Water Cooled Motor - Parker NK Series Technical Manual

3.5.2.

Water cooled motor

Danger: The cooling system has to be operational when the motor is
running or energized.
Danger: The Inlet temperature and the water flow have to be monitored
to avoid any exceeding temperature values.
Caution: When motor is not running, the cooling system has to be
stopped 10 minutes after motor shut down.
Caution: Condensation and risk of rust may occur when the
temperature gradient between the air and the water becomes
significant. Condensation is also linked to hygrometry rate.
To avoid any issue, we recommend: T > T - 2°C.
water air
The motor can be used with an ambient temperature between 27°C to
40°C with a high water temperature but with derating.
If inlet water temperature becomes higher than 25°C, derating factor
must be applied according to §3.1.2 Temperature Derating
Caution: the ambient air temperature shall not exceed 40°C in the
vicinity of the motor flange
Danger: If the water flow stops, the motor can be damaged or
destroyed causing accidents.
60 - PVD 3664_GB_NK-November 2016.Docx