Справочник Пользователя для Impulse DO4823R

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Customer Cabinet Provisions 
 

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Customer provided cabinet must adhere to the minimum requirements in ANSI/UL Std. 471 and 
ANSI/NSF Std. 7.  

 

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Among the factors that are to be taken into consideration when judging the acceptability of a 
cabinet or similar enclosure are mechanical strength, resistance to impact, moisture-absorptive 
properties, flame resistance, resistance to distortion at temperatures to which the material may 
be subjected under conditions of use, and resistance to corrosion. 

 

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Customer provided cabinet or similar enclosure shall have the strength and rigidity necessary to 
resist conditions of intended use without increasing the risk of fire or injury to persons due to total 
or partial collapse.  Cabinet or similar enclosure must be strong enough to hold weight of cabinet 
and intended product load.  Dry weight (no product in case) exceeds 500 pounds. 

  

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A nonmetallic cabinet or similar enclosure (or part of an enclosure) shall have a flame spread 
index of not more than 200 when tested in accordance with the Standard for Tests for Surface 
Burning Characteristics of Building Materials, UL 723. 

 

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The cabinet or similar enclosure shall be constructed and assembled to reduce the risk of fire 
due to the emission of molten metal, burning insulation, flaming particles, or the like, through 
openings onto flammable material, including the surface over which the refrigeration is mounted. 

 

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A sheet metal cabinet or similar enclosure is to be judged for acceptability with respect to its 

      size, shape, metal thickness. Sheet metal such as galvanized or stainless shall be 0.30 inch (22  
      gage) or greater. 
 

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Steel enclosures shall be protected against corrosion by metallic or nonmetallic coatings, such  

      as plating or painting. 
 

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The refrigeration access panel/door shall be arranged so that main power switch, refrigeration 
controller and refrigeration package are accessible without removing parts other than access 
panel/door.  

 

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A hinged or pivoted panel shall be positioned or arranged so that when it is in an open position 

      falling or swinging due to gravity or vibration will not cause injury to persons. 
 

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For electrical protection when installed in its intended manner, louvers and other openings in the 
enclosure shall be constructed and located to reduce the risk of unintentional contact with mov-
ing, live or hot parts such as fan blades and condensate trays. The minor dimension of such 
openings shall not exceed 3 inches—See Table 6.1 for Clearance from Openings. Tools are re-
quired to remove covers, panels or grilles unless interlock is provided. 

 

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Ventilation openings/louvers shall be free of sharp edges and burrs and have spaces large 
enough to allow for easy cleaning. Louvers that may be subject to splashes, spills, and overhead 
drips shall be of a drip-deflecting design. 

 

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