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LCX9000 Liquid-Cooled Drives User Manual
2-8 For more information visit: www.EatonElectrical.com
MN04005001E
January 2007
Cooling
Instead of using air for cooling, Cutler-Hammer Liquid-Cooled drives are cooled with liquid.
The liquid circulation of the drive is usually connected to a heat-exchanger (liquid-liquid/
liquid-air) which cools down the liquid circulating in the cooling elements of the drive. The
cooling agents acceptable for use are drinking water, demineralized water or a mixture
(60/40) of water and glycol. In a closed circulation system, the values in Table 2-3 are
recommended reference values. To avoid electrochemical corrosion, Eaton recommends
adding an inhibitor (e.g. Ferrolix 332/Henkel or Cortec VpCI-649) in the cooling agent.
Note:
If no heat-exchanger is used, actions must be taken to avoid electrochemical corrosion.
Specifically no brass or copper elements may be used in the liquid circulation of the drive.
Drinking Water Specification
Table 2-3 provides general guidelines for water quality.
Note: 1 mg/L = 1 ppm.
Table 2-3: Drinking Water Chemical Specification
Table 2-4: Drinking Water Quality
Recommendations — Maximum Values
ᕃ
No aggressive water allowed.
ᕄ
To avoid corrosion of piping, the sulphate content must not
exceed 150 mg/L.
Quality Unit Value Quality Unit Value
Acrylamide µg/L 0.10 Mercury µg/L 1.0
Antimony µg/L 5.0 Nickel µg/L 20
Arsenic µg/L 10 Nitrate [NO
3
]mg/L50
Benzene µg/L 1.0 Nitrate-Nitrogen [NO
3
-N] mg/L 11.0
Benzopyrene µg/L 0.010 Nitrite [NO
2
]mg/L0.5
Boron mg/L 1.0 Nitrite-Nitrogen [NO
2
-N] mg/L 0.15
Bromate µg/L 10 Bactericides µg/L 0.10
Cadmium µg/L 5.0 Bactericides, total µg/L 0.50
Chromium µg/L 50 Polynuclear aromatic
hydrocarbons
µg/L 0.10
Copper mg/L 2.0 Selenium µg/L 10
Cyanides µg/L 50 Tetrachloroethylene and
trichloroethylene total
µg/L 10
1,2-Dichloroethane µg/L 3.0 Trihalomethanes total µg/L 100
Epichlorohydrin µg/L 0.10 Vinyl chloride µg/L 0.50
Fluoride mg/L 1.5 Chlorophenols total µg/L 10
Lead µg/L 10
Quality Unit
Max.
Value
Aluminum µg/L 200
Ammonium [NH
2
]mg/L0.50
Ammonium [NH
2
-N] mg/L 0.40
Chloride
ᕃ
mg/L <100
Manganese µg/L 50
Iron µg/L <0.5
Sulphate
ᕃᕄ
mg/L 250
Sodium mg/L 200
Oxidizability [COD
Mn
-O
2
]mg/L 5.0