Bosch tca60f9 Repair Instruction
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Bosch tca60f9 Repair Instruction

Fully-automatic
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1
SAFETY ........................................................ 3
1.1
Safety instructions.............................................................. 3
1.2
Repair instructions ............................................................. 3
2
INSTALLATION ............................................ 4
2.1
Installation ........................................................................... 4
2.2
Scope of delivery ................................................................ 4
3
OPERATION ................................................. 5
3.1
Switching on the appliance................................................ 5
3.2
Controls ............................................................................... 6
3.3
Preparation ........................................................................ 11
3.4
Changing the standard settings ...................................... 12
3.5
Cleaning............................................................................. 16
3.6
Descaling ........................................................................... 17
4
COMPONENTS........................................... 21
4.1
Structure ............................................................................ 21
4.2
Flowmeter .......................................................................... 22
4.3
Heater and NTC-sensor .................................................... 23
4.4
Control module and appliance software ......................... 25
4.5
Service door ...................................................................... 26
4.6
Brewing unit ...................................................................... 27
4.7
Gear unit ............................................................................ 33
4.8
Ceramic valve (2-way valve)............................................. 37
4.9
Hot water / steam nozzle .................................................. 39
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Fully-automatic coffeemaker
4.10
Coffee outlet...................................................................... 40
4.11
Drip tray............................................................................. 42
4.12
Water filter......................................................................... 44
5
FUNCTIONS................................................45
5.1
The perfect espresso........................................................ 45
5.2
Operating principle........................................................... 45
5.3
Warming the cups............................................................. 45
5.4
Diaphragm regulator with blow-off valve ....................... 46
5.5
5.6
Temperature...................................................................... 47
5.7
Overview of the symbols ................................................. 48
6
REPAIR .......................................................60
6.1
Replacing the brewing unit.............................................. 60
6.2
General disassembly........................................................ 64
6.3
Replacing the thermal fuse.............................................. 65
6.4
Removing the coffee outlet.............................................. 67
6.5
7
FAULT DIAGNOSTICS ...............................73
7.1
Malfunctions ..................................................................... 73
7.2
System and error messages ............................................ 79
7.3
Incoming goods inspection ............................................. 85
7.4
Service diagnosis ............................................................. 86
7.5
Troubleshooting ............................................................... 92
7.6
Measuring the coffee temperature .................................. 98

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  • Page 1: Table Of Contents

    Fully-automatic coffeemaker 4.10 Coffee outlet..............40 SAFETY ............3 4.11 Drip tray................42 Safety instructions.............. 3 4.12 Water filter................. 44 Repair instructions ............. 3 FUNCTIONS..........45 INSTALLATION ..........4 The perfect espresso............45 Installation ................4 Operating principle............45 Scope of delivery ..............4 Warming the cups.............
  • Page 2 TECHNICAL SPECIFICATIONS ....99 Rating plate ............... 99 Power ................100 Temperatures ..............100 Dimensions and weight ..........101 Filling amounts ............... 101 Components ..............102 58300000111195_ARA_en_f.doc – 02.06.09 Seite 2 von 102...

  • Page 3: Safety

    SAFETY Safety instructions Repair instructions Danger! Caution! ► ► Repairs may be carried out by a qualified electrician only! NEVER attempt repairs by randomly replacing components! ► The user may be put at considerable risk and injured by ► ALWAYS proceed systematically and comply with the improper repairs! technical documentation for the appliance! ►...

  • Page 4: Installation

    INSTALLATION Installation Scope of delivery ► The installation location must be level and dry. All appliances are supplied with the “Welcome pack” starter kit. ► Protect the appliance from splash water. 2.2.1 Welcome pack ► There must be a minimum filling height of 420 mm. The “Welcome pack”...

  • Page 5: Operation

    OPERATION The appliance conducts a self- test, heats up and rinses. Switching on the appliance ► Heating standby temperature Risk of damage! Do not use coffee beans which have been glazed, ► Moving the brewing unit to the caramelised or treated with other additives containing upper end position sugar.

  • Page 6: Controls

    Controls 3.2.1 Mains switch 3.2.2 Standby button The mains switch on the rear of The Stand-by button switches on and starts the the appliance switches the power appliance or switches it from brewing mode to stand-by. supply on or off. When the standby button has been pressed, the When the mains switch is switched appliance heats up and is then rinsed.
  • Page 7 3.2.3 Function selector Coffee dispensing button 3.2.4 ► Press the coffee dispensing button to start the Risk of scalding! coffee brewing process. When steam or hot water is released, the nozzles During the brewing process the green illuminated ring may initially sputter! flashes.
  • Page 8 3.2.5 Filling quantity selector 3.2.6 Coffee strength selector This rotary knob is used to select the amount of liquid which is The amount of coffee to be ground can be changed by rotating the required. coffee strength selector. This setting affects the aroma and flavour, the caffeine and acid content as well as the formation of the crema.
  • Page 9 3.2.7 Cleaning button 3.2.8 Descaling button When the red illuminated ring lights up around the When the red illuminated ring lights up around the cleaning button clean, the appliance must be cleaned. descaling button calc, the appliance must be descaled. Coffee can still be brewed.
  • Page 10 3.2.9 Adjusting the grinding unit 3.2.9.1 Service-Sticker To make sure that the grinding unit will be adjusted correctly a sticker Dependent on the roasting degree and on the oil rate of the used is added on the right cover of the appliance. coffee beans the grinder setting must be changed ►...

  • Page 11: Preparation

    Preparation 3.3.2 Using preground coffee General: Prewarm cups on the cup shelf or fill with hot water and Risk of damage! rinse out. Do not add whole coffee beans or instant coffee! Add a maximum two scoops of pre-ground coffee. 3.3.1 Using coffee beans WARNING...

  • Page 12: Changing The Standard Settings

    Changing the standard settings 3.4.1 Setting the water hardness The appliance has been set at the factory so that coffee can be It is important for the descaling programme that the brewed without any additional programming. water hardness is set correctly. If external water The following settings can be changed: softeners are used in the domestic water system or if filtered water is used, select water hardness 1...
  • Page 13 3.4.1.2 Change setting ► Press calc descaling button until the illuminated rings for the The appliance must be in stand-by mode. Only the illuminated ring desired water hardness light up. around the stand-by button is lit. If the illuminated ring around the cafe button flashes, the filter can be ►...
  • Page 14 3.4.2 Water filter 3.4.2.1 Inserting the water filter ► The appliance must be in A water filter available as an accessory (mat. no.: 46 1732) can be stand-by mode. inserted in the water tank. ► Place vessel with When approx. 50 l of water have run through (corresponds to approx. capacity of at least 500 ml 400 brews) or after 2 months at the latest, the effect of the filter is under the hot water nozzle.
  • Page 15 3.4.2.2 Changing the water filter 3.4.2.3 Removing the water filter ► Switch the appliance to ► Switch the appliance to stand-by mode. stand-by mode. ► Using the screwing aid, unscrew the water filter in an anti- ► Place vessel with clockwise direction.

  • Page 16: Cleaning

    Cleaning Risk of electric shock ► Before cleaning the appliance, pull out the mains plug! ► Never immerse the appliance in water! ► Do not use a steam cleaner! DANGER Risk of damage! ► Do not use any scouring agents! WARNING 3.5.1 Daily cleaning of the appliance...

  • Page 17: Descaling

    3.6.1 Descaling alarm Descaling The correct setting of the water hardness is important for the The lime content in drinking water causes calcification of the thermal descaling indicator. block, the hose system and the valves in the appliance. This affects the flavour of the coffee and reduces the service life of the appliance.
  • Page 18 3.6.2 Descaling programme ► Fill water tank up to the Warning! mark (0.5 l) with warm Never descale with water filter inserted! water and add descaling The descaling programme starts only if the FILTER agent programming is not active. Take the filter out of the water tank ►...
  • Page 19 3.6.2.2 Descaling programme ► ► Rotate function selector to Remove water tank, rinse coffee brewing process. out, fill with fresh water and re-insert. appliance descaled ► automatically. Descaling solution Empty collecting vessel and (approx. 250 ml) is conveyed in place back under the steam intervals into the drip tray via the nozzle.
  • Page 20 3.6.2.3 Descaling programme 3.6.2.4 The descaling programme does not start: appliance rinsed auto- The descaling programme starts only matically. Water (approx. 300 ml) is if the FILTER programming is not conveyed in intervals into the drip active. tray via the drainage valve. ►...

  • Page 21: Components

    COMPONENTS Structure 4.1.1 Overview, left side Mains suppression filter Diaphragm controller (pressure controller) Mains transformer Flowmeter Pump Watertank valve support Gear unit Power electronics module Control electronics module Heating element Service plug Note: From production date FD8701 on: ► Implementation of a second thermal fuse on heater.

  • Page 22: Flowmeter

    4.2.1 Design and function Flowmeter Water is pumped in from the water The composition of the coffee tank flows through mixture is a well guarded secret of flowmeter. coffee roasting establishments. To ensure that an Water supplied excellent coffee can be produced connection pipe in the lower from this secret, the coffee beans section of the housing (D).

  • Page 23: Heater And Ntc-Sensor

    Heater and NTC-sensor 4.2.2 Connection diagram 4.3.1 Heater (Instantaneous water heater) In the instantaneous water heater the water for coffee production or hot water/steam purchase is heated up. The flowmeter itself does not supply an output voltage but simply switches the signal connection to 0 volt earth (actuated) or leaves it open (unactuated).
  • Page 24 4.3.2 Characteristic of NTC-sensor Temperature R min R nom R max 25 °C 9,78k 10,00K 10,22k 95 °C 0,77k 0,78k 0,80k 140 °C 0,232k 0,234k 0,237k 58300000111195_ARA_en_f.doc – 02.06.09 Seite 24 von 102...

  • Page 25: Control Module And Appliance Software

    Control module and appliance software The appliance is controlled by the control module. The control modules are differentiated by the respective appliance software and by the housing designs. The software versions within one CSI are usually compatible. Thanks to continuous improvements, new software masks are programmed, remove the older versions.

  • Page 26: Service Door

    Service door The service door on the right side of the appliance provides access to the brewing unit. 4.5.1 Door lock The service door, behind the brewing unit is installed, is locked with a bar. Open the door by rotating the locking knob in a clockwise direction. To ensure that the door is not opened without authorisation, e.g.

  • Page 27: Brewing Unit

    Brewing unit The brewing unit extracts the aroma, flavour and bitter agents from the ground coffee and forms the crema. 4.6.1 Operating principle Ground coffee pours through the filling shaft (A) into the brewing chamber and is compressed. Hot water is introduced under pressure via the water supply (B) and forced through the ground coffee.
  • Page 28 4.6.2 Sequence of the brewing cycle 4.6.2.1 Grinding and metering 4.6.2.2 Compression Coffee beans are ground in the grinding unit (A). The ground coffee is The grinding unit stops. The gears control the brewing unit to the conveyed into the open brewing chamber via the funnel (B). The upper end position.
  • Page 29 4.6.2.3 Brewing 4.6.2.4 Emptying The brewing process starts. The pressure pump conveys the water When the programmed amount of water is reached, the pump stops. into the brewing unit. The brewing head (D) is moved up by the water The pressure in the brewing chamber drops and the coffee dregs are pressure, thereby increasing the volume in the brewing chamber.
  • Page 30 4.6.3 Compensation of the grinding unit running time The amount of ground coffee which is generated by the grinding unit The electronics module measures the number of the voltage changes depends on the running time of the grinding unit. (connection A) caused by the switching processes which occur immediately before the pressure pump switches on and can therefore To ensure that the required amount of coffee is always ground, both detect whether and how much ground coffee has been metered.
  • Page 31 4.6.4 Reinforced brewing unit 4.6.4.1 Stripping-off clip To improve functional safety, a stripping-off clip (B) was fitted to the New, reinforced brewing units will be used from production date brewing unit (A). FD8307. Changes to components result in a higher pressure resistance in the complete brewing unit as well as improved functional safety of the entire machine.
  • Page 32 4.6.4.2 Control lever To improve functional safety, an additional rib (A) was fitted to the control lever of the brewing unit. A cleaning tablet which was inserted at the wrong time and did not fall into the brewing chamber could become jammed near the control lever of the brewing unit.

  • Page 33: Gear Unit

    Gear unit Note: From production date FD8701 on the drip tray is monitored by an additional microswitch in the The gear unit is the drive for the brewing unit. appliance. If the drip tray is pulled out, the microswitch The gear motor is actuated at +/– 16 V DC and transfers its power via opens and interrupts the power supply to the gear motor gears to a drive shaft which is connected to the brewing unit.
  • Page 34 4.7.3 Cam on the gear unit The position of the brewing unit is detected with two microswitches S1 and S2. These two switches are able to define three positions. When the appliance is switched on, the switch status of the microswitches is checked and transmitted to the control module.
  • Page 35 4.7.4 Drainage valve The drainage valve (B) connects the water inlet (A) to the brewing unit and drains the system at the end of the brewing cycle. 4.7.4.1 Home position Warning! When the gears are in the home position, the drainage valve is open. Malfunction The cam (E) of the actuator must then be in the illustrated position.
  • Page 36 4.7.4.2 Brewing position 4.7.4.3 Drainage position When the gears move into the brewing position, the drive shaft rotates Once the brewing process is complete, the water pump switches off. with the actuator (D) in an anti-clockwise direction. The brewing unit is moved upwards. The connection to the drainage The transmission motor turns the input shaft with tripping device (D) valve is closed with the water back through about 8°...

  • Page 37: Ceramic Valve (2-Way Valve)

    4.8.1 Switch matrix Ceramic valve (2-way valve) The microswitches S1 and S2 control the heater and pump via the By rotating the function selector on the front of the control panel, the logic board. The microswitches are actuated by rotating the cam. drawing of hot water (1), coffee (2) or steam (3) can be selected on the ceramic valve.
  • Page 38 4.8.2 Water flow The rotatable ceramic wheel releases the water or steam passage. The corresponding openings in the lower wheel are connected to each other via indentations in the upper wheel. (A) Inlet (B) Outlet to the steam pipe (C) Outlet to the drainage valve (brewing module) Drawing steam Drawing coffee Drawing hot water...

  • Page 39: Hot Water / Steam Nozzle

    4.9.1 Function Hot water / steam nozzle The steam flows through steam pipe Risk of burns! (A) and the connected steam nozzle, The nozzle gets very hot. thereby creating underpressure ► Do not touch the metal parts! inside the steam nozzle. DANGER This underpressure is balanced out by fresh air flowing in through...

  • Page 40: Coffee Outlet

    4.10 Coffee outlet The pump pressure conveys the brewed coffee from the brewing unit to the coffee outlet. The coffee runs into the coffee outlet (B) via a silicone hose (A). The brewing system opens here and the coffee flows into the overflow (C).
  • Page 41 4.10.1 Coffee outlet with optimised overflow An improved coffee outlet was introduced from production date FD8606. A newly introduced jug (1) in conjunction with changes to the distributor (2) and to the distributor cover (3) ensure a more even outlet with lower right – left tolerances. The coffee outlet is available only as a complete, pre-assembled spare part with or without chrome-plated outlet sleeves and replaces the previous coffee outlet.

  • Page 42: Drip Tray

    4.11 Drip tray 4.11.1 Tray contacts The tray contacts (A) detect whether ► the drip tray has been inserted. ► the drip tray has been filled with water. If the drip tray has not been inserted, an electric circuit is opened. TRAYS MISSING is displayed.
  • Page 43 4.11.2 Detection springs The drip tray features two tray contacts (A). When the drip tray is pushed all the way into the appliance, the detection springs (B) catch against the tray contacts from below. Therefore the following states can be measured ►...

  • Page 44: Water Filter

    4.12 Water filter The filter cartridge is screwed directly into the water tank. The filter cartridges can be used for all appliances belonging to this series. Carbon hardness, contents (e.g. chlorine) which impair taste and odour, heavy metals and other substances are reduced to protect the machine.

  • Page 45: Functions

    FUNCTIONS The perfect espresso A genuine espresso is prepared according to a specific extraction The sequences are monitored by sensors and microswitches. All process in which the water is forced under high pressure through functions are controlled and interlinked via the logic module. All units, finely ground coffee in order to release all the flavours.

  • Page 46: Diaphragm Regulator With Blow-Off Valve

    Diaphragm regulator with blow-off valve Reduction angle with blow-off valve (alternative) The water is drawn out of the water tank via the hose connection (A). The water is drawn out of the water tank via the hose connection (A). The water flows through the flow meter (B) and rotates the fan The water flows through the flow meter (B) and rotates the fan impeller inside.

  • Page 47: Temperature

    Temperature For Basic-variants TK60x /TCA60x the temperature 5.6.1 Temperature pattern level cannot be adjusted. Temperature setting is fixed by the factory. The temperature graph indicates the temperature pattern on the heater during operation. After coffee has been drawn, the appliance may be briefly disabled from reheating.

  • Page 48: Overview Of The Symbols

    Overview of the symbols 5.7.1 Rinsing 5.7.2 Filling the system Symbol is lit: Symbol is lit: When the appliance is switched The water line system in the on and off, the hose system is appliance is empty. rinsed with water. an empty water line system is being filled.
  • Page 49 5.7.3 Appliance is being cleaned 5.7.4 Appliance is being descaled Symbol is lit: Symbol is lit: The appliance is being cleaned. The appliance is being descaled. flashes flashes 58300000111195_ARA_en_f.doc – 02.06.09 Seite 49 von 102...
  • Page 50 5.7.5 System too hot 5.7.6 Filling with ground coffee – cover closed Both symbols flash: Coffee scoop flashes, The appliance is currently too hot Coffee cup is lit: for brewing ground coffee with too The ground coffee duct flap was little ground coffee.
  • Page 51 5.7.7 Preground coffee 5.7.8 Drawing coffee with preground coffee Both symbols flash: Both symbols are lit: Ground coffee was filled, the cover Preground coffee being is closed again. drawn Remark: Remark: Start coffee production by pressing If the coffee dispensing button the coffee dispensing button.
  • Page 52 5.7.9 Filling with beans 5.7.10 Coffee brewing in standby Both symbols flash: Symbol is lit: The bean container is empty. Indicates that the appliance is in normal operating mode. Coffee or hot water can be drawn. Remedial action: Fill the bean container and restart coffee production by pressing the coffee dispensing button.
  • Page 53 5.7.11 Drawing coffee 5.7.12 Appliance is heating up Symbol is lit: Symbol flashes: Coffee is being drawn. Appliance is heating up. Remark: Remark: flashes If the coffee dispensing button is Approx. 70 seconds pressed again, the drawing of coffee can be interrupted at any flashes time.
  • Page 54 5.7.13 Drawing steam 5.7.14 Appliance heats up to steam temperature Symbol is lit: Symbol flashes: Steam is being drawn. Heater heats up from coffee temperature steam temperature. Remark: Duration approx. 15 seconds flashes flashes 58300000111195_ARA_en_f.doc – 02.06.09 Seite 54 von 102...
  • Page 55 5.7.15 Filling with water 5.7.16 Empty the trays Symbol is lit: Symbol is lit: Too little water in the tank Drip tray or coffee dregs tray is full Water tank not or incorrectly inserted. the switch contacts on the drip tray are dirty.
  • Page 56 5.7.17 No trays 5.7.18 Turn on coffee Symbol flashes: Symbol is lit: Drip tray incorrectly For reasons of function the inserted. (The appliance cannot function selector must be set to detect the coffee dregs tray). the coffee position. Remedial action: Remedial action: Insert trays correctly Rotate function selector to the...
  • Page 57 5.7.19 Turn on water 5.7.20 Door not closed / No brewing unit “Turn on water” flashes 5 times, Symbol is lit: coffee cup is lit: Service door is not closed appliance heated drawing steam and should be Brewing unit is not or in- cooled down by drawing hot correctly installed.
  • Page 58 5.7.21 Changing the filter 5.7.22 Error 1 Both symbols are lit: Upper symbol is lit, When approx. 50 l of water have lower row flashes: through (corresponds approx. brews) after 2 months at the latest, the effect of the filter is depleted. Error 1 NTC temperature sensor is out- side the measurement range.
  • Page 59 5.7.23 Error 5 5.7.24 Error 8 Upper symbol is lit, Upper symbol is lit, lower row flashes: lower row flashes: Appliance is heating up. Brewing unit cannot move properly. Error 5 Error 8 Heater or thermal fuse defective Initialisation of the brewing unit (interrupted).

  • Page 60: Repair

    REPAIR Replacing the brewing unit 6.1.1 Removing the brewing unit To ensure that the door is not opened without authorisation, e.g. with The brewing unit is permanently installed in the appliance. a coin, the locking knob features an additional crosspiece (A). Open The service door on the right-hand side of the appliance provides the service door with a screwdriver PB 169/6 M4 (commercially access to the brewing unit by customers.
  • Page 61 6.1.1.2 Releasing the brewing unit When the service door has been opened, the brewing unit is Removing the brewing unit accessible. The brewing unit is secured in the appliance with three locks. (A) Remove 3 rubber caps with a flat screwdriver (B) Loosen 3 locks by rotating them with a flat screwdriver (C) Pull out brewing unit of the appliance Symbols on the brewing unit indicate whether the lock is open or...
  • Page 62 6.1.2 Replacing the brewing unit 6.1.2.1 Inserting the brewing unit Inserting the brewing unit The brewing unit can only be inserted in the basic position. ► The brewing chamber is located completely underneath the (A) Insert brewing unit into the appliance filling funnel.
  • Page 63 6.1.3 Greasing the brewing unit During a service, the O-ring for the coffee outlet (A), the lip seal surrounding the brewing head (B), the O-ring for the water inlet (C) and the coupling for the input shaft (D) must be thinly greased with food-safe special lubricating grease PARALIQ®...

  • Page 64: General Disassembly

    General disassembly Risk of electric shock! Pull out mains plug before disassembly. Appliance must not be live! DANGER! Tools: ► Torx-Screwdriver T10 6.2.1 Procedure: Remove the water tank (A) from the appliance. Remove back panel (E) to rear. Remove the aroma protection cover (B) from the bean container. Remove upper section of housing to rear and up.

  • Page 65: Replacing The Thermal Fuse

    6.3.3 Installation location Replacing the thermal fuse Screw with circlip The thermal fuse (STB) is a safety element which is Installation bracket used to prevent damage caused by the heater Heater overheating. To ensure correct function, it is essential to install the thermal fuse properly.
  • Page 66 6.3.4 Installing / replacing the thermal fuse: Insert installation bracket into the designated guide. (Ensure that the bracket is inserted according to the picture) ► Attach installation bracket with the corresponding screw and After removing the defective thermal fuse, circlip. comply with the following new steps to ensure correct installation: Following installation, check that the installation bracket on the...

  • Page 67: Removing The Coffee Outlet

    Removing the coffee outlet 6.4.1 Opening the coffee outlet 6.4.2 Loosening the coffee distributor ► ► To open the coffee outlet, insert a flat-tipped screwdriver into First remove the silicone hose (A). Remove the coffee the catch on the underside of the outlet slide (1.), loosen the distributor (B) after detaching the catches (C).
  • Page 68 6.4.3 Loosening the metal bands 6.4.4 Removing the metal bands ► The steplessly height-adjustable coffee outlet is braked by metal Using a flat-tipped screwdriver, press the metal band (A) bands on which magnets press. downwards. For subsequent removal: ► Press the outlet slide all the way down (1.) ►...
  • Page 69 6.4.5 Loosening the screw fittings When the metal bands have been removed, the screw fittings are accessible. Attachment of the outlet slide (2x Torx T10) Fastening screws for the front panel (3x Torx T10) 58300000111195_ARA_en_f.doc – 02.06.09 Seite 69 von 102...

  • Page 70: Remedial Actions For "Error 8" - Message

    Remedial actions for “Error 8” - message 6.5.2.2 Stripping-off clip To improve functional safety, a stripping-off clip (B) was fitted to the 6.5.1 Causes of “Error 8” message brewing unit (A). The brewing unit initialisation has failed. The brewing unit cannot be This stripping-off clip is attached to the discharge chute on the moved into the upper end position.
  • Page 71 6.5.2.3 Fin on the control lever of the brewing unit 6.5.2.4 “Cleaning process” sticker It is possible that a cleaning tablet which is dropped in too early may Information sticker to avoid damage caused by adding the cleaning stick in the area of the control lever for the brewing unit. This results in tablet at the wrong time is stuck to the inside of the right appliance a blockage of the brewing unit and in the Error 8 message.
  • Page 72 6.5.2.5 Replacement ground coffee duct 6.5.2.6 Plug insulation on gearbox microswitch To optimise filling of the brewing unit, the ground coffee duct and the During installation and maintenance there is a risk that the plug-in grinding unit funnel have been reworked. contacts of the microswitches may be bent while work is being carried out on the gearbox.

  • Page 73: Fault Diagnostics

    FAULT DIAGNOSTICS Malfunctions 7.1.1 Drawing coffee Complaint Cause? Remedial action ► ► Coffee temperature too low Cold cup or cold milk in the cup Prewarm cup or rinse out with hot water. Heat milk. ► ► (Measure coffee temperature Brewing system not prewarmed (1st coffee Prewarm brewing system;...
  • Page 74 7.1.2 Drawing coffee Complaint Cause? Remedial action ► ► Coffee has no “crema” Unsuitable coffee or beans no longer fresh Change coffee or use fresh beans ► ► (Layer of froth) Grinding unit setting not adjusted optimally to Adjust grinding unit setting. (Change degree coffee beans of grinding only while the grinding unit is running)
  • Page 75 7.1.3 Grinding unit Complaint Cause? Remedial action ► ► Coffee beans are not ground Grinding unit has not been adequately filled with Press coffee dispensing button again to start coffee another brewing process ► Empty and clean bean container. Use beans ►...
  • Page 76 7.1.4 Drawing hot water and steam / frothing Complaint Cause? Remedial action ► ► water steam Frother dirty or calcified Dismantle frother, clean carefully or descale function, too little steam ► ► Steam/hot water pipe dirty, blocked or calcified Clean or descale steam/hot water pipe ►...
  • Page 77 7.1.5 Cleaning and descaling programme Complaint Cause? Remedial action ► ► Cleaning programme does System too hot (message on display) Cool down system by drawing hot water not start ► ► Cleaning programme stops Ground coffee flap is not closed Close ground coffee duct flap and press after addition of cleaning coffee dispensing button...
  • Page 78 7.1.6 Leaks Complaint Cause? Remedial action ► ► Water tank leaking Water tank, valve and sealing ring dirty or calci- Clean and descale water tank fied ► ► Water tank defective Replace water tank ► ► Water tank coupling leaking Cracks in water tank coupling Replace water tank coupling ►...

  • Page 79: System And Error Messages

    System and error messages 7.2.1 Error messages 7.2.1.2 Error 5 7.2.1.1 Error 1 Upper symbol is lit Upper symbol is lit Lower row flashes Lower row flashes Error 5 Fault 1 NTC temperature sensor is outside the measurement Heater or thermal link is defective (interrupted). range.
  • Page 80 7.2.1.3 Error 8 Upper symbol is lit Lower row flashes Error 8 Initialisation of the brewing unit has failed. The brewing unit cannot be moved into the upper end position. This may be due to several causes, e.g.: ► Incorrect operation – the brewing unit was filled with too much preground coffee or with whole coffee beans via the ground coffee slot.
  • Page 81 7.2.2 System messages 7.2.2.1 Add water Symbol is lit ADD WATER Water tank is empty (1) The water level in the tank is monitored by a float with magnet (A) / magnetic switch and software counter (pulses from flowmeter) in the appliance. (2) When the water tank has been filled, the float rises and actuates the magnetic switch.
  • Page 82 7.2.2.2 Add beans Both symbols flash ADD BEANS No coffee beans in the bean container (a) ► Fill up bean container with fresh coffee beans and press the coffee dispensing button to start a brewing process. ADD BEANS is not displayed until a brewing process ends, as the actual filling of the brewing chamber is measured during the brewing process.
  • Page 83 7.2.2.3 Close the door 7.2.2.4 Empty trays Symbol is lit Symbol is lit CLOSE THE DOOR EMPTY TRAYS Service door not closed or brewing unit not locked Dregs drawer or drip tray are full or tray contacts are dirty ► Close service door ►...
  • Page 84 7.2.2.5 Trays missing Symbol flashes TRAYS MISSING Drip tray not or incorrectly inserted ► Insert drip tray all the way If the TRAYS MISSING display goes out even though the drip tray has not been inserted, check that the tray contacts are positioned correctly.

  • Page 85: Incoming Goods Inspection

    Incoming goods inspection 4. Fill water tank The incoming goods inspection allows machine faults to be ► Water tank leaking? localised quickly and suitable repair measures to be initiated: ► Follow the sequence in the table. 5. Coffee preparation without coffee ►...

  • Page 86: Service Diagnosis

    Service diagnosis 7.4.2 Service diagnosis kit (Mat.-no. 34 0995) 7.4.1 Hardware requirements A service diagnosis kit is required to support diagnosis of the To operate the system without errors, the following minimum appliances by PC. This kit includes the following components: requirements must be satisfied: Hardware requirements: PC 486 or higher...
  • Page 87 7.4.3 Installing the software 7.4.5 USB service diagnosis kit Insert Start disk in drive “A” The scope of delivery is changed with the introduction of the new USB Insert software CD in drive service diagnostic kit (Mat.-no. 34 0995). Menu Start, Run, disk drive SETUP.EXE The power supply unit is no longer required because the scanner is Follow installation instructions supplied via the USB connection on the PC.
  • Page 88 7.4.6 Diagnostic plug 7.4.7 Input diagnostic The diagnostic plug on the appliance will be accessible when the left Data is read out. (Production, statistical, service, customer data) appliance flap is opened and the cover (A) is removed. The The difference on the counter since the last service is deleted. transparent protective cap over the diagnostic plug must be removed The latest, current factory settings are transferred from the PC to the before the scanner is connected.
  • Page 89 7.4.8 Service fault bits 7.4.10 Definition of “minor” / “major” service Analyse internal 0 Check encoder cable 7.4.10.1 Minor service appliance fault. 1 Coffee heating sensor – short-circuit Descale appliance 2 Coffee heating sensor – interruption Service fault bit Take out and clean brewing unit 3 Steam heating sensor –...
  • Page 90 7.4.11 Individual test 7.4.14 Service stamp The following options can be selected: The service stamp is input via the following form: Upgrading factory settings 7.4.14.1 Group definition (the latest parameters are transferred from the PC to the appliance) Specific fault groups are allocated to the working points. When a Statistics working point has been selected, its fault group is activated for (Only data is read out of the appliance without any change to the...
  • Page 91 7.4.14.3 Contents 7.4.15 Service data Special software is required to analyse the data from the service Number of services 1 – 255 systems. Major fault code 001 – 999 This software is executed at each start of the service system. Fault code 1 001 –...

  • Page 92: Troubleshooting

    Troubleshooting Troubleshooting: Danger! If tests have to be conducted while the 1. Check power supply (220–240 VAC) appliance is live, ALWAYS use a residual- If there is no electrical meter available, temporarily insert and operate current-operated circuit-breaker! another electrical device on the same socket. →...
  • Page 93 Appliance does not switch on 5. Check voltage at power module output to transformer (220–240 VAC) Check voltage on plug CP2B on power module. → ► No voltage defective power module (if voltage between F1 and F2 = 220–240 VAC) →...
  • Page 94 7.5.3 Grinding unit is not functioning Fault description: 2. Check voltage on power module grinding unit output Grinding unit is not running The voltage for the grinding unit is measured on plug CP5 on terminals 3 = GND (black) and 2 = 230 VDC (transparent). The Possible faults: grinding unit must be actuated by a coffee brewing process.
  • Page 95 7.5.4 Pump is not functioning Fault description: 3. Check voltage on thermostat input Pump is not actuated / is not pumping Before the voltage can be checked on the pump itself, the thermostat must be tested for function. The pump must not be overheated! The Possible faults: voltage is measured at the thermostat input –...
  • Page 96 7.5.5 Heater is not functioning Fault description: 3. Check voltage on thermal release input Does not heat up The operating voltage of the heater (= 230VAC) is measured at the thermal release input (brown = under the insulation sleeve) and on the Possible faults: blue terminal on the heating element.
  • Page 97 7.5.6 Brewing unit is not functioning Fault description: 2. Check voltage on power module brewing unit output Brewing unit no longer moves To check the voltage at the power module brewing unit output (= 12 VDC), open the appliance. Using the Torx T10 screwdriver, unscrew Possible faults: all rear panel screws and remove the rear panel.

  • Page 98: Measuring The Coffee Temperature

    Measuring the coffee temperature Test voltage: 230 V +/- 3 V Procedure: Switch on the machine with the main switch, press the standby button. Wait until the illuminated ring around the standby button stops flashing (heating-up and rinsing phase has ended). Set filling quantity: coffee (approx.

  • Page 99: Technical Specifications

    TECHNICAL SPECIFICATIONS Rating plate Voltage The rating plate is situated on the control panel holder behind the drip tray panel. VIB (sales identification designation) Customer service index Newly launched appliances are given the customer service index “01”. The customer service index is increased to “02”, “03”, etc.

  • Page 100: Power

    Power Temperatures 8.2.1 Mains voltage Fahrenheit established 0°F as the stabilized temperature when equal amounts of ice, water, and salt are mixed. He 230 – 240 V / 50 Hz then defined 96°F as the temperature "when the 120 V / 60 Hz thermometer is held in the mouth or under the armpit of 8.2.2 Connected load...

  • Page 101: Dimensions And Weight

    Dimensions and weight 8.4.2 Cable length 8.4.1 Appliance dimensions Approx. 1.2 m Height 345 mm Width 273 mm 8.4.3 Weight of machine Depth 480 mm 7.5 kg Height between coffee outlet and drip plate 75 mm – 115 mm Filling amounts 8.5.1 Capacity Water tank...

  • Page 102: Seite 1 Von

    Components Operating voltage 5,0 V DC Display Supply voltage 11,5 V DC Logic p.c.b. (Controll unit) Operating voltage 5,0 V DC Supply voltage 16,0 V DC Speed – motor 3000 r.p.m. (no load) Drive – brewing unit Transmission ratio 451 : 1 (6,6 r.p.m.) Power 4,0 Nm (from spindle) Primarily - power supply...

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