Commercial dishwasher

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goldstar

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New Jersey
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Electrical Contractor
Has anyone had experience with this commercial dishwasher ? It's a Jackson Tempstar unit (see nameplate attached. I have a campground facility that doesn't have too many power options available. They have a 200A, 208 1 phase service to the food pavilion and also a 200A, 240V 3 phase w/ high leg. Both panels are about 150-200' away from the area they want to install this unit. I would have to do some fancy re-structuring of the 3 phase panel in order to get a 3-pole breaker in it. The panel is in a common toilet area and not too much room to work.

Anyway, the reason I'm asking is should I assume that wash motor, wash heater and rinse motor could possible all run at the same time ? 51 amps and a 200' run in PVC is pushing the envelope for this.

Appreciate your thoughts.
 

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Simplest method would be to use the total load number based on the applied voltage. As you know the 1Ø panel is of no help with the 3Ø unit.
 
I imagine some people would feel cheated if the dishwasher did a load in even 10 minutes.
 
I'm not sure if this is the exact model they have but the specs state that it is field convertible to single phase. I'll have to try and reach out to the company and find out :

 
I imagine some people would feel cheated if the dishwasher did a load in even 10 minutes.

The specs for this one is 58 racks per hour so that's slightly more than a minute per load.

And yes, I do see where it mentions that it's field convertible to single phase. Another supplier provides the installation manual with schematics. Go to the last page for conversion information. For your purposes now to determine your single phase load, you should be able to use the information for a single phase unit.


-Hal
 
Thanks for all your replies. After I told the camp owner how much it would cost for me to get power to that area he decided to tell the caterer to provide his own human pot washers :cool:
 
Wash cycle 45 seconds. Rinse cycle 11 seconds. My dishwasher runs for one hour and 38 minutes.

Commercial dishwashers are more power-intensive to run, both in terms of water heating and electrical power, because they are designed with speed and thru-put as the most critical design factors. The operator needs to wash dishes from dozens or even hundreds of customers each night, plus the dishes used within the kitchen. The dishwasher also has no dry cycle. It has multiple portable racks, so that you can load, wash, and air dry separate loads simultaneously, keeping the dishes assembled in the rack at each stage. They also are mounted at counter-top level, rather than beneath the counter, for the efficiency of the operator's workflow. The operator can load on the left, rinse off excess food in the sink with the overhead hose, slide it in to the dishwasher, and then slide it to the right to air dry.

With a residential dishwasher, the thru-put isn't as critical. A typical household might run one load a day, and having it take a couple hours isn't going to be nearly as much of a burden on the user, as it would be for a commercial dishwasher. You can run that one load after you've finished dinner, and don't need the dishes until the next day anyway. The space it occupies, and the ability to operate it on a smaller electric service and water infrastructure, is what matters more to a residential dishwasher. Which is why it has the advantage to be mounted under the counter, rather than at counter-top level. And which is why run time is much longer, than it is for its commercial counterpart.
 
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