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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.

4