Generator Mounting-Two Bearing; Belt Drive; Environmental Concerns - Marathon Electric MAGNAMAX Installation, Operation And Maintenance Manual

discs are bolted to the hub. Holes are
provided in the periphery of the coupling
disc, which correspond to tapped holes in
the flywheel. The outside diameter of the
discs fits in a rabbet in the flywheel so that
concentricity is assured in all cases.
WARNING
DO NOT APPLY ANY FORCE TO THE
GENERATOR FAN FOR LIFITNG OR
FOR ROTATING THE GENERATOR
ROTOR. DISREGARDING THESE
INSTRUCTIONS MAY CAUSE
PERSONAL INJURY OR EQUIPMENT
DAMAGE
CAUTION: GRADE 8 CAPSCREWS
OR GRADE 8 PLACE-BOLTS AND
HARDENED WASHERS ARE REC-
OMMENDED TO MOUNT THE DRIVE
DISCS TO THE FLYWHEEL.DO NOT
USE HELICAL OR OTHER LOCKING
DEVICES UNLESS APPROVED.
The SAE adapter and the flywheel housing
are designed to match each other with no
further alignment necessary. Shims may be
necessary under the feet of the generator to
insure a solid mounting. See THE SERVICE
SECTION for more information.
GENERATOR MOUNTING-TWO
BEARING
Two bearing generators are provided with a
shaft extension and key way. For direct-
coupled sets the assembler furnishes a flexible
coupling which is installed between the driver
and the generator shaft.
IMPORTANT: Aligning the two machines
as accurately as possible will reduce
vibration, increase-bearing life, and insures
minimum coupling wear. It may be
necessary to shim the generator feet for
proper support and alignment. Consult the
coupling manufacturer's instructions for
alignment specifications and procedures.

BELT DRIVE

Please refer to Marathon Electric for
applications involving belt driven
installations.

ENVIRONMENTAL CONCERNS

Dirt, moisture, heat, and vibration are
enemies of electrical equipment. The
ambient temperature should not exceed the
value shown on the generator nameplate.
Generators for outdoor application should be
protected from the elements by housings
with proper openings for ventilation. This
protection should be designed to prevent the
direct contact of wind driven rain, snow, or
dust with the generator. In moist or humid
areas, such as the Tropics and marine serv-
ice, additional protection is recommended.
Although the standard windings are
humidity and moisture resistant, special
insulation and accessories such as space
heaters can increase generator life. In
extremely dirty and dusty environments a
means of providing filtered cooling air to the
generator is recommended. Please refer to
Marathon Electric for filter kits that are
available.
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