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Multiple

Arrangements

Arrangement

1:

Two

bearings

are

mounted

on a

pedestal

and the wheel is

overhung

to

one

side.

Often

referred

to

as a

bare

fan,

Arrangement

1

allows the

user

to

independently

mount

their

motor

alongside

the

fan

and

attach

a

v-belt

drive.

The

motor

can

also

be

independently

mounted

in

line

with

and

directly

coupled

to

the

fan shaft

with

a

flexible

steel

coupling

for

direct drive. Maximum airstream

temperature

is

800°

F.

Arrangement

3:

The

bearings

are

bracket mounted

on

each side

of

the

housing,

and the wheel is

centerhung

between

them

making

the

fan

more

compact

than

Arrangement

1.

As

a

bare

fan

arrangement,

it

allows the

user

to

independently

mount

their

motor

alongside

the

fan

and attach

a

v-belt

drive. The

motor

can

also be

independently

mounted

in

line

with

and

directly

coupled

to

the

fan shaft

with

a

flexible

steel

coupling

for

direct drive.

Since

the inlet side

bearing

is mounted

in

the

airstream,

the

maximum

temperature

is limited

to

150°F,

and

the

fan

is suitable

for

clean

air

only.

Arrangement

3S1

Same

as

Arrangement

3,

but

with

the

integral

inlet box

accessory,

which allows the

shaft

to

be extended

and

the

inlet

bearing

to

be

moved

outside

the

airstream.

With

the

bearing

outside

the

airstream,

the maximum

temperature

is increased

to 800°F,

and the

fan

is

suitable

for

dusty

or

dirty

applications.

Arrangement

4:

This is

commonly

known

as a

packaged

fan.

The

fan

wheel is mounted

directly

onto

the

motor

shaft

without

a

fan

shaft,

bearings,

v-belt

drives,

or

couplings. Large

maintenance

costs

are

eliminated,

and the

fan

is

more

compact,

allowing

it

to

fit

in

smaller

spaces.

This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

the

motor

is mounted

by

Chicago.

Maximum

temperature

is

180°F

because the

motor

shaft

is located

in

the airstream.

Arrangement

7:

An

Arrangement

3

fan

with

a

motor

pedestal

fully

attached and

welded

to

the

existing

bearing

pedestal.

The

motor

is then

factory

mounted and

directly

coupled

to

the

fan shaft

with

a

flexible

steel

coupling

for

direct

drive,

simplifying

fan

installation

at

the

job

site.

Directly

coupled

fans

are

typically

used

in

lieu

of

belt

drive

fans

when the

motor

exceeds

250

horsepower.

This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

motor

and

coupling

are

mounted

by

Chicago.

Arrangement

7S1

An

Arrangement

3S1

fan

with

a

motor

pedestal

fully

attached and welded

to

the

existing bearing

pedestal.

The

motor

is then

factory

mounted and

directly

coupled

to

the

fan shaft

with

a

flexible

steel

coupling

for

direct

drive,

simplifying

fan

installation

at

the

job

site.

Directly

coupled

fans

are

typically

used

in

lieu

of

belt drive

fans

when the

motor

exceeds

250

horsepower.

This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

motor

and

coupling

are

mounted

by

Chicago.

Arrangement

8:

An

Arrangement

1

with

a

motor

pedestal

fully

attached and welded

to

the

existing

bearing

pedestal.

The

motor

is then

factory

mounted and

directly

coupled

to

the

fan shaft

with

a

flexible

steel

coupling

for

direct

drive,

simplifying

fan

installation

at

the

job

site.

Directly

coupled

fans

are

typically

used

in

lieu

of

belt drive

fans

when the

motor

exceeds

250

horsepower.

This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

motor

and

coupling

are

mounted

by

Chicago.

Arrangement

9S:

An

Arrangement

1

belt

driven

fan

with

the

motor

mounted

on

the side

of

the

bearing

pedestal.

The

motor

shaft

is attached

to

the

fan shaft

with

v-belt drives. The

motor

mounted

onto

the

bearing

pedestal provides

a

compact

fan

with

a

smaller

footprint

that is ideal

for

smaller

spaces.

This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

the

motor

and

v-belt

drives

are

mounted

by

Chicago.

Arrangement

9H:

This

arrangement

is

used

for

larger

horsepower

motors

that

are

too

large

for

Arrangement

9S fans.

The

fan

and

motor

are

mounted

on a

structural steel channel base. This

arrangement

includes

a

factory

run

test

prior

to

shipment

if

the

motor

and v-belt drives

are

mounted

by

Chicago.

6