107 | Nespresso EF487/488, EF485/486, EF483/484 specification

R E P A I R S

8.7.7 Replacing electronic control board with button prints

The replacement board is equipped with protective hous

ing and cover.

•Remove at first

NTC connector from electronic control board,

connector cable from flow meter,

electronic lid (43),

faston receptacles from electronic control board.

•Insert tip of screwdriver between chassis (1) and protective case of electronic control board (42) to release latches. Then pull out assembly.

Citiz service manual

107

Image 107

Nespresso EF487/488, EF485/486, EF483/484 manual Replacing electronic control board with button prints, 107

Contents

Service MA NUA L Citiz Coffee MA Chines Contents Repairs 130 Version Content Upda TESPrefa CE To contact with both cir cuit conductors Genera L SA Fety Notes With core unit Drange With core unit Crange Model OverviewModel range Different components range Core unit versionsrangeCrange Overview core unit, Drange MA in Components Interior view core unit, Drange Overview core unit, Crange Interior view core unit, Crange Overview model Citiz Overview model Citiz & milk Overview milk frother AERO3 Overview model Citiz & Co Fluid System Water circuit diagram of core unit all Citiz versions Water circuit of models Citiz/Citiz & milk Water circuit of model Citiz & Co Nespresso, EUversion Technica L DA TARating plates Examples of brand specific rating plates Koenig, CHversion DeLonghi, EUversion Magimix, EUversion Krups, EUversion Turmix, ATversion Rating plate details Example Rating plate of milk frother model Citiz & milkDecoding the alphanumeric serial number Technical data of coffee machines Summary of technical data Various data TemperaturesPump Capacities Technical data of milk frother model Citiz & milk Performance data Dimensions and weight model CitizTemperature Dimensions and weight milk frother Dimensions and weight model Citiz & milk Dimensions and weight model Citiz & Co Status indication of coffee machine Opera TionGeneral information Status indication Button Status indication of milk frother AERO3 Machine status etc Operating button Light signal Machine modes of Citiz coffee machines Enter mode Actions Exit modeMachine modes Machine modes of milk frother AERO3 Machine modeMachine mode Enter mode Actions Exit mode Programming the fill up level Program/reset fill up levelResetting the fill up level Empty water system Before first coffee or at the start of day Daily maintenance and cleaningMA Intena NCE After last coffee or at the end of day Milk frother of model Citiz & milk Descaling Descaling procedure for models Citiz and Citiz & milk Observe the safety instructions on the descaler package I N T E N a N C E Rinse thoroughly to remove any residue Descaling procedure for model Citiz & Co Do not open handles dur ing descaling process I N T E N a N C E I N T E N a N C E Check list for coffee machine all models Check Error symptomsTroub L Eshooting Work Check Error symptoms Measure Further measures / repair Work Error symptoms Measure Repair workCheck list for milk frother Check Repair and mounting tips Safety instructionsRepa IRS Bottom of platform Residual water Wiring arrangementDesignation of spare parts Electrostatic discharge protection Tools and accessories General disassembly Platform disassembly model Citiz Bottom cover Assembly checkpoints Replacing water tank connector Replacing mains switch Assembly checkpoints Replacing power cord Wiring with twocore power cord Wiring with threecore power cord Removing core unit Use apair of flat pliers Assembly checkpoints Platform disassembly model Citiz & milk P a I R S P a I R S Assembly checkpoints Replacing water tank connector Assembly checkpoints Replacing milk frother connector Receptacles Replacing power cord Assembly checkpoints Removing core unit Tacle Assembly checkpoints Platform disassembly model Citiz & Co Core units are If necessary use a screwdriver to remove protective cover Assembly checkpoints Replacing water tank connector Replacing mains switch Assembly checkpoints Replacing power cord Assembly checkpoints Removing core units Assembly checkpoints Remove left side panel Disassembly of core unit, Crange P a I R S Remove blind Remove right side panel Remove front cover with outlet Remove cover Assembly checkpoints Replacing compact brewing unit Assembly checkpoints General Replacing pump Replacing pump assembly Seat for the fork wrench 101 Assembly checkpointReplacing flow meter Replacing automatic priming device APD 103 Replacing thermoblock with NTC sensor and fine wire fuses 105 Replacing NTC temperature sensorAssembly checkpoint NTC temperature sensor Replacing fine wire fuses Assembly checkpoints thermoblock Assembly checkpoints fine wire fuses 107 Replacing electronic control board with button prints P a I R S 109 Disassembly of core unit, DrangeRemove outlet Remove right side panel 111 Swing up and remove right side panel 113 Closing handle should be opened 115 Refer to page 114 for removing cover 117 Wiring diagram 220 V 240 V IEC model Citiz, EF 483/484 Wiring diagramsWiring diagrams model Citiz 119 Wiring diagram 120 V UL USA/Canada model Citiz, EF 483/484 P a I R S 121 Wiring diagram 110 V IEC Taiwan model Citiz, EF 483/484 123 Wiring diagram 100 V IEC Japan model Citiz, EF 483/484 Wiring diagrams model Citiz & milk, EF 485/486 125 P a I R S 127 Wiring diagrams model Citiz & Co, EF 487/488 129 Overview Function TestsRequired equipment 131 Citiz pressure gauge adapter Measure flow rate 133 Pressure and leakage checks Preparations 135 Test run Measure coffee temperature 137 Coffee temperature should be 86 C ± 3 C 187 F ± 5.4 F Prerequisite Measure hot milk temperatureMilk frother tests Measure milk froth ratio 139 NTC temperature sensor functionality Measurement table NTC DiagramNTC temperature NTC min. resistance NTC max. resistance 141 Protective earth PE continuity testWhat coffee machine has to be tested and when? General Resistance must be lower than Ohm Test sequence Additional test for coffee machine Citiz & milk What to do if the protective earth continuity test fails143 What coffee machines have to be tested and when? Protective insulation test 145 Additional tests for coffee machine Citiz & milk 147 What to do if the insulation test fails 10.1Model Citiz, core unit Drange EF Expl Osion DRA Wings 149 Model Citiz, core unit Crange EF Model Citiz & milk, core unit Drange EF 151 Model Citiz & milk, core unit Crange EF Model Citiz & Co, core unit Drange EF 153 Model Citiz & Co, core unit Crange EF Remark PA RTS L ISTPos.Component Pos Component 155 Connection cable UL 157 T E S