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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


 
Alvey Washing Equipment Company 
4600 North Mason-Montgomery Road
Mason, OH 45040 
United States 
513-923-5658

Facility : Mason, OH


CONVEYOR POT, PAN, AND UTENSIL WASHING MACHINES
      Final Rinse    
      (20 psi) Conveyor Speed  
  Model Conveyor Flow Usage (Max.) Footnotes
  Number Width gpm gph (ft/min.)  

Hot Water Sanitizing Turntable Pot, Pan & Utensil Washing Machine
  TT-84 20"  5.1   308   2.9   


STATIONARY RACK POT, PAN, AND UTENSIL WASHING MACHINES
      Final Rinse    
      (20 psi) Operating Time  
  Model Rack Size Flow Usage (seconds) Footnotes
  Number Width gpm gph Wash Rinse Dwell  

Single Tank Stationary Rack - Hot Water Sanitizing
  FL-2S 36x30  9.5   81   142   30   0   
  FLC-10 27x26  6.6   66   120   30   0   
  FLC-36 34x72  10.2   122.4   180   60   30   [1]
  KS-48 61x36  9.4   109   180   60   30   
  KS-70-N 69x49  23.5   446   120   60   0   
  KS-88-N 69x65  23.5   446   120   60   0   
  SA-5A 35x25  8.3   95.7   120   30   0   
  SL-2D 27x26  13.2   145   120   30   0   [2]
  SL-2S 27x26  6.6   76   120   30   0   [3]
  SMT-88 69x65  23.5   446   120   60   0   
  
[1] Model FLC-36 may be offered in a higher than standard size that is 9 inches taller and
    different nozzle set up on spray arms. Unit tested to have 8 gpm and 53.3 ghp final
    rinse.  Wash time increased to 420 seconds (rinse and dwell remain the same).
[2] Requires 2 27" x 26" racks.
[3] Also available as corner unit installation with one door on a side.

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