Schaerer Barista Detailed Information
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Schaerer Barista Detailed Information

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Schaerer Barista
Further detailed information
KSS Technical Support
State 10/2018
Rev.03 / SW version 1.10.

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Summary of Contents for Schaerer Barista

  • Page 1 Schaerer Barista Further detailed information KSS Technical Support State 10/2018 Rev.03 / SW version 1.10.

  • Page 2: Preface

    Preface Preface The Service Manual document contains the most important information that is relevant to typical service and maintenance activities. If significant changes are made, then this document, along with the referenced attachments and related documents, will be updated and provided to registered users for download in the service center.

  • Page 3: Change History

    Change history Change history • Rev. 01 1st edition for series launch • Rev. 02 January 2016 edition • Rev. 03 Edition October 2018...

  • Page 4: Important Safety And Hazard Warnings

    Introduction / Basics Important safety and hazard warnings General safety instructions CAUTION. The hazard warnings listed here must be familiar and must be followed before opening, repairing, or maintaining the coffee machine. Risk of Electrical Shock – Components carrying mains voltage The coffee machine is not fully disconnected from the mains if only switched off! Prior to any associated work, be sure to disconnect mains cable.
  • Page 5 Introduction / Basics Burn hazard CAUTION. Any parts that come into contact with media present a burn hazard. Scalding hazard CAUTION. There is a scalding hazard at spouts and at disconnected or faulty connections due to egress of medium. Handling of cleaning and descaling agents CAUTION.
  • Page 6 Introduction / Basics What the symbols mean CAUTION. CAUTION. CAUTION. Hazard to the machine. Hot liquid. Hazard to the user. CAUTION. CAUTION. CAUTION. Bruising or Hot surface. Hot steam. crushing hazard.

  • Page 7: Table Of Contents

    Table of Contents Table of Contents Preface ........................................... 2 Change history ........................................3 Important safety and hazard warnings ................................4 Table of Contents ........................................7 Introduction / Basics ....................................9 Machine concept ......................................9 Standard machines ....................................10 Versions and options ....................................10 Technical features .....................................
  • Page 8 Table of Contents 2.1.4 Milk and milk foam - Auto Steam ................................24 Functional procedures steam boiler and flow heater ..........................26 Regulating and safety elements of the steam boiler and flow heater ......................29 2.3.1 Principle representation of safety chain ..............................30 2.3.2 Auto/Powersteam lock ....................................

  • Page 9: Introduction / Basics

    Machine concept The Schaerer Barista opens up a revolutionary new machine concept the likes of which has never been seen before. This machine concept combines the benefits of a fully automatic coffee machine with the high coffee quality and coffee culture of a semi-automatic coffee machine, largely eliminating the disadvantages of the machine types mentioned above.

  • Page 10: Standard Machines

    Introduction / Basics Standard machines • 3/N/PE 380 V – 415 V / 6 kW – 7 kW • 2 brewing groups with grinders above them (up to two types of coffee are possible) • Bean hopper is removable & is dishwasher-safe •...

  • Page 11: Technical Features

    Heated cup storage with soft insert • • Adjustable touch surface design / functions Automatic detection of portafilter sizes • Barista botton Brewing piston tamped from above • SteamJet Actively aerated grinder motors and bean hoppers • Display the name of the bean type or beverage button name Freely accessible grinding wheel adjustment •...

  • Page 12: Detailed Information About The Selected Features

    Introduction / Basics Detailed information about the selected features 1.5.1 Portafilter Description - structure • There are 3 different sizes of portafilter. The only difference between the portafilters is their size, as a result the cup volume for ground coffee chute varies; the principle structure of the portafilter is the same.

  • Page 13: Portafilter Detection

    Introduction / Basics 1.5.2 Portafilter detection Function description • The brewing groups (portafilter supports) contain automatic portafilter detection. • If a portafilter is inserted, the control will detect the portafilter size and automatically assigns the appropriate recipe to beverage buttons. The size of the portafilter is automatically detected using magnets which are worked into the bayonet of the portafilter and the reed contacts in Portafilter supports are installed.

  • Page 14: Brewer

    Introduction / Basics 1.5.3 Brewer Description - structure • A vertically arranged piston brewer is installed without an ejection mechanism for each brewing group. • The brewing piston/distributor sieve is connected with the brewer spindle via a bayonet connector and is protected from being pulled out with a pis- ton lock.

  • Page 15: Brewing Temperature Can Be Adjusted For Specific Beverages

    Introduction / Basics 1.5.4 Brewing temperature can be adjusted for specific beverages Description of basic functions • The brewing temperature can be set using the software specifically to the recipe. • A proportional valve mixes cold water with hot brewing water coming from the flow heater, in a controlled fashion. Brewing temperature regulating functions •...

  • Page 16: Heated Cup Storage With Soft Insert

    Introduction / Basics 1.5.5 Heated cup storage with soft insert The top cover, with integrated cup storage is fitted with a soft insert and surrounding railing which prevents the cups from tilting after the bean hopper is filled due to the closing of the cup holder. The cup storage is mounted on the machine holder with heater.

  • Page 17: Steam Boiler Pressure Sensor

    Introduction / Basics 1.5.6 Steam boiler pressure sensor Pressure sensor SW LW Description of basic functions • The pressure sensor detects the operating pressure of the boiler, and there- fore also indirectly the temperature setting -> 1.5 bar (equivalent to 127 °C) ...

  • Page 18: Visualization Of Event, Error And Maintenance Messages

    Introduction / Basics 1.5.7 Visualization of event, error and maintenance messages Unlike other new generation machines, the Schaerer Barista does not have an event or error visualizationevent-, error and maintenance messages are solely transmitted by means of display messages/display animations.

  • Page 19: Main Dimensions And Technical Data

    Introduction / Basics Main dimensions and technical data You can take a closer look at the planning information by downloading it from www.schaerer.com.
  • Page 20 *** Depth with inserted portafilter and cup storage taken out **** A-evaluated sound pressure level Lpa (slow) and Lpa (impulses) at operating personnel workplace is under 70 dB(A) in any working mode. When the carbonate hardness is above 5 °dKH, a SCHAERER water filter should be installed.

  • Page 21: Functional Procedures

    Functional procedures Functional procedures Functional procedures – when preparing beverages, beverage ingredients Beverages/beverage additions can be classified by function based on their dispensing point. Removal from the flow heaters Dispensed from steam boiler (SB) Coffee pressure brewing 2.1.2 Hot water 2.1.3 Milk and milk foam - Auto Steam 2.1.4...

  • Page 22: Overview Of Possible Parallel Functional Procedures

    Functional procedures 2.1.1 Overview of possible parallel functional procedures Flow Flow Steam Steam Steam heater heater boiler boiler boiler left right Coffee Coffee Auto Basic BG left BG right water Steam Steam Flow Coffee heater BG left left Flow Coffee heater BG right right...

  • Page 23: Coffee Pressure Brewing

    Functional procedures 2.1.2 Coffee pressure brewing • Empty portafilter is inserted in the brewing group  Safety switch is activated and reed switch has detected the size of the inserted portafilter • Coffee beverage at the touch of a button •...

  • Page 24: Hot Water

    Functional procedures 2.1.3 Hot water • Hot water button touch • Proportion valve hot water, hot and proportion valve hot water, cold open  Hot water is withdrawn from the steam boiler  Cold water is mixed – the required cold water volume can be adjusted fix via the needle valve on the pressure reducer. If the "Low pressure"...
  • Page 25 Functional procedures 2.1.4.2 Hot milk foam The Auto Steamer dispensing can be started in two ways. • By default, the milk foam Auto Steam button is assigned a recipe (a milk foam quality). If the button is pressed, the milk foaming process will begin immediately. •...

  • Page 26: Functional Procedures Steam Boiler And Flow Heater

    Functional procedures Functional procedures steam boiler and flow heater Closed steam boiler, 3.7 liter capacity. Pressure sensor The two flow heater and heaters are part of an integrated unit SW LW and cannot be replaced separately. Components and functional procedures in the Cold water feed Steam boiler / flow heater •...
  • Page 27 Functional procedures • SW electrode (service water): Flow heater 1 Evaluates the water fill level. connections Steam outlet Flow heater 2 Pressure sensor Limits the max. water fill level and min. steam volume. If the level un- connections dershoots the SW fill level in normal mode (beverage preparation) SW LW this triggers a refilling of the steam boiler via the steam boiler feed Safety valve...
  • Page 28 Functional procedures Steam outlet Further functional sequences Flow heater 1 Flow heater 2 Pressure sensor connections connections After a cold water is fed into the steam boiler, the ventilation routine begins via SW LW the steam boiler ventilation valve - this allows the machine to detect the actual pressure prevailing in the steam boiler.

  • Page 29: Regulating And Safety Elements Of The Steam Boiler And Flow Heater

    Functional procedures Regulating and safety elements of the steam boiler and flow heater The steam boiler is heated in the following operating cases: • LW electrode contacted • The pressure sensor detects pressure that is too low (too low temperature) > reports the pressure to the controller > the controller applies a voltage to the heater SSR >...

  • Page 30: Principle Representation Of Safety Chain

    Functional procedures 2.3.1 Principle representation of safety chain 1. Safety valve 2 bar (SV) Trips at 2+0.5 bar  Hot steam is discharged  Pressure is released and sent to TB2 via a hose  Heating continues 2. Steam path temperature limiter (TB2) Due to the escaping hot steam, the TB2 temperature limiter triggers within a few seconds ...
  • Page 31 Functional procedures Additional safety element in the flow heaters To protect excess pressure in the flow heaters, which can arise in an enclosed space when heating fluids, the brewing valves are installed opposite the actual flow direction. If the pressure exceeds 12 bar, the brewing valve of the concerned brewing group opens mechanically and the expansion water is fed into the outlet via the release valve which is opened during heating or via the brewing group.

  • Page 32: Auto/Powersteam Lock

    Functional procedures 2.3.2 Auto/Powersteam lock The Schaerer Barista has two different steam variants: • • Auto Steam Powersteam   Attached to the left-hand side of the machine Attached to the right-hand side of the machine   Triggered via buttons Triggered via manual steam wheel ...

  • Page 33: Maintenance - Further Detailed Information

    Maintenance – further detailed information Maintenance – further detailed information Maintenance concept – Display and setting options Service > Service dates Example: ser- vice maintenance 1 "Confirm service date" sets the indicated service and clears the error memory (for details see next page) Scrolls to/through the maintenance overviews (for details see next page) Scrolls back to the service menu...
  • Page 34 Maintenance – further detailed information • “Manufacturer maintenance concept" shows the maintenance concept (Factory default) – by time and/or periodical • "Set maintenance concept" shows the set maintenance concept – by time and/or periodical  Touching the displayed valve opens the window for changing the settings –...

  • Page 35: User Training

    The following points should be covered by the user/customer training for the coffee machine: Assign beverage buttons Schaerer Barista User manual Schaerer Barista - Basic beverage settings Schaerer Barista Software description part 1 Schaerer Barista Service manual Setting, adjusting and testing beverages...

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