Rockwell Automation 8720SM High Performance AC Induction Motors - Manual (Page 5)

Publication 8720SM-IN001A-EN-P — February 2003
8720SM High Performance AC Induction Motors 5
Before Mounting Your
Motor Before mounting your 8720SM motor, consider the following:
•
You can mount the motor horizontally or vertically with the shaft
down or up.
•
The 8720SM motors are blower cooled with air flow from the
blower end to the drive end. The air flow must be flowing in the
direction of the arrow on the motor to provide adequate cooling.
Both air inlets and outlets must be free of obstructions. Maintain a
clearance of at least 100 mm (4 in.) at the blower inlet area.
•
When mounted, the motor must not be exposed to direct splash
or spray of cutting fluids or lubricating oils.
•
Motors include a labyrinth type shaft seal with flinger, which helps
protects against splashing. However, it will not provide protection
against flooding.
•
In an environment where high humidity is present or the motor
blower inlet air is saturated with coolant mist, make sure the
motor is mounted with the feet down and the drain holes at the
bottom of the motor are open.
•
The motors are designed for the ambient temperature indicated on
the nameplate. The standard motor maximum ambient is 40° C
(104° F). Locate the motor where the ambient temperature
requirements are satisfied and where clean air has free access to
ventilating intake and outlet openings. Except for machines with a
suitable protective enclosure, the location should be clean and
dry.
IMPORTANT
The cooling system on standard 8720SM blower
cooled motors requires that clean air is forced
through ducts which are integral to the stator frame.
It is important that you keep these air passages clean
and that sufficient clearance is provided on the
motor air inlets and stator duct outlets for
unrestricted air flow.
ATTENTION
!
You must be careful to prevent debris (such as metal
shavings and conduit knockouts) from falling into
the motor while performing any installation work
around the motor. A hazard of personal injury and/or
equipment damage exists if foreign material lodges
inside the motor.