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Description
3.4 Design
Figure 3-2
Pressure losses as a result of volumetric flow
Coolant temperatures below the ambient temperature lead to increased condensation of
water. The difference between the coolant inlet temperature and ambient temperature should
therefore not exceed maximum 5 Kelvin. If the motor is out of operation for a prolonged
period of time, coolant inflow must additionally be interrupted.
The values specified for the cooling water (refer to the following table) correspond to the
requirements of closed cooling circuits. Not all of the specified concentrations will occur in
the cooling water at the same time.
Table 3- 5
Contents and chemical composition
pH value
Chloride ions
Sulfate ions
Nitrate ions
Dissolved solids
Total hardness
Electrical conductivity
Size of any particles in the coolant
Note
Storing or transporting the motor
The cooling circuit must be emptied when storing the motor, for longer periods when the
motor is out of service and when the motor is being transported.
20
Water specifications for the coolant
Value
6 ... 8
< 40 ppm
< 50 ppm
< 50 ppm
< 340 ppm
< 170 ppm
< 500 μS/cm
< 100 µm
SIMOTICS A-1FV5/1PV5 synchronous/induction motors
Operating Instructions, 03/2014, 610.45002.40
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