fabchef Senior Member Joined: 27 Feb 2007 Posts: 63 Location: mtl Expertise: I love coffee
Posted Mon Jan 21, 2013, 3:30pm Subject: comm. grinder hook-up..direct to machine or transformer (220v)?
Hi everyone, I brought our commercial grinder (for work) to get looked at (burrs,ect). In the meantime i have our old rossi comm. grinder. Right now it have it plugged into a converter that will make it plug into a regular 110 outlet. The grinder does work, but find that when it starts it seems to "wind up" and just noticed before that it got stuck. I cleared out the beans and it started ok. I want to know, will it work better, with more power, if we hook it up directly to our commercial machine (220v)? thanks fabs
calblacksmith Moderator Joined: 25 Nov 2007 Posts: 5,642 Location: Riverside, Ca, U.S.A. Expertise: I live coffee
Espresso: ECM Veneziano A1 Grinder: Many different commercial Vac Pot: 40s era Silex Drip: Milita, Bunn&Curtis... Roaster: Cast iron pan, gas burner
Posted Tue Jan 22, 2013, 6:53am Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
I am guessing that it is a 220v grinder, you did not say so specifically thought it seems that you have plugged a 220v grinder into a step up transformer to run on 110.
A 220v motor will run on 110 but with VERY low starting power (torque) and at a lower over all loss of power. This is what it seems that you are trying to say.
Any time you can remove any adapter, converter, or other device that tries to make do with other than what the machine is designed for, that is a good thing. If you have 220 v available and it is a 220 v grinder, then I advise to hook it up to what it wants.
In real life, my name is Wayne P.
Feed the newbs, starve the trolls and above all enjoy what you drink!
fabchef Senior Member Joined: 27 Feb 2007 Posts: 63 Location: mtl Expertise: I love coffee
Posted Tue Jan 22, 2013, 7:10am Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
Hi Calb.....sorry i left out some info. Yes it is a 220v grinder and yes, for the moment it is hooked up to a step-up transformer. As you mentioned, right now the way it's hooked up, it does have low start torque. I guess i'll have it hooked up straight into the coffee machine's power supply. thanks again, fabs
calblacksmith Moderator Joined: 25 Nov 2007 Posts: 5,642 Location: Riverside, Ca, U.S.A. Expertise: I live coffee
Espresso: ECM Veneziano A1 Grinder: Many different commercial Vac Pot: 40s era Silex Drip: Milita, Bunn&Curtis... Roaster: Cast iron pan, gas burner
Posted Tue Jan 22, 2013, 1:01pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
If the transformer is properly sized to account for the higher current a motor uses on starting (as much as 3 times the rating on the label of the machine) a transformer should work, I am guessing that either the transformer is too small or is not operating properly. Or, the grinder may have issues ????
The only way to know for sure is to give it a good source of power to see what happens. Good luck!
In real life, my name is Wayne P.
Feed the newbs, starve the trolls and above all enjoy what you drink!
MikeReilly Senior Member Joined: 28 Oct 2007 Posts: 277 Location: Vancouver Island Expertise: I love coffee
Espresso: La Cimbali Junior D, Gaggia... Grinder: Mazzer Mini Drip: Cuisinart Roaster: Behmor, I-Roast 2, Popper
Posted Tue Jan 22, 2013, 3:55pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
I have a similar grinder that was given to me recently. I'm going to order a step up transformer to get the 240v for it. Unfortunately, mine has no plate giving me electrical specifications (Watts, 50 or 60 hz, etc) so I was wondering if yours did have at least a Wattage (VA) rating and what that might be? I seem to recall the RR's being between 150W and 200W, but I don't want to proceed without more than a vague memory.
fabchef Senior Member Joined: 27 Feb 2007 Posts: 63 Location: mtl Expertise: I love coffee
Posted Tue Jan 22, 2013, 9:29pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
ya i'll be calling our maintenance company to have it hooked up directly to it, i remember it being much stronger when it was hooked into the machine.. fabs
fabchef Senior Member Joined: 27 Feb 2007 Posts: 63 Location: mtl Expertise: I love coffee
Posted Thu Jan 24, 2013, 1:26pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
update*** well i went and bought a bigger transformer (750w compared to 300w), and noticed a difference right away, it started much better with less force. I will still ask the tech. to see if it's better to hook it up to the machine directly. fabs
MikeReilly Senior Member Joined: 28 Oct 2007 Posts: 277 Location: Vancouver Island Expertise: I love coffee
Espresso: La Cimbali Junior D, Gaggia... Grinder: Mazzer Mini Drip: Cuisinart Roaster: Behmor, I-Roast 2, Popper
Posted Thu Jan 24, 2013, 3:05pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
fabchef Said:
update*** well i went and bought a bigger transformer (750w compared to 300w), and noticed a difference right away, it started much better with less force. I will still ask the tech. to see if it's better to hook it up to the machine directly. fabs
fabchef Senior Member Joined: 27 Feb 2007 Posts: 63 Location: mtl Expertise: I love coffee
Posted Thu Jan 24, 2013, 5:02pm Subject: Re: comm. grinder hook-up..direct to machine or transformer (220v)?
Mike..so far so good, the difference is in the start up force...it's way better now. Once it gets going, it's not a problem..was just when you turn it on, as there are beans in there, it was having a tough time...not it starts well. fabs
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