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I <br /> 1) Laundromats are successful if each washer is used four times each day. <br /> Assuming this laundry is open 14 hours per day and averages 4 uses per day per <br /> machine, on average 3-4 washers are in use at any given time. During peak <br /> times, the usage will be greater. <br /> 2) The factory programmed wash cycle is 25 minutes long. Of that 25 minutes, <br /> water is normally filling for 2.5-4.5 minutes of the cycle. Even if all the machines <br /> are being used simultaneously, it is unlikely that all of the washers will be filling <br /> simultaneously. <br /> 3) Therefore, under most conditions, washers will fill at peak GPM. <br /> Dexter Controls: <br /> 1) Under normal conditions (see industry data above), individual washers will fill <br /> very quickly, however Dexter engineered their controls to anticipate unlikely <br /> scenarios such as all washers filling at exactly the same time. To account for <br /> slower than normal fill rates, Dexter washers will operate properly, without an <br /> error code, if the desired fill level is achieved in 7 minutes. <br /> Summary: <br /> Maximum demand is 511 GPM. The flow rate of a 1 '/z" meter is 137 GPM. In the <br /> unlikely event that all the washers are started at the same time, all washers will fill in <br /> less than 4 minutes. This is easily within the 7 minutes required by the <br /> manufacturer. Therefore, a I Y2"meter is sufficient for this installation. <br /> 2f L <br />