manual Fig. 7-149 Unscrew the Legris connector out of the non-return valve of the pump. Legris connector Flat packing (when you have removed it, inspect the Legris connector for damage and re- place it if necessary) Vibrating armature pump Thermostat (monitors...
  • Page 105 Service manual Assembly - Disassembly Fig. 7-152 O-ring Impeller Flow meter cup (lower section with baffle) Fig. 7-153 Ensure that the silicon tubes (f) + (g) are not kinked when you fit them. The water inlet (h) and the outlet (i) of the flow meter must lie one above the other Right: Fig.
  • Page 106 Assembly - Disassembly Service manual 7.20.2 Disassembling the flow meter with the cable Carry out the instructions Dismantling - A, paragraph page Carry out the instructions Dismantling - B, paragraph page 7-10 Fig. 7-156 Pull off silicon tubes (a) + ( b) Carry out the instructions Dismantling - paragraph...
  • Page 107 Service manual Assembly - Disassembly 7.21 Disassembling the coffee outlet Carry out the instructions in Dismantling - A, paragraph page Fig. 7-159 Remove the 3 screws (a) Fig. 7-160 Pull the tube forwards out of the retainer (b) Fig. 7-161 Pull the coffee outlet retainer (c) off forwards.
  • Page 108 Assembly - Disassembly Service manual Fit the coffee outlet (h) to the front. Fig. 7-163 Fit the four centering pins (i) in the centering holes (k) Fig. 7-164 Fit the retainer (l) in the front cover Fig. 7-165 Fig. 7-166 7.22 Disassembling the Reed switch (water level in the water tank) Carry out the instructions in the...
  • Page 109 Service manual Assembly - Disassembly Fig. 7-168 Pull the Reed contact (b) out sideways Remove the cable strands from the machine. Fig. 7-169 Push the Reed switch (b) all the way to the stop (c) 7.23 Disassembling the transformer (Functional description: Transform, paragraph 7.24 page 7-38) Carry out the instructions in the...
  • Page 110 Assembly - Disassembly Service manual Carry out the instructions in Dismantling - paragraph page Disconnect the electrical connections (b) +(c) from the transformer to the control board carefully. Remove the cable from the machine. Fig. 7-173 7.24 Disassembling the pull-out cable Carry out the instructions in Dismantling - A, paragraph...
  • Page 111 Service manual Assembly - Disassembly Fig. 7-176 Fit the back panel (f) behind the screw hole (g) to the base plate. 7.25 Disassembling the (mains) connection cable Carry out the instructions in Dismantling - A, paragraph page Pull out the cable Remove the screws Fig.
  • Page 112 Assembly - Disassembly Service manual 7.27 Disassembling the microswitch 7.27.1 Disassembling the brewing unit pull-out section microswitch Disconnect the machine from the mains. Remove the brewing unit Carefully push the four holders (a) outwards slightly and pull the mi- croswitch housing (b) away from the panel (c). Fig.
  • Page 113 Service manual Assembly - Disassembly 7.27.3 Disassembling the ceramic valve microswitch Carry out the instructions in Dismantling - A, paragraph page Carefully push the two holders (a) outwards slightly and pull the mi- croswitch (b) (watertight) away. (c) orange (d) red Fig.
  • Page 114 Assembly - Disassembly Service manual 7.28 Disassembling the keyboard panel (Functional description: Disassembling the keyboard panel, paragraph 7.28 page 7-42 Carry out the instructions in Dismantling - A, paragraph page You must observe the regulations: ESD protection (electro static discharge), paragraph 5.3.27.1 page 5-29...
  • Page 115 Service manual Assembly - Disassembly Fig. 7-188 Remove the 2 screws (d) 7.30 Disassembling the steam valve (only for machines with cappuccino) (Function check: Solenoid valves, paragraph 5.3.14 page 5-18) Carry out the instructions in Dismantling - A, paragraph page Fig.
  • Page 116 Assembly - Disassembly Service manual Installation: Note: The valve (i) and the aluminium plate (k) must be separated by two layers of flat packing (l). Otherwise, the aluminium plate (k) cools the valve (i) and the steam flowing through it too much.
  • Page 117 Service manual Assembly - Disassembly Installation: Important note: The valve (i) and the aluminium plate (k) must be separated by two layers of flat packing (l). Otherwise, the aluminium plate (k) cools the valve (i) and the water flowing through it too much.
  • Page 118 Assembly - Disassembly Service manual Check the o-rings (f) and the Cappuccina- tore steam nozzle (c). Fig. 7-201 7.33 Disassembling the ECCO cappuccino outlet (only for machines with the ECCO cappuccino option) (Function check: Cappuccinatore (Ecco foamer head), paragraph 5.3.17 page 5-20) Carry out the instructions in Dismantling - A,...
  • Page 119 Service manual Assembly - Disassembly 7.34 Disassembling the mains water connection 7.34.1 Disassembling the flow meter (only for machines with mains water option) (Function check: Flowmeter / mains water, paragraph 5.3.11 page 5-16) Fig. 7-206 Loosen the screw on the tube clamp (a) and pull the tube (b) away from the flow meter(c) Undo the Serto union (d) Carefully disconnect the electrical connections from the valve:...
  • Page 120 Assembly - Disassembly Service manual 7.34.2 Disassembling the flow meter plug (only for machines with mains water option) (Function check: Flowmeter / mains water, paragraph 5.3.11 page 5-16) Fig. 7-210 Remove the screw from the flow meter plug (a) Unscrew the cable harness (b) Fig.
  • Page 121 Service manual Assembly - Disassembly 7.34.3 Disassembling the water valve (only for machines with mains water option) (Function check: Solenoid valves, paragraph 5.3.14 page 5-18) Fig. 7-213 Loosen the screw on the tube clamp (a) and pull the tube (b) away from the flow meter(c) Undo the Serto union (d) Carefully disconnect the electrical connections from the valve:...
  • Page 122 Assembly - Disassembly Service manual Fig. 7-216 Disconnect the Serto union (c) Fig. 7-217 Example of illustration Fig. 7-218 When fitting the water supply pipe (d), ensure the distance to the base plate (e) is maintained (noise from vibration). Place an object between the base plate and the water supply pipe (for example a fork wrench, approx.
  • Page 123 Service manual Elecrtical meausuring points CHAPTER ELECTRICAL MEASURING POINTS Important general information about measuring electrical current and resistance......page Trouble-shooting electrical circuits ....................page Selecting the test locations....................... page Continuity test........................... page 8.4.1 “Klixon” safety thermostat (instant heater and steam generator) ............page 8.4.2 Microswitch (limit switch) ........................
  • Page 124 Elecrtical meausuring points Service manual Important general information about measuring electrical current and resistance Danger to life As a basic principle, you must always ensure that you put in place stringent safety precautions when you carry out measurements on a machine that is still connected to the power supply. When carrying out any work on electrical appliances, fatal injuries may be caused by electric shock, if live parts are touched.
  • Page 125 Service manual Elecrtical meausuring points Continuity test For some elements it is sufficient to carry out a simple continuity test. Using a continuity tester it is easy to establish whether the element being tested does or does not have continuity. Depending on the circumstances, this tells you whether the element is faulty or not.
  • Page 126 Elecrtical meausuring points Service manual Unplug the safety thermostat. Hold the measuring probes of the continuity tester against the safety thermostat connections (fig. 8-004). power supply to microswitch interrupted: The continuity tester indicates no continuity. Close the microswitch Continuity on the microswitch: The continuity tester indicates continuity.
  • Page 127 Service manual Elecrtical meausuring points 8.4.5 Fine fuse (on the control board) The fine fuse for the control board must be closed, i.e. continuity Fig. 8-007 Switch off the coffee machine and disconnect it from the mains supply Hold the measuring probes of the continuity tester against the ends of the fine fuse (fig.
  • Page 128 Elecrtical meausuring points Service manual Resistance measurement (Ω) Measuring ohms (Ω) finds the resistance of an element. The values indicate whether there might be a fault. To measure resistances, switch off the coffee machine and disconnect it from the mains supply.
  • Page 129 Service manual Elecrtical meausuring points 8.5.3 Heaters The guide value for a 230 V heating element at an approximate temperature of 20°C is approx. 50 Ohm. If the multimeter indicates 0 or infinite, then it is very likely that the heater is faulty. Fig.
  • Page 130 Elecrtical meausuring points Service manual Measure at the soldering points on the rear of the control board (fig 8-013 & 8-014). Ensure that you use the cor- rect soldering points for the measurement. Connector pin assignment x11, see Control board component lay- out, paragraph 5.3.27.2, page...
  • Page 131 Service manual Elecrtical meausuring points Fig. 8-018 Reconnect the earth to the control board 8.5.5 Grinder and brewing unit motors It is very difficult to carry out an ohm measurement of the motors (grinder and brewing unit). Depending on the position of the armature relative to the housing, the level of the values varies. If the value is <...
  • Page 132 Elecrtical meausuring points Service manual 8.5.7 Transformer Guide value: Primary 220 V approx. 15 Ohm cable blue / brown Secondary 24 V approx. 0.4 Ohm cable white / white Fig. 8-021 Switch off the coffee machine and disconnect it from the mains supply Unplug the transformer from the control board.
  • Page 133 Service manual Elecrtical meausuring points 8.5.8.1 NTC table Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance in °C in Ω in °C in Ω in °C in Ω in °C in Ω 0....34'058 1....32'290 61 ....2'363 121 ....383 181 ....
  • Page 134 Elecrtical meausuring points Service manual 8.5.9 Valves The guide value for a valve coil is 56 Ohm If the valve is measured with the cable, the value increases by the cable’s resistance. If the measurement is infinite, the valve coil is defective. A measurement of 0 (zero) indicates a cable short circuit.
  • Page 135 Service manual Programming CHAPTER PROGRAMMING (OPERATING THE SERVICE PROGRAM WITH A LAPTOP) Installing the service program on the PC laptop................page 9.1.1 Windows system requirements......................page 9.1.2 Uninstalling an existing service program ..................... page 9.1.3 Installing the service program......................page Connecting the PC to the coffee machine..................
  • Page 136 Installing the service program on the PC laptop. 9.1.1 Windows system requirements The Siena service program is compatible with the following Windows programs The Siena service program is compatible with the following Windows programs Windows ME / 2000 / XP...
  • Page 137 Remember that the graphics vary depending on which Windows operating system is installed. The examples il- lustrated show the Windows XP operating system. To start the preparation for installation, double-click the “SIENA Service.msi” icon (If the program is on a CD-ROM or a diskette, it might Fig. 9-005 need to be unpacked first) Fig.
  • Page 138 Programming Service manual Fig. 9-009 When all the data is correct, click on the “Install” button to start installing. Fig. 9-010 When the installation is complete, click on the “Finish” button. The installation window closes. Page 9-4 BASI - 02 - V03...
  • Page 139 Service manual Programming Connecting the PC to the coffee machine Fig. 9-011 Connect the connection cable to your PC via a COM in- terface. Start up your PC Fig. 9-012 Connect the coffee machine to the mains supply Switch the coffee machine off at the main switch. The red LED on the ON/OFF button lights up.
  • Page 140 Programming Service manual Windows error "write file function failed (win error code: 6) If this message appears when the service program starts up (fig. 9-017a) you need to cancel the current process " wcescomm.exe" in Windows Task Manager. Fig. 9-017a Fig.
  • Page 141 So that you can work with the program, the coffee machine should be connected to the mains and set to “Standby” (the red LED by the ON/OFF button is lit up). Start the service program with the “Siena Service” icon. Fig. 9-018 If this message shown in fig.
  • Page 142 Programming Service manual Service program settings following installation 9.5.1 Checking and adjusting the COM interface Fig. 9-022 In the open Start Program window you will see in the bottom left-hand corner the COM interface installed by the operating system (a). You can adjust the COM interface if there are problems with the connection between the PC and the coffee ma- chine.
  • Page 143 Service manual Programming 9.5.2 Entering the service point number Fig. 9-026 Carry out steps 1-4 described in Checking and adjusting the COM interface, paragraph 9.5.1, page 9-8. Enter your service point number in the “Service point number” field (example 3302). Settings (continued) 9.6.1 Setting the language...
  • Page 144 Programming Service manual 9.6.3 Saving data Fig. 9-030 Carry out steps 1-4 described in Checking and adjusting the COM interface, paragraph 9.5.1, page 9-8. Click on the “Save file” tab Click on the icon (a) and enter the location where you want to save the file.
  • Page 145 Service manual Programming Load Loads the coffee machine data (control system) into the service program • The coffee machine data must be loaded into the service program at the start. • Following “Factory settings” or “Master Rest” the coffee machine data must be updated in the ser- vice program or reloaded.
  • Page 146 Programming Service manual 9.10 Assigning product buttons Fig. 9-037 Right-click in the white field to display the context menu and click on “Assign product buttons”. Fig. 9-038 Click a button and the product you want to assign. Re- peat the procedure with each button you want to assign. To copy the data to the service program, click on the “Product”...
  • Page 147 Service manual Programming 9.12 Delete de-scaling The “Delete de-scaling” button sets the counter for the de-scaling reminder to zero. Fig. 9-041 Right-click in the white field to display the context menu and click on “Delete de-scaling” Accept them with YES or reject with the NO in the win- dow that follows.
  • Page 148 Programming Service manual 9.14 System status menu You can use the “System status” menu” (“Display status”) to check the values and settings of each key. It also displays possible errors. Fig. 9-046 Click on the “System status” icon Switch the coffee machine on with the ON/OFF button. Fig.
  • Page 149 Service manual Programming 9.14.2 Regulating the heaters You can display the current values for regulating the heaters to check them. Fig. 9-051 Click on the “System status” icon Fig. 9-052 Right-click (white field) to display the context menu and click on “Heater control” The “Heater control status”...
  • Page 150 Programming Service manual Fig. 9-056 You can change all the settings in the fields in this win- dow. All the data entered is automatically copied to the service program when you leave the window. To send the data from the service program to the E the coffee machine control board, click on the “Send”...
  • Page 151 (to save a newly created file or a file opened under another name) The files are saved with the suffix “.cfg” (default direc- tory: C:\Programme\Schaerer\Siena\Data\ 9.15.3.2 Saving a project Use the menu commands “Project” “Save as” to save the coffee machine data with meter readings This allows you to save configurations and meter readings.
  • Page 152 Programming Service manual 9.15.5 Statistics You can view all the meter readings with the Statistics option. The daily counters are set to zero with Delete counters. Fig. 9-063 Click on the “Programming” icon Display (or “Statistics” in the Start window) Statistics Fig.
  • Page 153 Service manual Programming Fig. 9-067 Double-click on a “Service Code” field The service code which shows which elements were re- placed by the service engineer is displayed. 9.15.6.2 Write History data Fig. 9-068 Carry out Viewing the History, paragraph 9.15.6.1 items 1 to 3, page 9-18.
  • Page 154 Programming Service manual 9.15.7 Index Table The “Index Table” contains the frequency of the de-scaling reminder i.e. after how many product serv- ings it is activated. This varies with the hardness of the water. Fig. 9-071 Click on the “Programming” icon Index table Fig.
  • Page 155 Service manual Programming 9.16 Test functions 9.16.1 Measured value / status The products and the 2x, DECAF and cleaning functions can be started from the “Test functions” “Measurement value / Status” menu option to check how the program is working. Fig.
  • Page 156 Programming Service manual 9.16.2 Output test / status The function of the valves, vibrating armature pump, brewing unit etc. can be tested from the “Test functions” “Output test / Status” menu option. Fig. 9-076 Click on the “Test functions” icon Fig.
  • Page 157 Service manual Programming 9.16.3 Emergency operation reset If the flow meter develops a fault, the system uses the most recently set values (brewing time). You can use the “Emergency Operation reset” menu option to reset the current values to a permanent value (15.00).
  • Page 158 Programming Service manual 9.16.5 Master Reset The "Master Reset" sets all the statistics to zero Statistics, paragraph 9.15.5, page 9-18) and the factory settings are saved from the E on the control board and cannot be changed( Factory settings, paragraph 9.11, page 9-12).
  • Page 159 Service manual Diagrams / Technical data CHAPTER DIAGRAMS / TECHNICAL DATA 10.1.1 Lubrication chart See Lubrication chart for the brewing unit, section 5.3.8.1, page 5-14 10.1.2 Control system component layout See Control board component layout, section 5.3.27.2, page 5-30 10.1.3 Keyboard PCB See Keyboard PCB, section...
  • Page 160 Diagrams / Technical data Service manual 10.1.4 Power supply (Diagram set 1 of 5) Page 10-2 BASI - 02 - V03...
  • Page 161 Service manual Diagrams / Technical data 10.1.5 Heater controller (diagram set 2 of 5) SMSI - 02 - V03 Page 10-3...
  • Page 162 Diagrams / Technical data Service manual 10.1.6 Motor driver (diagram set 3 of 5) Page 10-4 BASI - 02 - V03...
  • Page 163 Service manual Diagrams / Technical data 10.1.7 uP, I/O (processor (diagram set 4 of 5) SMSI - 02 - V03 Page 10-5...
  • Page 164 Diagrams / Technical data Service manual 10.1.8 Keyboard display (diagram set 5 of 5) Page 10-6 BASI - 02 - V03...
  • Page 165 Service manual Diagrams / Technical data 10.1.9 Pipework diagram 3.8.5520 SMSI - 02 - V03 Page 10-7...
  • Page 166 Diagrams / Technical data Service manual 10.1.9.1 With water tank 10.1.9.2 With mains connection Page 10-8 BASI - 02 - V03...
  • Page 167 Service manual Diagrams / Technical data 10.1.10 Installation plan with mains water connection Beans container Extension 3/8" connection Minimum dis- tance to rear wall Both ends of the pipe Installed by the customer Parts Required for Installation Reinforced hose 1000mm/8" Screw fitting SO 1100-10-1/4"K Non-return valve Connection...
  • Page 168 Diagrams / Technical data Service manual 10.1.11 Coffee machine - laptop service cable Page 10-10 BASI - 02 - V03...
  • Page 169 Service manual Special information KAPITEL SPECIAL INFORMATIO 11.1 Grinding quantity test ........................page 11-2 11.2 De-scaling a machine with mains water connection ..............page 11-3 11.3 Emptying ............................page 11-5 11.4 Information relating specifically to the OPAL ................page 11-7 11.4.1 OPAL control panel ..........................
  • Page 170 Special information Service manual 11.1 Grinding quantity test Ensure that the system does not need to rinse when you switch it on for the grinding quantity test. Switch the machine on in advance so that the system can carry out a rinse and then switch it on again immediately before the grinding quantity test.
  • Page 171 Important: 12mm fork wrench If the low water level indicator short Philips screwdriver no.3 flashes during the de- “Schaerer“ de-scaling agent, 0.75 lt. scaling process, add more Silicon tube (included with the mains water connection water. kit) The de-scaling program con- 2 approx.
  • Page 172 Special information Service manual Attention: Remove the brewing 9.1.17 Fig. 11-013 The decalcification program unit, fit the water tank cover may not be interrupted and fasten it in place with the when initiated! 2 screws (a). Replace the brewing unit and As soon as the LED close the service hatch.
  • Page 173 Service manual Special information 11.3 Emptying The coffee machine should be emptied to prevent water residue freezing and damaging the machine. Remove the brewing unit and clean it (fig. 8-016(1)). 9.2.1 Fig. 11-016 Clean the area around the brewing unit with a vacuum cleaner (fig. 9.2.2 8-016(1)).
  • Page 174 Special information Service manual Plug in the cable (fig. 8-020 (a)) connecting the computer (laptop) 9.2.11 Fig. 11-021 with the control board. (The machine is turned on its side) Press “Ctrl” and “D” simultaneously in the service program as it 9.2.12 runs.
  • Page 175 Service manual Special information 11.4 Information relating specifically to the OPAL 11.4.1 OPAL control panel .......................... page 11-8 11.4.1.1 Control panel ............................ page 11-8 11.4.1.2 Explanation of LED signal lamps ...................... page 11-8 11.4.2 OPAL key combinations ........................page 11-9 11.4.3 OPAL fault diagnosis ........................
  • Page 176 Special information Service manual 11.4.1 OPAL control panel Fig. 11-023 11.4.1.2 Explanation of LED signal lamps 11.4.1.1 Control panel This indicates the values you have set on a scale of 1 to 6 On/Off button for the required coffee quantity, temperature, standby and Ready mode indicator (green) status ê...
  • Page 177 OPAL key combinations The following key combinations have been integrated into the software of the Schaerer OPAL coffee machine. They are executed by pressing and holding down one or two keys and then switching on the machine at the same time.
  • Page 178 Special information Service manual 11.4.5 OPAL diagrams 11.4.5.1 Circuit diagram Electrical schema 3.6.7899 a Page 11-10 BASI - 02 - V03...
  • Page 179 Service manual Special information 11.4.5.2 Control board component layout SMSI - 02 - V03 Page 11-11...
  • Page 180 Special information Service manual 11.4.5.3 Operator PCB (component layout) Page 11-12 BASI - 02 - V03...
  • Page 181 Service manual Special information 11.4.5.4 Operation SMSI - 02 - V03 Page 11-13...
  • Page 182 Special information Service manual 11.4.5.5 Control board power Page 11-14 BASI - 02 - V03...
  • Page 183 Service manual Special information 11.4.5.6 Control board logic SMSI - 02 - V03 Page 11-15...
  • Page 184 Special information Service manual 11.4.5.7 SSR diagram Page 11-16 BASI - 02 - V03...
  • Page 185 A B C D E F G H I K L M N O P S T U V W Text Kapitel Seite Index Adjusting grinder current consumption - Siena ................7.10.4 ..... 7-21 Assembling / installing the components ................... 7.2.3 ....assembly - disassembly........................7 ..... Assigning product buttons........................ 9.10 ....
  • Page 186 Index Service manual Text Kapitel Seite Index Data Reset............................9.16.4 ..... 9-23 Delete counter ..........................9.13 ....9-13 Delete de-scaling ..........................9.12 ....9-13 De-scaling a machine with mains water connection ................ 11.2 ....11-3 Designated use..........................2.1.3 ....Diagrams / Technical data ....................... 10 ....10-1 Disassembling the (mains) connection cable...................
  • Page 187 Service manual Index Text Kapitel Seite Index Electrical measuring points ......................8 ..... Electronic regulations ........................2.2 ....Emergency operation reset......................9.16.3 ..... 9-23 Emptying............................11.3 ....11-5 Emptying the system ........................9.16.6 ..... 9-24 Entering the service point number ....................9.5.2 ....Equipment............................
  • Page 188 Index Service manual Text Kapitel Seite Index Illustrations............................3.2.2 ....Important general information about measuring electrical current and resistance ......8.1 ....Index ..............................12 ....12-1 Index Table ............................9.15.7 ..... 9-20 Information relating specifically to the OPAL ................... 11.4 ....11-7 Installation plan with mains water connection ..................
  • Page 189 Loads the service program data into the coffee machine (control system) ....9.9 ....9-11 Serial number ..........................5.2.2 ....Service intervals for the SIENA coffee machine ................4.1 ....Service program ..........................9.4 ....Service program settings following installation ................9.5 ....
  • Page 190 Index Service manual Text Kapitel Seite Spare parts ............................3.1.3 ....Special informatio ..........................11 ....11-1 SSR diagram ........................... 11.4.5.7 ..11-16 Starting the program ........................9.4.1.1 .... Statistics ............................9.15.5 ..... 9-18 Steam generator ..........................5.3.23 ..... 5-26 Steam with Cappuccino ........................
  • Page 191 Service manual Index Text Kapitel Seite Index Waste water connection........................2.3.2 ....Waste water connection........................5.2.7 ....Water filter / Decalcifier........................5.2.6 ....Water specifications (Option) ......................5.2.5 ....Water- Steam- System........................6.6 ....Water tank Reed switch ........................8.4.4 ....Windows error "write file function failed (win error code: 6) ............
  • Page 192 Index Service manual Page 12-8 BASI - 02 - V03...