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Nespresso EF 737, Service Manual

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Nespresso EF 737 Service Manual Download Page 28

28

Repair

Replacing fine-wire fuse

Tools:

- Torx screwdriver T15
- Long-nose pliers
- Torque wrench

Procedure:

1 Follow general disassembly stage 1 and 2

(see pages 24 and 25).

2 Unplug cables of fine-wire fuse (998A)

from electronic mainbord (59),
thermoblock (66) and pump (61).

3 Loosen screw (46) of clip (43).

4 Replace faulty fine-wire fuse (998A).

5 Assemble in reverse sequence.

Summary of Contents for EF 737

Page 1: ...1 en Service Manual Coffee Machine EF 737 EF 741 01 2004 DOG...

Page 2: ...ion 15 Temperature diagram 16 Troubleshooting 17 Checking the machine receipt 1 17 Checking the machine receipt 2 18 No function 19 Malfunctions 20 Coffee temperature too low 20 Coffee temperature too...

Page 3: ...g reed contact 36 Replacing connection to capsule cage 36 Replacing ceramic valve 36 Replacing capsule cage 37 Replacing pyramid plate 38 Electronic mainboard wiring diagram 39 Maintenance 40 Descalin...

Page 4: ...ull advantage of all the functions it is absolutely necessary to follow the instructions in this manual Please keep this manual together with the corresponding service documentation This way you are a...

Page 5: ...R Sensor 5 Steam hot water nozzle 6 Control buttons back lighted 7 Lower part jaw support 8 Upper part jaw 9 Closing handle 10 Hot water steam lever 11 Water tank 12 Water tank connector 13 Thermobloc...

Page 6: ...6 Main Components Overview left side 1 Thermoblock TB 2003 2 Electronic mainboard 3 Electromagnetic valve DC 4 Control buttons back lighted 5 Control Led 6 Container for used capsules 1 2 4 5 6 3...

Page 7: ...nents Overview jaw 1 Ceramic valve and reed contact board 2 Capsule cage connection 3 Blades 4 Capsule cage 5 Ejector 6 Pyramid plate PPP plastic 7 Pyramid plate support 8 Support for brewing unit 8 4...

Page 8: ...tes carry the following information Turmix Date code DDMMY Jura 636 Type E Colour code 2 Appliance modification status K nig 03174 Item number with colour code Date code DDMMY Magimix M200A Type code...

Page 9: ...r circuit 1 Water tank 2 Water tank valve 3 Flowmeter 4 Pump 5 Thermoblock 6 Ceramic valve 7 Coffee outlet 8 Steam pipe and frothing aid 9 Electromagnetic valve 10 Condensation room 11 Drip tray 1 2 5...

Page 10: ...n at 12 bar Weight of machine 4 7 kg without water Capacities Water tank 1 2 l Drip tray 0 45 l Capsule container 10 12 pcs Main Components Dimensions in mm Technical data Pre heating time approx 30 s...

Page 11: ...t insert a capsule yet 5 Wait until machine is ready all control buttons are lighted Press button Large cup approx six times successively to rinse coffee outlet 6 Empty receptable in between if necess...

Page 12: ...ffee outlet 5 Press button Large cup or Small cup respectively Press button again to stop coffee flow before programmed filling amount is reached 6 Briefly open jaw after coffee preparation and eject...

Page 13: ...es 1 Press button Steam 2 Wait till button On Off doesn t blink warm up phase finished 3 Position cup under steam pipe 4 Immerse steam pipe approx 1 cm deep in beverage 5 Turn hot water steam lever to...

Page 14: ...hold on button Small cup or Large cup for at least 3 seconds until the desired amount of coffee is reached 3 Briefly open jaw and eject capsule into capsule container Standard amounts Small cup 40 ml...

Page 15: ...e machine ready Small cup Large cup Steam Empty used capsule container Machine is not ready Drip tray is missing or not properly placed or capsule container is full 3 x 1 x 1 x Temperature is too high...

Page 16: ...tton Steam warm up starts E Press button Steam steam is generated F Press button Steam cool down starts Note After the preparation of coffee or hot water the On Off button may flash red for a short ti...

Page 17: ...ng heating up and then lights continuously How long does the machine need for heating up typical time approx 30 s Orange LED blinks with acoustic signal s Water tank leaks Does the pump work Does hot...

Page 18: ...osing force Check reed contacts Does On Off button blink red during heating up and then lights continuously Does steam escape from steam pipe See pages 40 and 41 See page 42 See pages 43 and 44 See pa...

Page 19: ...lace NTC no yes Pump functionality ok Replace pump no yes Flowmeter functionality ok Replace flowmeter no yes Buttons functionality ok Replace control panel left or right no yes Reed contacts function...

Page 20: ...nk empty Water tank not inserted correctly Counter measure Preheat jaw allow 2 large cups of water to flow through without capsule Descale machine see pages 40 and 41 Replace thermoblock see page 26 S...

Page 21: ...aw closed at all Capsule ejector defect Capsule cage dirty Counter measure Fill water tank Insert correctly Clean descale or replace Replace see page 38 Descale see pages 40 and 41 Replace pump see pa...

Page 22: ...temperature Thermoblock is scaled temperature loss Counter measure Descale machine see pages 40 and 41 Clean tube Check reed contact see page 49 Replace reed contact see page 36 Replace electronic mai...

Page 23: ...Close jaw correctly Replace hose seal or ceramic valve see page 36 Screw capsule cage on fully Tighten connections on the thermoblock or replace see page 26 Replace seals or and hoses Check for leaks...

Page 24: ...ed by hand A tighten lightly B tighten firmly For tightening screws labelled C it is im perative that a torque wrench is used Procedure 1 Remove water tank 19 drip tray 4 and capsule container 5 2 Rem...

Page 25: ...general disassembly stage 1 2 Remove 3 screws 13 from the rear cover 9 on the underside 3 Open jaw and remove 2 screws 111 from the top cover 81 4 Remove top cover 81 5 Remove 2 screws 12 at the top...

Page 26: ...pot at hand for collecting the water left in the thermoblock 6 Remove water connections on the thermoblock 7 Replace thermoblock 66 8 Assemble in reverse sequence Repair Replacing NTC Tools Open ende...

Page 27: ...5 Remove angled hose 57 6 Release pump 61 first from bottom rubber strap 54 then from the top rubber strap 7 Remove seal 51 and angle 37 8 Detach thermostat 68 with clip 67 from pump 61 9 Replace defe...

Page 28: ...Torque wrench Procedure 1 Follow general disassembly stage 1 and 2 see pages 24 and 25 2 Unplug cables of fine wire fuse 998A from electronic mainbord 59 thermoblock 66 and pump 61 3 Loosen screw 46...

Page 29: ...s avoided 3 Unplug all connectors and wires from the electronic main board 59 4 Loosen fastening screw 12 and remove casing with defective electronic mainboard 59 5 Replace electronic mainboard 59 6 A...

Page 30: ...rol panel 34 4 Draw off steam pipe 73 and unscrew nozzle body 75 from steam tube 76 5 Loosen screw 12 and detach defective right control panel 30 6 Assemble new control panel in reverse sequence Repai...

Page 31: ...2 see pages 24 and 25 2 Unplug connector from flowmeter 63 3 Remove hoses 55 and 58 from flowmeter 63 Collect outflowing water in pot 4 Slide carrier 29 out of base plate 1 5 Remove fixing clip 28 and...

Page 32: ...pliers Procedure 1 Follow general disassembly stage 1 see page 24 2 Unplug connectors from electromagnetic valve 62 3 Loosen 2 screws 12 on carrier 82 4 Remove clamp 45 and hose 42 5 Pull off lower h...

Page 33: ...2 Disassemble steam hot water nozzle according to drawing and remove it from steam pipe 76 3 Loosen screw 12 on right control panel 30 4 Loosen upper screw 12 on IR sensor 92 5 Loosen 2 screws 12 on...

Page 34: ...ng wire 115 from thermoblock 66 and disconnect adapter plug 7 Loosen screws 12 and detach right and left control panels 30 and 34 8 Loosen 2 screws 12 on cover plate 32 and steam tube support 31 and o...

Page 35: ...1 and 2 see pages 24 and 25 2 Disassemble jaw as per page 34 3 Remove capsule cage 137 see page 37 4 Remove cover 112 5 Remove both springs 98 6 Remove shafts 108 127 7 Remove side closing lever 120...

Page 36: ...points 1 to 8 see page 35 9 Remove 4 screws 96 and receiver capsule holder 109 10 Remove clamp 45 on connection 91 11 Replace connection 91 and fit new seal 90 12 Assemble in reverse sequence Replaci...

Page 37: ...lacing capsule cage Tool Assembly tool 106 Procedure 1 Open jaw 2 Rotate capsule cage 103 from the cage bracket using the assembly tool 106 3 Replace nozzle body 143 with a new one 4 Fit new spare cap...

Page 38: ...2 Remove ejector 122 3 Remove pyramid plate 123 with receptacle 124 4 Fit new pyramid plate with receptacle Ensure that the pyramid plate is inserted in the correct position 5 Lift lever 94 with finge...

Page 39: ...stat on pump 3 Fine wire fuse on thermoblock 4 Pump 5 Reed contact 6 Control buttons right 7 IR sensor 8 Control buttons left 9 Flowmeter 10 NTC temperature sensor 11 Programming connector 12 Electrom...

Page 40: ...Valve decalcification starts and stops automatically ON 3 s 6 Turn hot water steam lever to the front The entire water tank is flushed out automatically 7 Turn hot water steam lever back and switch o...

Page 41: ...ecalcifier solution Clean and rinse with a lot of water Fill water tank 16 Rinse coffee system by pressing button large cup 5 times repeatedly 17 Turn hot water steam lever to the front The entire wat...

Page 42: ...ed continuously and the pressure regulated using the valve if necessary With increasing temperature the pressure also increases if necessary readjust the pressure to 12 bar 10 Perform measurement for...

Page 43: ...ctor and pyramid plate see page 38 4 Fit pressure gauge 5 Close jaw 6 Position pot underneath 7 Insert filled watertank 8 Connect mains cable Continued on next page Checking for leaks and pump pressur...

Page 44: ...ween 16 19 bar check of pump pressure The pressure will rise slowly due to the temperature increase Keep an eye on the pressure gauge at all times If the pressure exceeds 23 bar the machine has to be...

Page 45: ...plate support 5 Insert capsule and close jaw 6 Press button Large cup 7 Check outflow The coffee should flow out evenly and without splashing to the side 8 If the jet is not correct replace capsule ca...

Page 46: ...g up press button Large cup in order to heat the jaw 4 Open jaw and insert capsule Cosi is the most suitable 5 Close jaw 6 Press button Large cup 7 Wait until 20 ml coffee has flown in the measuring b...

Page 47: ...spring action of closing is not taken into account 6 Read off value Repeat measurement several times as necessary Closing force for new appliance 25N 5N If the closing force is less than 10N replace c...

Page 48: ...e test is ok If lights do not turn off before repeat the test if necessary and check reed contact for jaw position detection see page 49 3 Open jaw fully 4 Close jaw slowly Check if the button lights...

Page 49: ...ch contacts of brown and yellow wires 7 Turn steam hot water lever to the front An acoustic signal is audible otherwise the reed contact is faulty 2 3 4 5 Checking detection of jaw position During the...

Page 50: ...cleaning 1 Procedure 1 Remove capsule from jaw 2 Empty capsule container 3 Empty water tank and drip tray 4 Clean water tank and drip tray 5 Reassemble coffe machine 6 Fill tank with fresh water Maint...

Page 51: ...1 Daily care and cleaning 2 7 Press On Off button Wait till end of warm up phase 8 Rinse coffe outlet by pressing button Large cup one or two times 9 Clean coffee machine Maintenance 9 7 8 30 s ON 1 2...

Page 52: ...52...

Page 53: ...Swimmer 748 yellow modify long 009 0025404 Cover up 748 behind black 010 0026373 Center ring 748 black for water tank 011 0036214 Valve actuator 420 V2 black for water tank 012 0016052 Screw KST PT 3...

Page 54: ...ater leader 037 0005466 Angle connector pump 770 038 0001053 Strain relief screwed transparent 039 0001442 Bracket 946 to pump el zinc plated 040 0036686 Insulation support silicon 737 40 Shore 041 00...

Page 55: ...40 060C 0025555 Mains cable black H05VVF 3G075 1 50m S1 SEV S2 140 90 40 061 0018526 Pump CP4 SP CP2 230V 50Hz without thermostat 062 0036260 Magnet valve 737 cpl 207VDC 2 ways open 063 0012936 Flowme...

Page 56: ...2 0036187 Electronic IR print 737 093 0005255 Washer M3 zinc plated blue 03 2x09 0x0 8mm DIN9021 ISO7093 094 0028218 Ejector lever 748 2 black for brewing unit 095 0029714 Spring 748 V2 Inox torsional...

Page 57: ...asket 758 black for outlet D 28 4 26 0 H 3 9 126 0028220 Support 748 2 module black Brewing unit 127 0024299 Axle 748 module holder 128 0024297 Gusset 748 inox 129 0025678 Cover up 748 Pull spring bla...

Page 58: ...Strand wire EU white 70mm 2xFHL6 3 Ni 998 0001228 Strand wire Europe white 150mm 2xFHL4 8 Ni 998 0001250 Strand wire Europe violet 170mm 1x4 8 Fl Ms 1x6 3 Fl Ms 998 0036427 Strand wire EU black 250mm...

Page 59: ...ssure gauge 0028087 Assembly disassembly tool 0024361 Key for capsule cage 0004872 Special oval screwdriver with Bit 0004878 Bit oval for screwdriver 80005 Spring balance 5kg Pesola AG Switzerland 4 0...

Page 60: ...60...

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