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• To reduce the maintenance effort and ensure a long product lifetime we recommend
the following cooling water quality:
Hardness
mg/l (ppm) < 90
Properties
Clean & clear
PH value
7 ... 8
Particle size
µm
< 200
Chloride
mg/l
< 100
Electrical conductivity
µS/cm
≤
100
Free chloride
mg/l
< 0.3
Materials in contact with the cooling water Stainless steel, copper and cast iron
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french
degree)
5.3 Earth Connection
In order to prevent the machine from creating an electrostatic charge:
• Connect the earth connection of the machine (ECP)
If an inlet filter (IF) being installed:
• Connect the earth connection of the inlet filter (ECI) in addition to the earth con-
nection of the machine.
Earth connection of
the machine (ECP)
Earth connection of
the inlet filter (ECI)
