Question about Isomac Rituale Espresso Machine

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Isomac Rituale over pressure

After pulling the coffee lever, on my Isomac Rituale, and pump pressure reachs 3 the boiler pressure shoots up and the pressure relief valve is activated at 2.5 bar.

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  • Master
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Its definately due to faulty pump.replace the pump to get it to work normal.

Posted on Sep 08, 2008

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  • Isomac Master
  • 19,396 Answers

Check if the pressure relief valve is working fine, if not you need to replace the valve.
If valve is fine check if there is an obstruction in the lines, this can incrtease the pressure.
If everything else is ok, replace the pump.

Posted on Sep 08, 2008

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  • Ginko
    Ginko Sep 08, 2008

    More likely you will fix this just replacing the valve.

  • Ginko
    Ginko Sep 08, 2008

    When the pump is faulty usually you get no pressure or low pressure.
    Check if lines are ok, if a hose is squeezed the pressure will increase, the most common is always a faulty safety relief valve.


  • Ginko
    Ginko Sep 08, 2008

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An initial short run of the pump draws water from the reservoir into the boiler where it is heated by an electrical heating coil. There are two outputs from the boiler, one from the top runs through a pipe to a steam valve. When the steamer handle is turned, the steam valve opens and steam is piped out through the steam tube for frothing milk. The second output from the boiler is on the underside and is stopped by the normally closed flow valve. When the water in the boiler reaches the right temperature, a sensor switches on the OK light. When the light is on, the user pushes the pump switch and more water is pumped from the reservoir. The pressure in the boiler increases because the pump is trying to push in more water and this forces the spring loaded boiler flow valve to open allowing hot water to run out. As the sump filled with ground coffee is fitted to the boiler output, the water is forced through the coffee and out of the sump where it pours into a waiting cup.
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------------ The first three steps aren't strictly necessary for disassembly however if you're using a long handle screwdriver then removing the base makes it easier to gain better access to some of the screws.
Step 1. Remove the screw on each base arm.
Step 2. ... then lift and remove the arms.
Step 3. Remove the two screws on the base of the unit. Unlike in this photo I would recommend you avoid resting the machine on its back unless you are sure it has been completely drained. The black plastic base can now be pulled away allowing easier access to some of the screws that will be removed later.
Step 4. Undo the two screws on the top rear.
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Step 8. To help with shifting the top out of the way, disconnect the hot plate/boiler heater connection. This will allow you to push the top of the unit away giving you the room you need to get inside.
Step 9. Unscrew the electrical safety earth and move the earth wiring out of the way.
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Step 12. Remove the two screws . The black plastic underside casing can now be pulled away (plastic tabs need to be pushed aside ). Step 13. Pulling away the plastic underside once screws and tabs are removed.
Step 14. Loosen the four black Torx (star shaped) boiler screws . Water in the boiler may leak out at this point so ensure the unit is upright and a towel is placed underneath.
Step 15. Remove the four nuts (three arrowed) from the underside of the boiler unit.
Step 16. Lift up the top of the boiler assembly along with the steam outlet and place to one side. The two halves of the boiler assembly are sealed with a rubber gasket which should remain attached to the upper housing. Make sure this is properly in place when reassembling.
Step 17. The lower boiler assembly can now be lifted out.
--------
to get more detailed help click this link directly.it has all the required instructions and pictures to disassemble the unit.the model number in the link is bit different from yours but the system is very same so it will help you
http://www.r3uk.com/index.php/tech-tips/34-disassembly-guides/129-delonghi-ec710-coffee-maker-disassembly-and-repair
click on the link above directly.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

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