Question about La Marzocco Linea Group 1 Espresso Machine

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My la Marzocco gs3 pressure valve does not reach 12 bars

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Adjust the expansion valve after making sure the pump brew pressure is at 9bar.

Posted on Sep 12, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Calibration (2 group head la marzocco)

press and hold the swirl button on the first group (far left) lights will blink. press the button you wish to program, once you reach the amount of espresso you wish to give press the button again then it will be stored into memori do this to the rest of the buttons on the first key pad. after you finished the first group the computer will automatically transfer the same programing to the second group. Good uck

Posted on Dec 08, 2007

  • 1 Answer

SOURCE: Unable to programme La Marzocco

FYI - the flowmeters can get fried after lots of usage. Back in the day Starbucks used to put pieces of cardboard between the flowmeter and group head to prevent them from heating up. Aside from checking for scale you use test with an ohm reader. I think a functional one will reach 2.4ohm (or maybe 2.8). A broken one will post junk ohm information and bounce around. Replacing them is expensive so I'd just recommend usitng the semi-auto on/off switches. This info comes out of the big oragne Linea maintenance book.

Posted on Feb 21, 2009

EsWorld
  • 1618 Answers

SOURCE: La Marzocco espresso machine troubleshooting

Where is the steam coming from the small valve on the top or the big tall one? If it is the tall one then the problem is in the block electrical box(pressure stat) on the left above the element, that may be stuck and not telling the machine that it has enough pressure turn off the elements.

Posted on Jun 20, 2009

EsWorld
  • 1618 Answers

SOURCE: La Marzocco Expresso g3 how do you reouble

Check the thermostat on the top of the back boiler, if the red pin is up then, make sure that there is water in the boiler then push in pin and turn machine on. Now comes the exciting part we have to find out why the boiler overheated, is it because the elements are damaged or the pressure stat is not working properly.

Posted on Nov 06, 2009

EsWorld
  • 1618 Answers

SOURCE: over backflushing grouphead on double boiler linea la marzocco

No, just make sure that you rinse well and pull a shot and let it drain so that you do not serve soap to anyone.

Posted on Mar 30, 2010

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1 Answer

My machine is hissing on the left side. The pressure is fine and it is still working well. I took off the top and there is steam coming out of a small valve. It looks like it is a release value. Wh


there is two valves that can cause this one is called an anti-vac and the other is called an H/P valve (high pressure release valve or pressure safety valve) anti- vac valve is small and short. hope this helps

Feb 24, 2012 | La Marzocco Linea Series Group 3 Espresso...

1 Answer

The pressure is more the 2 bar in gauge and pressure safety valve is open when this pressure increse more the 2 Bar


Sounds like the the tube that connects to the pressure stat is blocked or the pressure stat is damaged and needs to be replaced.

Mar 10, 2011 | La Marzocco Coffee Makers & Espresso...

1 Answer

How do I increase grouphead pressure on la marzocco linea 2 group?


To increase dispense pressure you turn the adjustment screw at the pump. When pulling a shot (use espresso) on one group the bottom needle of the gauge should read 9bars while pulling the shot.

Dec 16, 2010 | La Marzocco Linea Series Group 3 Espresso...

1 Answer

Expansion valve won't regulate pressure. how do I remove/clean/adjust this valve?


The only thing the expansion valve does is open when the pressure gets to 12 bars when the coffee boiler is heating or when you are backwashing the groups. If you need to adjust wait until red light comes on to say coffee boiler is heating then if gauge is going beyond 12 bars turn end of expansion valve to left to keep it at 12 or right to take it to 12 if it is lower, before doing this make sure pump is set to 9 bars.

Aug 21, 2010 | La Marzocco Linea Group 1 Espresso Machine

1 Answer

Water dripping from my boiler/dispensing pressure gauge


If it is leaking from the gauge then have it replaced ASAP. It is easy to replace, just make sure machine is turned off and cooled and water is turned off.

May 12, 2010 | La Marzocco FB-80 Series 3 Groups Coffee...

1 Answer

La Marzocco Expresso g3 how do you reouble


Check the thermostat on the top of the back boiler, if the red pin is up then, make sure that there is water in the boiler then push in pin and turn machine on. Now comes the exciting part we have to find out why the boiler overheated, is it because the elements are damaged or the pressure stat is not working properly.

Nov 05, 2009 | La Marzocco Linea Group 1 Espresso Machine

1 Answer

Constant leaking into my drip pan reservoir from the overflow valve


Here is how to repair, on the gauge there are 2 needles, the bottom one is what we will be checking. Turn the expansion valve clockwise slowly until it gauge reads 12 bars, if it goes past turn other way slowly. Your goal is to set it at 12 bars, when tat is done there will be a leak about a drip a second from the valve.

Jul 06, 2009 | La Marzocco Linea Series Group 3 Espresso...

1 Answer

La Marzocco espresso machine troubleshooting


Where is the steam coming from the small valve on the top or the big tall one? If it is the tall one then the problem is in the block electrical box(pressure stat) on the left above the element, that may be stuck and not telling the machine that it has enough pressure turn off the elements.

Jun 20, 2009 | La Marzocco Coffee Makers & Espresso...

1 Answer

La Marzoca 2 group dispense pressure only around 2 or 3


Pump pressure is adjusted at the pump. There is a nut or screw next to the water inlet that is used to change the discharge pressure. This assumes that your pump is running. Your pressure of 2-3 bars sounds like the pump is not running at all. Put your hand on the motor to determine if it is running. If it is not running then that is the problem you need to diagnose. If it is running then it could be the pump or coupling.

Jan 28, 2009 | La Marzocco FB-80 Series 3 Groups Coffee...

1 Answer

Calibration (2 group head la marzocco)


press and hold the swirl button on the first group (far left) lights will blink. press the button you wish to program, once you reach the amount of espresso you wish to give press the button again then it will be stored into memori do this to the rest of the buttons on the first key pad. after you finished the first group the computer will automatically transfer the same programing to the second group. Good uck

Nov 12, 2007 | La Marzocco FB70

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