Nespresso EF 473, EF 474 manual Replacing flow meter and On/Off switch, Procedure for flow meter

Page 19

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.

Procedure for On/Off switch:

1.Follow general disassembly (see page 16).

2.Remove screw (23) and detach support

(49)with On/Off switch (50).

3.Remove 2 screws (23) and strain relief

(24)of mains cable.

4.Press in lockings and slide support (49) backwards.

5.Unplug all connectors from On/Off switch

(50)and replace it.

6.Assemble in reverse sequence.

)Checkswitch.for correct wiring of On/Off

Service Manual EF 473 / EF 474

 

 

 

 

24

23

 

 

 

 

 

 

 

48

 

 

 

 

 

 

47

 

28

 

 

 

 

 

 

 

 

 

 

 

23

 

 

 

40

 

 

 

 

 

 

 

 

50

23

 

 

1

1a

 

 

 

Line

Line

to machine

 

to mains

 

 

 

Neutral

 

 

Neutral

 

 

2

2a

 

 

 

 

 

 

49

 

 

On/Off switch

 

 

 

 

 

 

 

 

 

19

 

 

 

Version 1.0 en

Image 19
Contents Essenza FS Contents Preface Overview Main ComponentsSerial number codification Overview of rating platesWater circuit Technical data Preparation OperationDo not insert a capsule yet Fill water system Procedure to fill water systemMaking coffee Programming Reset to factory settings Empty water system Coffee machine status Operating modes Left Coffee buttons LED signals RightOperating status of coffee buttons Checking the machine on receipt Troubleshooting Further details in order to take decision Repair General disassemblyTool Tools Replacing thermoblock and NTCProcedure for flow meter Replacing flow meter and On/Off switchProcedure for On/Off switch Replacing pump Replacing electronic control board with button prints Replacing compact brewing unit CBU Pump Pump On/Off switch Repair Descaling Carefully read safety instructions on decalcifier packageDescaling Sec RinsingMeasuring flow rate Preparation unplug machine from mains Checking for leaks and pump pressureSwitch off machine Open valve to empty pressure gauge Coffee temperature should be approx C ± 3 C 187 F ± 5.4 F Measuring coffee temperatureProcedure machine is switched off Daily care and final cleaningSpare Parts Repair accessoriesSpare parts EF Electronic set 230V EF Coffee outlet & front ring EF 471 package 29 39154 Coffee buttonEF 30 43061 Espresso button EF 26392 Version 1.0 en