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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



 
Blakeslee 
1228 Capitol Drive
Addison, IL 60101 
United States 
888-656-0660 
630-532-5021

Facility : Waynesboro, GA


CONVEYOR DISHWASHING MACHINES
      Final Rinse    
      (20 psi) Conveyor Speed  
  Model Conveyor Flow Usage (Max.) Footnotes
  Number Width gpm gph (ft/min.)  

Multiple Tank Flight Conveyor, Chemical Sanitizing
  XF-EE-LT 30  2.8   166   9   [3]
  XF-EEE-LT 30  2.8   166   9   [3]
  XF-LL-LT 30  2.8   166   9   [3]
  XF-LLL-LT 30  2.8   166   9   [3]
  XF-MM-LT 30  2.8   166   9   [3]
  XF-MMM-LT 30  2.8   166   9   [3]
  XF-PEE-LT 30  2.8   166   9   [3]
  XF-PLL-LT 30  2.8   166   9   [3]
  XF-PMM-LT 30  2.8   166   9   [3]
 
[3] Chemical sanitizing dishmachines are to be installed with a chemical sanitizer feeder
    Certified under NSF Standard 29 and are Certified as Components under Standard 3; 50 ppm
    chlorine to be delivered in the recirculated pumped rinse.

Multiple Tank Flight Conveyor, Hot Water Sanitizing
  F-EE 20  4.8   288   6.6   
  F-EEE 20  4.8   288   8.2   
  F-LL 20  4.8   288   8.2   
  F-LLL 20  4.8   288   8.2   
  F-MM 20  4.8   288   8.2   
  F-MMM 20  4.8   288   8.2   
  F-PEE 20  4.8   288   6.6   
  F-PLL 20  4.8   288   8.2   
  F-PMM 20  4.8   288   8.2   
  FA-EE 20  4.8   288   6.6   
  FA-EEE 20  4.8   288   8.2   
  FA-LL 20  4.8   288   8.2   
  FA-LLL 20  4.8   288   8.2   
  FA-MM 20  4.8   288   8.2   
  FA-MMM 20  4.8   288   8.2   
  FA-PEE 20  4.8   288   6.6   
  FA-PLL 20  4.8   288   8.2   
  FA-PMM 20  4.8   288   8.2   
  XF-EE 30  2.76   166   9.1   [4]
  XF-EEE 30  2.76   166   9.1   [4]
  XF-LL 30  2.76   166   9.1   [4]
  XF-LLL 30  2.76   166   9.1   [4]
  XF-MM 30  2.76   166   9.1   [4]
  XF-MMM 30  2.76   166   9.1   [4]
  XF-PEE 30  2.76   166   9.1   [4]
  XF-PLL 30  2.76   166   9.1   [4]
  XF-PMM 30  2.76   166   9.1   [4]
 
[4] Multiple tank flight conveyors may have additional suffix LC, but do not include an
    additional power rinse tank in which case the following would apply:
    Final Rinse Flow in gallons per minute = 2.76
    Final Rinse Usage in gallons per hour = 166
    Conveyor Speed in feet per minute = 9.0

Multiple Tank Rack Conveyor, Chemical Sanitizing
  R-CC64-LT 20x20  2.2   134   7   [3]
  R-EE-LT 20x20  2.2   134   7   [3]
  R-EEE-LT 20x20  2.2   134   7   [3]
  R-LL-LT 20x20  2.2   134   7   [3]
  R-LLL-LT 20x20  2.2   134   7   [3]
  R-MM-LT 20x20  2.2   134   7   [3]
  R-MMM-LT 20x20  2.2   134   7   [3]
  R-PCC-LT 20x20  2.2   134   7   [3]
  R-PEE-LT 20x20  2.2   134   7   [3]
  R-PLL-LT 20x20  2.2   134   7   [3]
  R-PMM-LT 20x20  2.2   134   7   [3]
 
[3] Chemical sanitizing dishmachines are to be installed with a chemical sanitizer feeder
    Certified under NSF Standard 29 and are Certified as Components under Standard 3; 50 ppm
    chlorine to be delivered in the recirculated pumped rinse.

Multiple Tank Rack Conveyor, Hot Water Sanitizing
  R-CC64 20x20  4.5   270   5.6   [1] [2]
  R-EE 20x20  4.5   270   5.6   [1] [2]
  R-EEE 20x20  4.5   270   5.6   [1] [2]
  R-LL 20x20  4.5   270   5.6   [1] [2]
  R-LLL 20x20  4.5   270   5.6   [1] [2]
  R-MM 20x20  4.5   270   5.6   [1] [2]
  R-MMM 20x20  4.5   270   5.6   [1] [2]
  R-PCC 20x20  4.5   270   5.6   [1] [2]
  R-PEE 20x20  4.5   270   5.6   [1] [2]
  R-PLL 20x20  4.5   270   5.6   [1] [2]
  R-PMM 20x20  4.5   270   5.6   [1] [2]
 
[1] Prefix "RA" designates a circular rack conveyor type machine.
[2] Multiple tank rack conveyors may have additional suffix LC, but do not include an
    additional power rinse tank in which case the following would apply:
    Final Rinse Flow in gallons per minute = 2.24
    Final Rinse Usage in gallons per hour = 134
    Conveyor Speed in feet per minute = 7.0

Single Tank Flight Conveyor, Hot Water Sanitizing
  F-E 20  4.7   282   4.6   
  F-L 20  4.7   282   4.6   
  F-M 20  4.7   282   4.6   
  F-PE 20  4.7   282   4.6   
  F-PL 20  4.7   282   4.6   
  F-PM 20  4.7   282   4.6   

Single Tank Rack Conveyors, Hot Water Sanitizing
  R-E 20x20  7   420   5   
  R-L 20x20  5   300   5.5   
  R-M 20x20  5   300   5.5   
  R-PE 20x20  7   420   5   
  R-PL 20x20  5   300   5.5   
  R-PM 20x20  5   300   5.5   

NOTE: Combination multi-tank Dishwashers consisting of different size modules (or tanks)
      -C,E,K,L,M, or P- in any order, have operating capacity, conveyor speed, and final rinse
      requirements the same as shown for similar standard multi-tank Dishwashers where all
      modules (or tanks) are the same size.  Operating capacity, conveyor speed, and final
      rinse requirements are governed by the smallest (C,E,L, or M) module (or tank) in the
      combination model.  These models, not shown individually, are still considered NSF
      Listed.  Letters of model designation show tanks and their relative location used in
      this unit.
      Model designation can be shown by using letters only or by using letters with numbers.
      (Therefore, F-PLL is the same as F2-LP, etc.)
      Dishwasher models with standard tanks in excess of three, not shown on the Listing, are
      also considered NSF Listed, having final rinse requirements and conveyor speeds the same
      as similar three tank Dishwashers.
      Combination multi-tank flight-type dishwashers may have additional power rinse tank
      indicated by suffix LC.
      Optional numeric suffix indicates the length of the wash tank in inches.

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 Stationary Rack Chemical Sanitizing Door
  D-9 20x20  31.5   96.2   46   29   19   [2]
 
[2] Nonrecirculated rinse, minimum 50 ppm available chlorine.

Single Tank Stationary Rack Door, Hot Water Sanitizing
  D-8 20x20  1.3   72   49   11   0   [4]
 
[4] Acceptable as two machines in tandem with single control switch.

Undercounter Dishmachines, Hot Water Sanitizing
  UC-20B 20x20  4.1   21.68   55   15   10   
  UC-21A 20x20  4.3   21.6   105   10   5   [1] [3]
  UC-21B 20x20  4.3   21.6   105   10   5   [1] [3]
 
[1] Beginning with serial number 64900.
[3] Total water usage, per cycle, is 0.9 gallons.

NOTE: Combination multi-tank Dishwashers consisting of different size modules (or tanks)
      -C,E,L,M, or P- in any order, have operating capacity, conveyor speed, and final rinse
      requirements the same as shown for similar standard multi-tank Dishwashers where all
      modules (or tanks) are the same size.  Operating capacity, conveyor speed, and final
      rinse requirements are governed by the smallest (C,E,L, or M) module (or tank) in the
      combination model.  These models, not shown individually, are still considered NSF
      Listed.  Letters of model designation show tanks and their relative location used in
      this unit.
      Model designation can be shown by using letters only or by using letters with numbers.
      (Therefore, F-PLL is the same as F2-LP, etc.)
      Dishwasher models with standard tanks in excess of three, not shown on the Listing, are
      also considered NSF Listed, having final rinse requirements and conveyor speeds the same
      as similar three tank Dishwashers.
      Combination multi-tank flight-type dishwashers may have additional power rinse tank
      indicated by suffix LC.
      Optional numeric suffix indicates the length of the wash tank in inches.

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