Mahlkonig K30 jamming - Page 5

#41: Post by **OldNuc** » May 17th, 2015, 7:54 am

Well that label makes much better sense. Motor shop to see what is wrong with it is the best bet.

#42: Post by **Tia93** » May 17th, 2015, 8:26 am

Sorry to bother, but I'm not really getting the whole thing here and I'm considering the K30 for myself.
This is due to the motor with light roast? Are they to hard to be ground for new burrs that need to be seasoned? What about the "one burr at a time" solution? I don't really get what that means.
Sorry for silly questions.
Thank you.

#43: Post by **uscfroadie** » May 17th, 2015, 9:00 am

Tia93 wrote:Sorry to bother, but I'm not really getting the whole thing here and I'm considering the K30 for myself.
This is due to the motor with light roast? Are they to hard to be ground for new burrs that need to be seasoned? What about the "one burr at a time" solution? I don't really get what that means.
Sorry for silly questions.
Thank you.

The lighter the roast, the harder the bean, thus takes more power to grind. The one burr at a time means install one of the two burrs (upper or lower) with one of the older burrs (upper or lower) .

Keep in mind this is not the norm, otherwise every person that bought a K30 would be posting that it can't grind light roasts, which is not the case as I have no trouble on mine.

It would be nice to know how this grinder was treated in the first 82,000 shots of its life.

OldNuc wrote:Motor shop to see what is wrong with it is the best bet.

Agree.

#44: Post by **OldNuc** » May 17th, 2015, 9:37 am

Either the capacitance value is too low and/or there are failed windings in the motor.

#45: Post by **Tia93** » May 17th, 2015, 10:20 am

uscfroadie wrote:The lighter the roast, the harder the bean, thus takes more power to grind. The one burr at a time means install one of the two burrs (upper or lower) with one of the older burrs (upper or lower) .

Didin't really thought of that, thank you.

I was pretty sure it was not common (I've read really a few if any complaining about the K30), but thank you for clearing it out.

#46: Post by **MWJB** » May 18th, 2015, 6:55 am

OldNuc wrote:Either the capacitance value is too low and/or there are failed windings in the motor.

How would the thermal protection work?

#47: Post by **Flipper** » May 18th, 2015, 7:34 am

Hey, the grinder you have there has no US setup. So it will lack power to grind hard, lighter posted beans. Do you know where the grinder was used? Especially new burrs require higher torque since they are more aggressive and faster due to (still) sharp teeth...new burrs together with an European setup motor and light beans cause the grinder to jam. The requirements for the motor setups have changed a lot since 2007. Back then nobody was using light roast beans for Espresso.
So you need to consider this before blaming the K30 !

#48: Post by **JohnB.** » May 18th, 2015, 7:53 am

The Euro K30 in question actually has a higher power rating (580w) then the U.S. version (545w).

#49: Post by **Bluecold** » May 18th, 2015, 7:56 am

Flipper wrote:The requirements for the motor setups have changed a lot since 2007. Back then nobody was using light roast beans for Espresso.
So you need to consider this before blaming the K30 !

No other old commercial grinder has issues with newfangled light roast for espresso. Not even the spanish discount brands.

#50: Post by **OldNuc** » May 18th, 2015, 8:06 am

A thermal switch in the windings is mostly a bad joke.

I don't think the OP is/was blaming the grinder and the OP is located in Glasgow. I think he is looking for a fix to the problem.