Aerovent IM-220 User Manual

IM-220

June 1997

General Installation, Operation and Maintenance Instructions For Aerovent Products

Shaft Seals

Teflon Wear Plate

Standard Shaft Seal

A Viton shaft seal can be added to the housing as an option
and should be specified when the fan is used for handling
dirty, wet or corrosive air. This seal is suitable for operation
up to 300°F. It should also be noted that this seal minimizes
leakage; it does not make the installation gas tight.

Check Seal & Spare
(Axial fans may not allow
room for installation of
spare seal.)

Bearing Housing

Standard High Temperature Seal

This seal is suitable for operation up to 600°F; however, like
the standard seal, it is designed to limit gas leakage but is not
gas tight.

1/8" Palseal PTFE

Sealing Gasket

or Scroll Side

Fiberfrax
(Ceramic Felt)

Scroll
Side

©2005 Aerovent

304 Stainless Steel
Retaining Disc

Lubricated Shaft Seal

For longer seal life. While not gas tight, this seal will minimize
leakage and operate in temperatures up to 300°F.

Scroll Side

45° Alemite Grease
Fitting 1/4-28
Tapered THD

1/8" Palseal

PTFE Sealing

Gasket

Check Seal

Mounting and
Retaining Plate

Teflon Wear Plate

Stuffing Box Shaft Seal

Designed for an operating temperature of up to 500°F.
A higher temperature packing is available if specified.
Three rows of permanently lubricated packing are used.
This type of arrangement will provide the best seal
against gas leakage, but is not totally gas tight.

1/8" Palseal

PTFE Sealing

Gasket

Scroll Side

Stuffing Box

Packing Gland

1/4" Garlock
Style 8922
TFE Impregnated
Packing

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