MOTORS FOR HEAVY ELECTRICAL VEHICLES
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4.2. Liquid cooling system installation
Remove the protective covers from the cooling inlet and outlet threads (internal G 1/2") and install the
mating cooling connectors, see Figure 9. To prevent leakage, it is advisable to use a mating cooling
connector equipped with an O-ring seal and apply thread sealant (Loctite 577 or similar) in the internal
thread.
Figure 10. Position of liquid cooling inlet and outlet.
Recommended coolants are ethylene glycol based such as Antifrogen® N from Clariant or propylene glycol
based.
NOTE:
Coolants might be a toxic compound. Use correct personal safety equipment and avoid
exposure to the coolant.
Information about pressure drop as a function of flow rate and how glycol mixture affects performance is
found in the motor data sheet. The product code is visible on the rating plate, see Figure 2.
NOTE:
Ensure that the specified data on the separate rating plate, see Figure 3, is fulfilled before
operating the motor.
