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Gobbosp

First shot v next shot

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Ive noticed that my appartamento seems to lose power for the second and subsequent shots.

 

I just dont seem to be able to manage the consistency like i used to be able to.

 

Does anyone have any ideas why this may be.

 

Thanks in advance.

 

Steve


Rocket Appartamento : Mignon Grinder MK2

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Ive noticed that my appartamento seems to lose power for the second and subsequent shots.

 

I just dont seem to be able to manage the consistency like i used to be able to.

 

Does anyone have any ideas why this may be.

 

Thanks in advance.

 

Steve

 

Could you please define “lose power”?

 

Which grinder have you?

 

Maybe a video could be beneficial for diagnostics?

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Yeah good idea will post a video

 

Grinder is a eureka

 

By lose power i mean 2nd shot takes a lot longer than the first when using same dosage and grind.

 

Thanks

Steve


Rocket Appartamento : Mignon Grinder MK2

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Yeah good idea will post a video

 

Grinder is a eureka

 

By lose power i mean 2nd shot takes a lot longer than the first when using same dosage and grind.

 

Thanks

Steve

 

Do you purge any coffee out of the grinder for the first shot, as it sounds like the second shot is using fresher coffee nd as such will be a much slower pour


AKA Toffee chips

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Do you purge any coffee out of the grinder for the first shot, as it sounds like the second shot is using fresher coffee nd as such will be a much slower pour

 

Yeah ive tried that, i dont generally as a rule as i dont think it makes a huge diff but have tried it to see if it was affecting it, i also purge the water first given its a heat exchanger. Ive also tried leaving it longer between second shots but doesnt seem to affect it.


Rocket Appartamento : Mignon Grinder MK2

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Yeah ive tried that, i dont generally as a rule as i dont think it makes a huge diff but have tried it to see if it was affecting it, i also purge the water first given its a heat exchanger. Ive also tried leaving it longer between second shots but doesnt seem to affect it.

 

How much do you purge? Is the grinder right next to the machine?

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How much do you purge? Is the grinder right next to the machine?

 

Only a couple of seconds

 

Yes about 6 inch from machine ?


Rocket Appartamento : Mignon Grinder MK2

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Only a couple of seconds

 

Yes about 6 inch from machine ?

 

Try purging at least 10g and see how it goes.

 

I had the same issue with some of my grinders.

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Try purging at least 10g and see how it goes.

 

I had the same issue with some of my grinders.

 

Purged the grinder for a good 10g this morning

 

Followed the same ritual

 

1st shot got 36g out in just less than 30s

 

2nd shot took 55s to get the same.

 

I will do a video when i get time.

 

Confused.com

 

Thanks

Steve


Rocket Appartamento : Mignon Grinder MK2

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It can be a pump issue or scaled OPV as well.


GaggiaEnthusiast

 

Buying expensive equipment won't make you barista!

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It can be a pump issue or scaled OPV as well.

 

Ive recently replaced the pump.

 

Is the OPV On top if the group head?


Rocket Appartamento : Mignon Grinder MK2

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It can be a pump issue or scaled OPV as well.

 

Ive recently replaced the pump.

 

Is the OPV On top if the group head?


Rocket Appartamento : Mignon Grinder MK2

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You had better find a portafilter with a gauge to check the pressure, OPV is inside in the machine.


GaggiaEnthusiast

 

Buying expensive equipment won't make you barista!

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You had better find a portafilter with a gauge to check the pressure, OPV is inside in the machine.

 

Would a descale not shift it if it was a scaled OPV?


Rocket Appartamento : Mignon Grinder MK2

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So an update on the issue in case this happens to anyone else, turns out the pump was weak and labouring after the first shot hence my issue.


Sent from my iPhone using Tapatalk


Rocket Appartamento : Mignon Grinder MK2

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On 31/05/2019 at 20:50, Gobbosp said:

So an update on the issue in case this happens to anyone else, turns out the pump was weak and labouring after the first shot hence my issue.


Sent from my iPhone using Tapatalk

How did you find this out?

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How did you find this out?

Sent it in for a service.


Sent from my iPhone using Tapatalk

Rocket Appartamento : Mignon Grinder MK2

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