Alex8888
New member
Hi,
I have a new Rocket mozzafiato type v5 and Rocket faustino grinder. Since I bought the machine couple of months ago I have tried everything i could think of to get the pump pressure up to 9 bars or the "green zone". The espresso is watery and weak and as you can see in the video I have uploaded the coffee runs through fast and the pump pressure in the first video is 4 bars the most and in the second video it reaches 8-9 bars after too many seconds. I have the same rocket machine at work and there the coffee is much much better and the pressure reaches 9 bars only a second after I lift the brew lever. I do everything the same when making coffee at work and at home so I'm thinking something could be wrong with my rocket.
I have uploaded these videos:
1: http://www.vimeo.com/996880632?share=copy
2: http://www.vimeo.com/996877899?share=copy
I have tried adjusting the grinder settings to finer grounds, put less and more grounds in the portafilter, put less and more tamp pressure, filling the portafilter as much as possible and pressing firmly so I could almost not insert the portafilter into the group head. That is when I get the best espresso and the best pump pressure, but the amount of grounds and tamp pressure is abnormal.
I've tried to find a solution on google without luck. I've tried all kinds of coffee beans, incl. beans roasted just a week before. I've tried using different portafilters. As you can see in video 2, the pump pressure reaches 8-9 bars with this double portafilter but in video 1 I use the bottomless portafilter and the pump pressure reaches 4 bars. So that seems to matter. Then I have tried using the backflush cap to see if the machine is able to provide a pump pressure of 9 bars, and the machine is able to.
I have never opened the machine itself to try to fix anything on the inside.
Does anyone have a clue what could be wrong or what I could be doing wrong? More things I can try to fix this?
Thank you
I have a new Rocket mozzafiato type v5 and Rocket faustino grinder. Since I bought the machine couple of months ago I have tried everything i could think of to get the pump pressure up to 9 bars or the "green zone". The espresso is watery and weak and as you can see in the video I have uploaded the coffee runs through fast and the pump pressure in the first video is 4 bars the most and in the second video it reaches 8-9 bars after too many seconds. I have the same rocket machine at work and there the coffee is much much better and the pressure reaches 9 bars only a second after I lift the brew lever. I do everything the same when making coffee at work and at home so I'm thinking something could be wrong with my rocket.
I have uploaded these videos:
1: http://www.vimeo.com/996880632?share=copy
2: http://www.vimeo.com/996877899?share=copy
I have tried adjusting the grinder settings to finer grounds, put less and more grounds in the portafilter, put less and more tamp pressure, filling the portafilter as much as possible and pressing firmly so I could almost not insert the portafilter into the group head. That is when I get the best espresso and the best pump pressure, but the amount of grounds and tamp pressure is abnormal.
I've tried to find a solution on google without luck. I've tried all kinds of coffee beans, incl. beans roasted just a week before. I've tried using different portafilters. As you can see in video 2, the pump pressure reaches 8-9 bars with this double portafilter but in video 1 I use the bottomless portafilter and the pump pressure reaches 4 bars. So that seems to matter. Then I have tried using the backflush cap to see if the machine is able to provide a pump pressure of 9 bars, and the machine is able to.
I have never opened the machine itself to try to fix anything on the inside.
Does anyone have a clue what could be wrong or what I could be doing wrong? More things I can try to fix this?
Thank you
