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Essenza EF 348
Service Manual
48 pgs15.14 Mb0

Nespresso Essenza EF 347, Essenza C99, Essenza EF 348, Essenza D99 Service Manual

en
enVersion 1.0
Service Manual Coffee Machine
Essenza EF 347 / C99
Essenza EF 348 / D99
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Contents
Preface______________________________________________ 3
General _____________________________________________ 3 Nespresso technical website_____________________________ 3 Content updates ______________________________________ 3
General Safety Notes ________________________________ 4
Main Components ___________________________________ 5
Overview ____________________________________________ 5 Overview of rating plates________________________________ 6 Rating Plates - Essenza machine partners __________________ 7 Water circuit _________________________________________ 8
Tech nical D ata _______________________________________ 9
Operation __________________________________________ 10
Making coffee _______________________________________ 10 Programming the water system__________________________ 11 Emptying the water system _____________________________ 12 Energy saving mode __________________________________ 13 Reset to factory settings _______________________________ 14 Coffee machine status (1) ______________________________ 15 Coffee machine status (2) ______________________________ 16
Troubleshooting____________________________________ 17
Check Machine on receipt______________________________ 17
Repair______________________________________________ 20
Safety instructions ____________________________________ 20 General disassembly__________________________________ 21 Replacing NTC ______________________________________ 22
Replacing thermoblock ________________________________ 23 Replacing pump______________________________________ 24 Replacing electronic control board with button prints _________ 25 Replacing compact brewing unit _________________________ 26 Wiring diagram 220V - 240V IEC_________________________ 27 Wiring diagram 120V - 127V IEC_________________________ 28
Function Tests______________________________________ 29
Safety instructions ____________________________________ 29 Measuring flow rate (1) ________________________________ 30 Measuring flow rate (2) ________________________________ 31 Checking for leaks and pump pressure (1) _________________ 32 Checking for leaks and pump pressure (2) _________________ 33 Measuring coffee temperature___________________________ 34 Protective earth continuity test (1) ________________________ 35 Protective earth continuity test (2) ________________________ 36 Protective insulation test (1) ____________________________ 37 Protective insulation test (2) ____________________________ 38 Protective insulation test (3) ____________________________ 39
Maintenance________________________________________ 40
Descaling (1) ________________________________________ 40 Descaling (2) ________________________________________ 41
Spare Parts _________________________________________ 42
Repair accessories ___________________________________ 42 Spare parts EF 347 / C99 ______________________________ 43 Spare parts EF 348 / D99 ______________________________ 46
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Preface
General
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 347 and EF 348.
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.
Nespresso technical website
Visit the Nespresso technical website periodi­cally to check for upgrades, technical modifi­cations, counter measures etc. for this coffee machine: https://business.nespresso.com
Access is restricted and can be obtained by asking your Nespresso technical contact person.
Please keep this manual together with the corresponding service documentation. This way you are assured to have the necessary information.
Content updates
The version number of this service manual is printed on the lower right corner of the page.
Version 1.0
First released service manual version.
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General Safety Notes
Risk of fatal electrical shock and fire! Mains voltage inside the coffee machine.
• Unplug appliance before cleaning.
• Never clean wet or immerse plug, cord or appliance in any fluid.
• Disconnect the mains plug before disassembly - the appliance must be free of voltage.
As an additional safety measure, the use of a residual current device (RCD), also called a ground fault circuit interrupter (GFCI), in the repair centre is highly recommended.
This device does not protect against electrical shock due to contact with both circuit conductors.
Use a GFCI with a trip level of 4 - 6 mA (USA) resp. a RCD with a trip level of 15 - 30 mA (Europe). A trip level above 30 mA provides only very limited protection against harm from an electric shock.
Danger of burns! Hot parts and water under pressure inside the coffee machine (particu­larly in the thermoblock).
• Let coffee machine cool down before cleaning or disassembly.
Example illustrations of typical devices:
1) RCD protected socket-outlet
2) Plug-in RCD unit
3) GFCI socket
4) Plug-in GFCI
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RESET
TEST
RESET
TEST
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Main Components
Overview
1) Closing handle
2) Cover
3) Compact brewing unit (TCBU)
4) Capsule inlet
5) Side panel
6) Espresso button, back lighted
7) Coffee outlet
8) Lungo button, back lighted
9) Container for used capsules
10) Drip grid
11) Drip tray
12) Lower chassis
13) Thermoblock
14) Electronic control board
15) Pump
16) Upper chassis
17) Water tank
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Main Components
Service Manual EF 347 / EF 348 enVersion 1.0
Overview of rating plates
The rating plate can be found at the underside of the coffee machine. It is of varying design depending on the brand and carries the following information:
1. Brand name
2. Voltage and power rating
3. Manufacturing country
4. Conformity with RoHS guidelines
5. Bar code
6. Serial number
7. Machine type
8. Special disposal icon
9. Sign of conformity (CE)
10. Article number of the rating plate
Serial number codification
Example: 121 243 47Q 1234 782 1Ke
12124
production date: 124th day of year 2012 347 machine type (EF no.) Q production site 1234 incremental number per production day 7 machine partner codification 8voltage 2 mains plug version 1K colour version e checksum number
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Main Components
Service Manual EF 347 / EF 348 enVersion 1.0
Rating Plates ­Essenza machine partners
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Main Components
Service Manual EF 347 / EF 348 enVersion 1.0
Water circuit
1) Water tank
2) Water tank valve and connector
3) Pump
4) Thermoblock
5) Flowmeter
6) Coffee outlet
7) Compact brewing unit (TCBU)
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Technical Data
Mains
EUR 230V / 50 Hz USA / CAN 120V / 60 Hz Approvals SEV, CENELEC, CE-conform
UL, CUL, MITI
Cable length approx. 1.5 m
Pump data
Pump pressure
- max. permissible 17,5 bar ± 1,5 bar
- during coffee preparation 9 - 13 bar (depending on brand of coffee)
Flow performance 120 - 240 ml/min. at 12 bar
Capacities
Water tank 0.9 l Drip tray approx. 100 ml Capsule container 10 - 14 pcs.
Power consumption
220 V / 240 V 1’260 W
Energy consumption (CECED / FEA 2009 method)
Energy efficiency class level A - 40% Daily energy consumption 63.8 Wh Annual energy consumption 23.3 kWh
Various data
Pre-heating time approx. ~25 sec. Storage temperature -25° C up to 60° C Safety temperature (thermal cut-off) 167° C Coffee temperature at outlet 86° C ± 3° C
Weight of machine approx. 3 kg (without water)
166 mm
254 mm
291 mm
260mm
166 mm
254mm
291 mm
260mm
EF 347
EF 348
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Operation
Making coffee
1. Rinse then fill the water tank with potable water.
2. a) Press the Espresso or Lungo button to activate the machine. b) Blinking Lights: heating up (25 sec). Steady Lights: ready.
Never lift lever during operation and refer to the safety precautions to avoid possible harm when operating the appliance. During heat up, you can press either coffee button while blinking. The coffee will then flow automatically when the machine is ready.
3. Lift the lever completely and insert a Nespresso capsule.
4. Close the lever and place a cup under the coffee outlet.
5. Press the Espresso (40 ml) or the Lungo (110 ml) button to start. Preparation will stop automatically. To stop the coffee flow or top up your coffee, press again.
6. Remove the cup. Lift and close the lever to eject the capsule into the used capsule container.
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Operation
Service Manual EF 347 / EF 348 enVersion 1.0
Programming the water system
1. Turn the machine on and wait for it to be in ready mode (steady lights).
2. Fill the water tank with potable water and insert a Nespresso capsule.
3. Place a cup under the coffee outlet.
4. Press and hold the Espresso or Lungo button.
5. Release button once the desired volume is served.
6. Water volume level is now stored.
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Operation
Service Manual EF 347 / EF 348 enVersion 1.0
Emptying the water system
The machine will be blocked for 10 minutes after emptying mode.
1. To enter the emptying mode, press both the Espresso and Lungo button to turn the machine off.
2. Remove the water tank and open the lever.
3. Press both the Espresso and Lungo button for 3 seconds. a) Both LEDs blink alternatively.
4. Close the lever.
5. Machine switches off automatically.
6. Empty and clean the used capsule container and drip tray.
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Operation
Service Manual EF 347 / EF 348 enVersion 1.0
Energy saving mode
This machine is equipped with an energy saving feature. The machine will automatically enter power off mode after 9 minutes.
1. To turn the machine on either press the Espresso or Lungo button.
2. To turn the machine off before automatic Power Off mode, press both the Espresso and Lungo button simultaneously.
To change this setting
3. With machine being turned off, press and hold the Espresso button for 3 seconds.
4. The Espresso button will blink to indicate the current setting.
5. To change this setting press the Espresso button: One time for power off mode after 9 minutes One more time for power off mode after 30 minutes One more time to deactivate
6. To exit the energy saving mode press the Lungo button for 3 seconds.
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Operation
Service Manual EF 347 / EF 348 enVersion 1.0
Reset to factory settings
1. With machine being turned off, press and hold down the Lungo button for 5 seconds.
2. LEDS will blink fast 3 times to confirm machine has been reset to factory settings.
3. LEDs will then continue to blink normally, as heating up, until ready. Steady lights: machine ready
Factory settings: Espresso Cup: 40 ml Lungo cup: 110 ml Power off mode: 9 min.
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Operation
Service Manual EF 347 / EF 348 enVersion 1.0
Coffee machine status (1)
After pressing the On/Off button, an automatic self test is performed to check if
- the NTC is connected,
- the NTC is short circuited,
- the thermoblock reaches the standby temperature within 2 minutes.
Operating modes and detected failures are indicated by backlighted coffee buttons as listed in the following table.
)
Operating mode Small cup
Led signal
Big cup
LED signal
Off off off
Ready on on
Error
blinking fast 3 times every 2 sec.
blinking fast 3 times every 2 sec
Heat up Blinking slow Blinking slow
Brewing small cup
Brewing big cup
Blinking slow
on
on
Blinking slow
Rinse small cup
Rinse big cup
Blinking slow
on
on
Blinking slow
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