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NSF/ANSI 3
Commercial Warewashing Equipment

Racks per Hour / Dishes per Hour / Water Consumption Calculations
For informational purposes, the estimated racks per hour or dishes per hour for NSF/ANSI 3 Certified dishwashers can be calculated as follows:

Racks per Hour for Stationary Rack Dishwashers = 3600(NR) / TC

Racks per Hour for Rack Conveyor Dishwashers = (CS)(60) / RL

Dishes per Hour for Rackless Conveyor Dishwashers = (120)(CS)(CW) / PD

Water Consumption (gallons per hour) for Stationary Rack Dishwashers = (GPC)(RPH)

Water Consumption (gallons per hour) for Conveyor Dishwashers = (GPM)(60)

Where: CS = Conveyor speed measured in feet per minute
              CW = Conveyor width measured in inches
              GPC = Gallons per cycle
              GPM = Gallons per minute
              NR = Number of racks the dishwasher is designed to hold per cycle
              PD = Distance between pegs measured in inches, center to center of the peg, in the direction of conveyor travel
              RL = Length of the rack measured in feet
              RPH = Racks per hour
              TC = Total cycle time measured in seconds

The total cycle time includes wash, rinse, dwell, and load times. Load times will vary depending on the type of dishwasher. Estimated load times commonly used for specific types of dishwashers are as follows:
door type (straight thru) - 5 seconds
door type (corner) - 7 seconds
hood type - 8 seconds
front opening type - 30 seconds

Krowne Metal Corporation
100 Haul Road
Wayne, NJ 07470
United States
973-305-3300

Facility : Jordan Station, Ontario, Canada

GLASSWASHING MACHINES

GWP Glasswasher[1]
	GWP-4L
	GWP-4R
	GWP-6L
	GWP-6R
	[1] May have suffix M followed by number 1 - 99.
GWR-24 Glasswasher[1] [2]
	GWR-24
	GWR-24L
	GWR-24R
	[1] May have suffix M followed by number 1 - 99. [2] May have suffix CW or CCW.

STATIONARY RACK DISHWASHING MACHINES

			Final Rinse
			(20 psi)		Operating Time
	Model	Rack Size	Flow	Usage	(seconds)			Footnotes
	Number	Width	gpm	gph	Wash	Rinse	Dwell
Single Tank, Chemical Sanitizing Undercounter Dishwasher
	GWD-24	20x20	5.82	48.9	45	17	28	[1] [2]
	[1] May have suffix M followed by number 1 - 99. [2] Units are also approved for use as glasswashers.
Single Tank, Hot Water, Undercounter Dishwasher
	GWH-24	20x20	3.11	25.2	70	16	4	[1] [2]
	[1] May have suffix M followed by number 1 - 99. [2] Units are also approved for use as glasswashers.

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