Emerson WORLD CLASS 3000 Manual De Usuario

When considering the use of any glycol products in a particular application, you should review the lat-

est Material Safety Data Sheets and ensure that the use you intend can be accomplished safely. For 

Material Safety Data Sheets and other product safety information, contact the supplier nearest you. 

Before handling any other products mentioned in the text, you should obtain available product safety 

information and take necessary steps to ensure safety of use.

Risk of improper handling of glycol. Can cause environmental damage and violate national, 

regional and local laws.
When mishandled, glycol products pose a threat to the environment. Before using any glycol 

products, review the latest Material Safety Data Sheets and ensure that you can use the 

product safely.
Glycol manufacturers request that the customer read, understand and comply with the 

information on the product packaging and in the current Material Safety Data Sheets. Make 

this information available to anyone responsible for operation, maintenance and repair of the 

drycooler and related equipment.

No chemical should be used as or in a food, drug, medical device, or cosmetic, or in a product or pro-

cess in which it may contact a food, drug, medical device, or cosmetic until the user has determined 

the suitability and legality of the use. Since government regulations and use conditions are subject to 

change, it is the user's responsibility to determine that this information is appropriate and suitable 

under current, applicable laws and regulations.

Risk of using improper cooling agent. Can cause reduced cooling performance and damage to 

equipment and piping.
Proper formulations of inhibited formula ethylene glycol and propylene glycol must be used in 

the Challenger 3000 system. Automotive antifreeze is unacceptable and must NOT be used.

Typical inhibited formula ethylene glycol and propylene glycol manufacturers and suppliers are 

Union Carbide (Ucartherm) or Dow Chemical (Dowtherm SR-1, Dowfrost). These glycols are supplied 

with corrosion inhibitors and do not contain a silicone anti-leak formula. Commercial ethylene glycol, 

when pure, is generally less corrosive to the common metals of construction than water itself. Aque-

ous solutions of these glycols, however, assume the corrosivity of the water from which they are pre-

pared and may become increasingly corrosive with use if not properly inhibited.
There are two basic types of additives: corrosion inhibitors and environmental stabilizers. The corro-

sion inhibitors function by forming a surface barrier that protects the metals from attack. Environ-

mental stabilizers, while not corrosion inhibitors in the strictest sense of the word, decrease corrosion 

by stabilizing or favorably altering the overall environment. An alkaline buffer such as borax is a sim-

ple example of an environmental stabilizer since its prime purpose is to maintain an alkaline condi-

tion (pH above 7).
The percentage of glycol to water must be determined by using the lowest design outdoor temperature 

in which the system is operating. Table 16 indicates the solution freeze point at several concentra-

tion levels of ethylene glycol. Propylene glycol concentrations should be 1% higher than the ethylene 

glycol table values to find the freeze point. For example, 41% propylene glycol freezes at -10°F.