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****** Page 1 ****** acai a Acaia Pearl Model S User Manual FW 1.0.020

****** Page 2 ****** Contents 3 3 3 4 4 4 4 4 4 5 5 5 6 7 7 7 8 8 8 9 10 11 11 12 15 15 16 16 16 17 In the Box Introduction Scale overview Getting Started Placement Power on/ off Tare weight Toggle units Switch modes Using the Acaia Brewguide Using Brewguide for the first time Using Brewguide on Pearl S Brewguide action button Product Care Information Battery charge Calibration Mode Introduction Mode 1 Weighing Mode Mode 2 €- Dual Display Mode Mode 3 Portafilter Mode Mode 4 Espresso Mode Mode 5 €- Flowrate Mode Mode 6 Flowrate Practice Mode Configuration Appendix Buttons LED indicators Error code Other Specifications

****** Page 3 ****** In the Box Introduction Thank you for choosing one of our scales. The Acaia Pearl Model S is designed and man- ufactured to the most rigorous standard to give you the best coffee brewing experience. First, check the shipping carton to find the following: Acaia Coffee Scale ca acalc la a acalc cal Heat Resistant Coaster Micro-B USB cable Next, follow the instructions in the “Getting Started” chapter in this manual to start using your scale. To take full advantage of the many features of the Pearl Model S, carefully read through this user manual for step-by-step procedures, examples, and other information. Warning: Incorrect handling of this product could result in personal injury or physical damage. Scale overview Weighing Pan Power LED Display Tare *Note: For the best performance, place the weight in the center of the weighing pan. 3

****** Page 4 ****** Getting Started Placement Select a work place that is stable, vibration-free and, if possible, a horizontal location for the weigh-ing platform Power on / off [Press] Q) to turn on the scale. [Double tap] Q) to turn off the scale. Tare weight [Short press] T to tare / zero the weight. Toggle units [Press and hold] T for five seconds to toggle units. Switch Modes Is [Press and hold] Q) for one second to switch modes. Please see the “Mode Introduction” section for more details. 4

****** Page 5 ****** Using the Acaia Brewguide Using Brewguide for the first time Brewguide is a step-by-step interactive guide to brewing coffee. Simply scan the Acaia Brewguide QR code on the coffee bean bag, and use the Acaia Brewguide app to download the recipe to your Pearl S. In the Brewguide app, you can also discover guides created by roasters around the world Download Download the Brewguide app Connect Turn on the Bluetooth on your phone and connect with the Pearl S Using Brewguide on Pearl S 1 Search or scan QR Code to find the brewguide you need. 4 Wait until the brewguide is sent to the Pearl S; this may take up to one minute. 2 Select a brewguide 5 Just follow the guide and get brewing! Start personalization Follow the instructions on the Brewguide app 3 Choose “Upload to Pearl S” in the app to send it to Pearl S. Available on the App Store GET IT ON Google Play 5

****** Page 6 ****** Brewguide action button Enter Brewguide mode Is In any scale mode, [press and hold] T for one second Go to the next brewing step Is In Brewguide mode, [press and hold] T for one second Replay the current brewing step In Brewguide mode, [press] Q) to replay Go back to the previous brewing step In Brewguide mode, [press and hold] for one second Tare In Brewguide mode, [press] T to tare 6

****** Page 7 ****** Product Care Information Battery charge • You can charge the battery by plugging the USB cable into any of the power supplies listed be-low: A computer A USB wall-charger with an output of 5 volte and 1 amp • A DC car-charger with an output of 5 volts and 1 amp e It takes about 3-4 hours to fully charge the battery from empty. Try not to let the battery completely run out before charging. Charge the battery as needed, but try not to charge the scale more than once a week. • A fully charged battery can provide up to 16 hours of working time in normal brightness and up to 40 hours in low brightness mode • Battery percentage can be viewed via the Acaia apps. * Note: Using a “fast-charging” charging block or charging hub (a charging block/hub delivering over 5v at IA) could damage your Acaia scale’s circuit board. Calibration Turn on scale Turn on the Acaia scale. Tap T button Make sure the scale is in weighing mode and the unit is set to gram’, then tap the IT’ button rapidly. See CAL display Keep tapping the i T’ button until ‘CALI is shown on the display. Place a weight Place a weight (1 ooog) on the scale and wait until the display shows End Calibration is now complete! 7

****** Page 8 ****** Mode Introduction Mode 1 – Weighing Mode In the Weighing Mode, the scale will only display weight, in either grams or ounces Q) • There are two different weighing units in Weighing Mode: grams and ounces. A green dot will appear in the upper right of the LED display and the scale will read 0.000 when weighing in ounces • The LED display shows [ 0.0 ] when the scale is measuring in grams. • The LED display shows [ 0.000 ] when the scale is measuring in ounces. • The readability is 0.1 g for grams and 0.005 oz for ounces. Mode 2 – Dual Display Mode Action Tare Weight Toggle Units g/oz Reset Mode Switch Mode Operation Tap Tare button Long press Tare for 5 seconds Double tap Tare button Long press Power button In the Dual Display Mode, the scale displays [ 0:00 0.0 ] with a timer (left) and weight (right). • There are two different weighing units in Dual Display Mode: grams and ounces. • When the scale is measuring in grams, the LED display shows [ 0:00 0.0 | • When the scale is measuring in ounces, the LED display shows [ 0:00 0.00 ] • The maximum display time is 9 minutes and 59 seconds The weight display on the right side displays 0.0 to 999.9 when the value is under 1000, and 1000 to 3030 if the value is over 999.9 Action Start/Stop/Reset Timer Tare Weight Reset Mode Toggle Units g/oz Switch Mode Operation Tap Power button Tap Tare button Double tap Tare button Press and hold Tare for 5 seconds Press and hold Power button 8

****** Page 9 ****** Mode 3 – Portafilter Mode (b The Portafilter Mode is designed to simplify the workflow of weighing coffee grounds in a portafilter. The scale automatically detects a portafilter or other vessel and tares the weight of the vessel. Remove the portafilter to add coffee grounds, and place on the scale again to measure the weight of the coffee grounds. Repeat as needed to adjust the weight. After the portafilter has been removed for 15 seconds, the scale will reset the mode to default for next workflow. Action Tare Weight Reset Mode Toggle Units g/oz Switch Mode Display Operation Tap Tare button Double tap Tare Long press Tare for 5 seconds Press and hold Power button 1. While measuring in grams, the display shows [ 0.0. ] before a portafilter is placed on the scale. 2 While measuring in ounces, the display shows [ 0.000. ] before a portafilter is placed on the scale 3. The display shows [ 0.0 ] after a protafilter has been registered Mode Description 1 . Place an empty portafilter on the scale, and the scale will register the weight of the portafilter. 2. Remove the portafilter after [ • ] disappears. Note If you do not operate the scale for 15 seconds or double tap the tare button, the Pearl Model S will automatically reset the mode to default for next auto tare operation. 9

****** Page 10 ****** Mode 4 – Espresso Mode The Espresso Mode is designed to aid espresso extraction. The scale automatically detects a cup, shot glass, or other vessel and tares the weight of the vessel. The scale will then detect the start of the flow of espresso into the vessel and automatically start the timer function, the timer stops when the flow of espresso into the vessel stops. When the vessel is removed from the scale, the display flashes the final beverage weight. Display 1 . The LED display shows [0:00 0.0] with the timer on the left and the weight on the right in gram units. 2. The LED display shows [0:00 0.00] with the timer on the left and the weight on the right in ounce unite. 3 When the weight exceeds 999 grams, the LED display only shows the integer part (the decimal point will not be displayed. The LED display shows up to a maximum of 3000 grams. If the weight exceeds 3000 grams, the scale will display [Maximum]. Mode Description 1 . When placing more than two grams and a stable weight on the scale, the scale will perform the auto-tare operation. 2. After the scale detects the flow of espresso, the timer will start. The timer will stop when the espresso flow stops. 3. When the espresso is ready, removing the cup will flash between the beverage weight and the espresso shot. Action Start/Stop/Reset Timer Tare Weight Reset Mode Toggle Units g/oz Switch Mode Note Operation Tap Power button Tap Tare button Double tap Tare Long press Tare for 5 seconds Press and hold Power button 1 . In Espresso Mode, the timer will stop when the espresso flow stops. 2. The auto-tare function is performed only when the weight exceeds two grams. 3. If you do not operate the scale for ten seconds, it will reset the timer and perform tare operation. 4. In Espresso Mode, the timer will also stop when a negative weight (i.e., removal of a cup) is detected. 10

****** Page 11 ****** Mode 5 – d) Time Flowrate Mode Designed for pour over coffee brewing. The display includes timer, flowrate, and weight. Weight Flowrate 1. When the scale is measuring in grams, the LED display shows [ 0:00 0.0 0.0 2. When the scale is measuring in ounces, the LED display shows [0:00 0.00 0.00]. 3. The maximum display time is 9 minutes and 59 seconds. The weight display in the middle displays 0.0 to 999.9 when the value is under 1000, and 1000 to 3030 if the value is over 999.9 4. The flowrate unit is measured in grams per second (g/s) on the right hand side of the display. Action Start/Stop/Reset Timer Tare Weight Reset Mode Toggle Units g/oz Switch Mode Operation Tap Power button Tap Tare button Double tap Tare Long press Tare for 5 seconds Long press Power Mode 6 Flowrate Practice Mode A real-time flowrate meter mode designed for practicing your infusion stability. The current flowrate is displayed on the left, and the stability of pouring is shown on the chart. • The flowrate is measured in g/s and oz/s. • In the chart, starting from the left each dot indicates 0.5 g/s, and the indicator bar provides a visualization of flowrate stability. Action Toggle Units gloz Switch Mode Operation Long press Tare button for 5 seconds Long press Power 11

****** Page 12 ****** Chapter 5: Configuration Enter settings 1. Press and hold Power button while the LED display shows [ acaia ] and then changes to [ Settings ]. 2 Tap T button to enter Settings. The first setting is [ Brightness 3. Please refer to the following table for the key operations on, Off on, Off on, Off on, Off on, Off on, Off on, Off on, Off ID, 2D, Off Action Next Setting Previous Setting Enter Setting Toggle Options Save Option Back to Menu without Saving Exit Settings and Return to Modes Operation Tap Tare button Tap Power button Press and hold Tare button Tap Tare button Press and hold Tare button Tap Power button Double tap Power Settings Menu Setting Brightness Key Sound Default Weighing Unit Weighing Mode Dual Display Mode Portafilter Mode Espresso Mode Flowrate Mode Flowrate Practice Mode Hello Message Setting Bluetooth Setting Sleep Timer Setting Battery Saving Weighing Filter Zero Tracking Weighing Resolution Timer Auto Reset Reset Default Display Brightness Beep Unit Weighing Mode Dual Display Mode Portafilter Mode Espresso Mode Flowrate Mode Flowrate Practice Mode Hello Message Bluetooth Setting Sleep Timer Battery Saving Fi Iter Zero Tracking Resolution Timer Auto Reset Reset Default Options Low, Medium, on, Off Gram, Ounce High, Bright 5 Min, 10 Min, 20 Min, go Min, 60 Min, Off 90 sect 180 sec, Off Normal, High, Sensitive Default, 10 Sect No, Yes High go sect 60 sec, Off Default Medium On Gram On On Off Off Off Off Off On 5 90 sec Normal Default 10 sec No 12

****** Page 13 ****** Brightness 1. You can adjust the brightness of the LED display. 2. Default brightness is set to Medium. Set to Bright when operating under strong light. Key sound setting 1. Use this setting to turn the beeping sound on or off Default weighing unit 1 The default weighing unit is set to be gram if [ Gram ] is selected and ounce if [ Ounce ] is selected. 2. Tap Tare Button to switch the default weighing unit between gram and ounce. Weighing Mode setting 1 . By default, the Weighing Mode setting is set to ON, which means this mode is enabled. • ON: The Weighing Mode is enabled • OFF: The Weighing Mode is disabled Dual Display Mode setting 1 By default, the Dual Display Mode setting is set to ON, which means this mode is enabled. • ON: The Dual Display Mode is enabled. • OFF: The Dual Display Mode is disabled Portafilter Mode setting 1 By default, the Portafilter Mode setting is set to OFF, which means this mode is disabled • ON: The Portafilter Mode is enabled • OFF: The Portafilter Mode is disabled Espresso Mode setting 1 By default, the Espresso Mode setting is set to OFF, which means this mode is disabled. • ON’ The Espresso Mode is enabled. • OFF: The Espresso Mode is disabled Flowrate Mode setting 1 By default, the Flowrate Mode setting is set to OFF, which means this mode is disabled • ON: The Flowrate Mode is enabled • OFF: The Flowrate Mode is disabled Flowrate Practice Mode setting 1 . By default, the Flowrate Practice Mode setting is set to OFF, which means this mode is disabled • ON: The Flowrate Practice Mode is enabled. • OFF: The Flowrate Practice Mode is disabled. Hello message 1 By default, the Hello Message setting is set to OFF, which means the Hello Message will not show when the scale are turned on • ON’ The Hello Message will show when the scale is turned on. • OFF: The Hello Message will not show when the scale is turned on. 13

****** Page 14 ****** Bluetooth setting 1. By default, the Bluetooth Setting is set to ONI which means the Bluetooth is enabled • ON: The Bluetooth is enabled. The scale allows Bluetooth connection. The user may connect the scale with Acaia apps. • OFF: The Bluetooth is disabled. The scale does not allow any Bluetooth connection. Sleep timer setting 1 The number displayed indicates the amount of time before the scale will automatically power off. For example, when 10 is selected and the scale is disconnected from all mobile devices, the scale will power off after 10 minutes of idling. Battery saving 1 The default Power Saving Mode is set to 90 seconds. 2. The Acaia Pearl Model S will wait for the selected number of seconds to enter Power Saving Mode. The LED display will dim to save power. Weighing Filter setting 1 The Weight Filter Setting determines the speed for load receptor to response to weight and to determine the weighing value. The higher level, the more stable but slower the weighing result will be. Zero tracking 1 Zero tracking is a function to help compensate the weight readout fluctuations at zero point to improve the usability of the scale. Acaia Pearl S is allowed to compensate the fluctuation by up to 2 d according to industrial weighing guidelines. 2 OFF: It is not recommended to turn off zero tracking as the zero indication would drift easily as the room temperature changes. 3 0.5 d For example, since each division is 0.1 g, 3 d = 0.3 g. When zero tracking is set to be 3 d, any initial weight between +/- 0.3 g on the weighing pan would be zeroed out. 4. 1 d is recommended in general for Acaia coffee scale Weighing resolution 1 The default weighing resolution is set to [ Default ], the division is 0 1 g for weights under 1000 grams and 0.5 g for weights between 1000 and 2000 grams. 2. When the weighing resolution is set to [ High the division will be 0.1 g throughout the entire time from O to 2000 grams. Timer auto reset 1 . When the timer is paused, the scale will automatically reset the timer to zero after a defined length of time. 2 The default value for this setting is ten seconds. Reset default To reset the scale to its factory default settings, go to [ Reset Default then choose [ Yes ]. The scale will clear Hello Message and reset all settings including Brewguide data to factory default. 14

****** Page 15 ****** Appendix Buttons Power Button d.) Tare Button Function Turn on Turn off Switch Mode Start/Stop/Reset Timer Back Tare Toggle units Switch option Reset Confirm Enter Brewguide Mode Enter Calibration Mode Example Press and hold for 0.5 seconds to turn on the scale. Double-tap the power button to turn off the scale. While the scale is turned on, press and hold for one second to switch modes Tap to start/stop/reset timer. While in Settings Menu, double tap to go back to Modes. Tap to perform tare operation. Long press for five seconds to change weighing unit between gram and ounce. While in Settings, tap to advance through settings options. While in settings, tap to toggle options in sub menus. Double tap to reset a mode. This zeros the weight and sets the timer to 0:00 While in Settings, press and hold for two seconds to confirm the option selected in a sub menu. Press and hold for one second to enter Brewguide Mode. While in Weighing Mode, rapidly tap T button to enter Calibration Mode. 15

****** Page 16 ****** LED Indicators Battery Charge Tare Operation Battery charge / Charge error Ounce Indicator Espresso Mode Indicator The orange indicator on the upper left turns on when the battery is charging and turns off when the battery is fully charged. The indicator starts flashing or does not appear when the USB cable is not working Tare operation The orange indicator on the lower left turns on when the Tare button is pressed. Ounce Indicator The green indicator on the upper right turns on when the weighing unit is in ounces. Espresso Mode indicator The green indicator on the lower right turns on when in Espresso Mode. Error Code Error Code Error 100 Error 101 Error 102 Error 303 maximum underload Error 304 Error 802 Error 803 Others Description Access Code Error, unrecognized access code. EEPROM error, unable to access memory. Please contact Acaia support. AD error, unable to access weighing signal. Please contact Acaia support. Unable to find acceptable starting Zero point, most likely due to the loadcell has been damaged by excessive force or drop. Please contacat Acaia support. Over load the weight is over the maximum capacity. Under load: the weight is under the minimum capacity. Calibration error. Calibration cannot proceed when environmental noises are too strong. Please calibrate in a stable environment free of wind, vibration, etc. Unable to tare because the weight exceeds the acceptable tare range. Unable to tare because the weight is unstable Display Code Description UPDATE The scale is in update mode. During the update process, the orange LED Will blink until it is completed. Note: If you want to leave update mode, please connect the scale’s USB to a power source. 16

****** Page 17 ****** Specifications Approx. Weight Capacity Measuring Units Weighing Range 1 Weighing Range 2 Weighing Limit Unit Dimensions Electrical Requirements Power and Battery Display Bottom Connectivity Linearity Work Time Operating Temperature 606 g 3000 g / 105.81 oz g, oz Maximum capacity Minimum capacity Division Maximum capacity Minimum capacity Division 3090 g / 108.984 oz (L x w x H) 160 x 160 x 32 mm 5V / 500 mA Lithium-ion rechargeable 3.7 V 2200 mA LED dot matrix display, touch sensitive Anti-slip Rubber Bluetooth 4 0 + /- 0.2 g Up to 16 hours in normal brightnessl mode, and 40 hours in Low brightness mode 150C 1500.0 g 0.1 g 01 g 3000.0 g 1500.0 g 05 g 52.905 oz 0.0035 oz 0.0035 oz 105.81 oz 52.905 oz 0.017 oz

****** Page 18 ****** Copyright This user manual is protected by copyright. All rights reserved. No part of this manual may be reproduced, processed, duplicated or published in any form by photocopying, microfilming, reprinting or any other method, in particular electronic means, without the written consent of Acaia. @ Acaia, California, 2019.


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