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Installation manual, Model g-99 air filter gage, Calibration operation service parts list – GeneralAire G-99 Air Filter Gage User Manual

Page 2: Blue, Black

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General Filters, Inc. 43800 Grand River Ave., Novi, Michigan 48375 • Toll Free (866) 476-5101

Phone: (248) 476-5100 • Fax (248) 349-2366 • www.generalaire.com

Model G-99 Air Filter Gage

Installation Manual

General Filters, Inc. 43800 Grand River Ave., Novi, Michigan 48375 • Toll Free (866) 476-5101

Phone: (248) 476-5100 • Fax (248) 349-2366 • www.generalaire.com

cAlibrAtion

operAtion

service

pArts list

Install a clean filter and run blower on highest speed.

With a small screwdriver adjust the calibration screw, on
the face of the gage, to put the pointer in the clear area
in the center of the blue "FILTER IS CLEAN" range.

As the air filter begins to clog the pointer will move up

in the gage. When the pointer moves into the black
"CHANGE FILTER" range a clean filter should be
installed.

WHEN ORDERING PARTS, REFER TO THE ABOVE LIST OF PARTS NAMES AND PARTS NUMBERS

The gage may be disassembled for service although this should rarely be required since it

contains a small filter screen to stop dust from entering the area of the vane. Remove gage
and, from the back, push white plastic clips out with a blunt tool. Remove calibration screw,
lift off clear cover and dust all parts with a clean brush. Reassemble and test that the vane
moves freely in the gage. A fresh adhesive strip may be required to reinstall.

FIL

TE

R

IS

CL

EA

N

C

H

A

N

G

E

F

IL

T

E

R

UP

DOWN

U.S.

PAT.

6190442

R

BLUE

FILT

ER

IS C

LE

AN

C

H

A

N

G

E

F

IL

T

E

R

UP

DOWN

U.S.

PAT.

6190442

R

BLACK

UP

DOWN

FI

LT

ER

IS

C

LE

A

N

C

H

A

N

G

E

F

I

L

T

E

R

G99-1 GAGE HOUSING

G99-2 GAGE COVER

G99-3 FILTER SCREEN

G99-4 VANE

G99-7 PIN

G99-12 DIAL PLATE

G99-8
RETAINER CLIP

G99-9
CALIBRATION SCREW

G99-11 FOAM ADHESIVE STRIP - NOT SHOWN

U.S. PAT. 6190442

R