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: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
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!
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