Siemens SIMOTICS M-1PH8 - Page 82

Component Quality of the water used as coolant for motors with stain‐
less steel pipes + cast iron or steel jacket
Nitrate ions < 50ppm
Dissolved solids < 340ppm
Maximum particle size < 100μm
Operating pressure < max. 6bar
Pressure drop at V(N) < 1bar
Inlet temperature < 30°C
Anti-freeze protection/corrosion pro‐
tection
20 … 30%
NALCO 00GE056 inhibitor 0.2 ... 0.25%
Table 4-13 Cooling water speci󹪝cations (SH 180 to 280)
Component Quality of the water used as coolant for motors with stain‐
less steel pipes
pH value 6 ... 9
Total hardness < 170ppm
Electrical conductivity < 2000μS/cm
Chloride ions < 250ppm, can be obtained by adding deionized water.
Sulfate ions < 240ppm
Nitrate ions < 50ppm
Dissolved solids < 340ppm
Maximum particle size < 100μm
Operating pressure < max. 6bar
Pressure drop at V(N) < 1bar
Inlet temperature < 30°C
Anti-freeze protection/corrosion pro‐
tection
20 … 30%
NALCO 00GE056 inhibitor 0.2 ... 0.25%
Note
Deionized water (for Cooling water speci󹪝cations tables)
We recommend using deionized water with reduced conductivity (5 ... 10 µS/cm). If necessary,
ask your water utility to provide the values. According to 98/83/EC, drinking water may contain
up to 2500ppm of chloride!
Manufacturers of chemical additives can provide support when analyzing the water that is
available on the plant side.
Mechanical properties
4.1Cooling
1PH8 SIMOTICS M main motors
80 Con󹪝guration Manual, 12/2022, A5E51895839A