Grizzly G9983 User manual

15" OPEN-END
WIDE-BELT SANDER
MODEL G9983
INSTRUCTION MANUAL
COPYRIGHT © OCTOBER, 2002 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
PRINTED IN TAIWAN

WARNING
Some dust created by power sanding, sawing, grind-
ing, drilling, and other construction activities contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement, and
other masonry products.
• Arsenic and chromium from chemically treated
lumber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to fil-
ter out microscopic particles.

Table Of Contents PAGE
1. SAFETY
SAFETY RULES FOR POWER TOOLS ..........................................................................................2-3
SAFETY RULES FOR THE WIDE BELT SANDER ............................................................................4
2. INTRODUCTION ........................................................................................................................................5
3. CIRCUIT REQUIREMENTS ......................................................................................................................6
220V SINGLE-PHASE..........................................................................................................................6
GROUNDING ......................................................................................................................................7
EXTENSION CORDS ..........................................................................................................................7
WIRING ................................................................................................................................................7
4. MACHINE FEATURES................................................................................................................................8
EXTERNAL FEATURES ......................................................................................................................8
CONTROL PANEL ..............................................................................................................................8
ACCESS DOORS ................................................................................................................................9
5. SET UP......................................................................................................................................................10
UNPACKING ......................................................................................................................................10
PIECE INVENTORY ..........................................................................................................................10
HARDWARE RECOGNITION CHART ..............................................................................................11
CLEAN UP..........................................................................................................................................12
SITE CONSIDERATIONS ..................................................................................................................12
BEGINNING ASSEMBLY ..................................................................................................................13
HANDWHEEL HANDLE ....................................................................................................................13
PLATEN..............................................................................................................................................14
AIR HOSE ..........................................................................................................................................15
SANDING BELT ................................................................................................................................15
SANDING BELT TENSION ................................................................................................................16
PRESSURE ROLLERS ......................................................................................................................16
DUST COLLECTION..........................................................................................................................17
TEST RUN ....................................................................................................................................17-18
RECOMMENDED ADJUSTMENTS ..................................................................................................18
6. OPERATIONS ..........................................................................................................................................19
BEFORE STARTING..........................................................................................................................19
CHOOSING SANDPAPER ................................................................................................................19
CONVEYOR HEIGHT ........................................................................................................................20
FEED BELT SPEED ..........................................................................................................................20
LOAD METER ....................................................................................................................................21
OPERATION ......................................................................................................................................21
PLATEN DEPTH ................................................................................................................................22
CLEANING PADS ..............................................................................................................................22
7. MAINTENANCE ........................................................................................................................................23
GENERAL ..........................................................................................................................................23
LUBRICATION ..................................................................................................................................23
CLEANING SANDING BELTS ..........................................................................................................23
EMPTYING FILTERS ........................................................................................................................23
MAINTENANCE LOG ........................................................................................................................24
8. SERVICE ADJUSTMENTS ......................................................................................................................25
OSCILLATION TIMING ................................................................................................................25-26
OSCILLATION SPEED ......................................................................................................................26
OSCILLATION RETURN....................................................................................................................27
LIMIT SWITCHES ..............................................................................................................................27
PRESSURE ROLLER DEPTH ..........................................................................................................28
PRESSURE ROLLER TENSION ......................................................................................................29
FEED BELT TENSION ......................................................................................................................30
FEED BELT TRACKING ....................................................................................................................30
V-BELT TENSION ..............................................................................................................................31
REPLACING V-BELTS..................................................................................................................31-32
PLATEN GRAPHITE ..........................................................................................................................33
AIR SYSTEM......................................................................................................................................33
REPLACING BRAKES ......................................................................................................................34
SERVICE LOG ..................................................................................................................................35
9. CLOSURE ................................................................................................................................................36
DATA SHEET ........................................................................................................................................................37
AIR SYSTEM..........................................................................................................................................................38
WIRING DIAGRAM ..........................................................................................................................................39-41
PARTS BREAKDOWN ....................................................................................................................................42-51
TROUBLESHOOTING......................................................................................................................................52-53
WARRANTY AND RETURNS................................................................................................................................54

5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept at a safe distance from work area.
6. MAKE WORKSHOP CHILD PROOF with
padlocks, master switches, or by removing
starter keys.
7. NEVER FORCE TOOL. It will do the job
better and safer at the rate for which it was
designed.
8. USE RIGHT TOOL. Do not force tool or
attachment to do a job for which it was not
designed.
1. KEEP GUARDS IN PLACE and in working
order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are
removed from tool before turning on.
3. KEEP WORK AREA CLEAN. Cluttered
areas and benches invite accidents.
4. NEVER USE IN DANGEROUS ENVI-
RONMENT. Do not use power tools in
damp or wet locations, or where any flam-
mable or noxious fumes may exist. Keep
work area well lighted.
-2- G9983 15" Open-End Wide-Belt Sander
Safety Instructions For Power Tools
SECTION 1: SAFETY
For Your Own Safety Read Instruction
Manual Before Operating This Equipment
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
This symbol is used to alert the user to useful information about
proper operation of the equipment.
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words which are intended to convey the level
of importance of the safety messages. The progression of symbols is described below.
Remember that safety messages by themselves do not eliminate danger and are not a substi-
tute for proper accident prevention measures.
NOTICE

G9983 15" Open-End Wide-Belt Sander -3-
9. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good condi-
tion. Conductor size should be in accor-
dance with the chart below. The amperage
rating should be listed on the motor or tool
nameplate. An undersized cord will cause
a drop in line voltage resulting in loss of
power and overheating. Your extension
cord must also contain a ground wire and
plug pin. Always repair or replace exten-
sion cords if they become damaged.
Minimum Gauge for Extension Cords
10. WEAR PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get
caught in moving parts. Non-slip footwear
is recommended. Wear protective hair cov-
ering to contain long hair.
11. ALWAYS USE SAFETY GLASSES. Also
use face or dust mask if cutting operation
is dusty. Everyday eyeglasses only have
impact resistant lenses, they are NOT
safety glasses.
12. SECURE WORK. Use clamps or a vise to
hold work when practical. It’s safer than
using your hand and frees both hands to
operate tool.
13. NEVER OVERREACH. Keep proper foot-
ing and balance at all times.
LENGTH
AMP RATING 25ft 50ft 100ft
0-6 18 16 16
7-10 18 16 14
11-12 16 16 14
13-16 14 12 12
17-20 12 12 10
21-30 10 10 No
Safety Instructions For Power Tools
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubri-
cating and changing accessories.
15. DISCONNECT TOOLS before servicing
and changing accessories, such as blades,
bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTION-
AL STARTING. Make sure switch is in off
position before plugging in. Also, the mag-
netic switch on this machine may start if the
switch gets bumped hard enough.
17. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recom-
mended accessories. The use of improper
accessories may cause risk of injury.
18. CHECK DAMAGED PARTS. Before fur-
ther use of the tool, a guard or other part
that is damaged should be carefully
checked to determine that it will operate
properly and perform its intended function.
Check for alignment of moving parts, bind-
ing of moving parts, breakage of parts,
mounting, and any other conditions that
may affect its operation. A guard or other
part that is damaged should be properly
repaired or replaced.
19. NEVER LEAVE TOOL RUNNING UNAT-
TENDED. TURN POWER OFF. Do not
leave tool until it comes to a complete stop.
20. NEVER USE UNDER THE INFLUENCE of
alcohol or drugs, or when tired.
21.NEVER ALLOW UNSUPERVISED OR
UNTRAINED PERSONNEL TO OPER-
ATE THE MACHINE. Make sure any
instructions you give in regards to the oper-
ation of the machine are approved, correct,
safe, and clearly understood.

-4- G9983 15" Open-End Wide-Belt Sander
Additional Safety Instructions
For The Wide-Belt Sander
•DO NOT allow anyone to stand at the out-
feed end when feeding your stock.
•DO NOT jam workpiece into the machine
during operation. Firmly grasp the work-
piece in both hands and ease it into the
machine using light pressure.
•DO NOT wear loose clothing while operat-
ing this machine. Roll up or button sleeves
at the cuff.
•DO NOT sand any stock thinner than 1⁄8''.
DO NOT sand stock shorter than 9''
•DO NOT attempt to sand thin stock by
using a “dummy” board under your work-
piece.
•DO NOT place hands near, or in contact
with, sanding belts during operation.
•DO NOT allow fingers to get pinched
between board and conveyor belt during
operation. This may pull the operator’s
hand into the machine and cause serious
injury or death!
•ALWAYS WEAR A DUST MASK in addi-
tion to using a dust collector. This machine
produces wood dust that may cause aller-
gic reactions or respiratory problems.
•NEVER leave the machine running unat-
tended.
•NEVER operate the sander without an
adequate dust collection system in place
and operating correctly.
•NEVER operate sander with the access
doors open.
•ANY PROBLEM, with the exception of
conveyor belt tracking, that is concerned
at all with any moving parts or accessories
must be investigated and corrected with
the power disconnected and after all mov-
ing parts have come to a complete stop.
Never attempt to adjust conveyor belt
tracking when the sanding belts are
engaged.
•REPLACE sanding belt when it becomes
worn.
•ALWAYS inspect board stock for nails,
staples, knots, and other imperfections
that could be dislodged and thrown from
the machine during sanding operations.
•MAKE SURE all operators have read and
understand this manual before allowing
them to use the sander. This includes
employees, students and family!
Operating this equipment has the potential
for creating flying debris which can cause
eye injury. Always wear safety glasses or
goggles when operating equipment.
Everyday glasses or reading glasses only
have impact resistant lenses, they are not
safety glasses. Be certain the safety glass-
es you wear meet the appropriate standards
of the American National Standards
Institute (ANSI).
As with all power tools, there is danger
associated with Wide-Belt Sanders.
Accidents are frequently caused by lack of
familiarity or failure to pay attention. Use
this tool with respect and caution to lessen
the possibility of operator injury. If normal
safety precautions are overlooked or
ignored, serious personal injury may occur.

G9983 15" Open-End Wide-Belt Sander -5-
SECTION 2: INTRODUCTION
We are also pleased to provide this manual with
the Model G9983. It was written to guide you
through assembly, review safety considerations,
and cover general operating procedures. It repre-
sents our effort to produce the best documenta-
tion possible. If you have any comments regard-
ing this manual, please write to us at the address
below:
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Most important, we stand behind our machines. If
you have any service questions or parts requests,
please call or write us at the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Web Site: http://www.grizzly.com
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G9983 as supplied when the manual was pre-
pared. However, owing to Grizzly’s policy of con-
tinuous improvement, changes may be made at
any time with no obligation on the part of Grizzly.
For your convenience, we always keep current
Grizzly manuals available on our website at
www.grizzly.com. Any updates to your machine
will be reflected in these manuals as soon as they
are complete.
We are proud to offer the Grizzly Model G9983
Wide-belt Sander. Your machine is part of a
growing Grizzly family of fine woodworking
machinery. When used according to the guide-
lines set forth in this manual, you can expect
years of trouble-free, enjoyable operation and
proof of Grizzly’s commitment to customer satis-
faction.
With its 15" open end, the Model G9983 has the
capability to sand a 30" wide workpiece in two
passes. This machine also features a 5 HP sand-
ing belt motor and a 1⁄4HP feed motor, indepen-
dent conveyor and sanding belt motor control,
pneumatic belt tensioning and tracking, two rubber
rollers, a load meter, a safety shut-off bar, and a 5"
dust port.
Read the manual before
assembly and operation.
Become familiar with
the machine and its
operation before begin-
ning any work. Serious
personal injury may
result if safety or opera-
tional information is not
understood or followed.

-6- G9983 15" Open-End Wide-Belt Sander
SECTION 3: CIRCUIT REQUIREMENTS
220V Single-Phase
The Model G9983 features a 5 HP, 220V single-
phase motor. This motor will safely draw about 30
amps under load. The Model G9983 also features
a 1⁄4HP feed motor that draws approximately 1.8
amps under load. Total amperage draw for this
machine is approximately 32 amps under load.
Use a 35 amp circuit breaker for the Model
G9983. Make sure the wiring in your circuit is
rated to handle the amperage draw from your
machine. If frequent circuit failure occurs when
using the sander, contact our Service
Department. The sander must be connected to its
own dedicated circuit and should not share a cir-
cuit with any other machine. A standard 2-pole
breaker is necessary for use with the sander.
We recommend using a NEMA-style 6-50 plug
and outlet (similar to the one shown in Figure 1)
for the Model G9983. You may also “hard-wire”
the sander directly to your panel, provided you
place a disconnect near the machine. Check the
electrical codes in your area for specifics on
wiring requirements.
Figure 1. Plug configuration for 220V, single-
phase 6-50 plug and outlet.

G9983 15" Open-End Wide-Belt Sander -7-
The Model G9983 comes prewired for 220 volt
operation. Wiring diagrams are provided at the
back of this manual should it be necessary to
repair or revise the wiring. Always consult a qual-
ified electrician when doing any electrical work on
this equipment.
Wiring
We have covered some basic electrical
requirements for the safe operation of your
Sander. These requirements are not neces-
sarily comprehensive. You must be sure
that your particular electrical configuration
complies with local and state codes.
Ensure compliance by checking with your
local municipality or a licensed electrician.
Extension Cords
We do not recommend the use of extension
cords on 220V equipment. It is much better to
arrange the placement of your equipment and the
installed wiring to eliminate the need for exten-
sion cords.
Grounding
In the event of an electrical short, grounding
reduces the risk of electric shock by providing a
path of least resistance to disperse electric cur-
rent. This tool is equipped with an electric cord
that has an equipment-grounding conductor
which must be properly connected to a grounding
plug. The plug must be plugged into a matching
outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
Improper connections of the electrical-grounding
conductor can result in the risk of electric shock.
The conductor with green or green and yellow
striped insulation is the electrical-grounding con-
ductor. If repair or replacement of the electric
cord or plug is necessary, do not connect the
equipment grounding conductor to a live terminal.
This equipment must be
grounded. Verify that any
existing electrical outlet
and circuit you intend to
plug into is actually
grounded. Under no cir-
cumstances should the
grounding pin from any
three-pronged plug be
removed. Serious injury
may occur.

-8- G9983 15" Open-End Wide-Belt Sander
SECTION 4: MACHINE FEATURES
External Features
To help you understand the set up and operation
instructions, we recommend that you become
familiar with the basic features of your new
sander.
Please match up the list below with the letters in
Figure 2 to identify the external sander compo-
nents.
A. Control Panel
B. Table Extension
C. Conveyor Height Handwheel
D. Conveyor Height Gauge
E. Dust Port
F. Load Meter
G. Emergency Stop Bar
H. Pressure Regulator
B
A
C
D
F
G
H
E
Figure 2. These are the basic external
components of the sander.
Control Panel
The control panel houses the main power switch,
the feed belt ON/OFF buttons and the sanding
belt ON/OFF buttons. Please refer to Figure 3 to
identify these controls.
A. Main Power ON / Emergency STOP switch.
B. Sanding Belt OFF button.
C. Sanding Belt ON button.
D. Feed Belt OFF button.
E. Feed Belt ON button.
F. Power Indicator Light
Figure 3. These are the main power controls.
ADE
BCF

G9983 15" Open-End Wide-Belt Sander -9-
Access Doors
There are access doors located on each side of
the sander. Throughout the manual, we refer to
these doors as the “left-hand access door” and
the “right-hand access door.” These terms are
referenced as if you are facing the front of the
machine.
Figure 4 shows the layout behind the left-hand
access door.
A. Limit Switch
B. Sanding Belt Tension Switch
C. Platen Adjustment Knob
Figure 4. These items are behind the
left-hand access door.
Figure 5 shows the layout behind the right-hand
access door.
A. Oscillating Roller
B. Oscillation Air Filter
C. Limit Switch
D. Oscillation Return Valve
E. Oscillation Speed Valve
F. Oscillation Timing Knob
A
B
C
Figure 5. These items are behind the
right-hand access door.
A
B
C
D
EF

Unpacking
The Model G9983 Wide-belt Sander is shipped
from the manufacturer in a carefully packed car-
ton. If you discover your machine is damaged
after you have signed for delivery, and the truck
and driver are gone, you will need to file a freight
claim with the carrier. Save the containers and all
packing materials for possible inspection by the
carrier or its agent. Without the packing materials,
filing a freight claim can be difficult. If you need
assistance determining whether you need to file a
freight claim, or with the procedure to file one,
please contact our Customer Service.
Piece Inventory
After all the parts have been removed from the
carton, you should have:
•Sanding Unit
•Tool Box
•Combo Wrench 8/10MM
•Combo Wrench 11/13MM
•Combo Wrench 12/14MM
•Combo Wrench 17/19MM
•Combo Box-Wrench 30/37MM
•Phillips Screwdriver
•Hex Wrench Set
•Platen Puller
•Platen
•Door Handle (2)
•Handwheel Handle
•Sanding Belt #180
•Sanding Belt #240
In the event that any non-proprietary parts are
missing (e.g. a nut or a washer), we would be
glad to replace them, or for the sake of expedien-
cy, replacements can be obtained at your local
hardware store. Loose parts in the sander crate
(not including hardware) are shown in Figure 6.
When you are completely satisfied with the con-
dition of your shipment, you should inventory its
parts.
NOTICE
A full parts list and breakdown can be found
toward the end of this manual. For easier
assembly, or to identify missing parts,
please refer to the detailed illustrations at
the end of the manual.
The Model G9983 is a
heavy machine—
approx. 1000 lb. DO
NOT over-exert yourself
while unpacking or
moving your machine.
You will need assis-
tance and power equip-
ment. Serious personal
injury may occur if safe
moving methods are not
followed.
Figure 6. Loose parts (not including hardware)
for the Model G9983.
-10- G9983 15" Open-End Wide-Belt Sander
SECTION 5: SET UP

G9983 15" Open-End Wide-Belt Sander -11-
5mm
10mm
15mm
20mm
25mm
30mm
35mm
40mm
45mm
50mm
55mm
60mm
65mm
70mm
75mm
Washer
Lock
Washer
Hex
Nut
Wing
Nut
Phillips
Head
Sheet
Metal
Screw
Setscrew
Phillips
Head
Screw
Thumb
Screw Slotted
Screw
Countersunk
Phillips
Head
Screw
Cap
Screw
Carriage
Bolt
Hex
Head
Bolt
Button
Head
Screw
Flange
Bolt
Phillips
Head
Hex
Bolt
Lock
Nut
5⁄16''
1⁄4''
3⁄8''
1⁄2''
5⁄8''
7⁄16''
9⁄16''
3⁄4''
7⁄8''
1''
11⁄4''
11⁄2''
13⁄4''
2
21⁄4''
21⁄2''
23⁄4''
3
LINES ARE 1MM APART
LINES ARE 1⁄16'' INCH APART
5⁄8''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
9⁄16''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
1⁄2''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
12mm
W
A
S
H
E
R
D
I
A
M
E
T
E
R
10mm
W
A
S
H
E
R
D
I
A
M
E
T
E
R
7⁄16''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
8mm
W
A
S
H
E
R
D
I
A
M
E
T
E
R
3⁄8''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
5⁄16''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
1⁄4''
W
A
S
H
E
R
D
I
A
M
E
T
E
R
#10
W
A
S
H
E
R
D
I
A
M
E
T
E
R
4mm
W
A
S
H
E
R
D
I
A
M
E
T
E
R
6mm
W
A
S
H
E
R
D
I
A
M
E
T
E
R
WASHERS ARE MEASURED BY THE INSIDE DIAMETER
MEASURE BOLT DIAMETER BY PLACING INSIDE CIRCLE
#10
1⁄4''
5⁄16''
3⁄8''
7⁄16''
1⁄2''
5⁄8''
4mm
6mm
8mm
10mm
12mm
16mm
Hardware Recognition Chart
Use this chart to match up hardware
pieces during the assembly process!

-12- G9983 15" Open-End Wide-Belt Sander
Site Considerations
FLOOR LOAD
Your new wide-belt sander represents a large
weight load in a moderate sized footprint. Most
shop floors will be adequate for the weight of the
wide-belt sander; however, some floors may
require additional support. Contact an architect or
structural engineer if you have any question
about the ability of your floor to handle the weight.
WORKING CLEARANCES
Working clearances can be thought of as the dis-
tances between machines and obstacles that
allow safe operation of every machine without
limitation. Consider existing and anticipated
machine needs, size of material to be processed
through each machine, and space for auxiliary
stands and/or work tables. Also consider the rel-
ative position of each machine to one another for
efficient material handling. Be sure to allow your-
self sufficient room to safely run your machines in
any foreseeable operation.
LIGHTING AND OUTLETS
Lighting should be bright enough to eliminate
shadow and prevent eye strain. Electrical circuits
should be dedicated or large enough to handle
combined motor amp loads. Outlets should be
located near each machine so power or exten-
sion cords are not obstructing high-traffic areas.
Be sure to observe local electrical codes for prop-
er installation of new lighting, outlets or circuits.
Make your shop “child
safe.” Ensure that your
workplace is inaccessible to
children by closing and
locking all entrances when
you are away. Never allow
visitors in your shop when
assembling, adjusting or
operating equipment.
Clean Up
The unpainted surfaces are coated with a waxy
oil to protect them from corrosion during ship-
ment. Remove this protective coating with a sol-
vent cleaner or citrus-based degreaser such as
Grizzly’s G7895 Degreaser. To clean thoroughly,
some parts may need to be removed. For opti-
mum performance from your machine, make
sure you clean all moving parts or sliding
contact surfaces that are coated. Avoid chlo-
rine-based solvents as they may damage painted
surfaces should they come in contact. Always fol-
low the manufacturer’s instructions when using
any type of cleaning product.
Do not use gasoline or
other petroleum-based
solvents to clean with.
They have low flash
points which make them
extremely flammable. A
risk of explosion and
burning exists if these
products are used.
Do not smoke while using
solvents. A risk of explo-
sion or fire exists and may
result in serious personal
injury.
Many of the solvents
commonly used to clean
machinery can be toxic
when inhaled or ingest-
ed. Always work in well-
ventilated areas far from
potential ignition sources
when dealing with sol-
vents. Use care when dis-
posing of waste rags and
towels to be sure they do
not create fire or environ-
mental hazards.

G9983 15" Open-End Wide-Belt Sander -13-
Beginning Assembly
Most of your new wide-belt sander has been
assembled at the factory, but some setup is
required after delivery. We have organized the
setup process into steps. Please make sure the
sander is placed in its final position in your shop
and follow along in the order presented in this
section.
Keep loose clothing out
of the way of machinery
and keep hair pulled
back.
Wear safety glasses dur-
ing the entire setup
process. Failure to com-
ply may result in serious
personal injury.
Disconnect power to the
machine when perform-
ing any setup or assem-
bly. Failure to do this
may result in serious
personal injury.
Some metal parts may
have sharp edges on
them after they are
formed. Please examine
the edges of all metal
parts before handling
them. Failure to do so
could result in injury.
NOTICE
The waxy grease must be completely
cleaned from the table column for smooth
table height adjustments.
Handwheel Handle
To install the handwheel handle:
1. Thread the handle into the handwheel as
shown in Figure 7.
2. After handle is completely threaded down,
tighten the jamnut so the handle will not
come loose. Make sure to leave the plastic
sleeve loose enough to rotate when you
crank the handwheel.
Figure 7. Install handle onto handwheel.

-14- G9983 15" Open-End Wide-Belt Sander
Platen
The housing for the platen can be accessed by
opening the door on the left-hand side of the
machine.
A graphite sheet is mounted on the platen. Before
installing, make sure that the graphite sheet is
mounted on the left-hand side of the platen, as it
will be inserted. Figure 8 shows the platen being
installed correctly.
The direction of the graphite sheet is important
because it must wrap around the platen in the
same direction as the sanding belt rotates. If not,
the sanding belt will unwrap the graphite sheet,
exposing the sanding belt to the metal body of the
platen. Note: the graphite sheet on the platen is
considered a “consumable” item, similar to the
sanding belts, and normal wear and tear from
machine operation is not covered under warran-
ty. For additional information on the platen, turn to
page 33.
To insert the platen:
1. Line up the platen dovetail with the housing
so it is positioned as described above.
2. Slide the platen into the housing as far as it
can go.
Figure 8. Install the platen with the graphite
sheet on the left-hand side.
Figure 9. Use this knob to raise/lower the platen.
3. Place a straightedge across both lower belt
rollers and rotate the adjustment knob until
the platen barely touches the straightedge.
The platen should now be set even with the
belt rollers.
The platen must now be set even with the sand-
ing rollers.
To set the platen even with the belt rollers:
1. Lower the conveyor table as far as it will go.
2. Open the access door on the left-hand side
and locate the platen adjustment knob
shown in Figure 9.
Graphite Sheet

G9983 15" Open-End Wide-Belt Sander -15-
Air Hose
Figure 10. Secure air hose with a hose clamp.
The air hose connection is located at the regula-
tor on the front of the machine.
To connect the air hose:
1. Fit the hose over the regulator nozzle.
2. Secure the hose with a hose clamp as shown
in Figure 10 and turn on your air compres-
sor.
3. Regulate the air pressure to 75 PSI. This
is the normal operating pressure for the
Model G9983.
NOTICE
DO NOT exceed 75 lb. of air pressure.
Damage to the machine components may
result.
NOTICE
The main shut off valve should remain
closed until air pressure is needed. This will
reduce wear and tear on the air system com-
ponents.
Figure 11. Place belt over the three belt rollers
to install. Make sure arrows on inside of belt
point in the direction of rotation.
Sanding Belt
The Model G9983 is designed for 16" x 48" sand-
ing belts.
To install a sanding belt:
1. Open the left-hand side door for access.
2. Make sure the greasy protective coating has
been cleaned from the metal belt roller
before installing sanding belt.
3. Fit the sanding belt completely over the three
sanding rollers as shown in Figure 11. The
belt will move counter-clockwise during rota-
tion—make sure that the arrows on the
inside of the belt point in the direction of rota-
tion.

-16- G9983 15" Open-End Wide-Belt Sander
Pressure Rollers
Always keep the pressure rollers set below
the level of the sanding roller. If the pres-
sure rollers are even, or higher than the
sanding roller, the wood WILL be propelled
from the sander at a high rate of speed.
This situation could cause serious person-
al injury.
The pressure rollers have been set at the factory,
but for increased personal safety, you should ver-
ify that they are below the sanding belt.
To check the feed pressure:
1. Disconnect the sander from the power
source!
2. Place a piece of scrap wood of uniform thick-
ness across the conveyor so it spans both
front and rear pressure rollers at the same
time.
3. Make sure the platen is even with the sand-
ing belt rollers.
4. With the air pressure connected, the sanding
belt installed, and the belt tension switch ON,
slowly raise the conveyor and verify that the
board touches both pressure rollers before it
touches the sanding belt.
If the board does not touch both pressure
rollers before it touches the sanding belt,
then the pressure rollers must be adjust-
ed before operation. See Section 8:
Service Adjustments for step-by-step
instructions on how to do this.
Sanding Belt Tension
Figure 12. This is the belt tension switch.
The sanding belt tension is controlled by a switch
located inside the upper portion of the machine
(see Figure 12). To locate it, open the access
door on the left-hand side of the sander.
To Tighten Belt Tension:
Flip the switch up. The vertical cylinder will auto-
matically tighten the top roller to the correct ten-
sion.
To Loosen Belt Tension:
Flip the switch down. The vertical cylinder will
automatically loosen the belt tension for belt
removal.
NOTICE
The belt tension switch is part of the air
control system. This means the machine
must have air pressure for the switch to
work correctly.
NOTICE
Always tighten belt before starting sander!

G9983 15" Open-End Wide-Belt Sander -17-
Dust Collection
The dust collection port is located on top of the
sander and measures 5" in diameter. It will be
necessary to attach a 5" dust collection pipe over
this port before operation. If you have rigid ducts
in your dust collection system, we recommend
that you connect the ducts to your sander with
flexible hose. The flex-hose easily attaches with a
5" hose clamp and it absorbs any movement that
may occur during operation. Please refer to the
Grizzly catalog for current price and ordering
information.
Your dust collector must be able to move 800-
1200 CFM at the Wide-belt Sander. If you have
a remotely located dust collector, or if you are
operating more than one machine at a time,
ensure that your dust collector has the capacity
and power to meet this requirement. A fine layer
of dust may be present on your stock as it comes
out of the sander. This is normal.
Always wear a dust mask
in addition to using a
dust collector. Dust
masks filter out the
smaller particles of dust
that dust collectors can-
not trap.
DO NOT operate the Model G9983 without an
adequate dust collection system. This
machine creates substantial amounts of
wood dust while in operation. Failure to use
a dust collection system may result in short
and long-term respiratory illness.
Test Run
Once the assembly is complete and the adjust-
ments are done to your satisfaction, you are
ready to test run the sander.
Before you test run your machine:
1. Read back through Section 1: Safety
Instructions, Section 4: Assembly, and the
previous instructions in this section to make
sure that all precautions have been taken for
safe operation.
2. Make sure the machine is connected to an
air compressor and the pressure gauge on
the sander reads 75 PSI.
3. Make sure that any tools or foreign objects
have been removed from the machine.
4. Last but not least, make sure the wiring is
correct. Did you follow the instructions from
Section 2: Circuit Requirements? If you are
not confident with the wiring, go back and
double check that all precautions have been
taken to ensure safety to the operator and
the circuit. When you are confident, connect
the machine to the power source. The power
indication light on the control panel should
light up.
To test run the sander:
1. Turn on the power supply at the main panel.
DO NOT attempt to investigate or adjust any
features of the machine while it is running.
Wait until the machine is turned off,
unplugged and all working parts have come
to a rest before you do anything! Failure to
do so could result in severe personal injury.

-18- G9983 15" Open-End Wide-Belt Sander
Long term exposure to
this machine during
operation may cause
hearing loss. Wear
approved hearing pro-
tection to minimize this
risk!
Recommended
Adjustments
2. Start both the sanding belt and the feed belt,
making sure your finger is poised over the
STOP button, just in case there is a problem.
The wide-belt sander should run smoothly,
with little or no vibration or abnormal rubbing
noises. It is normal, however, for the air oper-
ated tracking to make a rhythmic back and
forth noise.
Strange or unnatural noises should be investigat-
ed and corrected before operating the machine
further. To avoid injury or damage to the
machine, DO NOT attempt to make adjustments
to the machine without turning it off and unplug-
ging it from its power source.
If noises occur that cannot be found by visual
inspection, feel free to contact our Service
Department for help.
For your convenience, the adjustments listed
below have been performed at the factory and no
further setup is required to operate your machine.
However, because of the many variables
involved with shipping, we recommend that you
at least check the following adjustments to
ensure the best possible results from your new
machine.
All of these adjustments are covered in step-by-
step detail in Section 8: Service Adjustments.
Recommended adjustment checklist:
•Pressure Rollers
•Oscillation Timing
•Oscillation Speed
•Oscillation Return
•Limit Switch Position
•Feed Belt Tension
•Feed Belt Tracking
•V-Belt Tension
Disconnect power to the
machine when perform-
ing any adjustments.
Failure to do this may
result in serious person-
al injury.