Danfoss iC7 Series Installation Manual page 9

Installation Guide | iC7 Series Liquid-cooled L Filter OF7Z5
These glycols already include corrosion inhibitors. Do not add any other inhibitor. Do not mix different glycol qualities because there can
be harmful chemical interactions.
The glycol concentration of the coolant must be 25–55% by volume, according to the specified ambient temperature. Higher
concentration reduces cooling capacity. Lower concentration results in biological growth and inadequate amount of corrosion inhibitors.
Antifreeze must be mixed with purified water.
To gain full performance of the product, the temperature of the coolant entering the system module must be a maximum of 45 °C
(113 °F). Typically, 60–70% of the power losses are dissipated in the coolant. It is recommended to equip the cooling circulation with
temperature supervision.
The minimum nominal flow rate of the coolant:
7.5 l/min (1.98 gal/min) with water

9.8 l/min (2.59 gal/min) with 30% glycol

11.3 l/min (2.99 gal/min) with 50% glycol

The liquid volume per element:
400/1000 A: 0.20 l (0.053 gal)

1640 A: 0.60 l (0.159 gal)

1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0 1 2 3 4 5
Figure 8: Pressure Drop, L Filter OF7Z5, 690 V/400 A
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l/min
Cooling Requirements
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AN447722950367en-000201 / 172K1111B | 9