Nespresso EF 474 user manual

User manual for the device Nespresso EF 474

Device: Nespresso EF 474
Category: Coffeemaker
Manufacturer: Nespresso
Size: 12.86 MB
Added : 8/10/2014
Number of pages: 38
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Abstracts of contents
Summary of the content on the page No. 1

en Service Manual Coffee Machine
EF 473
EF 474
Essenza FS

Summary of the content on the page No. 2

Contents Electronic control board, wiring diagram - Preface _____________________________ 3 USA (UL, 120 V / 60 Hz) _____________ 24 Main Components__________________ 4 Electronic control board, wiring diagram - Japan (100 V / 50-60 Hz)_____________ 25 Overview ___________________________ 4 Descaling (1) _______________________ 26 Overview of rating plates ______________ 5 Descaling (2) _______________________ 27 Water circuit _________________________ 6 Measuring flow rate _________________ 2

Summary of the content on the page No. 3

Preface The purpose of this Service Manual is to provide the service personnel with all necessary information with regards to correct handling, maintenance and repair of the coffee machines EF 473 and EF 474. This manual should be used by the technicians as a valuable aid to guarantee the permanent readiness for use of the machine. In order to take full advantage of all the functions, it is absolutely necessary to follow the instructions in this manual. Please keep this manual together

Summary of the content on the page No. 4

Main Components Overview 1) Closing handle 1 2) Cover 3) Compact brewing unit (CBU) 4) Capsule inlet 5 4 3 2 5) Side panel 6) Flow meter 7) Button "small cup", back lighted 6 8) Coffee outlet 7 9) Button "large cup", back lighted 10) Container for used capsules 11) Drip grid 20 12) Drip tray 13) Lower chassis 8 14) Thermoblock TB 2003 9 15) Electronic control board 10 16) Pump CP4-SP C2 11 17) Water tank connector 18) On/Off switch 19) Upper chassis 20) Water tank 12 19 13 18 14 16 15 17 Service

Summary of the content on the page No. 5

Main Components Overview of rating plates The rating plate NESPRESSO Type C100 MAGIMIX M100 AUTO - can be found at the underside of the coffee ref 11244 machine, 220-240V 1260W50Hz 220-240V~ 1260W50Hz - may be of varying design, depending on Made in Switzerland Fabriqué en Suisse the brand, - carries the following information: MADE IN SWITZERLAND 0527 8064 7405 2100 017 0527 8074 7305 9100 015 • Machine type • Voltage and power rating • Approval seal(s) Capri Automatic 03165 Typ: KOENIG Turmix

Summary of the content on the page No. 6

Main Components Water circuit 1) Water tank 2) Water tank valve and connector 3) Flow meter 4) Pump 5) Thermoblock 6) Compact brewing unit (CBU) 6 7) Coffee outlet 7 1 3 2 5 4 Service Manual EF 473 / EF 474 Version 1.0 en 6

Summary of the content on the page No. 7

166 mm 166 mm Main Components Mains Power consumption Technical data EUR 230V / 50 Hz (at all voltages and frequencies) USA /CAN 120 V / 60 HzThermoblock 1’200 W EF 473 JAP 100 V / 50-60 HzPump 60 W Approvals SEV, CENELEC, CE-conform, UL, CUL, MITI Ratings 255 mm Preheating 8.0 Wh Cable length ~1,5 m 1 small cup (40 ml*) 4.5 Wh 1 large cup (110 ml*) 9.5 Wh Stand-by mode (in 1 h) 11 Wh Pump data * factory setting Pump pressure - max. permissible 17,5 bar ±1,5 bar Various data - during coffee

Summary of the content on the page No. 8

Operation Preparation 5 1 1. Fill tank with water. 2. Insert water tank in coffee machine. 3. Switch on machine with On/Off switch. 4. Position receptacle with a capacity of min.100 ml under coffee outlet. 4 Do not insert a capsule yet. 5. Wait until machine is ready (both buttons 3 2 are lighted). 6. Press button "small cup" or "large cup" to rinse coffee outlet. 7. Press the same button again in case the receptacle is filled. 6 7 Service Manual EF 473 / EF 474 Version 1.0 en 8

Summary of the content on the page No. 9

Operation Fill water system 5 4 2 If the coffee machine cannot pump water although there is water in the tank, the water circuit may be empty. Procedure to fill water system: 1. Perform steps 1 to 5 for preparation (see page 8). 2. Open closing handle in vertical position. 3 3. Press button "large cup". 4. Press and hold closing handle to rear end position. 5. Observe capsule inlet for appearing water. 6. Press down closing handle immediately when first droplets are visible. 6 7. Press but

Summary of the content on the page No. 10

Operation Making coffee 1 3 1. Open closing handle. 2. Insert capsule. 2 3. Press down closing handle completely. 4. Position cup under coffee outlet. 5. Press button "small cup" or "large cup". Coffee flow starts and stops automaticly. 6. In case the cup is going to flow over, press 5 the same button again. 4 7. Briefly open closing handle after coffee preparation and eject capsule into capsule container. 7 6 Service Manual EF 473 / EF 474 Version 1.0 en 10

Summary of the content on the page No. 11

Operation Programming 2 4 The filling amount for coffee is preset and can be changed with the following procedure. 3 Factory settings: 3 sec Button "small cup" ........................40ml 6 Button "large cup".......................110ml 1. Switch on machine. 2. Open closing handle. 5 3. Insert capsule. 4. Press down closing handle completely. 1 5. Position a cup under coffee outlet. 6. Press and hold button "small cup" for at least 3 seconds to start the programming mode. 7. Release button

Summary of the content on the page No. 12

Operation Reset to factory settings 1. Switch off machine. 2. Press and hold button "large cup". 3. Switch on machine. 4. Release button. 2 1 4 3 Service Manual EF 473 / EF 474 Version 1.0 en 12

Summary of the content on the page No. 13

Operation Empty water system 5 After operation, residual water remains in the water circuit. 3 2 This residual water can be removed - before a longer period of non-use, - for frost protection, 4 - before repair and following shipping. 1. Switch off machine. 4 2. Empty or remove water tank. 3. Press and hold button "small cup". 4. Then switch on machine and release 1 button. The pump begins to empty the water system and stops automatically after 7 approximately 5 seconds. 5. Simultaneou

Summary of the content on the page No. 14

Operation Coffee machine status Coffee buttons Operating modes LED signals left right After switching on, an automatic self-test is performed to check if Off off - the NTC is connected, - the NTC is short circuited, Heat up (coffee) / self-test blinking slow - the thermoblock reaches the standby temperature within 2 minutes. Ready on Operating modes and detected failures are Heat up (descaling) blinking fast indicated by backlighted coffee buttons as listed in the following table. Small cof

Summary of the content on the page No. 15

Troubleshooting Checking the machine on receipt Follow the check procedure. The receipt check enables you to rapidly Repair any faults found and check if the locate faults on the machine and to initiate machine is operating perfectly. appropriate repair action. Check procedure Symptoms Action / repair work Further action / repair work YES - Replace parts if necessary 1.1 Parts of housing broken or damaged NO - Go to point 1.2 1 Check appliance for visible damage YES - Replace mains cable

Summary of the content on the page No. 16

Troubleshooting Check procedure Symptoms Action / repair work Further action / repair work YES - Replace electronic mainboard YES - g) Check if electrical wires are functional 4.1 Machine is not working (no function) NO - Replace defective(s) wire(s) - continued NO - Go to point 4.2 4 Press On/Off button to perform automatic self test - continued YES - Check if thermoblock heating element is func- YES - Replace NTC 4.2 Backlighted coffee button blinks at irregular tional NO - Replac

Summary of the content on the page No. 17

Repair General disassembly Tool: - Oval screwdriver Empty water system if necessary 5 (see page 12). Unplug from the mains before 33  disassembling machine - appliance must be isolated! Procedure: 1. Remove water tank (33) and drip tray (8) together with drip grid (7) and capsule 2 container (6). 22 2. Remove 2 screws (2) on the front side of 2 the machine. 3. Place machine on the repairing/service holder device (see page 32). 4. Remove 6 screws (2) on the bottom of the machine. 5 2 5.

Summary of the content on the page No. 18

47 + 48 23 Repair Use a torque wrench (90 - 110 Ncm) Replacing thermoblock and NTC to tighten NTC temperature sensor (43) with spring washer (42). Tools: - Torx screwdrivers T10, T30 - Open-ended spanner 10 mm AF - Torque wrench Procedure: 1. Follow general disassembly (see page 16). 2. Remove screw (23) and detach holder (48) with flow meter (47). 3. Remove 3 screws (23) and separate thermoblock (40) with support (40) from chassis. 4. Remove screw M3.5 x 25, washer and rubber gasket and

Summary of the content on the page No. 19

24 23 48 47 23 23 50 49 Line Line Repair Replacing flow meter and On/Off switch Tools: - Torx screwdriver T10 Procedure for flow meter: 1. Follow general disassembly (see page 16). 2. Remove screw (23) and detach holder (48) with flow meter (47). 3. Snap holder (48) from flow meter (47). 4. Unplug connector from flow meter (47). 5. Remove hoses from flow meter (47) and replace it. 6. Assemble in reverse sequence. 28 Procedure for On/Off switch: 1. Follow general disassembly (see page 16). 2.

Summary of the content on the page No. 20

Repair Replacing pump Tools: - Torx screwdriver T10 - Long-nose pliers - Blade screwdriver, no. 7 Procedure: 1. Follow general disassembly (see page 16) 9 2. Unplug fixed pump cable and electrical 12 connection on pump (17). 3. Remove clip (14), hose (18) and o-ring (15). T 128°C 4. Remove angled hose (9). 5. Release pump (17) first from rubber strap (12) at the side of the angled hose. 6. Release pump from second rubber strap 9 (12) and remove right angled connector 18 (20). 17 7. Replace


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