Question about EXPOBAR Coffee Makers & Espresso Machines

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Initial startup procedure

I have an expobar single w/built-in grinder & a simonelli double.
After water & electrical lines are all connected, does the boiler need to be primed(as with water) to prevent the heating element from burning-out? If source of water runs-out(as with no water pressure from tap), is there some kind of sensor(in machine) that will automatically turn off power to the heating element before level(water) drops too low?

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Hi
u must use water only then heat wil be reduced

Posted on Feb 13, 2009

  • nicra7 Feb 13, 2009

    there is no other sensor for turning the machine off u need to keep an eye over it when in use

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Unplug the unit for a long time and check again.
let me know....

Posted on Feb 13, 2009

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1 Answer

I can hear the grinder on nuova simonelli try to gring, but it seems like soemthing is stuck. how can i fix this?


Remove the bean hopper and vac out all beans, then remove black cover, then 3 phillips screws, and top part of burrs should come off. Clean our chamber then reassemble. DO NOT TURN ON. Make sure middle nut in chamber spins freely, use fingers to turn, if not adjust setting to coarser, until it moves freely, then turn on grinder. All you have to do now is set your grind.

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How do i adjust gran throw on a simonelli grinder


Grinding setting is one simple operation but requires bit patience:

  1. Turn on your grinder and continue setting to fine while burrs are spinning, you stop when you hear metal to metal touch sound(burrs maximally closed finest grinding)
  2. From that point go back quarter of revolution and mark the spot where you stopped with marker to body of grinder and setting plate with one line
  3. Grind little amount of coffee only to fill one sector of dosser than test it at your machine (if it leaks too fast and with yellow color of cream you should go to more fine>><< if it does not leak from the filter holder or it leaks very slow you go to in opposite way.
  4. You test grinding few times bit after each reset of plate grind little amount and take that in one other pot (that will provide to have pure new granulation)
  5. After setting measure the grounded coffee that comes out from dosser it should be about 7 grams, better measurement you can get if you measure 10 doses in one place because you don't get never same amount from 6 sectors of dosser.

PS: the pump pressure of coffee machine should be from 8 to 10 bar and steam pressure should be from 1.1 to 1.5 bar> depends on type of coffees you use.


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1 Answer

What is the proper number setting for the grinder


There isn't one, because your grind depends on the bean you are using, the temperature and so on. The best thing you can do is clear the burr chamber of beans, then turn grinder clockwise until you can no longer turn the brass fitting in the middle, then turn counter-clockwise to about 4 numbers that will give you a nice starting point to setting your grind.

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Fixed it Myself

Red wire --> Cap1
White wire --> Cap2
Blue wire --> PWR Switch
Brown wire ---> Thermal Protection Switch

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It sounds like a heating element issue. Those elements look like a single unit but are actually made up of 2 or 3 independent heating coils - one may not be working. So, you're only getting 1/2 to 2/3 heating capacity, which isn't noticeable until the machine is under heavy steam load.

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