Справочник Пользователя для hussman IGFP-R3

30

The  refrigerators  should  be  operated  according  to  the 

manufacturer’s  published  engineering  specifications  for 

entering air temperatures for specific equipment applications. 

Table 1 shows the typical temperature of the air entering the 

food zone one hour before the start of defrost and one hour 

after defrost for various categories of refrigerators. Refer to 

Appendix C for Field Evaluation Guidelines.

I.  OPEN DISPLAY

  A.  Non frozen:

    1)  Meat

8°F

    )  Dairy/Deli

3°F

    3)  Produce

      a. Processed

36°F

      b. Unprocessed

45°F

  B.  Frozen

0°F

  C.  Ice Cream

-5°F

II. CLOSED DISPLAY

  A.  Non frozen:

    1)  Meat

34°F

    )  Dairy/Deli

34°F

    3)  Produce

      a. Processed

36°F

      b. Unprocessed

45°F

  B.  Frozen

0°F

  C.  Ice Cream

-5°F

       Single Deck                Multi Deck           Service Case   Reach-In 
       I. Open Display Styles                         II. Closed Display Styles

1.0  Temperature performance is critical for controlling 

bacteria growth. Therefore, the following 

recommendations are included in the standard. 

They are based on confirmed field experience 

over many years.

1.1  The installer is responsible for following the 

installation instructions and recommendations 

provided by Hussmann for the installation 

 

of each individual type refrigerator.

1.  Refrigeration piping should be sized according to 

the equipment manufacturer’s recommendations 

and installed in accordance with normal 

refrigeration practices. Refrigeration piping 

should be insulated according to Hussmann’s 

recommendations.

1.3  A clogged waste outlet blocks refrigeration. The 

installer is responsible for the proper installation 

of the system which dispenses condensate waste 

through an air gap into the building indirect waste 

system.

1.4  The installer should perform a complete start-up 

evaluation prior to the loading of food into the 

refrigerator, which includes such items as: 

a)  Initial temperature performance, Coils should 

be properly fed with a refrigerant according to 

manufacturer’s recommendations.

b)  Observation of outside influences such 

as drafts, radiant heating from the ceiling 

and from lamps. Such influence should be 

properly corrected or compensated for. 

c)  At the same time, checks should be made of 

the store dry-bulb and wet-bulb temperatures 

to ascertain that they are within the limits 

prescribed by Hussmann.

d)  Complete start-up procedures should include 

checking through a defrost to make certain 

of its adequate frequency and length without 

substantially exceeding the actual needs. 

This should include checking the electrical 

or refrigerant circuits to make sure that 

defrosts are correctly programmed for all the 

refrigerators connected to each refrigeration 

system. 

e)  Recording instruments should be used to 

check performance.

1.0  The most consistent indicator of display 

refrigerator performance is temperature of the air 

entering the product zone (see Appendix A). In 

practical use, the precise determination of return 

air temperature is extremely difficult. Readings of 

return air temperatures will be variable and results 

will be inconsistent. The product temperature 

alone is not an indicator of refrigerator 

performance.