Product Manual

CHAPTER IV
Mechanical Considerations
Enclosures and Environment
Open Drip Proof (ODP) motors have venting
in the end frame and/or main frame, situated
to
prevent drops of liquid from falling into the
motor within a 15° angle from vertical. These
motors are designed for use in areas that
are reasonably dry, clean, well-ventilated, and
usually indoors. If installed outdoors, ODP
motors should be protected with a cover that
does not restrict air flow.
Totally Enclosed Non-Ventilated (TENV) motors have
no vent openings. They are tightly enclosed to prevent the
free exchange of air, but are not air tight. TENV motors have no
cooling fan and rely on convection for cooling. They are suitable for use
where exposed to dirt or dampness, but not for hazardous locations or
applications having frequent hosedowns.
Totally Enclosed Fan Cooled (TEFC) motors are
the same as TENV except they have an external
fan as an integral part of the motor to provide
cooling by blowing air over the outside frame.
Totally Enclosed Air Over motors are
specifically designed to be used within the air-
flow of the fan or blower they are driving. This provides an important
part of the motor’s cooling.
Totally Enclosed Hostile and Severe Environment motors are designed
for use in extremely moist or chemical environments, but not for
hazardous locations.
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