Grizzly Sander G0644 User Manual

MODEL G0644

15" OPEN-END

WIDE BELT SANDER

OWNER'S MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#TS9790 PRINTED IN TAIWAN

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Table of Contents

INTRODUCTION............................................... 2

SECTION 5: ACCESSORIES......................... 26

Foreword........................................................ 2

Contact Info ................................................... 2

Machine Data Sheet ...................................... 3

Basic Identification......................................... 5

Operation Control Identification ..................... 6

SECTION 6: MAINTENANCE......................... 27

Schedule...................................................... 27

Cleaning....................................................... 27

Lubrication ................................................... 27

Air Regulator/Filter....................................... 28

SECTION 1: SAFETY....................................... 7

Safety Instructions for Machinery .................. 7

Safety Instructions for Wide Belt Sanders..... 9

SECTION 7: SERVICE ................................... 29

Troubleshooting ........................................... 29

Conveyor Belt Tensioning............................ 31

Conveyor Belt Tracking ............................... 32

Gib Adjustment ............................................ 32

Sanding Drum & Conveyor Parallelism ....... 33

Air Pressure Safety Switch.......................... 34

Adjusting Depth Of Cut Safety Bar.............. 34

Adjusting Pressure Rollers .......................... 35

Replacing Conveyor Belt ............................. 36

Electrical Wiring Overview........................... 38

Electrical Box & Control Panel Wiring Diagram

SECTION 2: CIRCUIT REQUIREMENTS ...... 10

220V Operation............................................ 10

SECTION 3: SETUP ....................................... 11

Setup Safety ................................................ 11

Items Needed for Setup............................... 11

Unpacking.................................................... 11

Inventory ...................................................... 12

Hardware Recognition Chart ....................... 13

Clean Up...................................................... 14

Site Considerations...................................... 14

Mounting to Shop Floor ............................... 15

Moving & Assembling Sander ..................... 15

Dust Collection............................................. 17

Test Run ...................................................... 18

Recommended Adjustments........................ 19

Electrical Components................................. 40

Air System Diagram..................................... 42

Parts Breakdown ......................................... 43

Label Placement & List................................ 46

WARRANTY AND RETURNS ........................ 49

SECTION 4: OPERATIONS ........................... 20

Operation Safety.......................................... 20

Sanding Overview........................................ 20

Choosing Sandpaper................................... 21

Sanding Belt Replacement .......................... 21

Conveyor Speed.......................................... 23

Depth of Cut................................................. 23

Sanding Tips................................................ 24

Sanding Belt Oscillation Rate...................... 25

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INTRODUCTION

Contact Info

Foreword

If you have any comments regarding this manual,

please write to us at the address below:

We are proud to offer the Model G0644 15"

Open-End Wide Belt Sander. The open end

design of the Model G0644 can sand stock up to

30" wide. Depth of cut is precisely controlled with

the elevation handwheel and scale, and the feed

rate is set with the conveyor variable speed dial

and monitored with the amp load meter. For qual-

ity sanding finish, the pneumatic system automati-

cally oscillates the sanding belt from side-to-side.

Grizzly Industrial, Inc.

Technical Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [email protected]

We stand behind our machines. If you have any

service questions or parts requests, please call or

write us at the location listed below.

This machine is part of a growing Grizzly family of

fine woodworking machinery. When used accord-

ing 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.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: (570) 546-9663

Fax: (800) 438-5901

E-Mail: [email protected]

Web Site: http://www.grizzly.com

The specifications, drawings, and photographs

illustrated in this manual represent the Model

G0644 when the manual was prepared. However,

owing to Grizzly’s policy of continuous improve-

ment, 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. Visit our site often to check for the

latest updates to this manual!

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Machine Data Sheet

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machine data sheet

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Basic Identification

Figure 1. Model G0644 identification.

A. Sanding Cabinet

B. Dust Port 4"

C. Elevation Handwheel

D. Control Panel & Electrical Box

E. Air Regulator

G. Elevation Lock Lever

H. Cabinet Stand

I. Conveyor

J. Depth Of Cut Safety Bar

K. Sanding Belt Access Door

F. Motor 3 HP

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Operation Control Identification

Figure 2. Model G0644 operation control identification.

A. Upper Sanding Roller

B. Left Oscillation Disc

C. Oscillation Control Valve

D. Elevation Handwheel

E. Amperage Load Chart

F. Amp Load Meter

I. Emergency Stop Button

J. Conveyor Speed Dial

K. Conveyor ON/OFF Switch w/Disabling Key

L. Elevation Scale & Pointer

M. Elevation Lock Lever

N. Sanding Belt Tension Lock Lever

O. Sanding Drum

G. Power Light

H. Sanding Motor ON Button

P. Sanding Belt Tension Lever

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Safety Instructions for Machinery

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Safety Instructions for Wide Belt Sanders

1. READ THIS MANUAL. This manual con-

tains proper operating and safety proce-

dures for this machine.

7. WORKPIECE QUANTITY. A fast-moving

workpiece ejected from the sander could

seriously injure anyone standing near. Never

sand two or more workpieces side-by-side.

Since workpieces are never exactly the

same thickness, one of them may be thrown

from the sander at a high rate of speed.

2. KICKBACK. Kickback is typically defined

as the high-speed expulsion of stock from

the machine. Kickback can cause serious

personal injury to the operator or bystand-

ers. Until you have a clear understanding

how kickback can occur when using this

machine, DO NOT operate this sander!

8. WORKPIECE INSPECTION. Nails, sta-

ples, knots, or other imperfections in the

workpiece can be dislodged and thrown

from the sander at a high rate of speed into

the operator or bystanders. Never attempt to

sand stock that has imperfections or embed-

ded foreign objects.

3. WORKPIECE FEED RATE. Jamming the

workpiece into the sander or against the

sanding belt can cause it to kickback into the

operator. Always firmly hold the workpiece

and ease it into the sander at the same rate

as the conveyor.

9. BODY PLACEMENT. In case of kickback,

avoid personal injury by always keeping

your body to the side of the sanding path.

4. AVOIDING ENTANGLEMENT. Becoming

entangled in the moving parts of this

machine can cause pinching and crushing

injuries. To avoid these hazards, DO NOT

wear loose clothing, gloves, or jewelry, and

tie back long hair. Keep all guards in place,

and cabinet doors closed and secure.

10. WORKPIECE SIZE. Attempting to sand

stock that is thinner, narrower, or shorter

than is recommended in this manual can

cause kickback or damage to the machine.

Always make sure the workpiece is above

the minimum size requirements for this

sander.

5. HAND PLACEMENT. The sanding belt can

remove a large amount of flesh in a few

seconds. Always keep hands away from

the sanding belt. Avoid pinching injuries

by never putting your hand between the

workpiece and the machine.

11. POWER DISCONNECT. Accidental start

up or contact with live wiring could result

in serious personal injury or death. Always

disconnect the sander from power when

changing the sanding belt, performing main-

tenance, or servicing the machine.

6. UNATTENDED MACHINE. There is risk of

unintentional contact with the sanding belt

when it is running, resulting in serious injury.

Never leave this machine running unat-

tended.

12. EXPERIENCING DIFFICULTY. If at any

time you are experiencing difficulties per-

forming the intended operation, stop using

the machine! Contact our Technical Support

Department at (570) 546-9663.

No list of safety guidelines can be complete. Every shop environment is different. Always con-

sider safety first, as it applies to your individual working conditions. Use this and other machin-

ery with caution and respect. Failure to do so could result in serious personal injury, damage to

equipment, or poor work results.

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SECTION 2: CIRCUIT REQUIREMENTS

Power Connection Device

220V Operation

The type of plug required to connect your machine

to power depends on the type of service you cur-

rently have or plan to install. We recommend

using the plug shown in Figure 3.

Serious personal injury could occur if you

connect the machine to power before com-

pleting the setup process. DO NOT connect

the machine to the power until instructed

later in this manual.

Electrocution or fire could

result if machine is not

grounded and installed in

compliance with electrical

codes. Compliance MUST

be verified by a qualified

electrician!

Figure 3. NEMA 6-20 plug and receptacle.

Extension Cords

Using extension cords may reduce the life of the

motor. Instead, place the machine near a power

source. If you must use an extension cord:

Full Load Amperage Draw

Motor Draw at 220V .............................. 15 Amps

•

Use at least a 12 gauge cord that does not

exceed 50 feet in length!

Circuit Requirements

The extension cord must also have a ground

wire and plug pin.

You MUST connect your machine to a grounded

circuit that is rated for the amperage given below.

Never replace a circuit breaker on an existing cir-

cuit with one of higher amperage without consult-

ing a qualiﬁed electrician to ensure compliance

with wiring codes. If you are unsure about the

wiring codes in your area or you plan to con-

nect your machine to a shared circuit, consult

a qualified electrician.

A qualified electrician MUST size cords over

50 feet long to prevent motor damage.

Minimum 220V Circuit ...........................20 Amps

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SECTION 3: SETUP

Setup Safety

Items Needed for

Setup

The following items are needed to complete the

setup process, but are not included with your

machine:

This machine presents

serious injury hazards

to untrained users. Read

through this entire manu-

al to become familiar with

the controls and opera-

tions before starting the

machine!

Description

Qty

•

Assistant..................................................... 1

Safety Glasses (for each person) .............. 1

Wrench ¹⁄2".................................................. 1

Dust Collection System.............................. 1

4" Dust Hose (length as needed)............... 1

4" Hose Clamp ........................................... 1

Air Compressor .......................................... 1

Air Hose (length as needed) ...................... 1

Forklift (Minimum Rating of 1000 lbs) ........ 1

Wear safety glasses dur-

ing the entire setup pro-

cess!

Unpacking

This machine and its com-

ponents are very heavy.

Get lifting help or use

power lifting equipment

such as a forklift to move

heavy items.

Your machine was carefully packaged for safe

transportation. Remove the packaging materials

from around your machine and inspect it. If you

discover the machine is damaged, please imme-

diately call Customer Service at (570) 546-9663

for advice.

Save the containers and all packing materials for

possible inspection by the carrier or its agent.

Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condi-

tion of your shipment, inventory the contents.

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Inventory

The following is a description of the main compo-

nents shipped with your machine. Lay the compo-

nents out to inventory them.

Note: If you can't find an item on this list, check

the mounting location on the machine or examine

the packaging materials carefully. Occasionally

we pre-install certain components for shipping

purposes.

Box 1: (Figure 4)

Qty

Figure 5. Model G0644 box 2 inventory.

A. Sanding Assembly...................................... 1

B. Sanding Belt 16" x 48" (not shown) ........... 1

C. Conveyor Front Roller Guard (not shown). 1

If any nonproprietary parts are missing (e.g. a

nut or a washer), we will gladly replace them; or

for the sake of expediency, replacements can be

obtained at your local hardware store.

Box 2: (Figure 5)

D. Cabinet Stand............................................. 1

Qty

SUFFOCATION HAZARD!

Immediately discard all plas-

tic bags and packing materi-

als to eliminate choking/suf-

focation hazards for children

and animals.

Figure 4. Model G0644 box 1 inventory.

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Hardware Recognition Chart

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Clean Up

Site Considerations

The unpainted surfaces are coated with a waxy

oil to prevent corrosion during shipment. Remove

this protective coating with a solvent cleaner or

citrus-based degreaser such as Grizzly’s G7895

Citrus Degreaser. To clean thoroughly, some parts

must be removed. For optimum performance

from your machine, clean all moving parts or

sliding contact surfaces. Avoid chlorine-based

solvents, such as acetone or brake parts cleaner

that may damage painted surfaces. Always follow

the manufacturer’s instructions when using any

type of cleaning product.

Floor Load

Refer to the Machine Data Sheet on Page 3 for

the weight and footprint specifications of your

machine. Some residential floors may require

additional reinforcement to support both the

machine and operator.

Placement Location

Consider existing and anticipated needs, size of

material to be processed through each machine,

and space for auxiliary stands, work tables or

other machinery when establishing a location for

your new machine. See Figure 7 for the minimum

working clearances.

Gasoline and petroleum

products have low flash

points and can explode

or cause fire if used to

clean machinery. DO

NOT use these products

to clean the machinery.

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Many cleaning solvents

are toxic if inhaled.

Minimize your risk by only

using these products in a

well ventilated area.

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Figure 7. Minimum working clearances.

G7895—Grizzly Citrus Degreaser

This natural, citrus-based degreaser is a great

solution for removing export grease, and it’s much

safer to work around than nasty solvents.

Children and visitors may be

seriously injured if unsuper-

vised around this machine.

Lock entrances to the shop

or disable start switch or

power connection to prevent

unsupervised use.

Figure 6. Grizzly citrus degreaser.

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Mounting to Shop

Floor

Moving &

Assembling Sander

The center of gravity of the assembled sander is

above the middle of the machine. Although not

required, we strongly recommend that you mount

your new machine to the floor to prevent tipping.

Because this is an optional step and floor mate-

rials may vary, floor mounting hardware is not

included.

The Model G0644 is a

heavy machine. Serious

personal injury may occur

if safe moving methods

are not used. To be safe,

get assistance and use

power equipment to move

the shipping boxes and

remove the machine from

the boxes.

Bolting to Concrete Floors

Anchor studs and lag bolts (Figure 8) are two

popular methods for anchoring an object to a con-

crete floor. We suggest you research the many

options and methods for mounting your machine

and choose the best that fits your specific applica-

tion.

To move the machine:

1. Mount the cabinet stand to the floor in your

prepared location using the four mounting

holes found inside the cabinet.

NOTICE

Anchor studs are stronger and more perma-

nent alternatives to lag bolts; however, they

will stick out of the floor, which may cause

a tripping hazard if you decide to move your

machine.

2. Remove the four M8-1.25 x 25 hex bolts

and flat washers from the top of the cabinet

stand.

3. Place the forklift forks in a stable position

under the conveyor, as shown in Figure 9.

Anchor Stud

Lag Anchor & Bolt

Figure 8. Typical fasteners for mounting to

concrete floors.

Figure 9. Forklift forks positioned under sanding

assembly.

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4. With an assistant to steady the sanding

assembly on the forks, lift and move it into

position over the cabinet stand so that the

mounting holes line up (see Figures 10 &

11).

5. Secure the sanding assembly to the cabinet

stand with the four hex bolts and flat washers

removed in Step 2.

6. Remove the four 10-24 x 3/8" cap screws and

flat washers from the front of the conveyor,

slide the conveyor front roller guard onto the

conveyor, and secure it with the cap screws

and flat washers (see Figure 10).

Conveyor Front

Roller Guard

7. Open the sanding belt access door on the

left side of the machine, and remove the red

shipping brace securing the sanding drum

and the conveyor assembly (see Figure 12).

Figure 10. Mounting bolts and conveyor front

roller guard (left side).

Mounting Bolts

Figure 12. Location of the shipping brace.

Figure 11. Mounting bolts (right side).

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8. Connect a source of compressed air to the

air regulator inlet valve on the back of the

machine.

Dust Collection

Note: The source of compressed air must

provide a steady supply of clean, dry air at 57

PSI or more, not to exceed 120 PSI.

This sander creates substantial amount of

wood dust while operating. Failure to wear

a respirator rated for wood dust and use an

adequate dust collection system when oper-

ating this machine can result in short and

long-term respiratory illness.

Exceeding 120 PSI may result in unpredict-

able operation of the sander and damage to

the pneumatic system.

9. Lift up on the air regulator adjusting knob

(see Figure 13), and turn the knob so that the

air pressure dial reads 57 PSI, then push the

adjusting knob down to lock the setting.

Minimum CFM at Dust Port: 400 CFM

Do not confuse this CFM recommendation with

the rating of the dust collector. To determine

the CFM at the dust port, you must consider

these variables: (1) CFM rating of the dust col-

lector, (2) hose type and length between the

dust collector and the machine, (3) number

of branches or wyes, and (4) amount of other

open lines throughout the system. Explaining

how to calculate these variables is beyond the

scope of this manual. Consult an expert or pur-

chase a good dust collection "how-to" book.

Air Inlet Valve

Adjusting

Knob

Air Pressure Dial

To connect a dust collection hose:

1. Fit a 4" dust hose over the dust port on top

of the machine, as shown in Figure 14, and

secure it in place with a hose clamp.

Figure 13. Air regulator unit on back of sander.

2. Tug the hose to make sure it does not come

off. Note: A tight fit is necessary for proper

performance.

Figure 14. Dust hose attached to dust port.

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Test Run

Once the assembly is complete, test run your

machine to make sure it runs properly and is

ready for regular operation.

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Figure 15. Resetting the EMERGENCY STOP

The test run consists of verifying the following:

1) The motors power up and run correctly, 2) the

EMERGENCY STOP button safety feature works

correctly, and 3) the conveyor switch disabling

mechanism works correctly.

switch.

7. Push the Sanding Motor ON button.

—When operating correctly, the machine

runs smoothly with little or no vibration or

rubbing noises.

If, during the test run, you cannot easily locate

the source of an unusual noise or vibration,

stop using the machine immediately, then review

Troubleshooting on Page 28.

—Investigate and correct strange or unusual

noises or vibrations before operating the

machine further. Always disconnect the

machine from power when investigating or

correcting potential problems.

If you cannot find a remedy, contact our Tech

Support at (570) 546-9663 for assistance.

To test run the machine:

Note: You will hear a metallic "thump" when

the sanding belt changes oscillation direction.

This noise is normal.

1. Read and follow the safety instructions at the

beginning of the manual, and make sure the

machine is setup properly.

8. Press the EMERGENCY STOP button to

stop the machine.

2. Clear away all tools and objects used during

setup.

9. WITHOUT resetting the switch, press the

Sanding Motor ON button. The machine

should not start.

3. Connect a compressed air source to the air

regulator, and set the air pressure dial at 57

PSI.

—If the machine does not start, the

EMERGENCY STOP button safety feature

is working correctly.

4. Confirmthesandingbeltisinstalled, tensioned

properly (refer to Sanding Belt Replacement

on Page 20 for detailed instructions), and

the sanding belt access door is closed and

secured.

—If the machine does start (with the stop

button pushed in), immediately disconnect

power to the machine. The EMERGENCY

STOP button safety feature is not working

correctly. This safety feature must work

properly before proceeding with the rest of

the test run. Call Tech Support for help.

5. Connect the machine to the power source—

the Power Light lamp should light.

6. Push the EMERGENCY STOP button in,

then twist it clockwise so it pops out. When

the button pops out, the switch is reset and

ready for operation (see Figure 15).

10. Reset the EMERGENCY STOP button and

turn the sanding motor ON.

Note: The sanding motor must be ON before

the conveyor can be started.

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11. Turn the conveyor ON and verify that it oper-

Recommended

Adjustments

ates correctly.

12. Turn the conveyor belt OFF, and remove the

switch disabling key, as shown in Figure 16.

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, some of these adjustments may

need to be repeated to ensure optimum results.

Keep this in mind as you start to use your new

drum sander.

Step-by-step instructions for these adjustments

can be found in the SERVICE section of this

manual.

Figure 16. Removing switch key from conveyor

toggle switch.

13. Try to start the conveyor by flipping the toggle

•

Conveyor Belt Tensioning (Page 30).

Conveyor Belt Tracking (Page 31).

Gib Adjustment (Page 31).

switch to the ON position.

—If the conveyor does not start, the switch

disabling feature is working as designed.

—If the conveyor starts, immediately stop the

machine. The switch disabling feature is

not working correctly. This safety feature

must work properly before proceeding with

regular operations. Call Tech Support for

help.

Sanding Drum & Conveyor Parallelism (Page

32).

•

Air Pressure Safety Switch (Page 33).

Depth Of Cut Safety Bar (Page 33).

Pressure Rollers (Page 34).

14. Press the Emergency Stop button to turn

the sanding motor OFF, re-install the switch

disabling key, and reset the Emergency Stop

button.

15. Disconnect the compressed air from the

sander and attempt to turn the sanding motor

ON.

—If the machine does not start, the air pres-

sure safety switch is working correctly.

—If the machine does start (with the air pres-

sure disconnected), immediately discon-

nect power to the machine. The air pres-

sure safety switch is not working correctly.

This safety feature must work properly

before proceeding with the rest of the test

run. Call Tech Support for help.

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SECTION 4: OPERATIONS

Operation Safety

Sanding Overview

To begin the sanding operation:

1. Connect the sander to the compressed air,

Damage to your eyes, lungs, and ears could

result from using this machine without

proper protective gear. Always wear safety

glasses, a respirator, and hearing protection

when operating this machine.

and adjust the air regulator for 57 PSI.

2. Make sure the workpiece is clean and free

of any defects or foreign materials that might

cause kickback or damage the sander.

3. Start the dust collection system.

4. Set the elevation for the correct depth of cut

(Page 22).

5. Turn the sanding motor ON.

6. Turn the conveyor ON and correctly adjust

the conveyor speed for your operation

(Page 22).

Loose hair and cloth-

ing could get caught in

machinery and cause seri-

ous personal injury. Keep

loose clothing and long

hair away from moving

machinery.

7. Stand to the side of the sanding path, then

firmly hold the workpiece and ease it into the

sander at the same rate as the conveyor.

8. While standing to the side of the sanding

path, let the conveyor feed the workpiece out

of the sander and into your hands.

NOTICE

If you have never used this type of machine

or equipment before, WE STRONGLY REC-

OMMEND that you read books, trade maga-

zines, or get formal training before begin-

ning any projects. Regardless of the con-

tent in this section, Grizzly Industrial will

not be held liable for accidents caused by

lack of training.

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choosing sandpaper

sanding belt replacement

Sanding Belt

Replacement

Choosing Sandpaper

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

To change the sanding belt:

There are many types of sanding belts to choose

from. We recommend aluminum oxide for general

workshop environments. Figure 17 lists groups of

abrasives into different classes and shows which

grits fall into each class.

1. DISCONNECT THE SANDER FROM

POWER!

2. Open the sanding belt access door.

Grit

Class

Usage

3. Loosen the tension lock lever shown in

Figure 18.

Extra

Rough sawn boards,

Coarse thickness sanding, and

glue removal.

Tension

Lock lever

Coarse Thickness sanding and

glue removal.

80–100

Medium Removing planer marks

and initial finish sanding.

120–180 Fine

Finish sanding.

Sanding Belt

Tension Lever

Figure 17. Sandpaper usage chart.

The general rule of thumb is to sand a workpiece

with progressively higher grit numbers, with no

one grit increase of more than 50. Avoid skipping

grits; the larger the grit increase, the harder it will

be to remove the scratches from the previous

grit.

Figure 18. Sanding belt tension controls.

Ultimately, the type of wood you use and your

stage of finish will determine the best grit types to

install on your sander.

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4. Use the sanding belt tension lever to remove

6. Slide the new sanding belt onto the upper

sanding roller and sanding drum, then posi-

tion it on the upper sanding roller so that it is

just past the left oscillation disc, as shown in

Figure 20.

the tension on the sanding belt.

a. Slightly lift the tension lever, and move it

to the right.

b. Use moderate force to push the tension

lever down, then secure it under the bot-

tom catch, as shown in Figure 19.

Left

Oscillation

Disc

Top Catch

Sanding

Belt

Bottom Catch

Figure 20. Correct installation position of

Sanding

Belt

sanding belt.

Direction

7. When you have the sanding belt evenly posi-

tioned between the oscillation discs, push

down on the sanding belt tension lever,

then move it to the right and up onto the top

catch.

Figure 19. Sanding belt tension lever secured

under bottom catch.

5. Pull the sanding belt from the machine.

Note: Some sanding belts are designed to

sand in only one direction and have arrows

printed on the inside of the belt to show that

direction. The front of the sanding drum sup-

port has an arrow pointing up showing the

direction the sanding belt will travel when in

operation (see Figure 19). Match these two

directions as you install the sanding belt.

Note: The Model G0644 automatically applies

the correct tension to the sanding belt when

the tensioning lever is secured on the top

catch.

8. Re-tighten the tension lock lever to secure

the sanding belt tension.

9. Close and secure the sanding belt access

door before starting the sanding motor.

The moving sanding belt and roller/drum are

an entanglement hazard. To avoid the risk

of serious personal injury, always close and

secure the sanding belt access door before

starting the sanding motor.

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depth of cut

conveyor feed rate

Conveyor Speed

Depth of Cut

The conveyor speed dial (see Figure 21) adjusts

the feed rate from 5–17 FPM. The correct speed

to use depends on the type of stock you are using

(hardwood vs. softwood) and the stage of finish

for the workpiece.

Recommended maximum depth of cut

.......................... Approximately ¹⁄64" (0.016")

The optimum depth of cut will vary based on

the type of wood, feed rate, and sandpaper grit.

Attempting to remove too much material can

cause jamming, wood burning, rapid paper wear,

paper tearing, poor finish, or belt slippage.

As a general rule, a slower feed rate will sand

the surface smoother, but runs the risk of burning

the wood; a faster feed rate will remove material

faster, but runs the risk of overloading the motor.

Use trial-and-error to determine the correct feed

rate for your operation.

Under most conditions, the sanding depth should

not exceed ⁄64" or 0.016" (approximately ⁄3 turn

of the elevation handwheel) for each pass. Each

full turn of the elevation handwheel raises/lowers

the sanding belt approximately 0.025" from the

conveyor belt.

When properly adjusted, the depth of cut safety

bar (see Figure 22) is an excellent tool for setting

the first depth of cut.

Figure 21. Conveyor speed dial.

Figure 22. Depth of cut safety bar.

Position the workpiece and sanding cabinet so

that the bottom of the safety bar just touches the

workpiece. This will set the sanding belt approxi-

mately ¹⁄64" lower than the workpiece. Then rotate

the elevation handwheel one full turn clockwise to

raise the sanding belt high enough so that the first

pass will take off any high spots. For additional

passes, rotate the elevation handwheel ²⁄3 of turn

clockwise to lower the sanding belt approximately

¹⁄64" or 0.016".

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The amp load meter on the control panel (see

Figure 23) shows how much amperage the sand-

ing motor is drawing for the operation. When the

depth of cut or conveyor feed rate becomes too

great, the sanding motor will draw an excessive

power load, which may trip the circuit breaker or

damage the machine.

Sanding Tips

Follow these instructions to ensure safe sanding

operation and quality results:

•

Replace the sandpaper with a higher grit

to achieve a finer finish (refer to Choosing

Sandpaper on Page 20).

•

When making multiple passes on the

workpiece, avoid lowering the sanding belt

more than ⁄64" (0.016" or ⁄3 of a turn of the

handwheel) for any one pass.

•

Feed boards into the sander at different points

on the conveyor to maximize sandpaper life

and prevent uneven conveyor belt wear.

DO NOT sand boards less than 6" long, 2"

wide, or ⁄4" thick to avoid possible kickback,

or damage to the workpiece or sander.

Figure 23. Amp load meter.

Extend the life of the sandpaper by regularly

using a PRO-STICK^©sanding pad (refer to

ACCESSORIES on Page 25).

NOTICE

DO NOT VOID THE WARRANTY! Keep the

amp load within the green SAFE range. If

you operate the sander above 14 amps or in

the red WARNING range, capacitor or motor

failure may occur and will not be covered

under warranty.

Starting the sanding motor with a workpiece

in contact with the sanding belt could cause

it to kickback into the operator resulting

in serious personal injury. Never start the

sander with a workpiece or any object on the

conveyor belt.

Always start with a shallow depth of cut to remove

any high spots, then carefully increase the cut

depth. Keep the amp load in the SAFE range dur-

ing the entire operation (see Figure 24).

Figure 24. Amp load chart.

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•

When sanding workpieces with irregular

widths, take very light sanding passes to pre-

vent gouges. As the width of the workpiece

decreases, the load on the sanding motor will

reduce and the sanding drum will speed up,

causing a gouge.

The rate of sanding belt oscillation can be

changed by adjusting the oscillation stops shown

in Figure 25.

Stops

Jam Nut

•

DO NOT edge sand boards. This can cause

boards to kickback, and may result in serious

personal injury. Edge sanding boards also

can cause damage to the conveyor belt and

sandpaper.

Feed the workpiece into the sander at an

angle to maximize stock removal and sand-

paper effectiveness, but feed the workpiece

straight to reduce sandpaper grit scratches

for the finish passes.

Hex Bolt

Figure 25. Sanding belt oscillation stops.

When sanding workpieces with a bow or

crown, place the high point up, which pre-

vents the workpiece from rocking, and take

very light passes.

To adjust the sanding belt oscillation rate:

1. DISCONNECT THE SANDER FROM

POWER!

2. Open the sanding belt access door and iden-

tify the oscillation stops shown in Figure 25.

DO NOT sand more than one board at a time

side-by-side. Minor variations in thickness

can cause one board to be propelled at a

high speed of rate by the sanding belt and

could result in serious personal injury.

3. Use a 12mm wrench to loosen the oscillation

stop jam nuts, and adjust the oscillation stop

hex bolts equally in or out to change the oscil-

lation rate.

Note: The farther in towards the center you

adjust the hex bolt, the slower the sanding

belt will oscillate for that direction of move-

ment. Experiment to find the right oscillation

rate for your operation.

Sanding Belt

Oscillation Rate

4. Re-tighten the jam nuts, and close the access

To prevent sanding "streaks" in the workpiece,

the sanding belt oscillates from side-to-side on

the sanding drum during operation. This action

is caused by the twisting motion of the upper

sanding roller, and is automatically controlled by

a pneumatic piston and lever system inside the

sanding cabinet.

door.

5. Connect the machine to power, start the

sanding motor, and check the oscillation rate.

Repeat Steps 1–4 if necessary.

We recommend that one oscillation cycle (the

movement of the sanding belt from one side to the

other) should be 4–6 seconds.

NOTICE

The sanding belt oscillation system requires

compressed air connected to the machine

and adjusted to 57 PSI. Without this com-

pressed air, the sander will not operate.

Note: You will hear a metallic "thump" when the

sanding belt changes oscillation direction. This

noise is normal.

-25-

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ACCESSORIES

SECTION 5: ACCESSORIES

G8027—1 HP Dust Collector

G8982—Shop Fox Roller Table

A great little workhorse at an incredible price!

This is a great machine for sanders, router tables,

shapers, and other work. It's also very portable,

so you can take it to the job site. Air suction

capacity: 500 CFM.

Use this versatile roller table wherever you need

extra workpiece support. Features all steel welded

construction and measures 19" x 65" long. Comes

with 9 ball bearing rollers and has four indepen-

dently adjustable legs for any leveling require-

ment. Adjustable in height from 26³⁄8" to 44¹⁄8".

Figure 28. G8982 Shop Fox roller table.

Aluminum Oxide Sanding Belts 16"W x 48"L

Siawood TopTec sanding belts provide the advan-

tages of: high stock removal rates in coarse grit

sizes when sanding soft and hard wood; high

surface quality using fine grit sizes; low dust

adhesion on the abrasive belt, work piece, and

machine, thanks to the anti-static treatment; appli-

cation-specific optimization of the belt joints; and

the long-term use provided by sturdy backing.

The end result? Perfect surface quality!

Figure 26. G8027 dust collector.

H2845—PRO-STICK^®Sanding Pad

Extend the life of your sandpaper! Just feed this

crepe-rubber cleaning pad through your drum

sander to remove dust build-up from the sandpa-

per without damage. 15" X 20" X 1¹⁄8

H8739—60 Grit

H8740—80 Grit

H8741—100 Grit

H8742—120 Grit

H8743—150 Grit

H8744—220 Grit

Figure 27. PRO-STICK^®sanding pad.

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lubrication

SECTION 6: MAINTENANCE

Lubrication

Always disconnect power

to the machine before

performing maintenance.

Failure to do this may

result in serious person-

al injury.

The bearings are factory lubricated and sealed

and require no further lubrication. Simply leave

them alone unless they need replacement.

The devices that do require lubrication are the

elevation dovetail way and gears. Keep these

devices adequately lubricated so that elevation

adjustments move smoothly.

Schedule

To lubricate the elevation gibs:

For optimum performance from your machine,

follow this maintenance schedule and refer to any

specific instructions given in this section.

1. DISCONNECT THE SANDER FROM

POWER!

Daily:

2. Raise and lower the sanding cabinet to

access the entire length of the front and rear

dovetail way (see Figure 29).

•

Check/tighten loose mounting bolts.

Check/replace damaged or worn sanding

belt.

•

Check and repair/replace worn or damaged

wires.

Check/resolve any other unsafe condition.

Bi-Monthly:

Rear

Elevation

Way

•

Check/lubricate elevation dovetail way.

Check/lubricate Elevation gear.

Check/empty air regulator filter reservoir.

Cleaning

Vacuum excess sawdust, and wipe off the remain-

ing dust with a dry cloth.

Figure 29. Elevation dovetail way on rear of the

sander.

Use warm soapy water to clean the conveyor belt.

DO NOT use corrosive or solvent-base cleaners.

3. Clean off any debris from the dovetail way

and apply a thin coat of light machine oil.

Extend the life of the sandpaper by regular-

ly using a PRO-STICK^©sanding pad (refer to

ACCESSORIES on Page 25).

4. Move the sanding cabinet through its entire

range of motion to evenly distribute the oil.

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To lubricate the elevation gears:

Air Regulator/Filter

1. DISCONNECT THE SANDER FROM

POWER!

The air regulator filters the incoming compressed

air and deposits the collected water in the filter

reservoir (see Figure 31).

2. Use a 4mm hex wrench to loosen the set

screw in the elevation handwheel hub, then

remove the handwheel to access the eleva-

tion gears, as shown in Figure 30.

Drain Valve

Filter Reservoir

Figure 31. Air regulator filter reservoir and drain

valve.

Figure 30. Elevation gears (elevation handwheel

To empty the filter reservoir, make sure there is

incoming air pressure and press the drain valve

up. This will release a flow of air and the collected

water.

removed).

3. Apply a small amount of multi-purpose grease

on the gears.

4. Reinstall the handwheel, then move the

sanding cabinet through its entire range of

movement to evenly distribute the lubricant.

-28-

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troubleshooting

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-

ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical

Support at (570) 546-9663.

Troubleshooting

Motor & Electrical

Symptom

Possible Cause

Possible Solution

Motor does not start 1. Compressed air to the machine is not at 57 1. Connect clean, dry compressed air to the machine at

or a breaker trips.

PSI.

57 PSI.

2. Sanding motor is not on (conveyor motor). 2. Turn sanding motor on before conveyor motor.

3. Emergency stop push-button is engaged/ 3. Rotate clockwise slightly until it pops out/replace it.

faulty.

4. Air pressure safety switch is at fault.

4. Test/replace air pressure safety switch; adjust (Page

33).

5. Switch disabling key is removed (conveyor 5. Install switch disabling key.

motor).

6. Plug/receptacle is at fault or wired incor- 6. Test for good contacts; correct the wiring.

rectly.

7. Start capacitor is at fault.

7. Test/replace if faulty.

8. Conveyor speed dial is at fault.

9. Motor connection wired incorrectly.

10. Wall fuse/circuit breaker is blown/tripped.

8. Test/replace if faulty.

9. Correct motor wiring connections.

10. Ensure circuit size is suitable for this machine;

replace weak breaker.

11. Thermal overload relay has tripped.

11. Turn cut-out dial to increase working amps and push

the reset pin. Replace if tripped multiple times (weak

relay).

12. Contactor not getting energized/has burnt 12. Test for power on all legs and contactor operation.

contacts.

Replace unit if faulty.

13. Power supply switched OFF or is at fault.

13. Ensure power supply is switched on; ensure power

supply has the correct voltage.

14. Wiring is open/has high resistance.

14. Check for broken wires or disconnected/corroded

connections, and repair/replace as necessary.

15. Motor ON button (sanding motor) or ON/ 15. Replace faulty ON button or ON/OFF switch.

OFF switch (conveyor motor) is at fault.

16. Centrifugal switch is at fault.

17. Motor is at fault.

16. Adjust/replace the centrifugal switch if available.

17. Test/repair/replace.

Machine has vibra- 1. Motor or component is loose.

tion or noisy opera-

1. Inspect/replace stripped or damaged bolts/nuts, and

re-tighten with thread locking fluid.

2. Tighten/replace.

tion (a metallic

"thump" sound dur-

ing operation is nor-

2. Motor mount loose/broken.

3. Motor fan is rubbing on fan cover.

3. Replace dented fan cover; replace loose/damaged

fan.

mal).

4. Motor bearings are at fault.

4. Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

5. Centrifugal switch at fault.

5. Replace.

-29-

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Motor & Electrical (continued)

Symptom

Possible Cause

Possible Solution

Motor stalls or is 1. Sanding depth too aggressive.

1. Reduce sanding depth or install coarser sandpaper.

overloaded.

2. Workpiece material is not suitable for this 2. Only sand wood products; make sure moisture con-

machine.

tent is below 20% and there are no foreign materials

in the workpiece.

3. Conveyor speed too fast for task.

4. Dust collection ducting is poor.

3. Decrease conveyor speed (feed rate).

4. Seal all leaks, size ducts correctly, eliminate bends,

and refer to Dust Collection Basics Handbook (ISBN

0-9635821-2-7) for further recommendations.

5. Test/replace.

5. Air pressure brake solenoid is at fault.

6. Run capacitor is at fault.

6. Test/replace.

7. Conveyor speed dial is at fault.

8. Motor connection is wired incorrectly.

9. Plug/receptacle is at fault.

7. Test and replace if faulty.

8. Correct motor wiring connections.

9. Test for good contacts; correct the wiring.

10. Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

10. Motor bearings are at fault.

11. Machine is undersized for the task.

12. Motor has overheated.

11. Use new sandpaper with appropriate grit; reduce the

feed rate/depth of sanding.

12. Clean off motor, let cool, and reduce workload.

13. Contactor not getting energized or has poor 13. Test for power on all legs and contactor operation.

contacts.

Replace if faulty.

14. Motor is at fault.

15. Centrifugal switch is at fault.

14. Test/repair/replace.

15. Adjust/replace centrifugal switch if available.

Sanding Operation

SYMPTOM

POSSIBLE CAUSE

CORRECTIVE ACTION

Grit rubs off the belt 1. Sanding belt has been stored in an incor- 1. Store sanding belt away from extremely dry or hot

easily.

rect environment.

temperatures.

2. Sanding belt has been folded or smashed. 2. Store sanding belt flat, not folded or bent.

Sanding surfaces 1. Sanding depth too aggressive.

clog quickly or burn.

1. Reduce sanding depth or install coarser sandpaper.

2. Use different stock. Or, accept the characteristics

of the stock and plan on cleaning/replacing belts

frequently.

2. Sanding softwood.

Burn

workpiece.

marks

on 1. Using too fine of sanding grit.

2. Sanding depth too aggressive.

3. Work held still for too long.

1. Use a coarser grit sanding belt.

2. Reduce sanding depth or install coarser sandpaper.

3. Do not keep workpiece in one place for too long.

Glazed sanding sur- 1. Sanding wet stock.

faces.

1. Dry stock properly before sanding.

2. Use different stock. Or, accept the characteristics

of the stock and plan on cleaning/replacing sanding

belts frequently.

2. Sanding stock with high residue.

Workpiece slips on 1. Dirty conveyor belt.

conveyor belt. 2. Conveyor belt is worn.

1. Clean conveyor belt.

2. Replace conveyor belt.

Uneven thickness 1. Sanding drum not parallel to conveyor.

1. Adjust the conveyor to sanding drum parallelism

(Page 32).

from left to right of

board.

2. Conveyor belt is worn.

2. Replace conveyor belt.

Machine is loud, 1. Excessive depth of cut.

1. Decrease depth of cut.

2. Replace sanding belt.

overheats or bogs

down in the cut.

2. Dull sanding belt.

-30-

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tensioning & tracking

3. Turn both of the adjustment bolts clockwise

one full turn at a time until the conveyor belt

no longer slips during operation.

Conveyor Belt

Tensioning

Note: Make sure the distance of the refer-

ence measurement taken in Step 1 is the

same on both sides.

The conveyor belt may stretch with extended use,

causing it to slip on the conveyor rollers. If this

happens, the conveyor belt will need to be reten-

sioned.

—If the conveyor belt starts tracking to one

side, immediately turn the conveyor OFF

and perform the tracking procedure below.

When you tension the conveyor belt, make sure

you turn the left and right adjustment bolts in

even increments. Tensioning one side more than

the other will cause tracking problems, which will

require you to take additional steps to get the

sander operating correctly.

Note: Do not overtighten the conveyor belt.

Your goal is reach an approximate ⁄2" hang-

ing gap on the underside of the conveyor belt

(see Figure 33) and that the belt no longer

slips on the rollers.

To tension the conveyor belt:

1. Take the reference measurement shown in

Figure 32 on both sides of the conveyor.

��

Reference

Measurement

��^��

Figure 33. Correct conveyor belt hanging gap.

Jam Nut

4. Re-tighten the jam nuts to lock the adjust-

Adjusting Bolt

ment bolts in place.

Figure 32. Conveyor belt adjusting bolts (one

side shown).

2. Use a 10mm wrench to loosen the jam nuts

on both sides of the conveyor.

-31-

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gib adjustment

conveyor tracking

Conveyor Belt

Gib Adjustment

Tracking

The gib controls the accuracy of sanding cabinet

movement along the dovetail way. A tight gib

makes the movement more accurate, but harder

to move, and will lead to premature wear of the

ways. A loose gib makes the movements and

measurements sloppy, but easier to move. The

goal of gib adjustment is to remove unnecessary

sloppiness without causing the dovetail way to

bind.

If the conveyor belt tracks to either side, the

belt could become damaged and have to be

replaced.

Adjusting the conveyor belt tracking is a balancing

process that takes patience and some trial-and-

error. You must tighten the loose side adjusting

bolt (the side the belt is tracking towards) to make

the belt move to the middle of the rollers, then

loosen that same adjusting bolt to make the con-

veyor stay in position.

To adjust the gib:

1. DISCONNECT THE SANDER FROM

POWER!

To adjust the conveyor belt tracking:

2. Clean and lubricate the dovetail way and

gears (Page 26).

1. Make sure the conveyor is properly tensioned

(Page 30).

3. Loosen the four gib jam nuts along the col-

umn shown in Figure 34.

1. Turn the conveyor ON and watch it track.

2. Determine which side the conveyor belt is

tracking towards, and tighten the adjustment

bolt (see Figure 32) on that side until the belt

tracks in the opposite direction.

Note: Tracking changes may take a couple of

minutes before they are noticeable.

Gib Jam Nuts

& Set Screws

3. When the conveyor belt is near the middle

of the rollers, loosen the same adjusting bolt

until the conveyor stops moving to the side

and tracks straight.

—If the belt tracks too far to the other side,

tighten the adjusting bolt as necessary to

bring it back, then repeats Steps 2 & 3 until

the tracking is correct.

Figure 34. Gib jam nuts and set screws.

4. Adjust the gib set screws evenly until there is

a slight drag on the dovetail way as you move

the sanding cabinet up and down.

5. Re-tighten the gib jam nuts.

-32-

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conveyor & drum parallel

To adjust the sanding drum and conveyor par-

allelism:

Sanding Drum &

Conveyor Parallelism

Note: Use the measurements you recorded

when checking the parallelism in the previous

procedure.

The sanding drum and conveyor must be parallel

to one another to obtain accurate sanding results.

This setting is made at the factory and should not

have to be made again. However, if it is necessary

to adjust the sanding drum and conveyor parallel

to each other, follow the procedure below.

1. Loosen the four mounting cap screws on

the right side of the column base shown in

Figure 35.

This process involves multiple accurate measure-

ments, patience, and trial-and-error. The goal is to

bring the sanding drum and conveyor parallel to

one another within 0.005" from side-to-side.

Mounting

Cap

Screws

Mounting

Cap

Screws

Jack Screws

Using a dial indicator is probably the most accu-

rate method of taking measurements for this pro-

cedure. However, you can use gauge blocks and

feeler gauges to attain acceptable results.

To make gauge blocks, square up a 7' long 2x4

(refer to your jointer manual for detailed instruc-

tions), then cut it in half.

Figure 35. Column mounting cap screws and

jack screws.

To check the sanding drum and conveyor par-

allelism:

2. Tighten or loosen the upper or lower jack

screw to bring the sanding drum and con-

veyor parallel to one another to within 0.005"

from side-to-side.

1. DISCONNECT THE SANDER FROM

POWER!

2. Remove the sanding belt from the sander.

—To raise the left side of the sanding drum

up, tighten the upper jack screw.

3. Record the precise measurements between

the lowest point of the sanding drum and the

conveyor from side-to-side.

—To lower the left side of the sanding drum,

tighten the lower jack screw.

—If the measurements differ more than 0.005"

from side-to-side, continue to the next set

of steps to adjust the sanding drum and

conveyor parallelism.

3. Evenly re-tighten the four mounting cap

screws.

4. Plane a 15" wide piece of stock, then send it

through the sander until it is flat.

5. Use a caliper to measure this workpiece from

side-to-side. If these measurements differ

more than 0.005", repeat Steps 1–4 until you

are satisfied.

-33-

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air pressure switch

depth of cut safety bar

Air Pressure Safety

Switch

Adjusting Depth Of

Cut Safety Bar

The sanding motor safety brake and the sanding

belt oscillation system require at least 57 PSI of

air pressure connected to the machine to oper-

ate correctly. The air pressure safety switch (see

Figure 36) measures the amount of air pressure

flowing into the machine. If there is not adequate

air pressure, the air pressure safety switch will not

allow power to flow to the sander.

When properly adjusted, prevents the operator

from exceeding the maximum depth depth of cut.

The position of this safety bar (see Figure 37)

was factory set at approximately ⁄64" (0.047")

above the lowest point of the sanding drum. We

recommend that this safety bar remain at this set-

ting.

Sensitivity Adjustment Screw

Hex Bolts

Minimum Air

Pressure

Adjustment

Screw & Scale

Sensitivity Scale

Figure 36. Air pressure safety switch.

Figure 37. Depth of cut safety bar.

The air pressure safety switch was calibrated

and set at the factory and should not require any

further adjustment. However, we recommend that

you verify the settings.

To adjust the depth of cut safety bar to the

factory setting:

1. Make sure the sanding drum and conveyor

are parallel (Page 32).

The red pointer on the sensitivity scale should be

set at "0" on the scale, which is adjusted with the

sensitivity adjustment screw shown in Figure 36.

The left minimum air pressure scale should read 4

kg/cm², which is adjusted with the related adjust-

ment screw.

2. Sand a 15" wide piece of stock until it is flat.

3. DISCONNECT THE SANDER FROM

POWER!

4. Open the sanding belt access door and

remove the sanding belt from the sander.

-34-

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adjusting pressure rollers

5. Place the sanded workpiece under the sand-

ing drum and lower the sanding cabinet

until the sanding drum is just touching the

workpiece.

The pressure roller height was factory set at

approximately ¹⁄16" (0.063") below the lowest point

of the sanding drum.

To adjust the height of the pressure rollers:

6. Remove the workpiece from under the sand-

ing drum and position it directly under the

depth of cut safety bar.

1. Make sure the sanding drum and conveyor

are parallel (Page 32).

7. Loosen the three hex bolts securing the

2. Sand a 15" wide piece of stock until it is flat.

safety bar.

3. DISCONNECT THE SANDER FROM

8. Use feeler gauges to raise the safety bar

approximately ³⁄64" (0.047") above the

workpiece from side-to-side.

POWER!

4. Open the sanding belt access door and

remove the sanding belt from the sander.

9. Re-tighten the hex bolts.

5. Loosen the eight cap screws securing the

front and rear pressure rollers to the sanding

cabinet (see Figure 39).

10. Re-install the sanding belt and secure the

access door.

Cap Screws

Adjusting Pressure

Rollers

The height of the pressure rollers (see Figure

38) is set below the sanding drum to keep the

workpiece firmly against the conveyor belt as it

passes through the sander, preventing workpiece

kickback.

Front

Pressure

Roller

Figure 39. Pressure roller cap screws (front

pressure roller cap screws shown)

6. Place the workpiece under the sanding

drum.

Rear

Pressure

Roller

7. Use feeler gauges to position the sanding

drum approximately ⁄16" (0.063") above the

sanded workpiece from Step 2.

8. Adjust the pressure rollers so that they are

lightly resting on the workpiece from side-to-

side, then re-tighten the cap screws to secure

the pressure rollers in place.

Figure 38. Pressure rollers.

9. Re-install the sanding belt and secure the

access door.

-35-

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3. Use a 10mm wrench to loosen the con-

veyor adjusting jam nuts (left and right), then

release the tension on the conveyor belt by

loosening the tension adjusting hex bolts

(see Figure 41).

Replacing Conveyor

Belt

Contact Grizzly Customer Service at (800) 523-

4777 to obtain a replacement conveyor belt (Part

Number P0644024).

Tension

Adjusting

Hex Bolt

To replace the conveyor belt:

1. DISCONNECT THE SANDER FROM

POWER!

Jam Nut

2. Use a 4mm hex wrench to remove the M4-.7

x 10 cap screws and flat washers securing

the front and rear conveyor roller guards (see

Figure 40), then remove the guards.

Front Roller

Bracket

Button Head

Cap Screws

Figure 41. Conveyor belt tensioning fasteners

Sanding Assembly

Mounting Brackets

& Hex Bolts

and front roller bracket.

4. Use a 5mm hex wrench to remove the three

M8-1.25 x 18 button head cap screws secur-

ing the left front conveyor roller bracket (see

Figure 41), then, while supporting the front

conveyor roller assembly, remove the brack-

et.

5. Carefully pull the front conveyor roller assem-

bly from the conveyor belt and the right front

roller bracket.

Front Conveyor

Roller Guard

Rear Conveyor

Roller Guard

Figure 40. Conveyor roller guards and sanding

assembly mounting brackets.

NOTICE

Take care not to scratch or dent the front

conveyor roller as you remove it from the

sander. Damage to the conveyor roller could

result in premature wear of the conveyor

belt.

-36-

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6. Use a 5mm hex wrench to remove the three

M8-1.25 x 18 button head cap screws secur-

ing left rear conveyor roller bracket, leaving

the rear conveyor roller assembly and brack-

et in place (see Figure 42).

9. With assistance, carefully lift the sanding

assembly up and remove the conveyor belt,

as shown in Figure 43.

Note: After loosening the left conveyor roller

bracket, the rear conveyor roller assembly is

supported by its attachment to the conveyor

motor assembly. However, to avoid damaging

this roller assembly, DO NOT put unneces-

sary strain on it.

Figure 43. Conveyor belt partially removed from

the sander.

10. Slide the new conveyor belt onto the convey-

or and re-install the parts in reverse order.

Note: Make sure the conveyor roller brackets

are mounted with the small flange facing out,

as shown in Figure 44.

Rear Conveyor

Roller Bracket

Figure 42. Rear conveyor roller bracket

unattached.

7. Loosen the four upper button head cap screws

securing the sanding assembly mounting

brackets to the conveyor (see Figure 40).

Note: Loosening these fasteners will relieve

the strain on the brackets for the next step.

8. Use a 12mm hex wrench to remove the two

⁵⁄16"-18 x 1" hex bolts, flat washers, and hex

nuts securing the left sanding assembly

mounting brackets (see Figure 40).

Note: Reach into the cabinet stand to reach

the hex nuts.

Figure 44. Conveyor roller bracket flange for the

tension adjusting bolt.

11. Re-tension the conveyor belt, and adjust the

tracking (Pages 30 & 31).

12. Re-adjust sanding drum and conveyor paral-

lelism (Page 32).

-37-

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Electrical Wiring Overview

Air Pressure

Safety Switch

(Page 40)

Air Pressure

Brake Solenoid

(Page 40)

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Electrical Box

& Control Panel

(Photo: Page 39,

Diagram: Page 38)

Conveyor

Motor

220V

Power Source

(Page 40)

��

(see Page 41)

��

Sanding Motor

(Page 40)

-38-

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electrical wiring diagram

Electrical Box & Control Panel Wiring

Diagram

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Conveyor Motor

(Page 40)

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Air Pressure

Safety Switch

(Page 40)

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Air Pressure

Brake Solenoid

(Page 40)

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Sanding Motor

(Page 40)

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-39-

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elect components 1

Electrical Components

Conveyor DC

Motor Control

Contactor &

Overload Relay

Control Panel

Figure 45. Electrical box wiring (Diagram: Page 38).

Power Lamp

Amp Load

Meter

Sanding Motor

ON Button

Conveyor

ON/OFF

Switch

Conveyor

Speed Dial

Emergency

Stop Button

Figure 46. Control panel wiring (Diagram: Page 38).

-40-

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elect components 2

Electrical Components

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(Pages 38 & 39)

Figure 47. Sanding motor wiring.

Figure 50. Sanding motor wiring diagram.

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(Pages 38

& 39)

Figure 48. Conveyor motor.

Figure 51. Conveyor motor wiring diagram.

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Air Pressure

Safety Switch

(Pages 38 & 39)

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(Pages 38

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& 39)

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Air Pressure Brake Solenoid

Figure 49. Air pressure safety switch and brake

Figure 52. Air pressure safety switch and brake

solenoid.

solenoid wiring diagram.

-41-

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air system diagram

Air System Diagram

Air Pressure Safety Switch

(Part No. 98, Page 42)

Oscillation Cylinder

(Part No. 135, Page 42)

Air Regulator

(Part No. 92,

Page 42)

4-Way Valve

(Part No. 95,

Page 42)

Oscillation Valve

(Part No. 117, Page 42)

Air Pressure

Brake Solenoid

(Part No. 99,

Page 42)

Sanding Motor

Brake Unit

(Part No. 77,

Page 42)

Shop Air

Compressor

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(see Page 38)

-42-

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parts breakdown

Parts Breakdown

-43-

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Parts List

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

P0644001

P0644002

PS16M

CONVEYOR TABLE

PW04M

PLW06M

PLN05M

PSB11

FLAT WASHER 10MM

LOCK WASHER 10MM

LOCK NUT M10-1.5

CAP SCREW 5/16-18 X 1-1/4

BELT ROLLER MOUNT LOWER

POINTER

CONVEYOR ROLLER BRACKET LR

PHLP HD SCR M8-1.25 X 16

BALL BEARING 6003ZZ

CONVEYOR ROLLER REAR

KEY 5 X 5 X 30

P6003

P0644005

PK12M

P0644054

P0644055

PSB03

P0644007

P0644008

PSS03

CONVEYOR ROLLER BRACKET RR

CONNECTING BUSHING

SET SCREW 1/4-20 X 3/8

CONVEYOR MOTOR BRACKET

HEX BOLT 1/4-20 X 1/2

CAP SCREW 5/16-18 X 1

GIB

P0644057

PSS19

SET SCREW 5/16-18 X 1 1/4

HEX NUT 5/16-18

P0644010

PB19

PN02

P0644060

P0644061

P6205

LOCK HANDLE

PW06

FLAT WASHER 1/4

SANDING DRUM

P0644013

CONVEYOR MOTOR

BALL BEARING 6205ZZ

BEARING HOUSING

AUXILIARY SUPPORT PLATE

HEX BOLT M8-1.25 X 35

SPACER

13-1 P0644013-1 CONVEYOR MOTOR WORM

P0644063

P0644064

PB20M

PSB26M

P0644015

PSB02

CAP SCREW M6-1 X 12

CONVEYOR ROLLER GUARD R.

CAP SCREW 10-24 X 3/8

CONVEYOR ROLLER BRACKET F

CONVEYOR ROLLER F

CONVEYOR ROLLER SHAFT F

BALL BEARING 6003ZZ

EXT RETAINING RING 17MM

HEX NUT 1/4-20

P0644066

PSB30

P0644017

P0644018

P0644019

P6003

CAP SCREW 5/16-18 X 1/2

MOTOR MOUNT

P0644068

PB03

HEX BOLT 5/16-18 X 1

HEX BOLT 5/16-18 X 1-1/4

LOCK WASHER 5/16

FLAT WASHER 5/16

SWITCH BOX SUPPORT BRACKET

COUPLER

PB12

PR18M

PLW01

PN05

PW07

PB10

HEX BOLT 1/4-20 X 2

CONVEYOR BELT

P0644073

P0644074

P0644024

P0644025

PSS39

SET COLLAR

74-1 P0644074-1 COUPLER PAD

SET SCREW 1/4-20 X 1 1/4

LOCK NUT 1/4-20

PSS02

SET SCREW 5/16-18 X 3/8

MOTOR 220V 1-PH

PLN02

P0644076

P0644028

P0644029

P0644030

PSB31M

PSB61M

P0644033

P0644034

PSB06

CONVEYOR ROLLER GUARD F.

SUPPORT LEG

76-1 P0644076-1 MOTOR FAN COVER

76-2 P0644076-2 MOTOR FAN

SUPPORT FRAME

76-3 P0644076-3 CAPACITOR COVER

CAP SCREW M8-1.25 X 25

CAP SCREW M10-1.5 X 20

ELEVATION SCALE

76-4 P0644076-4 R CAPACITOR 50M 250V 1-3/8 X 3-1/8

76-5 P0644076-5 S CAPACITOR 400M 125V 1-3/8 X 3

76-6 P0644076-6 MOTOR JUNCTION BOX

WORM ROD BRACKET

CAP SCREW 1/4-20 X 1

WORM ROD

P0644077

P0644078

P0644079

P0644080

P0644081

P0644082

P0644083

P0644084

P0644085

P0644086

PHTEK6

BRAKE UNIT

STRAIN RELIEF

P0644036

P51102

SWITCH BOX

THRUST BEARING 51102

COMPRESSION SPRING

SET NUT

SWITCH PLATE

P0644038

P0644039

P0644040

P0644041

P51105

POWER SWITCH

CONVEYOR SPEED CONTROL

EMERGENCY STOP BUTTON

SANDING MOTOR BUTTON

POWER INDICATION LAMP

AMPERAGE METER

TAP SCREW #10 X 3/8

POWER CORD

HAND WHEEL

HANDLE

THRUST BEARING 51105

ELEVATION LEADSCREW

WORM WHEEL

P0644043

P0644044

P0644045

PSB04

GEAR GUARD

P0644088

P0644089

P0644090

P0644091

P0644092

CAP SCREW 1/4-20 X 1/2

PLUG

STRAIN RELIEF

P0644047

P0644048

P0644049

DC MOTOR SPEED CONTROLLER

SWITCH BOX UPPER COVER

AIR FILTER

BEARING NUT

ELEVATION LEADSCREW BRACKET

-44-

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Parts List

REF PART # DESCRIPTION

93 P0644093 TUBE CONNECTOR

94 P0644094 CONNECTING TUBE

95 P0644095 4-WAY VALVE

127 P0644127 CYLINDER SUPPORT PLATE

128 P0644128 SPECIAL SCREW

129 P0644129 BUFFER PAD

96 P0644096 AIR INLET 1/4 NPT

130 P608

BALL BEARING 608ZZ

FLAT WASHER 8MM

97 P0644097 CONNECTOR

131 PW01M

98 P0644098 AIR PRESSURE SAFETY SWITCH

99 P0644099 AIR PRESSURE BRAKE SOLENOID

132 P0644132 CYLINDER BRACKET

133 PS06M PHLP HD SCR M5-.8 X 20

100 PS01

PHLP HD SCR 10-24 x 1-1/2

LOCK NUT 10-24

134 P0644134 GEAR WASHER 5MM

135 P0644135 CYLINDER

101 PLN04

102 P0644102 AIR PLUG

103 P0644103 SILENCER

104 P0644104 SUPPORT ARM

136 P0644136 PIPE JOINT

137 P0644137 SANDING BELT

138 P0644138 LEVER

105 PW01M

FLAT WASHER 8MM

139 P0644139 HANDLE

106 P0644106 ELEVATION ROD GUIDE

140 P0644140 SANDING BELT GUARD

141 P0644141 DEPTH OF CUT SAFETY PLATE

142 P0644142 PRESSURE ROLLER

143 P0644143 PRESSURE ROLLER BUSHING

144 P0644144 PRESSURE ROLLER BRACKET R

145 P0644145 PRESSURE ROLLER BRACKET L

146 P0644146 PRESSURE ROLLER SUPPORT BRACKET L

147 P0644147 PRESSURE ROLLER SUPPORT BRACKET R.

107 PLW02

108 PSB01

LOCK WASHER 1/4

CAP SCREW 1/4-20 X 5/8

109 P0644109 COMPRESSION SPRING

110 P51106 THRUST BEARING 51106

111 P0644111 LOCKING COLLAR

112 P0644112 SANDING BELT ELEVATION ROD

113 P0644113 CRANK LEFT

114 P0644114 CRANK RIGHT

148 PS76M

PHLP HD SCR M8-1.25 X 12

115 PSS50

116 PW06

SET SCREW 1/4-20 X 2

FLAT WASHER 1/4

149 P0644149 COIL SPRING

150 P0644150 SIDE COVER LOCK KNOB

151 P0644151 SIDE COVER

117 P0644117 VALVE

118 P0644118 COMPRESSION SPRING

153 PB07M

HEX BOLT M8-1.25 X 25

119 PSB21M

CAP SCREW M4-.7 X 30

154 P0644154 CABINET

120 P0644120 PIPE JOINT

155 P0644155 FRONT FACE PLATE

156 P0644156 DOOR

121 P0644121 ROLLER SUPPORT FRAME UPPER

122 P0644122 ROLLER BRACKET UPPER

123 P0644123 SANDING ROLLER UPPER

124 P0644124 SANDING ROLLER SHAFT UPPER

125 P0644125 OSCILLATION SENSOR PLATE

126 P0644126 CYLINDER SUPPORT BRACKET

157 P0644157 DOOR LOCK

158 P0644158 CONTACTOR NHD C-090 220V

159 P0644159 OL RELAY NHD NTH NTH-17 14-17A

160 PN01M

HEX NUT M6-1

-45-

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Label Placement & List

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REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

201

202

203

204

205

206

207

P0644201

P0644202

P0644203

P0644204

P0644205

P0644206

MACHINE ID LABEL

208

209

210

211

212

213

214

P0644208

P0644209

P0644210

P0644211

P0644212

P0644213

P0644214

GRIZZLY NAMEPLATE 9-1/4" X 4-1/2"

ENTANGLEMENT HAZARD LABEL VERT

EYE/LUNG HAZARD LABEL VERT

READ MANUAL LABEL VERT

MODEL NUMBER LABEL

ELEVATION HANDWHEEL LABEL

CONTROL PANEL LABEL

DISCONNECT WARNING LABEL VERT

HAZARD AREA LABEL

HAND INJURY LABEL VERT

GRIZZLY GREEN TOUCH UP PAINT

GRIZZLY PUTTY TOUCH UP PAINT

PLABEL-14 ELECTRICITY LABEL

Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine

MUST maintain the original location and readability of the labels on the machine. If any label is

removed or becomes unreadable, REPLACE that label before using the machine again. Contact

Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.

-46-

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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 par-

ticular 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.

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