Onan UF Series Instruction Manual And Parts Catalog page 35

I N S T A L L A T I O N
LOCATION. - Select a site for the generator with the following points
in mind.
1. Ventilation. - The generator will warm up and create some heat
when operating under load conditions. It is of vital
importance that this heat be dissipated by proper ventilation. If the
generator is installed in a small room or compartment, provide an
opening for entry of fresh, cool air. Provide a separate opening for
exhausting the air heated by the generator. Locate the exhaust opening
above the inlet opening, for best air circulation. Heated air is dis-
charged from the drive shaft end of the generator.
2. Convenience to Driving Power. - Locate the generator after con-
sidering the following points:
A. Driving unit location.
B. Desired direction of shaft rotation.
C . Pulley alignment, if used.
D. Shaft alignment of generator and driving unit if a flexible
coupling is used.
A. Driving unit location. - Regardless of the type of driving unit it
MUST be bolted securely to a heavy
mounting base to maintain pulley and shaft alignment.
B. Desired direction of shaft rotation. - The direction of rotation
will be determined by the
direction of rotation of the driving unit. The generator direction of
rotation is reversible and works equally well in either direction.
However the generator lead wires and blower scroll must be properly
installed for whatever direction of rotation is necessary. See wiring
diagram for proper lead connections. See paragraph on REVERSING
THE SCROLL for proper scroll installation.
C . Pulley alignment if used. - The shafts of the generator and
driving unit must be parallel and
the sides of the pulleys must be lined up. Correct belt tension must
be permanently maintained. After the pulleys are in proper align-
ment, both generator and driving unit must be bolted down to a heavy
rigid mounting base.
D. Shaft alignment. - If a flexible coupling is used, the shaft align-
ment of the generator and driving unit must
be accurately made and permanently maintained. Incorrect shaft
alignment will cause excessive wear on both generator and driving
unit and unnecessary loss of power from the driving unit.