Grizzly G8793 User Manual

12" DOUBLE DISC SANDER

MODEL G8793

INSTRUCTION MANUAL

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

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

JUNE, 2000 PRINTED IN TAIWAN

G8793 12" Double Disc Sander -1-

TABLE OF CONTENTS

PAGE

1. SAFETY RULES

SAFETY INSTRUCTIONS FOR POWER TOOLS . . . . . . . . . . . . . . . . . . . . . . . . .2-3

ADDITIONAL SAFETY INSTRUCTIONS FOR THE SANDER . . . . . . . . . . . . . . . . .4

2. CIRCUIT REQUIREMENTS

110V OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

220V OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

EXTENSION CORDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3. GENERAL INFORMATION

COMMENTARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

PIECE INVENTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

CLEAN UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

SITE CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4. ASSEMBLY

MOUNTING TO STAND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

DISC TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

ATTACHING SANDPAPER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5. ADJUSTMENTS

TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

MITER GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

6. OPERATIONS

TABLE TILT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

DISC SANDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

MITER SANDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

7. MAINTENANCE

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

ATTACHING DISCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

ATTACHING DISC GUARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

DUST PORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

8. CLOSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

MACHINE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

PARTS DIAGRAMS/PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-21

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

-2- G8793 12" Double Disc Sander

SECTION 1: SAFETY

Safety Instructions For Power Tools

5. KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be

kept a safe distance from work area.

6. MAKE WORK SHOP CHILD PROOF with

padlocks, master switches, or by removing starter keys.

7. DON’T FORCE TOOL. It will do the job

better and safer at the rate for which it was designed.

8. USE RIGHT TOOL. Don’t 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. DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or

wet locations, or where any flammable or noxious fumes may exist. Keep work area well lighted.

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

G8793 12" Double Disc 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.

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

13. DON’T OVERREACH. Keep proper foot-

ing and balance at all times.

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.

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. Don’t

leave tool until it comes to a complete stop.

-4- G8793 12" Double Disc Sander

Additional Safety Instructions For The Sander

1. Be aware of belt or disc rotation direction

when sanding.

2. Keep fingertips away from moving parts.

3. Never use excessive force when sanding.

Doing so greatly increases the chance of personal injury, mechanical damage, or damage to your workpiece.

4. Always feed your work AGAINST the

direction of rotation.

5. DO NOT operate the sander if the disc or

belt are damaged or badly worn. Portions of sandpaper could be ejected from the sander.

6. Even if you have a reliable method of dust

collection, use a dust mask or respirator when sanding. Use eye and hearing protection as well.

7. DO NOT sand material when you doubt its

stability or integrity. Inspect all materials carefully for foreign objects like nails and staples.

8. When disc sanding, feed material into the

portion of the disc spinning DOWN toward

the table.

9. Habits – good and bad – are hard to break.

Develop good habits in your shop and safety will become second-nature to you.

Operating this equipment has the potential to propel debris into the air 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).

Like all power tools, there is danger associated with the Model G8793 Double Disc Sander. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this tool with respect and caution to lessen the possibility of operator injury. If normal safety precautions are overlooked or ignored, serious personal injury may occur.

No list of safety guidelines can be complete. Every shop environment is different. Always consider safety first, as it applies to your individual working conditions. Use this and other machinery with caution and respect. Failure to do so could result in serious personal injury, damage to equipment or poor work results.

G8793 12" Double Disc Sander -5-

220V Operation

The motor supplied with the G8793 can be operated at either 110V or 220V. The motor comes pre wired for 110V. Refer to the wiring diagram inside the motor cover for information about converting to operate at 220V.

If converting to operate at 220V, a suitable 220V plug must be wired in. When operating at 220V, we recommend using a NEMA-style 6L-15 plug

and outlet. See Figure 2. You may also “hard-

wire” the machine directly to your panel, provided you place a disconnect switch near the machine. Check the electrical codes in your area for specifics on wiring requirements.

Under normal use, the motor draws approximately 10 amps @ 220V. We recommend a 15 amp circuit breaker for 220V operation This should be satisfactory for normal use while providing enough protection against motor damage caused by power surges.

SECTION 2: CIRCUIT REQUIREMENTS

110V Operation

The G8793 Sander motor is prewired to operate at 110V. A 110V plug is included with this machine. The plug must be used in a grounded

receptacle similar to that shown in Figure 1.

Under normal 110V use, the motor draws approximately 20 amps. We recommend a 20 amp circuit breaker or a 20 amp slow-blow fuse.

Grizzly recommends that the circuit you use should be dedicated, (i.e., the G8793 should provide the only draw from that circuit). If frequent circuit failures occur when using this machine, contact our Service Department or your local electrical contractor.

Figure 1. Typical 110V 3-prong plug and outlet.

Figure 2. Typical 220V 3-prong plug and outlet.

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Grounding

This equipment must be grounded. Verify that any existing electrical outlet and circuit you intend to plug into is actually grounded. If it is not, it will be necessary to run a separate 12 A.W.G. copper grounding wire from the outlet to a known ground. Under no circumstances should the grounding pin from any three-pronged plug be removed. Serious injury may occur.

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 a power cord hav-

ing an equipment-grounding conductor. See Figures 1 and 2. The outlet must be properly

installed and grounded in accordance with all local codes and ordinances.

If you find it necessary to use an extension cord with the Model G8793, make sure the cord is rated Hard Service (grade S) or better. Refer to the chart in the standard safety instructions to determine the minimum gauge for the extension cord. The extension cord must also contain a ground wire and plug pin. Always repair or replace extension cords when they become worn or damaged.

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.

Extension Cords

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