Fiorenzato Doge Conico jamming after switch from single dosing to hopper - Page 6

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drgary
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#51: Post by drgary »

I'm still working with 1st-Line to get better information from the company. They sent me a new capacitor to test. I said it was identical to the one on my grinder that the motor shop said was working to spec. Here's another picture of mine. The new one doesn't have the smudge marks from the motor shop, but I hook it up identically and it jams identically.



I'm following up about whether this grinder needs both a start and a run capacitor for U.S. electrical standards. Still waiting. Meanwhile the grind quality is still excellent for the 1 - 3 doses I run through it without retaining beans in the burrs unless I want to use the remainder for an AeroPress by grinding the jammed beans through at a coarse setting.
Gary
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dmw010 (original poster)
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#52: Post by dmw010 (original poster) »

Gary, thanks for continuing to investigate this. I'm still single-dosing and getting tasty espresso, but hoping to be able to use a hopper some day!

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Bluecold
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#53: Post by Bluecold »

drgary wrote:He says you can't just replace a motor like this, and you can't increase torque by changing belts, because it isn't belt-driven.
You could try to change the gearing. I don't know what the gearing is, but decreasing the size of the sun gear, increasing the size of the planet gears and decreasing the size of the annular gear should do the trick without you having to change the carrier to which the burrs are mounted. You might need to trawl the web sourcing gears, but assuming you find a source, it wouldn't be that expensive. Plastic (Delrin) gears are fine for the torque on them. My Faema MC uses roughly the same burrset and uses plastic gears as well.
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drgary
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#54: Post by drgary »

Good idea. I'd like the grinder manufacturer to solve it whether with gears, modified winding or capacitance.
Gary
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OldNuc
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#55: Post by OldNuc »

I would agree this is the manufacturer's problem to solve. Not generally the responsibility of the consumer to re-engineer a current production item.

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drgary
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#56: Post by drgary »

Maybe a crank? If I get this fixed up right it'll be an HG One knockoff.

Seriously I wonder if it has a run capacitor and is missing a start capacitor. Time to ping Jim again and see if he can get a squeak out of the manufacturer.
Gary
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OldNuc
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#57: Post by OldNuc »

Google has much very good info on what happens when you start changing the capacitance value of the run and/or start capacitors. There are definite trade offs and blindly increasing or decreasing capacitance is not highly recommended.

There are motors with a single start-run capacitor that is permanently connected. Start capacitors that are controlled by potential relays and there may or may not be a run capacitor. The list gets longer. Without the actual wiring or schematic diagram with all values listed there is not much an owner can do to address this type of issue. The motor may be suffering from turn to turn winding shorts and that will cause this problem and the only non destructive way to find it on a single phase motor is to have the design data.

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drgary
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#58: Post by drgary »

OldNuc wrote:Without the actual wiring or schematic diagram with all values listed there is not much an owner can do to address this type of issue.... The only non destructive way to find it on a single phase motor is to have the design data.
Yes. I will ask for that.

Added: Stay tuned. The appropriate pressure is being applied on the manufacturer. We'll see.

Gary
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drgary
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#59: Post by drgary »

This problem may not have occurred with earlier production runs of that grinder. If anyone has this grinder and it works with a hopper at 110v, it may have an extra capacitor that mine doesn't have. So, please post if you have one we can compare.
Gary
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LaMarzooka
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#60: Post by LaMarzooka »

I just stumbled across your Doge Konico issue and thought you may like to know that both me and my friend's Doge grinders work fine with either the the short-hopper (provided by 1st-Line) or the stock, bid-daddy 5-lb one installed. I only converted to single-dosing this year.

My unit is S/N: 083. I'm almost certain I recall seeing 2 capacitors installed underneath back when we defeated and removed the doser's auto-fill feature. Hope this helps with your issue.
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