Jura Coffee Machine grinder motor

[Trashnetter]

Hi
Not sure where to post this.
I have just received from overseas my replacement coffee machine grinder motor however this motor which is 230vdc does not have the same capacitors fitted to it as the original does.

Silly question if anyone knows would they be needed? What are they for? Just wondering if i need to install on the the new motor as they are on both positive and negative terminals then spot welded to the the motor body. I believe they are 1.0 to 2.5nF according to online data sheet. Perhaps for noise ?

Thanks for any info in advance

[stj]

Re: Jura Coffee Machine grinder motor

noise filters,

but shouldnt it be 230v AC ??

[Trashnetter]

Re: Jura Coffee Machine grinder motor

Hi
Noise filters you believe?
Yes, definitely 230VDC. The US models run 110VDC. Must be a control thing as when there are no beans in the grinder it figures it out through load on the the grinder, no other sensors to tell you its empty! Yet some how it knows.
Thanks for your reply though.

But yes the unit obviously plugs into 230-240v AC
thanks

[R_J]

Re: Jura Coffee Machine grinder motor

I agree, they are just noise supression capacitors. the value is not too important, put'er in.

[Trashnetter]

Re: Jura Coffee Machine grinder motor

Thanks very much for your input. Putting her in

[momaka]

Re: Jura Coffee Machine grinder motor

Noise filters indeed, as the two other posters before me said.

but shouldnt it be 230v AC ??

When high torque is required in a small space (such as in a food processor, blender, grinder, etc.), then typically DC motors are used, as they have much higher starting torque, especially for their size. Only when you get to the larger applications, such as in-sink food disposers, garage door openers, etc., then AC motors are typically used.