Grundfos CMBE 3-93 Instrucciones De Instalación Y Operación página 8

5.2 Cable entries
The motor has four M20 screwed cable entries
fitted with blind plugs from the factory.
The following cable glands are included:
2 x M20 cable glands, cable diameter ∅5 mm
•
1 x M20 cable glands, cable diameter ∅7-14
•
mm.
5.3 Motor cooling
In order to ensure sufficient cooling of
the motor, the distance (D) between
the end of the fan cover and a wall or
other fixed objects must always be at
least 2 inches (50 mm) irrespective of
motor size.
Minimum distance (D) from the motor to a wall
or other fixed objects
Related information
12.1.5 Motor cooling
5.4 Outdoor installation
When installed outdoors, the motor must be
provided with a suitable cover to avoid
condensation on the electronic components.
When fitting a cover to the motor, ob-
serve the guidelines in section Motor
cooling.
The cover must be sufficiently large to ensure that
the motor is not exposed to direct sunlight, rain, or
snow. Grundfos does not supply covers.
Therefore, we recommend that you have a cover
built for the specific application. In areas with high
air humidity, we recommend enabling the built-in
standstill heating function.
8
Examples of covers (not supplied by Grundfos)
5.5 Drain holes
When the motor is installed in moist surroundings
or areas with high air humidity, the bottom drain
hole should be open.
The enclosure class of the motor will then become
lower. The open drain hole helps to prevent
condensation in the motor as it will make the
motor self-vent and allow water and humid air to
escape.
The motor has a plugged drain hole on the drive
side. The flange can be turned 90 ° to both sides
or 180 °.
Related information
D
12.1.4 Air humidity
B3 B14 B5