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, grind­ing, 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 fil­ter 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 ENVI­RONMENT. Do not use power tools in

damp or wet locations, or where any flam­mable 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 substi­tute 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 condi­tion. Conductor size should be in accor­dance 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 exten­sion 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 cov­ering 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 lubri­cating and changing accessories.

15. DISCONNECT TOOLS before servicing

and changing accessories, such as blades,
bits, cutters, and the like.

16. REDUCE THE RISK OF UNINTENTION­AL STARTING. Make sure switch is in off

position before plugging in. Also, the mag­netic switch on this machine may start if the
switch gets bumped hard enough.

17. USE RECOMMENDED ACCESSORIES.

Consult the owner’s manual for recom­mended 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, bind­ing 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 UNAT­TENDED. 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 OPER­ATE THE MACHINE. Make sure any

instructions you give in regards to the oper­ation 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 work­piece 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 work­piece.

• 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 aller­gic 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 mov­ing 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 glass­es 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 repre­sents our effort to produce the best documenta­tion possible. If you have any comments regard­ing 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: [e-mail]
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 pre­pared. However, owing to Grizzly’s policy of con­tinuous 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 guide­lines set forth in this manual, you can expect
years of trouble-free, enjoyable operation and
proof of Grizzly’s commitment to customer satis­faction.

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 sand­ing belt motor and a

1

⁄4 HP feed motor, indepen­dent 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 begin­ning any work. Serious
personal injury may
result if safety or opera­tional 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 single­phase motor. This motor will safely draw about 30
amps under load. The Model G9983 also features
a

1

⁄4 HP 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 cir­cuit 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 qual­ified 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 neces­sarily 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 exten­sion 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 cur­rent. 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 con­ductor. 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 cir­cumstances 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.

A

D

E

B

C

F

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

E

F

Unpacking

The Model G9983 Wide-belt Sander is shipped
from the manufacturer in a carefully packed car­ton. 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 expedien­cy, 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 con­dition 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 assis­tance and power equip­ment. 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-

Hardware Recognition Chart

Use this chart to match up hardware
pieces during the assembly process!

#

10

Lock
Nut

Wing
Nut

S

A

W

D

I

A

R

E

H

M

E

T

⁄8''

E

R

5

1

⁄4''

Thumb
Screw

Phillips
Head

5

⁄16''

3

⁄8''

7

Cap
Screw

⁄16''

Screw

Carriage
Bolt

Hex

1

⁄2''

Setscrew

5

⁄8''

Head
Bolt

Lock

Washer

MEASURE BOLT DIAMETER BY PLACING INSIDE CIRCLE

4mm

6mm

5mm

10mm

8mm

15mm
20mm

Washer

1

⁄4''

3

⁄8''

1

⁄2''

5

⁄8''

25mm

10mm

30mm
35mm
40mm
45mm

12mm

LINES ARE 1MM APART

50mm
55mm
60mm

⁄16'' INCH APART

1

65mm

16mm

70mm
75mm

LINES ARE

Countersunk
Phillips
Head
Screw

Flange
Bolt

Phillips
Head
Hex
Bolt

Hex
Nut

5

⁄16''

7

⁄16''

9

⁄16''

3

⁄4''

7

⁄8''

1''
11⁄4''

1

⁄2''

1

3

⁄4''

1
2

1

⁄4''

2

1

⁄2''

2

3

⁄4''

2
3

Slotted
Screw

A

S

H

W

D

I

A

R

9

⁄16''

M

E

T

E

R

E

Button
Head

D

I

A

A

H

S

W

R

E

M

E

T

⁄2''

E

R

1

Screw

Phillips
Head
Sheet
Metal
Screw

D

I

A

R

12mm

D

I

A

D

I

A

M

M

E

T

E

R

D

I

A

R

M

E

H

E

S

T

E

A

R

W

M

4mm

E

T

E

R

D

I

A

R

M

E

E

H

T

S

E

A

R

W

6mm

E

T

E

R

A

S

S

W

H

A

S

A

E

H

E

W

E

H

W

R

10mm

R

8mm

WASHERS ARE MEASURED BY THE INSIDE DIAMETER

D

I

A

R

W

H

S

A

M

E

T

7

⁄16''

E

R

D

I

R

A

M

E

W

H

S

E

3

T

⁄8''

E

R

D

I

A

R

M

E

E

5

T

⁄16''

E

A

R

W

D

I

A

R

M

E

H

E

1

S

⁄4''

T

A

E

R

W

D

I

R

A

E

M

H

E

S

T

A

E

R

W

#

10

E

H

S

A

-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 dis­tances 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 rel­ative position of each machine to one another for
efficient material handling. Be sure to allow your­self 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 exten­sion cords are not obstructing high-traffic areas.
Be sure to observe local electrical codes for prop­er 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 ship­ment. Remove this protective coating with a sol­vent 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 fol­low 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 explo­sion 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 ingest­ed. Always work in well­ventilated areas far from
potential ignition sources
when dealing with sol­vents. Use care when dis­posing of waste rags and
towels to be sure they do
not create fire or environ­mental 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 dur­ing the entire setup
process. Failure to com­ply may result in serious
personal injury.

Disconnect power to the
machine when perform­ing any setup or assem­bly. 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 warran­ty. 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 sand­ing 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 regula­tor 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 com­ponents.

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" sand­ing 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 rota­tion—make sure that the arrows on the
inside of the belt point in the direction of rota­tion.

-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 pres­sure 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 person­al injury.

The pressure rollers have been set at the factory,
but for increased personal safety, you should ver­ify 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 adjust­ed 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 auto­matically tighten the top roller to the correct ten­sion.

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 800­1200 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 can­not 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 adjust­ments 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 pro­tection 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 oper­ated tracking to make a rhythmic back and
forth noise.

Strange or unnatural noises should be investigat­ed 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 unplug­ging 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 perform­ing any adjustments.
Failure to do this may
result in serious person­al injury.

G9983 15" Open-End Wide-Belt Sander -19-

Before Starting

SECTION 6: OPERATIONS

NOTICE

The following section was designed to give
instructions on the basic operations of this
wide-belt sander. However, it is in no way
comprehensive of every wide-belt sander
application. WE STRONGLY RECOMMEND
that you read books, trade magazines, or
get formal training to maximize the potential
of your wide-belt sander.

Keep loose clothing out
of the way of machinery
and keep hair pulled
back during operations.

Wear safety glasses dur­ing the entire operation
process. Failure to com­ply may result in serious
personal injury.

Disconnect power to the
machine when perform­ing any maintenance or
adjustments. Failure to
do this may result in seri­ous personal injury.

Always wear a dust mask
in addition to using a
dust collector. Dust
masks filter out the
smaller particles of dust
that dust collectors can­not trap.

Before beginning any work with your machine,
make sure you have read through this entire
manual. Your safety while running this machine
absolutely depends on your familiarity and com­pliance with the information in this manual.

Choosing Sandpaper

The Model G9983 takes 16"W x 48"L sanding
belts.

The grit you choose will depend on the type of
work, the species of wood and the stage of fin­ishing. Below is a chart that groups abrasives into
different classes and shows which grits fall into
each class. We recommend using aluminum
oxide for best results.

The general rule of thumb is to sand a workpiece
with progressively higher grit numbers, with no
one grit increase of more than 50.

Ultimately, the type of wood you use and your
stage of finish will determine the best grit types to
install on your sander.

Grit Type

60

80-100

120-150

Coarse

Medium

Fine

-20- G9983 15" Open-End Wide-Belt Sander

Conveyor Height

Conveyor height is controlled by turning the

handwheel shown in Figure 13. A scale is locat-

ed near the handwheel for gauging conveyor
movement. The scale is marked in millimeters

and inches. Figure 14 demonstrates how the

handwheel movement affects the conveyor.

After you have moved the conveyor to the desired
height, lock it in place with the conveyor lock han-

dle shown in Figure 13.

Figure 13. The handwheel moves the conveyor and

the scale tells you how far the conveyor moved.

Figure 14. This illustration shows how

the handwheel moves the conveyor.

Conveyor

Height Scale

Handwheel

Conveyor

Lock Handle

Feed Belt Speed

The feed belt motor (shown in Figure 15 with the

cover removed) controls the speed of the feed
belt. The Model G9983 features speeds of 13.1
FPM and 16.4 FPM.

Figure 15. This is the feed belt motor. Place the

chain on either of the sprockets and the feed

belt will travel at the speed shown.

To change feed belt speeds:

1. Unplug the sander!

2. Remove the cap screw that secures the feed

belt motor cover.

3. Loosen the for motor mount bolts so that the

motor will slide up enough to get the chain off
the sprockets.

4. Determine which speed is best for your appli-

cation and place the chain on either set of

the sprockets shown in Figure 15.

5. Replace the motor cover and secure it with

the cap screw.

16.4

FPM

13.1

FPM

1

⁄64"

5

⁄32"

G9983 15" Open-End Wide-Belt Sander -21-

Load Meter

The load meter shown in Figure 16 displays the

current amperage draw of the sanding belt motor.
The needle rises when you increase the load on
the sanding belts and decreases when you
decrease the load. Use this meter to avoid over­loading your machine with too heavy of a cut.

NEVER exceed 30 amps—this is the maxi­mum that your machine can safely handle!

Since various types of stock will react differently
to various loads, use trial-and-error to determine
the best settings for your applications. As a gen­eral rule, always start with a small load and work
your way up. DO NOT push your machine to its
maximum load; instead, use multiple passes or
install a coarser grit paper.

Figure 16. This is the load meter.

Operation

Under most sanding conditions, a normal cut is
no more than .5mm (approx.

1

⁄64"). This depth can

be achieved by

1

⁄8th turn of the conveyor height
handle. Attempts to remove too much can cause
jamming, wood burning, rapid paper wear or tear­ing, poor finish and belt slippage. For each pass,
turn the stock 180° to ensure an even cut.

NOTICE

We strongly recommend sending wide
stock through the sander two or three times
after the correct height has been estab­lished. This is an important step to prevent
burning your wood or ruining sandpaper.

Long term exposure to
this machine while oper­ating may cause hearing
loss. Wear approved
hearing protection to
minimize this risk!

The following is the correct start-up and oper­ating procedure:

1. Start the dust collector.

2. Make the thickness adjustment by placing

the workpiece on the conveyor table and turn
ing the conveyor handle until the workpiece
can be sanded and fed through smoothly.

Turning the handle clockwise will raise the
conveyor table. Turning the conveyor handle
counter-clockwise will lower the conveyor
table.

3. Remove the workpiece from the conveyor

belt.

4. Start the sander and feed your stock.

Retrieve by standing at the side—not at the
outfeed end.

Make sure any stock that you run through the
sander is clean and free of any defects or for­eign materials that might damage the sand­ing or conveyor belt.

-22- G9983 15" Open-End Wide-Belt Sander

Cleaning Pads

Figure 18. Sanding belt cleaning pad.

Cleaning Pads (one is shown in Figure 18) are

the perfect way to enhance your wide-belt sand­ing operations. Simply set the conveyor table to
height and feed the pad through to “unload” a
used sanding belt. This cleaning will greatly
increase the lifespan of your sanding belts. Since
each pad can be used dozens of times, you will
actually save money in the long run. Check with
the current Grizzly catalog for more details.

Platen Depth

The platen position allows for 3 types of opera­tion. These different positions can be adjusted by

rotating the knob shown in Figure 17. Notice that

the knob has a scale on it. By keeping track of
how many revolutions you have rotated the knob,
you can determine how far you have moved the
platen.

Figure 17. The scale on this knob tells you how

far you have moved the platen.

The three basic platen positions:
Platen Up — The platen is raised above the level

of the sanding rollers. This position allows the
front roller to remove large amounts of material
quickly, but leaves a rough finish. The best belt
grit for this position is #100 or coarser.

Platen Even — The platen is set even with the

sanding rollers. The rollers work together with the
platen to produce intermediate/final finishing. The
best belt grit for this position is #100-#180.

Platen Down — The platen is lowered below the

sanding rollers. The majority of the work is
accomplished by the platen pressure on the
workpiece. The result is a smooth, flat finish. The
best belt grit for this position is #180 or finer.

Avoid Lowering the platen more than .2MM below
the sanding belt rollers—this is the equivalent to
1 full turn of the knob.

G9983 15" Open-End Wide-Belt Sander -23-

General

Lubrication

Roller bearing blocks must be lubricated every 20
hours of operation with high-quality, lithium based
grease via grease fittings on top of each block.

Other moving parts, such as chains, should be
lubricated periodically with a light machine oil. Do
not use too much lubrication because excess can
attract dirt and sawdust and will clog the chain
mechanism.

Make a habit of inspecting your Model G9983

each time you use it. Failure to routinely

inspect your wide-belt sander for damage and
wear could result in unsatisfactory work
results, premature component or machinery
failure, or operator injury. We recommend you
create a checklist for routine inspection and
maintenance. Check for the following conditions

and repair or replace when necessary.

• Loose mounting bolts.

• Worn or damaged sanding belt.

• Worn or damaged cords, plugs or switch.

• Damaged V-belt.

• Any other condition that could hamper the

safe operation of this machine.

Disconnect power to the
machine when perform­ing any maintenance or
assembly. Failure to do
this may result in serious
personal injury.

SECTION 7: MAINTENANCE

Cleaning Sanding Belts

You can greatly increase the lifespan of your
sanding belts if you clean them often. As men-

tioned on page 22, cleaning pads are the best

way to do this.

Whenever sanding belts decrease in perfor­mance because of heavy loading, feed the clean­ing pad through the sander. Repeat this process
until the sanding belts are clean again—this will
ensure optimum performance.

Emptying Filters

There are two filters on the Model G9983. The
first filter is located under the main regulator that
houses the pressure gauge. The second filter,

shown in Figure 19, is located near the oscillation

controls. Since the eye fork configuration is prone
to collecting sawdust, check and empty this filter
often.

Figure 19. Unscrew this filter to empty it.

-24- G9983 15" Open-End Wide-Belt Sander

Maintenance Performed

Approximate Hours Of Use

Maintenance Log

Date

G9983 15" Open-End Wide-Belt Sander -25-

SECTION 8: SERVICE ADJUSTMENTS

Keep loose clothing out
of the way of machinery
and keep hair pulled
back.

Wear safety glasses dur­ing the entire assembly
process. Failure to com­ply may result in serious
personal injury.

Disconnect power to the
machine when perform­ing any maintenance or
assembly. Failure to do
this may result in serious
personal injury.

Oscillation Timing

The first step in adjusting the oscillation is timing
the side to side movement the belt makes when
oscillating. The belt should take the same amount
of time to travel to one side as it did the other.

Keep your hands clear of the sanding belt
when making the adjustments in this step.
The sandpaper is designed to remove a lot of
material quickly whether it is wood or skin!

To time the oscillation movement:

1. Open both access doors to the upper part of

the machine so you can view the belt move­ment. The sanding belt should also be on the
rollers and tightened. Turn the sanding belt

ON.

2. Count the amount of time it takes the belt to

move from one side to the other. If the oscil­lation balance is correct, the belt will move
from one side to the other in even intervals.
If the balance is not correct, the belt may
move to one side very quickly, then very
slowly to the other.

3. If the belt immediately moves too far and

shuts off the machine, then loosen the oscil-

lation timing control knob shown in Figure 20

and move it toward the front or rear of the
machine to rotate the eccentric.

4. Loosen the belt tension, rebalance the sand-

ing belt and retighten the belt tension.

Repeat steps 2 and 3.

-26- G9983 15" Open-End Wide-Belt Sander

Figure 20. This is the oscillation

timing control knob.

5. When you get the belt to oscillate without

stopping, experiment with the timing knob to
see the effect its movement has on the belt
oscillation.

6. Position the timing knob so the belt moves

from one side to the other, back and forth, in
even intervals.

7. Lock the knob in place by turning it clock-

wise.

Long term exposure to
this machine during
operation may cause
hearing loss. Wear
approved hearing pro­tection to minimize this
risk!

Oscillation Speed

Figure 21. Use the knob on this valve to control

oscillation speed.

Use the valve shown in Figure 21 to control the

speed of the sanding belt oscillation. Make sure
the oscillation is balanced before adjusting the
speed.

To increase the oscillation speed, open the

valve (turn the knob counter-clockwise). For nor­mal operation, adjust the oscillation speed so
each direction of belt movement takes approxi­mately 2 seconds. When the speed is correct,
tighten the jamnut so the knob will not move.

To decrease the oscillation speed, close the

valve (turn the knob clockwise). When the speed
is correct, tighten the jamnut.

Different speeds may yield different finishing
results. Experiment with trial-and-error to deter­mine the best speed for your particular situation.

Keep loose clothing out
of the way of moving
machinery and keep
long hair pulled back.

G9983 15" Open-End Wide-Belt Sander -27-

Oscillation Return

Figure 22. This is the oscillation return valve

and the air eye fork.

The oscillation return keeps the sanding belt in

motion. The valve shown in Figure 22 controls

the oscillation return.

To adjust the oscillation return:

1. Turn off all power to the sander, but keep air

pressure going into the machine. Lower the
belt and slide it out of the way of the eye fork.

2. Block the airflow between the eye fork until

the top roller rotates to one side and does not
return.

3. With the airflow still blocked, loosen the jam-

nut on the valve knob and tighten the knob to
close the valve.

4. Now clear the eye fork so the air will flow

between it again. Watch the top roller and
slowly open the valve.

5. When the top roller begins to move, open the

valve another

1

⁄4 to 1⁄2 turn of the knob.
Tighten the jamnut. DO NOT open the valve
more than needed or there will be excessive
pressure on the air system.

Limit Switches

Figure 23. Loosen these bolts to adjust

the limit switch position.

The limit switches are mounted on both sides of
the sanding belt. They are designed to stop the
sander if the belt travels too far to one side of the
top roller.

The limit switches are factory set and should
require no adjustments. However, if they stop
working correctly, they move during adjustments,
or they get replaced, proper adjustments will be
required.

To adjust the limit switches:

1. Center the sanding belt on the top roller.

Measure the distance between the edge of
the sanding belt and the limit switch lever.
This distance should be approximately 1⁄2". If
this measurement is different, then loosen

the adjustment bolts shown in Figure 23 on

the incorrect side.

2. Slide the mounting bracket in the necessary

direction until there is a

1

⁄2" gap between the

edge of the belt and the limit switch lever.

3. Tighten the adjustment bolts to secure the

mounting bracket. Test the sander to verify
that operation returns to normal.

Oscillation

Return

Valve

Air Eye

Fork

-28- G9983 15" Open-End Wide-Belt Sander

Pressure Roller

Depth

Figure 24. These are the pressure roller depth

bolts at the front of the machine. The rear depth

bolts are in the same location at the rear.

Variables such as feed rate, depth of the cut, and
type of sanding belt can play a big part in deter­mining the proper amount of downward pressure
exerted by the rollers. Some experimentation
may be necessary with pressure roller spring ten­sion to achieve the desired results. However,
under no circumstances should the pressure
roller depth be set even, or higher than, the sand­ing rollers or platen.

To adjust the pressure roller depth:

1. Unplug the sander!

2. Joint and plane a 6" W x 36"L piece of wood,

then rip it down the middle. This will give you
two boards that are nearly the exact same
thickness.

3. Place one board along the length of the con-

veyor belt on the right-hand side so it is
directly beneath both front and back pres­sure roller depth bolts. Place the other board
on the left-hand side so it is directly beneath
both front and back pressure roller depth

bolts. Figure 24 shows the front left-hand

and front right-hand pressure roller adjust­ment bolts.

Left-Hand

Pressure

Depth Bolt

Right-Hand

Pressure

Depth Bolt

4. With the air pressure connected, and the

sanding belt installed and tensioned, raise
the pressure rollers above the sanding belt
rollers.

5. Raise the conveyor until the the boards touch

the sanding belt rollers. The rollers should
evenly touch the boards at the same time.

6. Turn the conveyor handwheel counterclock-

wise

1

/8

th of a turn. This should lower the

conveyor approximately .020" or .5mm.

7. Lower each end of the pressure rollers so

they barely touch the boards. Lock in place.

G9983 15" Open-End Wide-Belt Sander -29-

Pressure Roller

Tension

Figure 25. This is one of the four

pressure roller adjustment bolts.

Pressure roller tension is largely set by trial and
error. If there is not enough tension, the work­piece will not pass through the sander evenly and
may possibly be launched toward the operator. If
there is too much tension, the feed belt will expe­rience premature wear and the workpiece will
pass through the sander sluggishly (if at all).

To adjust the pressure roller tension:

1. Unplug the sander!

2. Make sure the pressure roller depth is set

correctly.

3. Open both access doors and locate the pres­sure roller tension springs shown in Figure

25.

4. Turning the nut on the adjustment bolt clock-

wise will increase the tension and counter­clockwise will decrease the tension.

A quick way to gauge that the spring tension is
consistent is to measure the distance from the top
of the nut to the the top of the adjustment bolt. If
the board pulls to one side during sanding, loosen
that side in small increments as needed.

-30- G9983 15" Open-End Wide-Belt Sander

Feed Belt Tracking

To check the feed belt tracking:

1. Turn the feed belt ON.

2. If the belt moves to one side then you need

to immediately stop the machine and adjust
the belt tracking. If the belt tracks evenly,
leave it alone.

To adjust the feed belt tracking:

1. Unplug the sander!

2. Use the adjustment bolts (one is shown in
Figure 26) to correct the tracking.

3. Run the feed belt for a few minutes after the

adjustment to allow the belt to move into its
new position. When you are satisfied that the
belt has finished moving, stop the feed belt.

4. If more adjustments are necessary, experi-

ment with how the movement of the adjust­ment bolts affects the belt tracking; do this
until you can make the feed belt track even­ly. Make sure you did not loosen the belt dur­ing the tracking process. If you did, adjust
each side of one belt roller away from the
machine, as evenly as possible.

Figure 26. This is a feed belt adjustment bolt.

To adjust the feed belt tension:

1. Disconnect the sander from the power
source!

2. Move the emergency brake plate up and out

of the way.

3. Tension adjustments are made using the

bolts located on the left and right side of the
front conveyor roller as shown in

Figure 26

.

4. When tensioned properly you should not be

able to lift the belt off the conveyor surface or
slide it back and forth, and it should not slip.

5. Perform the “Feed Belt Tracking” instructions

to ensure that the tracking did not change
during tensioning.

Feed Belt Tension

G9983 15" Open-End Wide-Belt Sander -31-

V-Belt Tension

The sanding belt is driven by two V-belts on the
Model G9983. The V-belts must have adequate
tension for proper power transmission. Proper
tension is usually achieved when the V-belts can
be deflected no more than 1" with moderate fin­ger pressure at the midpoint between the wide­belt pulleys and the motor pulleys. The large
cover on the right-hand side of the sander must
be removed to access the V-belts and the sand­ing motor.

Thread the nuts shown in Figure 27 down to

tighten the V-belts, or thread the nuts up to
loosen the V-belts.

Always inspect V-belts for damage or deteri­oration when adjusting for tension. Should
you find evidence of cracking, abrasion or
damage from wood chips or other foreign
materials, replace the belt immediately. Belt
breakage may lead to mechanical damage or
operator injury.

Figure 27. Turning these nuts allows you to

raise/lower the motor to adjust the V-belts.

Replacing V-Belts

Figure 28. Loosen the V-belt by using the

adjustment nuts.

Inspect the V-belts closely; if you see any glazing,
cracking or fraying, replace the belts. Always
replace the two V-belts at the same time for prop­er power transmission.

To replace the V-belts:

1. Disconnect sander from the power
source and shut off air pressure.

2. Loosen the top nut on the motor adjustment

bolt shown in Figure 28. Turn the bottom nut

counterclockwise to raise the motor (or pry
motor up with a scrap piece of wood) and
loosen the V-belts.

3. When V-belts are sufficiently loose, slide

them off of the motor pulley.

4. To remove the V-belts from the roller pulley,

the roller needs to be removed. Open the
left-hand access door and remove the platen
micro-adjust knob by loosening the setscrew
that secures the face. The plate underneath
the knob is secured to the casting by two

setscrews—remove these. Figure 29 shows

the knob and indicator plate removed from
the casting.

5. Remove the large cap screws, also shown in
Figure 29, to loosen the casting on the roller

shafts.

-32- G9983 15" Open-End Wide-Belt Sander

NOTICE

New V-belts will often stretch after moder­ate use. Check frequently after installation.

Figure 29. Remove platen adjustment knob,

indicator plate, and large cap screws.

Figure 31. Remove this roller shaft nut located

behind right-hand access door.

Figure 30. Work the casting off the roller shafts.

Figure 32. Remove roller.

6. Work the casting off the roller shafts as
shown in Figure 30.

7. Open the right-hand access door and locate

the large nut shown in Figure 31 and remove

it with the box wrench included with the
machine.

8. Slide out the front roller shaft, as shown in
Figure 32, to get the V-belts off of the pulley.

9. Installation is the reverse of removal. If pos-

sible, have an assistant help you when
installing the V-belts and the roller. Also, an
assistant can be helpful on the other end of
the roller when tightening the nuts on the
roller shafts.

G9983 15" Open-End Wide-Belt Sander -33-

Air System

If you ever determine that a component in
the air system is malfunctioning, DO NOT
operate the sander. Fix the problem before
resuming operation.

The air system is durable and reliable; however,
components do wear with age. If you suspect that
an item in your air system may be having prob-

lems, use the diagram on page 38 to follow all

lines and connections, and use the instructions
below to investigate.

• Carefully inspect all air lines for cracks, tears
or hardening. Replace faulty hoses.

• Check the air connections for leaks. A small
amount of water in a questionable area will
bubble if there is a leak.

• Make sure lines are not clogged. Remove a
questionable line and blow through it as a
test.

Platen Graphite

The graphite sheet on the platen will wear out
with use. Similar to the sanding belts, the graphite
sheet is considered a “consumable” item and is
not covered under the warranty. We recommend
keeping replacements in your inventory to avoid
downtime. To obtain replacements, use the part
number in the back of this manual for ordering.

To replace the graphite sheet:

1. Pull the platen from its bracket with the

included platen puller tool.

2. Remove the screws and hold-down bar that

secure the graphite sheet to the platen.

3. Install the new graphite sheet exactly the

reverse as removal. Make sure that the

graphite sheet is wrapped in the same direc­tion as the old one.

-34- G9983 15" Open-End Wide-Belt Sander

Replacing Brakes

Figure 33. Removing caliper to replace

brake pads.

The only regular maintenance to perform on the
brakes is to keep the rotor clean. This is a simple
process and can be performed by spraying both
sides of the rotor with automotive brake parts
cleaner. The brake rotor must be free and clean
of any dust, dirt, oil or moisture.

Eventually the brake pads will wear out. Checking
and replacing these is a simple project that can
be done in the shop, with the exception of having
the rotor resurfaced.

To check the brake pads:

1. Disconnect the sander from the power
source and remove the air pressure com­pletely.

2. Remove the four screws that secure the

motor cover on the right-hand side of the
machine. This will allow you to access the
brake components.

3. The brake pads consist of a metal plate with

a composite pad. With a fine ruler, measure
the thickness of the composite pad only. If
one of the pads is below

1

⁄8" (approx. 3mm),

replace both.

To replace the brake pads:

1. Disconnect the sander from the power
source and remove the air pressure com­pletely.

2. Remove the nuts from the two mounting

bolts. There are two snap rings on the
mounting pins behind the bracket. Remove
these.

3. Pull the mounting pins out of the caliper

bracket and remove the air line from the
caliper. The caliper should now be able to be

removed as in Figure 33.

4. The brake pads are secured to the caliper

with cap screws. One of these screws is eas­ily accessible; the other can only be reached
by disassembling the brake caliper. Do this
and remove the cap screws to remove the
brake pads.

5. Remove the brake rotor and have it profes-

sionally resurfaced. For this, find a local
machinist or auto supply store that regularly
resurfaces brake rotors for automobiles. If
visible cracks are present in the brake rotor,
replace with a new one. Clean the rotor with
automotive brake cleaner to remove any oil
or dirt. Handle with a dry rag and install
exactly the reverse of removal.

6. Install new brake pads, mount the caliper

and reconnect the air line.

G9983 15" Open-End Wide-Belt Sander -35-

Service Performed

Approximate Hours Of Use

Service Log

Date

-36- G9983 15" Open-End Wide-Belt Sander

The following pages contain general machine
data, parts diagrams/lists, a troubleshooting guide
and Warranty/Return information for your Model
G9983 Wide-belt Sanders.

If you need parts or help in assembling your
machine, or if you need operational information,
we encourage you to call our Service
Department. Our trained service technicians will
be glad to help you.

If you have comments dealing specifically with
this manual, please write to our Bellingham,

Washington location using the address in Section
2: Introduction. The specifications, drawings, and

photographs illustrated in this manual represent
the Model G9983 as supplied when the manual
was prepared. However, due to Grizzly’s policy of
continuous improvement, changes may be made
at any time with no obligation on the part of
Grizzly. Whenever possible, though, we send
manual updates to all owners of a particular tool
or machine. Should you receive one, add the new
information to this manual and keep it for refer­ence.

We have included some important safety mea­sures that are essential to this machine’s opera­tion. While most safety measures are generally
universal, Grizzly reminds you that each work­shop is different and safety rules should be con-

sidered as they apply to your specific situation.

We recommend you keep a copy of our current
catalog for complete information regarding
Grizzly's warranty and return policy. If you need
additional technical information relating to this
machine, or if you need general assistance or
replacement parts, please contact the Service

Department listed in Section 3: Introduction.

Additional information sources are necessary to
realize the full potential of this machine. Trade
journals, woodworking magazines, and your local
library are good places to start.

SECTION 8: CLOSURE

The Model G9983 was specifically designed
for sanding wood. DO NOT MODIFY
AND/OR USE THIS MACHINE FOR ANY
OTHER PURPOSE. Modifications or improp­er use of this tool will void the warranty. If
you are confused about any aspect of this
machine, DO NOT use it until all your ques­tions have been answered. Serious person­al injury may occur.

Like all power tools, there is danger associ­ated with the Model G9983 Wide-belt
Sander. 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.

This equipment has the potential to create
flying debris which can cause severe 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 glasses you
wear meet the appropriate standards of the
American National Standards Institute
(ANSI).

G9983 15" Open-End Wide-Belt Sander -37-

Customer Service #: [phone] • To Order Call: [phone] • Fax #: [phone]

MODEL G9983

15" OPEN-END WIDE-BELT SANDER

MACHINE DATA

SHEET

Design Type ..................................................................................Floor Model - Open End

Overall Dimensions:

Height ..................................................................................................................61

3

⁄4"

Width ........................................................................................................................35"

Depth ....................................................................................................................32

1

⁄2"

Shipping Weight ................................................................................................923 lbs.

Net Weight ........................................................................................................815 lbs.

Foot Print ......................................................................................................29 x 23

1

⁄2"

Crate Size ................................................................................35

1

⁄2" L x 37" W x 70" H

Capacities:

Maximum Board Width (in one pass) ......................................................................15"

Maximum Board Thickness ....................................................................................5

1

⁄2"

Minimum Board Length .......................................................................................... 12"

Surface Speed of Sanding Belt ....................................................................2050 FPM

Conveyor Feed Rate ..........................................................................13.1 & 16.4 FPM

Sanding Belt Size............................................................................................16" x 48"

Sanding Motor:

Horsepower............................................................................................................5 HP

Voltage ..................................................................................................................220V

Amps..........................................................................................................................30

RPM ......................................................................................................................1725

Phase ⁄ Cycle ..........................................................................................Single ⁄ 60 HZ

Power Transfer........................................................................................2 V-Belt Drive

Conveyor Motor:

Horsepower ..........................................................................................................

1

⁄4 HP

Voltage ..................................................................................................................220V

Amps ........................................................................................................................1.8

RPM ......................................................................................................................1725

Phase ⁄ Cycle ..........................................................................................Single ⁄ 60 HZ

Power Transfer ................................................................................Gear Box to Chain

General Construction:

Cabinet ..................................................................................................................Steel

Belt Drums ....................................................................................Rubber Infeed Drum

................................................................................................................Steel Outfeed

..............................................................................................Rubber Pressure Rollers

Features:

............................................................................................Independent Motor Control

............................................................................................Pneumatic Belt Tensioning

................................................................................................Pneumatic Belt Tracking

....................................................................................................................Load Meter

........................................................................................................Safety Shut-Off Bar

............................................................................................................Thickness Scale

......................................................................Disc Brake System for Emergency Stops

....................................................................................................................5" Dust Port

Specifications, while deemed accurate, are not guaranteed.

-38- G9983 15" Open-End Wide-Belt Sander

Air System

Various functions on the Model G9983 are con­trolled through the air system. Since this is a com­plex network of hoses and valves, please take
some time to familiarize yourself with each item
so you can better understand your machine dur­ing adjustments.

The illustration below follows the air travel
through the machine to familiarize you with how it
works. Match the letters in the text with those in
the illustration to learn more about each function.

1. The air flows into the machine at the pres-

sure regulator (A). This should be adjusted to
75 PSI.

2. The solenoid valve (C) controls the brake

caliper (B) when signaled by the emergency
stop switch or the limit switches.

3. The switching valve (E) controls the vertical

cylinder (D) which raises/lowers the top roller
(M) to tighten/loosen the sanding belt.

4. The valve (G) controls the air flow volume

that goes to the air eye fork (F), which con­trols the belt oscillation return.

5. The diaphragm (H) actuates the switching

valve (I) depending on whether air is coming
from the eye fork (F) or the pressure regula­tor (A).

6. Switching valve (I) actuates the diaphragm

(J), which controls oscillation arm (K), which
in turn, moves eccentric shaft (L), which
makes top roller (M) shift back and forth to
control belt movement during operation.

7. Valve (O) controls the speed at which the

belt moves back and forth.

8. Knob (N) allows you to rotate the eccentric

shaft (L) to balance the oscillation timing so it
takes the belt the same amount of time to
move in one direction as it moves in the other
direction.

This is an illustration of the air control system.

M

N

F

O

D

E

F

J

B

C

L

K

I

H

P

G

Air Inlet

A

G9983 15" Open-End Wide-Belt Sander -39-

Model G9983

Wiring Diagram—Main Hook Up Panel

220 Volt Single-Phase

220V POWER

R S T

TO BRAKING

SOLENOID VALVE

12 13 3 3 5 5 U2

2 3 5 6 8 9 10 11 14 15

TO BELT &

STOP SWITCHES

TO ELECTRICAL

SWITCH PANEL

TO FEED

MOTOR

V2

TO MAIN MOTOR

U1

V1

W1

13

NC

L3

T3

RESET

1.7

1.9

1.5

1.3

2.1

A(R.C.)

FN1853-39

14

NC

1L13L25

CN­11

2T14T26

29

31

1L13L25

CN­11

2T14T26

1L13L25

CN­ 25

2T14T26

2A FUSES

!

Disconnect power from machine
before performing any electrical
service. Failure to do this will result
in a shock hazard leading to injury
or death.

L3

T3

RESET

26

23

21

A(R.C.)

FN1853-39

13

NC

L3

T3

14

NC

-40- G9983 15" Open-End Wide-Belt Sander

D

I

C

N

A

I

T

R

O

E

R

Model G9983

X1 X2

W

O

P

220 Volt Single Phase

Wiring Diagram -Control Panel

E

D

E

F

21

22

X2

X1

21

22

B

E

P

L

O

T

T

S

E

E

D

F

B

T

E

R

L

A

T

T

S

N

A

D

S

I

N

G

B

P

E

O

L

T

T

S

14 13

13 14

14 13

21 22

2 3 5 6 8 9 10 11 14 15

N

A

D

S

I

X2

X1

21

22

N

G

B

T

E

R

L

A

T

T

S

E

R

T

13 14

21 22

Disconnect power from machine

before performing any electrical

service. Failure to do this will result

in a shock hazard leading to injury

E

S

T

R

E

S

E

14 13

or death.

!

G9983 15" Open-End Wide-Belt Sander -41-

BELT
LIMIT

SWITCH

Model G9983

Wiring Diagram - 220 Volt Single Phase

MAIN MOTOR

1

5

4

4

1

3

2

4

1

3

2

Starting 250VAC
Capacitor 800MFD

Running 350VAC
Capacitor 50UF-U

1

2

6

EMERGENCY STOP

LIMIT SWITCH

1

4

3

2

SOLENOID

VALVE

12 13 3 3 5 5 U2

V2

FEED BELT MOTOR

1

4

W2

5

2

3

6

U1

V1

W1

!

Disconnect power from machine
before performing any electrical
service. Failure to do this will result
in a shock hazard leading to injury
or death.

-42- G9983 15" Open-End Wide-Belt Sander

1 P9983001 TOOL BOX
2 PWR1214 COMBO WRENCH 12/14MM
3 P9983003 BOX WRENCH 30/37MM
4 P4000937 PHILLIPS SCREWDRIVER
5 P9983005 ACCESS DOOR HANDLE

6 PWR1719 COMBO WRENCH 17/19MM
7 PWR1113 COMBO WRENCH 11/13MM
8 PWR810 COMBO WRENCH 8/10MM
9 P9983009 ALLEN WRENCH SET (10)
10 P9983010 PLATEN TOOL

REF PART # DESCRIPTION REF PART # DESCRIPTION

G9983 Parts Breakdown

2

3

4

1

5

6

8

7

10

9

G9983 15" Open-End Wide-Belt Sander -43-

124

110

109

111

108

106

120

119

107

105

118

113

126

121

122

125

117

115

114

103

104

102

116

123

101

154

153

134

155

132

133

130

158

157

129

131

156

135

160

144

159

161

143

146

145

137
136

127

147

142

138

149

148

139

150

141

140

151

128

152

112

-44- G9983 15" Open-End Wide-Belt Sander

REF PART # DESCRIPTION

REF PART # DESCRIPTION

101 P9983101 MACHINE BASE
102 P9983102 QUILL BASE
103 PSB64M CAP SCREW M10-1.5 X 25
104 P9983104 LOCK WASHER 10MM
105 P9983105 LOCKING HANDLE
106 P9983106 WORM GEAR SHAFT
107 P51102 BEARING 51102
108 P6203 BEARING 6203ZZ
109 PR23M INT RETAINING RING 40MM
110 P9983110 HANDWHEEL
111 PSB64M CAP SCREW M10-1.5 X 25MM
112 P9983112 HANDLE M10
113 P9983113 WORM GEAR
114 P9983114 BUSHING
115 P9983115 GEAR SHAFT
116 PR18M EXT RETAINING RING 17MM
117 P9983117 QUILL
118 P9983118 RACK
119 PSB26M CAP SCREW M6-1.0 X 12
120 P9983120 CONVEYOR SUPPORT
121 PSB12M CAP SCREW M8-1.25 X 40
122 PLW04M LOCK WASHER 8MM
123 PSB12M CAP SCREW M8-1.25 X 40
124 P9983124 QUILL COVER
125 PS14M PHLP HD SCR M6-1.0 X 12
126 P9983126 FLAT WASHER 6MM
127 P9983127 MACHINE BASE COVER
128 PS47M PHLP HD SCR M6-1.0 X 25
129 P9983129 MOTOR BASE
130 P9983130 SETTING SHAFT
131 P9983131 LOCK BUSHING

132 PSS09M SETSCREW M8-1.25 X 20
133 PW04M FLAT WASHER 10MM
134 PSB62M CAP SCREW M10-1.5 X 12
135 P9983135 ADJUSTABLE SCREW
136 PW06M FLAT WASHER 12MM
137 PN09M HEX NUT M12-1.75
138 P9983138 BRAKE PIN
139 PR47M EXT RETAINING RING 13MM
140 PLW06M LOCK WASHER 10MM
141 PN02M HEX NUT M10-1.5
142 P9983142 BRAKE CALIPER
143 P9983143 BRAKE PAD
144 PS14M CAP SCREW M6-1.0 X 12
145 P9983145 SPRING
146 P9983146 BRAKE AXLE
147 P9983147 PLATE
148 PS47M PHLP HD SCR M6-1.0 X 25
149 P9983149 DIAPHRAGM
150 P9983150 TOP COVER
151 PS20M PHLP HD SCR M5-.08 X 15
152 P9983152 PLASTIC CONNECTOR
153 PLW06M LOCK WASHER 10MM
154 PB01M HEX BOLT M10-1.5 X 30
155 P9983155 SPINDLE MOTOR 5HP
156 P9983156 BRAKE ROTOR
157 PLW06M LOCK WASHER 10MM
158 PSB75M CAP SCREW M10-1.5 X 18
159 P9983159 MOTOR PULLEY
160 PSS13M SETSCREW M10-1.5 X 12
161 PVA71 BELT A71

G9983 15" Open-End Wide-Belt Sander -45-

225

REF PART # DESCRIPTION

REF PART # DESCRIPTION

201 P9983201 CONVEYOR SUPPORT
202 P9983202 ROLLER BRACKET LH
203 P9983203 ROLLER BRACKET RH
204 PLW04M LOCK WASHER 8MM
205 PB07M HEX BOLT M8-1.25 X 25
206 PSB40M CAP SCREW M8-1.25 X 35
207 P9983207 BRASS ROLLER
208 PLW04M LOCK WASHER 8MM
209 PN03M HEX NUT M8-1.25
210 P9983210 LIMIT SWITCH BASE
211 PW03M FLAT WASHER 6MM
212 PS14M PHLP HD SCR M6-1.0 X 12
213 P9983213 LIMIT SWITCH
214 PW05M FLAT WASHER 4MM
215 PS48M PHLP HD SCR M4-.7 X 50
216 PN04M HEX NUT M4-.7
217 P9983217 E-BRAKE PANEL
218 PRP03M PIN 5 X 20MM
219 PR11M EXT RETAINING RING 25MM
220 P6305 BEARING 6305ZZ
221 P9983221 CONVEYOR AXLE
222 PSS39M SETSCREW M10-1.5 X 50
223 P9983223 CONVEYOR ROLLER
224 P9983224 CONVEYOR BELT 380 X 1600
225 P9983225 BEARING SEAT
226 PLW04M LOCK WASHER 8MM

227 PB09M HEX BOLT M8-1.25 X 20
228 P6204 BEARING 6204ZZ
229 PR25M INT RETAINING RING 47MM
230 P9983230 MAIN ROLLER
231 PK67M KEY 8 X 7 X 15MM
232 P9983232 MOTOR PANEL
233 P6205 BEARING 6205ZZ
234 PR11M EXT RETAINING RING 25MM
235 P9983235 BEARING COVER
236 PSB74M CAP SCREW M6-1.0 X 18
237 P9983237 BUSHING
238 P9983238 CHAIN WHEEL 19T X 24T
239 PSS02M SETSCREW M6-1.0 X 6
240 P9983240 CHAIN

3

⁄

8" X 48PC

241 P9983241 ROLLER CHAIN COVER
242 PSB37M CAP SCREW M6-1.0 X 50
243 P9983243 FEED MOTOR

1

⁄4 HP
244 PLW04M LOCK WASHER 8MM
245 PN03M HEX NUT M8-1.25
246 PW01M FLAT WASHER 8MM
247 PB26M HEX BOLT M8-1.25 X 30
248 PLW04M LOCK WASHER 8MM
249 PB09M HEX BOLT M8-1.25 X 20
250 P9983250 CHAIN WHEEL 12T, 14T
251 PSS02M SETSCREW M6-1.0 X 6

228

229

230

231

232

233

245

243

244

235

234

237

236

246

247

239

251

248

238

250

249

242

241

240

209

208

210

201

207

227

226

205

202

204

218

206

215

214

203

223

213

219

216

211

212

220

221

222

217

224

-46- G9983 15" Open-End Wide-Belt Sander

324

G9983

327

328

329

307
306

305

320

381

330

304

317

316

321
322

311

310

319

318

315

312

314

313

326

302

303

341

309

323

340

339

308

301

325

338

337

336

335

334

333

332

331

349

348

350

358

357

356

351

355

354

374

352

375

359

377

376

353

363

378

361

360

373

362

370

342

368

367

366

365

364

369

343

344

371

372

380

379

347

346

345

G9983 15" Open-End Wide-Belt Sander -47-

REF PART # DESCRIPTION

REF PART # DESCRIPTION

301 P9983301 CONTACT ROLLER BASE
302 PLW06M LOCK WASHER 10MM
303 PSB72M CAP SCREW M10-1.5 X 30
304 P9983304 SWITCH PLATE
306 PLW06M LOCK WASHER 10MM
307 PSB72M CAP SCREW M10-1.5 X 30
308 P9983308 COVER
309 PS02M PHLP HD SCR M4-.07 X 12
310 PLW04M LOCK WASHER 8MM
311 PB07M HEX BOLT M8-1.25 X 25
312 P9983312 FORK
313 PW03M FLAT WASHER 6MM
314 PS14M PHLP HD SCR M6-1.0 X 12
315 P9983315 CYLINDER ROLLER FRAME
316 PSS04M SETSCREW M6-1.0 X 12
317 P9983317 SUPPORT TUBE
318 PLW04M LOCK WASHER 8MM
319 PSB76M CAP SCREW M8-1.25 X 18
320 P9983320 TOP ROLLER SUPPORT
321 PLW04M LOCK WASHER 8MM
322 PSS41M SETSCREW M8-1.25 X 18
323 P9983323 TOP ECCENTRIC FRAME
324 PSB26M CAP M6-1.0 X 12MM
325 P9983325 KNOB BOLT M8 X 55
326 P9983326 ECCENTRIC SHAFT
327 PR11M EXT RETAINING RING 25MM
328 P6205 BEARING 6205ZZ
329 P9983329 TOP ROLLER
330 P9983330 TOP ROLLER SHAFT
331 P9983331 TOP COVER
332 P9983332 DIAPHRAGM
333 PS14M PHLP HD SCR M6-1.0 X 12
334 P9983334 PLATE
335 P9983335 SHAFT
336 P9983336 SPRING
337 P9983337 BOTTOM COVER
338 PS06M PHLP HD SCR M5-.8 X 20
339 PR05M EXT RETAINING RING 15MM
340 PN02M HEX NUT M10-1.5
341 P9983341 OSCILLATION SQUARE

342 PR11M EXT RETAINING RING 25MM
343 PR25M INT RETAINING RING 47MM
344 P6005 BEARING 6005ZZ
345 P9983345 CONTACT ROLLER
346 P9983346 ROLLER SHAFT
347 P9983347 SLEEVE
348 PR11M RETAINING RING S25
349 PR25M RETAINING RING R47
350 P6005 BEARING 6005ZZ
351 P9983351 SUPPORT ROLLER
352 P9983352 ROLLER SHAFT
353 P9983353 BUSHING
354 P9983354 ROLLER BASE
355 P9983355 MICROMETER BASE
356 PSB26M CAP SCREW M6-1.0 X 12
357 P9983357 MICROMETER
358 PSS04M SETSCREW M6-1.0 X 12
359 P9983359 MAIN WORM GEAR SHAFT
360 P9983360 CONNECTION COUPLING
361 PSS04M SETSCREW M6-1.0 X 12
362 P9983362 SUPP WORM GEAR SHAFT
363 P9983363 GRAPHITE BASE L
364 P9983364 GRAPHITE BASE R
365 P9983365 WORM GEAR
366 P9983366 GEAR BUSHING
367 PLW04M LOCK WASHER 8MM
368 PB03M HEX BOLT M8-1.25 X 16
369 P9983369 VERT MICROMETER SCREW
370 P9983370 PLATEN (MALE)
371 PW01M FLAT WASHER 8MM
372 PSB58M CAP SCREW M8-1.25 X 12
373 P9983373 PLATEN (FEMALE)
374 P9983374 CARBON GRAPHITE
375 P9983375 SET PLATE
376 PW05M FLAT WASHER 4MM
377 PS02M PHLP HD SCR M4-.7 X 12
378 P9983378 LINING 30 X 415MM
379 PLW07M LOCK WASHER 20MM
380 PN17M HEX NUT M20-1.5
381 P9983381 SANDING BELT 16"W X 48"

-48- G9983 15" Open-End Wide-Belt Sander

404

403

404

415

414

413

424

423

425

426

416

422

418

417

421

420

419

412

427

428

401

410

440

441

442

408

443

446

409

411

407

445

444

433

438
437

402

405

406

411

430

429

431

435

436

432

434

439

502

503

501

504

506

505

501

540

539

515

513

507

514

508

511

510

512

517

509

538

518

516

519

520

521

523

522

524

525

532

531

534

526

527

528

530

529

535

536

537

533

G9983 15" Open-End Wide-Belt Sander -49-

REF PART # DESCRIPTION

REF PART # DESCRIPTION

401 P9983401 MACHINE FRAME
402 P9983402 ACCESS DOOR RH
403 P9983403 ACCESS DOOR LH
404 P9983404 LOCK
405 P9983405 OPERATING PANEL
406 P9983406 LOAD METER
407 P9983407 POWER INDICATOR
408 P9983408 START BUTTON
409 P9983409 STOP BUTTON
410 P9983410 EMERGENCY STOP BUTTON
411 PS47M PHLP HD SCR M6-1.0 X 25
412 P9983412 PRESSURE ROLLER FRAME
413 PLW03M LOCK WASHER 6MM
414 PSB06M CAP SCREW M6-1.0 X 25
415 P9983415 TILTING ARM
416 PSS26M SETSCREW M5-08 X 6
417 P9983417 SPRING
418 P9983418 SPRING HOOK
419 PW01M FLAT WASHER 8MM
420 PN03M HEX NUT M8
421 P9983421 SET PIN
422 PR01M EXT RETAINING RING 10MM
423 P9983423 BEARING COVER
424 P6001 BEARING 6001ZZ
425 P9983425 PRESSURE ROLLER
426 P9983426 PRESSURE SHAFT
427 P9983427 SPECIAL NUT M8-1.25
428 PSS42M SETSCREW M8-1.25 X 50
429 P9983429 PLASTIC CONNECTOR L6-

1

⁄8"

430 P9983430 SWITCHING VALVE

1

⁄8"

431 P9983431 SILENCER

1

⁄8"

432 P9983432 PLASTIC CONNECTOR C6-

1

⁄8"
433 P9983433 LINING
434 PS49M PHLP HD SCR M3-.5 X 5
436 PS02M PHLP HD SCR M4-.7 X 12
437 P9983437 TOP ALUMINUM COVER
438 PS06M PHLP HD SCR M5-.8 X 20
439 P9983439 PLASTIC CONNECT M6 X

1

⁄4"
440 P9983440 PLATE
441 P9983441 DIAPHRAGM
442 P9983442 BOTTOM ALUMINUM COVER
443 P9983443 PLASTIC CONNECT

1

⁄8" X 1⁄8"

444 P9983444 CUP

1

⁄4"

445 P9983445 CONNECTOR 1⁄4"
446 P9983446 PLASTIC CONNECT C6-

1

⁄4"
501 P9983501 SWITCHING VALVE
502 PS12M PHLP HD SCR M3-.5 X 6
503 PS12M PHLP HD SCR M3-.5 X 6
504 P9983504 LIMIT SWITCH PANEL
505 P9983505 SILENCER

1

⁄8"

506 P9983506 PLASTIC CONNECT L6-

1

⁄8"

507 P9983507 PLASTIC CONNECT C6-

1

⁄8"
508 P9983508 SENSOR PIN
509 P9983509 LIMIT SWITCH 8166
510 PS50M PHLP HD SCR M3-.5 X 12
511 PS50M PHLP HD SCR M3-.5 X 12
512 P9983512 AIR VALVE

1

⁄8"

513 P9983513 PLASTIC CONNECT C6-

1

⁄8"
514 P9983514 PLASTIC CONNECT L6-

1

⁄8"
515 PS52M PHLP HD SCR M4-.7 X 20
516 P9983516 PLASTIC CONNECT 6Y
517 P9983517 PLASTIC CONNECT 6T
518 P9983518 PLASTIC CONNECT C6-

1

⁄8"

519 PN11 HEX NUT

3

⁄8"-24

520 P9983520 AIR EYELET (OUT)

3

⁄8"

521 P9983521 BRASS NUT

3

⁄8"-UNF
522 P9983522 BUSHING 10MM
523 P9983523 PLASTIC CONNECT

1

⁄8" X 3⁄8"

524 P9983524 AIR VALVE

1

⁄8

"

525 P9983525 PLASTIC CONNECT L6-

1

⁄8"

526 P9983526 SOLENOID VALVE

1

⁄8" X 220V

527 P9983527 PLASTIC CONNECT B6-

1

⁄8

"

528 P9983528 PLASTIC CONNECT L6-

1

⁄8"

529 P9983529 SILENCER

1

⁄8"
530 P9983530 CONNECTOR
531 PS25M PHLP HD SCR M4-.7 X 35
532 PN04M HEX NUT M4-.7
533 P9983533 PRESSURE GAUGE

K-1000FR2

534 P9983534 PLASTIC CONNECT L6-1⁄4"
535 P9983535 AIR COCK

1

⁄4" X 5⁄16"
536 PW03M FLAT WASHER 6MM
537 PS14M PHLP HD SCR M6-1.0 X 12
538 P9983538 TENSION CYLINDER

63 X 40ST

539 P9983539 PLASTIC CONNECT C6-1⁄8"
540 P9983540 SILENCER

1

⁄4"

-50- G9983 15" Open-End Wide-Belt Sander

620

619

621

622

601

623

618

624

625

608

609

603

617

604

626

612

612

606

611

605

606-1

604-1

602

601

602

717

713

718*

728*

715

714

720*

719*

729*

721*

722*

726*

711

706

707

704

703

702

701

* Optional Parts

705

710

712

708

709

716

725*

724*

723*

730*

731

727

G9983 15" Open-End Wide-Belt Sander -51-

REF PART # DESCRIPTION

REF PART # DESCRIPTION

601 P9983601 CONTROL BOX
602 P9983602 LOCK
603 P9983603 CONTROL PANEL
604 P9983604 CONTACTOR CN-25 SAND

604-1 P9983604-1 THERMAL RH 18/26

605 P9983605 CONTACTOR CN-11 MAIN
606 P9983606 CONTACTOR CN-11 FEED

606-1 P9983606-1 THERMAL RH 10E/1.7C

608 P9983608 CURRENT TRANSFORMER
609 P9983609 TERMINAL BOARD
611 P9983611 TERMINAL BOARD
612 P9983612 TERMINAL BOARD
617 P9983617 GROUND WIRE PANEL
618 P9983618 WIRE SLEEVE
619 P9983619 WIRE SLEEVE
620 P9983620 WIRE SLEEVE
621 P9983621 WIRE SLEEVE
622 P9983622 WIRE SLEEVE
623 P9983623 WIRE SLEEVE
624 P9983624 WIRE CONNECTOR (IN)
625 PS14M PHLP HD SCR M6-1.0 X 12
626 PN01M HEX NUT M6-1.0
701 P9983701 PLASTIC COVER
702 PN03M HEX NUT M8-1.25
703 PLW04M LOCK WASHER 8MM
704 PW01M FLAT WASHER 8MM
705 P9983705 TABLE SUPPORT

706 P9983706 SUPPORT LINING
707 PS11M PHLP HD SCR M6-1.0 X 16
708 PW03M FLAT WASHER 6MM
709 PN01M HEX NUT M6-1.0
710 P9983710 RETRACTABLE ROD
711 PSS10M SETSCREW M10-1.5 X 20
712 PN02M HEX NUT M10-1.5
713 P9983713 ECCENTRIC SHAFT LH
714 PN27M HEX NUT LH M10-1.5
715 PLW06M LOCK WASHER 10MM
716 P9983716 ECCENTRIC SHAFT RH
717 PN02M HEX NUT M10-1.5
718 PSB62M CAP SCREW M10-1.5 X 12
719 PLW06M LOCK WASHER 10MM
720 PW04M FLAT WASHER 10MM
721 P9983721 INFEED TABLE FRAME
722 PR47M EXT RETAINING RING 13MM
723 P9983723 ROLLER BUSHING
724 P9983724 ROLLER SHAFT
725 P9983725 CONVEYOR ROLLER
726 PRP28M PIN 5 X 40MM
727 P9983727 EMERGENCY BRAKE PANEL
728 P9983728 KNOB
729 P9983729 BRAKE ROD
730 PR39M EXT RETAINING RING 8MM
731 P9983731 SPRING

-52- G9983 15" Open-End Wide-Belt Sander

For your safety, turn switch OFF and dis­connect the machine from power source
before any troubleshooting. Please refer to
the adjustment section to make correc­tions.

TROUBLESHOOTING

SYMPTOM

Motor will not start.

Motor will not start; fuses or
circuit breakers blow.

Motor overheats.

Motor stalls (resulting in
blown fuses or tripped cir­cuit).

Machine slows when oper­ating.

Loud, repetitious noise com­ing from machine

Machine is loud, overheats
or bogs down in the cut.

Edges of wood are rounded.

Uneven thickness from left
to right of board.

Workpiece slips on feed
belt.

Straight strip of notches on
workpiece.

Snake shaped marks on
workpiece.

POSSIBLE CAUSE

1. Low voltage.

2. Open circuit in motor or loose con­nections.

1. Short circuit in line cord or plug.

2. Short circuit in motor or loose con­nections.

3. Incorrect fuses or circuit breakers
in power line.

1. Motor overloaded.

2. Air circulation through the motor
restricted.

1. Short circuit in motor or loose con­nections.

2. Low voltage.

3. Incorrect fuses or circuit breakers
in power line.

4. Motor overloaded.

1. Feed rate too high.

2. Depth of cut too great.

1. Pulley set screws or keys are miss­ing or loose.

2. Motor fan is hitting the cover.

3. V-belt is defective.

1. Excessive depth of cut.

2. Dull sanding belt.

1. Excessive depth of cut.

1. Feed table not parallel to sanding
roller.

2. Feed belt is worn.

1. Pressure rollers set too high.

2. Dirty feed belt.

3. Feed belt is worn.

1. Pressure rollers are dirty or dam­aged.

1. Sanding belt damaged or dirty.

CORRECTIVE ACTION

1. Check power line for proper voltage.

2. Inspect all lead connections on motor for loose or open connections.

1. Inspect cord or plug for damaged insulation and shorted wires.

2. Inspect all connections on motor for loose or shorted terminals or
worn insulation.

3. Install correct fuses or circuit breakers.

1. Reduce load on motor.

2. Clean out motor to provide normal air circulation.

1. Inspect connections on motor for loose or shorted terminals or worn
insulation.

2 Correct the low voltage conditions.

3. Install correct fuses or circuit breakers.

4. Reduce load on motor.

1. Feed workpiece slower and watch load meter.

2. Reduce depth of cut and watch load meter.

1. Inspect keys and set screws. Replace or tighten if necessary.

2. Tighten fan or shim cover.

3. Replace V-belt. See Maintenance section.

1. Decrease depth of cut.

2. Replace sanding belt.

1. Reduce depth of cut.

1. Adjust the table.

2. Replace feed belt.

1. Lower pressure rollers.

2. Clean feed belt.

3. Replace feed belt.

1. Clean or repair pressure rollers.

1. Clean or replace sanding belt.

G9983 15" Open-End Wide-Belt Sander -53-

For your safety, turn switch OFF and dis­connect the machine from power source
before any troubleshooting. Please refer to
the adjustment section to make correc­tions.

TROUBLESHOOTING

SYMPTOM

Lines across width of work­piece.

More material is removed
from the end of workpiece
than the length (snipe).

Glossy spots or streaks on
workpiece.

Sanding belt clogs quickly.

Sanding belt does not ten­sion correctly; rollers slip
under belt.

Sanding belt runs off to one
side, stopping the sander.

Sanding belt will not start.

Poor, non-aggressive sand­ing results.

Conveyor belt not tracking
in center.

Conveyor belt slipping.

Emergency brake stops
slow.

Grinding noise when brak­ing.

POSSIBLE CAUSE

1. Sanding belt seam is open or dam­aged.

1. Workpiece is not supported as it
comes out of sander.

2. Pressure rollers not set correctly.

1. Worn sanding belt.

2. Rear pressure roller too low.

1. Sanding belt grit too small for par­ticular job.

2. Excessive depth of cut.

3. Wood is too moist.

1. Low air pressure.

2. Air leaks in system.

1. Air eye fork clogged.

2. Oscillation return valve closed.

3. Oscillation timing incorrect.

1. Sanding belt is not tensioned.

2. Limit switches engaged.

3. Emergency stop plate engaged.

1. Platen adjusted incorrectly, above
bottom surface level of lower sand­ing rollers.

2. Sanding belt loaded with sawdust.

3. Sanding belt worn out.

1. Conveyor rollers moved out of
adjustment.

1. Conveyor rollers have incorrect
tension.

2. Conveyor rollers contaminated with
dirt or dust.

1. Air pressure incorrect.

2. Air leak in system.

3. Brake rotor contaminated with oil.

4. Brake pads worn out.

1. Brakes severely worn out.

CORRECTIVE ACTION

1. Repair or replace sanding belt.

1. Hold workpiece up with your hands as it comes out, or set up an out­feed table for your workpiece after it comes out.

2. Set pressure rollers as described in Section 8: Service Adjustments.

1. Replace sanding belt.

2. Raise rear pressure roller. (See warning in Pressure Roller sec-

tion!)

1. Replace with a coarser grit sanding belt.

2. Reduce depth of cut.

3. Allow wood to dry out.

1. Adjust air pressure to 75 PSI at primary regulator.

2. Inspect all hoses and connections for leaking air; use water on sus­pected area to detect bubbles.

1. Clean the intake hole on the air eye fork.

2. Open valve.

3. Adjust oscillation timing.

1. Tension sanding belt.

2. Center sanding belt so it is not touching the limit switches.

3. Make sure emergency stop switch is released.

1. Adjust platen on the same plane as, or lower than, bottom surface
level of lower rollers.

2. Clean sanding belt to unload sawdust.

3. Replace sanding belt with a new one.

1. Re-adjust conveyor rollers.

1. Adjust conveyor rollers to increase tension.

2. Clean conveyor rollers.

1. Adjust air pressure to 75 PSI.

2. Find and fix air leaks.

3. Clean brake rotor with automotive brake parts cleaner.

4. Replace brake pads.

1. Replace brake pads, have rotor turned (possibly replaced).

-54- G9983 15" Open-End Wide-Belt Sander

WARRANTY AND RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from

the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par­ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, spe­cial, or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the car­ton. We will not accept any item back without this number. Proof of purchase must accompany the mer­chandise.

The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.

Please feel free to write or call us if you have any questions about the machine or the manual.

Thank you again for your business and continued support. We hope to serve you again soon.

G9983 15" Open-End Wide-Belt Sander -55-

10. Which benchtop tools do you own? Check all that apply.

___1" x 42" Belt Sander ___6" - 8" Grinder
___5" - 8" Drill Press ___Mini Lathe
___8" Table Saw ___10" - 12" Thickness Planer
___8" - 10" Bandsaw ___Scroll Saw
___Disc/Belt Sander ___Spindle/Belt Sander
___Mini Jointer

___Other__________________________________________________

11. How many of the machines checked above are Grizzly? ____________

12. Which portable/hand held power tools do you own? Check all that apply.

___Belt Sander ___Orbital Sander
___Biscuit Joiner ___Palm Sander
___Circular Saw ___Portable Planer
___Detail Sander ___Saber Saw
___Drill/Driver ___Reciprocating Saw
___Miter Saw ___Router

___Other__________________________________________________

13. What machines/supplies would you like Grizzly Industrial to carry?

__________________________________________________________

__________________________________________________________

__________________________________________________________

14. What new accessories would you like Grizzly Industrial to carry?

__________________________________________________________

__________________________________________________________

__________________________________________________________

15. What other companies do you purchase your tools and supplies from?

__________________________________________________________

__________________________________________________________

16. Do you think your purchase represents good value?

___Yes ___No

17. Would you recommend Grizzly Imports to a friend?

___Yes ___No

18. Would you allow us to use your name as a reference for Grizzly customers

in your area? Note: We never use names more than three times.

___Yes ___No

19. Comments:_________________________________________________

__________________________________________________________

__________________________________________________________

__________________________________________________________

__________________________________________________________

1. How did you learn about us?

___Advertisement ___Friend
___Catalog ___Card Deck
___World Wide Web

___Other__________________________________________________

2. Which of the following magazines do you subscribe to.

___American Woodworker ___Practical Homeowner
___Cabinetmaker ___Shop Notes
___Family Handyman ___Today’s Homeowner
___Fine Homebuilding ___WOOD
___Fine Woodworking ___WoodenBoat
___Home Handyman ___Woodshop News
___Journal of Light Construction ___Woodsmith
___Old House Journal ___Woodwork
___Popular Mechanics ___Woodworker
___Popular Science ___Woodworker’s Journal
___Popular Woodworking ___Workbench

___Other__________________________________________________

3. Which of the following woodworking/remodeling shows do you watch?

___Backyard America ___The New Yankee Workshop
___Home Time ___This Old House
___The American Woodworker ___Woodwright’s Shop

___Other__________________________________________________

4. What is your annual household income?

___$20,000-$29,999 ___$60,000-$69,999
___$30,000-$39,999 ___$70,000-$79,999
___$40,000-$49,999 ___$80,000-$89,999
___$50,000-$59,999 ___$90,000 +

5. What is your age group?

___20-29 ___50-59
___30-39 ___60-69
___40-49 ___70 +

6. How long have you been a woodworker?

___0 - 2 Years ___8 - 20 Years
___2 - 8 Years ___20+ Years

7. How would you rank your woodworking skills?

___Simple ___Advanced
___Intermediate ___Master Craftsman

8. What stationary woodworking tools do you own? Check all that apply.

___Air Compressor ___Panel Saw
___Band Saw ___Planer
___Drill Press ___Power Feeder
___Wide-belt Sander ___Radial Arm Saw
___Dust Collector ___Shaper
___Horizontal Boring Machine ___Spindle Sander
___Jointer ___Table Saw
___Lathe ___Vacuum Veneer Press
___Mortiser ___Wide Belt Sander

___Other__________________________________________________

9. How many of your woodworking machines are Grizzly? _____________

Name ____________________________________________________________________________________
Street ____________________________________________________________________________________
City ______________________________________________________________State________Zip_________
Phone Number_______________________E-Mail_______________________FAX________________________

MODEL #____________________Serial#_______________________Order#_____________________________

The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop better products and services. Of course,
all information is strictly confidential.

WARRANTY CARD

CUT ALONG DOTTED LINE

FOLD ALONG DOTTED LINE

FOLD ALONG DOTTED LINE

GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069

Place

Stamp

Here

TAPE ALONG EDGES--PLEASE DO NOT STAPLE

Name_______________________________

Street_______________________________

City______________State______Zip______

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