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Options
•
Inlet Volume
Control
The Inlet Volume
Control
(IVC)
provides precise
air control
and
more
efficient
performance
for
varying
or
partial
load
applications.
Adjustable
guide
vanes
pre-spin
the
incoming
air
in
the
same
rotation
as
the wheel
to
produce
the desired volume
of
air
with
substantial
horsepower
savings.
Vanes
are
mounted
entirely
within
the inlet
cone.
The
IVC
is
available
with
a
control
handle
for
manual
operation.
Automatic
operation
is also
available
by
adding
a
pneumatic
or
electric
actuator.
The
IVC
is suitable
to
650°F for
minimally varying
application.
For
constantly varying
applications,
themaximum
temperature
is
350°F.
•
Slip
Inlet
A
rolled structural
angle ring
mounted
to
the
fan
inlet which
allows
for
ductwork
or
expansion
joints
to connect to
the
fan
inlet
by
slipping
over
it.
•
Punched
Flanged
Inlet
Formed
ring
inlet
with
a
punched
flange
for
bolted connection
of
inlet
ductwork,
expansion
joints,
inlet
damper,
or
bolt-on
inlet box.
*
Punched
Flanged
Outlet
Heavy
steel
angle
flange
welded
to
the outlet
and
punched
for
bolted connection
of
outlet
ductwork,
expansion
joints,
or
outlet
damper.
•
Inlet
Screen
Typically
used
on
open
inlet
applications
to
prevent
trash
from
entering
the
fan
or
for
personnel protection
against
the
rotating
wheel.
wire
screen
mounts
the inlet
cone or
the
inlet
vanes
furnished
with
an
Volume
Control.
*
Housing
Drain
A
1-1/2”
diameter threaded drain welded
to
the lowest
point
of
the
housing
to
prevent
water
from
building
up
in
the
fan
housing.
Available
with
or
without threaded drain
plug.
•
Shaft Seals
A
non-contact
seal which reduces
leakage
through
the
opening
in
the
housing
for
the
shaft.
Typically
used
on
high
temperature
applications
or
on
high
pressure
fans.
The
shaft
seal is made
of
compressible
gasket
material held
in
place
on
the
housing by
a
bolted steel
or
aluminum retainer
plate.
Contact
shaft
seals that
reduce
leakage
even
further
are
also
available.
•
Shaft
Cooler
Aluminum
or
stainless steel
shaft
cooling
wheel,
mounted
to
the
fan shaft
to
dissipate
heat
from
the
bearings.
It
raises the
allowable
temperature
limit
for
arrangements
1
,
3S1
,
7S1
,
8,
9S,
or
9H
fans from
300°F
to
650°F.
Adding
a
shaft
seal
in
addition
to
the
shaft
cooler extends the
limit
to
800°F.
*
Shaft
and
Bearing
Guard
Used
for
personnel protection
against
the
rotating
drive train.
The sheet
metal
guard
with
ventilation slots
fully
encloses
the
shaft
and
bearings
and encloses the
coupling
on
direct drive
fans.
For easier
lubrication,
extended
grease
fittings
are
recommended.
Shaft
and
bearing guard
is
painted
safety
yellow.
*
Inspection
Door
The
flush
mounted door is
secured
by
quick
opening
tension
clamps
or
is bolted
to
the
housing.
Door is
sealed
with
gasket
to
prevent
air leaks. Also
available
is
a
plug
type
door that is raised
4”
off
the
housing
so
it
clears
thermal insulation added
to
high
temperature
fans.
•
Extended
Grease
Fittings
Grease
fittings
allow
for easy
access
to
bearing
lubrication
points
without
removing
the
shaft
and
bearing guard.
*
Belt
Guard
Used
for
personnel protection
against
the
rotating
v-belt
drive. The sheet
metal
guard
with
ventilation slots
fully
encloses the v-belt drive. The
front
panel
of
the
guard
is
easily
removable
for
servicing
the belts and sheaves. Belt
guard
is
painted
safety
yellow.
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