Mahlkonig K30 jamming - Page 4

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jeebsy (original poster)
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#31: Post by jeebsy (original poster) »



It's the older motor. Should say again it was only an issue with light beans I used, other beans were ok.

The capacitor I changed was the cylinder screw in one that sits to the left of the motor, my electrical knowledge is very limited so not sure if there is another one in there.

I'll speak to the motor shop when I have some free time in a couple of weeks.

Like someone else said though, 20 year old Mazzers don't skip a beat. Bit frustrating to be having this, but it's not the end of the world if its just temporary until the burrs are run in

OldNuc
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#32: Post by OldNuc »

Motors with separate start and run caps usually also have a centrifugal switch. That is somewhere in the 1/6 hp power range which is a bit wimpy for a grinder.

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uscfroadie
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#33: Post by uscfroadie replying to OldNuc »

Wow, that is low. My newer K30's motor is 545 watts; nearly double that of the one being discussed here.

This thread makes me think of the Duranium burrs people installed in Super Jolly years ago only to have them stall on light roasted beans...
Merle

OldNuc
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#34: Post by OldNuc »

So, they nearly doubled the power consumption and that would just about double the available motor power.

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JohnB.
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#35: Post by JohnB. »

My 2005 K30 is also rated at 545w so I doubt that 300 number on the motor housing is the total wattage.

Jeebsy - What is the build date & wattage listed on the Data decal on the bottom cover of the grinder?
LMWDP 267

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uscfroadie
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#36: Post by uscfroadie replying to JohnB. »

For a data point, I hooked up my Kill-A-Watt just three minutes ago to see the draw, both in standby and while grinding. In standby the draw was 3.6-3.8 watts, with the grinder hitting a peak of 577 watts while grinding. Mahlkonig specs shows the motor's ratings anywhere between 470 and 850 watts, depending on 110/220 and 50/60 hz.

From their K30 FAQ...
What is the electrical current consumption of the K30?
• 2,4 - 4,7 A when grinding,
What is the electrical power consumption of the K30?
• 470 - 850 W when grinding,
• 2,5 W in standby.
Merle

OldNuc
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#37: Post by OldNuc »

That is basically a 1/2 to 1 hp motor load.

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uscfroadie
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#38: Post by uscfroadie replying to OldNuc »

Yep, their site list the 110-115v motor at 3/4 hp.
Merle

OldNuc
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#39: Post by OldNuc »

That would be the same for the 240v motor as well as the current will be 1/2 the 120 v value. The 50/60 cycles change the operating RPM for the most part. I would believe the 3/4 general rating for the motor. That 300w rating is way low to grind green beans and it is probably not happy even with a Vienna roast level. Just seems way low.

jeebsy (original poster)
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#40: Post by jeebsy (original poster) »