I rinsed the brew unit before and a spare part (like a U-shape plastic with wire hang onto it) fell off the brew unit when i removed it from the machine. it's supposed to sit right under the top chute (where you usually put the cleansing tablet into) and so i put it back into its slot. however when i tried to replace the brew unit into the machine, i didnt click well and the display keep showing "brew unit miss." I followed the instruction on the manual and put the tube on a side of the brew unit on right angle etc. but it still doesnt work. pls help!
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I assume you mean a 5cm by 5cm squarish piece of black plastic. If so this is the part of coffee chute. When looking at coffee machine from the front it goes on left hand side of the brew unit about half way up. You slide it on below the start of the chute on the brew unit and essentially it extends the chute. It can be installed upside down. If it's fitted correctly if it looks like a 'W' when the brew unit is viewed from left hand side. If fitted incorrectly it looks like an 'M'.
Hi, open the door on the right. The brew unit is the thing with the handle that has the "press" on it. You need to push on the upper left side of the brew unit until it clicks. There is an outlet spout on the opposite side of where you are pushing. It goes into an intake port that needs to be lubed, so the outlet spout will slide in without pushing back. That should take care of the missing brew unit.
Have you ever cleaned and lubricated the brew group?
You remove the tray and set it aside - then push to the right the plastic bar that says "press" and pull out the brew group. It comes out as a complete unit. You can rinse it under the sink - turn it over and rinse off the filter disk and rinse off any coffee grinds that may be stuck all over in the mechanism. Do not use detergent, do not put in the dishwasher. Just rinse it off really well.
The mechanism should be lubricated with food safe lubricant after about 500 coffees. There are two sets of tracks that are the main thing to lubricate. You can get the food safe silicon grease at any of the espresso shops like wholelattelove or seatle coffee gear etc. etc.
If the brew group moves freely after you have cleaned it, you need to make sure it is the home position - the round well with the black plastic shower screen at the bottom should be centered under the funnel that the coffee grinds drop into - and on the front face, below the "press" bar there is a round bushing with two arrows that show be pointing at each other showing that it is lined up in home position ready to be reinserted into the machine.
Remove the brew unit, find the 2 screws above the top shower the connects the discharge tube to spout. Remove screws and carefully remove spring and ball some have a plastic seat at end of spring. Clean tube make sure there is no coffee grounds blocking tube, reassemble and test.
I hope this Jura F90 dismantling guide may offer some clues for
your E-series machine.
Before you start remind yourself of the risks. In case of a mess up,
below I've listed a firm selling spares in Europe. In the UK it is
assumed that it you can afford the BMW of coffee machines, you can
afford to fix and service it too. However I haven't tried any of the servicing firms so they, and yours could be really, really helpful and cheap.
You will need about 4 different torx; hexagonal and possibly unique screwdriver
bits to remove all screws. A plastic pry tool (used for mobile phones)
will help where plastic lugs hold on the side and top panel.
Empty beans; water store and remove the waste tray. On the Jura F90 use
pliers to undo two oval headed screws at the back at the top. You'll be
able to remove the top panel after using a pry tool to disconnect two
lugs at the front edge.
You don't want to dismantle the coffee grinder and its hopper. Retain
the hopper's rubber seals or glue them in place before you lose them as I
did. Four screws hold the central back panel. Slide out a white key
underneath the machine (can't recall how crucial this was).
The side panels are removed by using a pry tool to release lugs all down
the edge where these panels meet the front. Work slowly to manoeuvre
the side panels off. If you simply want to clean the brewing unit
externally then just remove the panel on the water side.
Find the water inlet just where the water tank sits. A screw here allows
you to remove a plastic piece - but take a photo of how it slots in.
This gives access to the lower end of the brewing unit. If the plastic
piece is still it the way, you can ease off the water pipe from the
water inlet and put it aside.
A number of different brands are made by one firm and branded. Thus the
guts of these machines are similar. The brewing unit in the Jura F90 is
almost identical in many machines. The screws and attachment places are
different. The water inlet and valve are different. Cleaning the parts
you can now see may fix a Malfunction 8 without removing and dismantling
the brewing unit. The machine is partly operable in this state - cover
the exposed electrical connections and remind yourself of the danger
here. Thus you can switch off the power when the brewing unit's white
wheel is at the top and then at the bottom. In this way you will get
access to places causing any jam. You might just need to clear the inner
chamber and path for two plungers with two large O-rings. You can see
the water inlet nozzle with its o-ring which can perish and cause coffee
or water to go to waste. Silicone grease only where the O-rings slide.
Leave the other plastic parts ungreased. As I said you might get away
with not disassembling the brewing unit. You can however buy a
maintenance kit or a new brewing unit from the shop below.
You will want to avoid removing the nylon water pipes - unless they're
actually leaking. These pipes are held in place with a wire clip (remove
with a flat head screwdriver). Ease the nylon pipe with its brass
collar out of its socket. The pipe goes into an O-ring in the pipe's
socket - this might fall out.
Removing a brewing unit is like removing a car engine. The link at the
shop below has a pdf (Anleitung_Jura_E.pdf) There is no need to force
anything. On the Jura F90 the brewing unit is removed by undoing two
obscure screws from the coffee grinder side. I had difficulty removing
these and I wish I had taken time to find the right tool instead of
wearing down the screwhead.
On the electronic side there's an optosensor (encoder) unit held in
place with a steel clip. You might remove this to access one of the two
screws. At the bottom of the brewing unit, the water inlet valve is
fixed to the machine with a single screw. Next, on the water tank side,
you'll see two lines of screws that hold the assembly in place. The
middle screws of the screws allow you to separate the unit from the
gears. The top two holes don't have screws.
Coffee machine spare part supplies are not as common in the UK as they
are in mainland Europe. You'll find this web useful because of the
pictures: www.kaffeemaschinendoctor.de is a German web shop for machine
spares AND there's a pictorial of how to dismantle the Jura F90 as a
pdf. Google will almost translate it). Juradoctor.de also carry lots of
spares but don't seem to ship to my country.
Take the brew unit out again, and try to twist the rotational mechanism so that the little arrows in the front of the axis align. This should allow you to insert the unit.
On insertion, you might also need to push the little handle on the front of the brew unit to allow the coffee trough to fit.
The brew unit missing switch is inside the slot at top back wall where the top of the brew unit puts an angled piece of plastic into the slot. The piece is a slope like a nose so it gently pushes the switch as you instert the brew unit. See if the brew unit reaches this slot on the wall. If it doesn't the brew unit most likely jammed up and was removed while the gears were not in home position. Now the gears are not allowing the brew unit to return fully inserted.
If you're handy you can call Miele tech support and request they walk you through steps to diagnose this. They will discover if the gear is out of home position or not. If it is not and the switch is in contact with the brew unit you may be in luck, the swith is cheap. But if the electronics no longer reads the switch signal it's 800 bucks to replace. Good luck!