La Marzocco GS3 Disappointment - Page 13

#121: Post by **houdina** » September 16th, 2007, 7:58 pm

There are two one-way valves on the hot water mixing block. The one-ways look like brass nut on the block with an arrow on the edge. It sounds like the one on the front side of the block (facing the barista) which goes from the block to the pump is stuck open. If you are handy you can unscrew the line from the pump and then unscrew the one-way out of the block and see if something is stuck in it and can be cleared.

Gregg

#122: Post by **Jepy** » September 17th, 2007, 12:30 am

There's a another thread that Jacob posted some pics of the GS3 insides here
In these pics it looks like there are a couple checks. I would look at one coming out of the steam tank fill solenoid(blue coiled wire), and another possible one which looks like it's going into the flow meter(with the white coiled wire on it)

As houdina says, the checks should have some sort of arrow indicating direction on the valve side

September 17th, 2007, 6:02 am

Thank you both for your very clear explanations and the link to the pictures. That all makes very good sense. As it is under warranty I'd best not pull it apart myself. I spoke to Allpress this morning and they are going to see if they have a machine that they can now replace it with.

Many thanks for all your help.

Rosemary

#124: Post by **AndyS** » September 17th, 2007, 4:55 pm

Rosemary wrote:As it is under warranty I'd best not pull it apart myself.

Ah, c'mon, Rosemary. Where's your spirit of adventure?

#125: Post by **cafeIKE** » September 17th, 2007, 6:16 pm

Will the GS3 turn out to be the Edsel of 2007?

September 17th, 2007, 6:33 pm

I cannot take your comment seriously, so I will laugh instead.

September 17th, 2007, 11:06 pm

could your comment be related to the fact that there are only a hundred days (or so) remaining in 2007?

ken

#128: Post by **EricC** » March 19th, 2008, 8:19 am

Rosemary wrote:I spoke to Allpress this morning and they are going to see if they have a machine that they can now replace it with.

Many thanks for all your help.

Rosemary

Hi Rosemary,

I was wondering if you ever managed to get a successful outcome?

Regards
Eric