Monday, November 12, 2012

KRUPS - Le Cube NESPRESSO _ EF 472 COFFEE MACHINE_ PUMP REPLACEMENT




REPLACING PUMP WITH THE FINE WIRE FUSE


  • When mounting the safety clips (4) make sure that the housing of the fine wire fuse (900) is positioned exactly below the safety clips.
  • To replace a defective fine wire fuse with in the corresponding wiring, the support (13) of the compact brewing unit must be removed from the floor (32).
Repair tip for the fluid system support
  • Remove the fluid systems support (11) from the floor (32):  insert the tip of the screwdriver into the slits in the housing base and press and locking latches to one side. Simultaneously lift the support (11). After loosening both locking latches, tilt up the support (11) and pull it out of the anchoring on the other side.





  • Always replace a defective pump (48) together with the fine wire fuse.  • When installing a new pump the angled hose connection (44) may have to be realigned: the white plastic Iid on the pump is rotatable and has two flat surfaces onto which the flat wrench can be placed.
Mounting tip for the thermoblock.
  • When mounting the thermoblock (5) align the positioning holes on the bottom to the damping element (8).
REPLACING THE FLOW METER


  • Pull the flow meter (41) firmly upwards to remove it.
REPLACING MAIN BOARD WITH THE BUTTON PINS



  • Check the assembly position of the spring (14).
  • A label on the housing of the mainboard (35) contains specifications on the hardware and software version.
  • After assembly check the plug arrangement of the mainboard.
REPLACING ON/OFF SWITCH AND/OR THE MAINS CABLE



  • Check the assembly position of the spring (14).
  • Remove the insulation housing (23) : place screwdriver tip from below into the switch housing and force the switch out (62).
  • The onoff switch (62) has no markings for the connections. Check its switch functions and wiring with a digital multimeter (j) and compare it with the diagram (see "Wiring diagrams")
  • The cable strain relief (37) is under tension.Therefore, hold the cable strain relief with your finger when unlatching it.
WIRING DIAGRAM [FOR 230V - EU _ FIRST SERIES]


1) Print for button "On/off"
2) On/Off switch
3) Heating plate
4) Thermoblock 230 V
5) Pump 230 V
6) Flow meter
7) Mainboard 230 V
8) Print for buttons "Coffee small/large"

WIRING DIAGRAM FOR 120V - UL


1) Print for button "On/off"
2) On/Off switch
3) Heating plate
4) Thermoblock 120 V
5) Pump 120 V
6) Flow meter
7) Mainboard 120 V
8) Print for buttons "Coffee small/large"

WIRING DIAGRAM FOR 100V - JAPAN


1) Print for button "On/off"
2) On/Off switch
3) Heating plate
4) Thermoblock 100 V
5) Pump 100 V
6) Flow meter
7) Mainboard 100 V
8) Print for buttons "Coffee small/large"




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