Grizzly G7211, G7212 User Manual

24" BANDSAW
MODEL G7211/G7212
INSTRUCTION MANUAL
COPYRIGHT ©1992 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.
REVISED AUGUST, 2000 PRINTED IN TAIWAN
DISCONTINUED MACHINE MANUAL DISCLAIMER
URATIONS MAY HAVE CHANGED AS PRODUCT IMPROVEMENTS WERE INCORPORATED. IF YOU OWN AN EARLIER VERSION OF THE MACHINE, THIS
MANUAL MAY NOT EXACTLY DEPICT YOUR MACHINE . CONTACT CUSTOMER SERVICE IF YOU HAVE ANY QUESTIONS ABOUT DIFFERENCES. PREVI-
OUS VERSIONS ARE NOT AVAILABLE ONLINE.
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.
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Table Of Contents
PAGE
1. SAFETY
SAFETY RULES FOR POWER TOOLS ............................................................2-3
ADDITIONAL SAFETY INSTRUCTIONS FOR BANDSAWS ................................4
2. CIRCUIT REQUIREMENTS
220V OPERATION ................................................................................................5
EXTENSION CORDS ............................................................................................5
WIRING DIAGRAM ................................................................................................5
3-PHASE OPERATION ..........................................................................................6
3. INTRODUCTION
COMMENTARY......................................................................................................7
UNPACKING ..........................................................................................................8
PARTS INVENTORY..............................................................................................8
CLEAN UP..............................................................................................................9
SITE CONSIDERATIONS ......................................................................................9
4. ASSEMBLY
FENCE..................................................................................................................10
5. ADJUSTMENTS
TRACKING ..........................................................................................................11
TENSION..............................................................................................................11
WHEEL ALIGNMENT ..........................................................................................12
UPPER GUIDES ............................................................................................12-13
LOWER GUIDES..................................................................................................13
POSITIVE TABLE STOP......................................................................................14
6. OPERATIONS
PRE-RUN CHECK................................................................................................15
BANDSAW BLADES ............................................................................................15
CHANGING BLADES ..........................................................................................16
CHANGING SPEEDS ..........................................................................................17
RIPPING ..............................................................................................................18
STACKED CUTS..................................................................................................18
CUTTING CURVES..............................................................................................19
RESAWING ..........................................................................................................19
7. MAINTENANCE
TABLE ..................................................................................................................20
V-BELTS ..............................................................................................................20
LUBRICATION......................................................................................................21
MISCELLANEOUS ..............................................................................................21
8. CLOSURE..................................................................................................................22
MACHINE DATA................................................................................................................23
PARTS BREAKDOWN AND PARTS LISTS ................................................................24-27
WIRING DIAGRAMS ....................................................................................................28-29
WARRANTY AND RETURNS ..........................................................................................30
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G7211/7212 24" Bandsaw
Safety Instructions For Power Tools
SECTION 1: SAFETY
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
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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. 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. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recom­mended accessories. The use of improper accessories may cause risk of injury.
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
16. REDUCE THE RISK OF UNINTENTION­AL STARTING. On machines with mag-
netic contact starting switches there is a risk of starting if the machine is bumped or jarred. Always disconnect from power source before adjusting or servicing. Make sure switch is in OFF position before recon­necting.
17. MANY WOODWORKING TOOLS CAN “KICKBACK” THE WORKPIECE toward
the operator if not handled properly. Know what conditions can create “kickback” and know how to avoid them. Read the manual accompanying the machine thoroughly.
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.
20. NEVER OPERATE A MACHINE WHEN TIRED, OR UNDER THE INFLUENCE OF DRUGS OR ALCOHOL. Full mental alert-
ness is required at all times when running a machine.
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.
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G7211/7212 24" Bandsaw
Additional Safety Instructions For Bandsaws
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.
7. ALWAYS FEED STOCK EVENLY AND SMOOTHLY. Do not force or twist blade
while cutting, especially when sawing small radii.
8. THIS MACHINE IS NOT DESIGNED TO CUT METAL or other material except
wood.
9. BLADE SHOULD RUNNING AT FULL SPEED before beginning a cut.
10. DO NOT MANUALLY STOP OR SLOW BLADE after turning the saw off. Use foot
brake.
11. ALL INSPECTIONS, ADJUSTMENTS, AND MAINTENANCE ARE TO BE DONE WITH THE POWER OFF and the plug
pulled from the outlet. Wait for all moving parts to come to a complete stop.
12. Habits – good and bad – are hard to break.
Develop good habits in your shop and safety will become second-nature to you.
1. DO NOT OPERATE WITH DULL OR BADLY WORN BLADES. Dull blades
require more effort to use and are difficult to control. Inspect blades before each use.
2. NEVER POSITION FINGERS OR THUMBS IN LINE WITH THE CUT.
Serious personal injury could occur.
3. DO NOT OPERATE THIS BANDSAW WITHOUT WHEEL, PULLEY, AND BLADE GUARDS IN PLACE.
4. WHEN REPLACING BLADES, make sure
teeth face down towards the table. The force of the cut is always down. Make sure the blade is properly tensioned.
5. CUTS SHOULD ALWAYS BE FULLY SUPPORTED by the table or some type of
support fixture. Always support round stock in a V-block.
6. DO NOT BACK WORKPIECE AWAY from
the blade while the saw is running. Plan your cuts so you always cut out of the wood. if you need to back the work out, turn the bandsaw off and wait for the blade to come to a complete stop. Do not twist or put excessive stress on the blade while backing work away.
Always wear ANSI-approved safety glasses or goggles and hearing protection when operating equipment — particularly when testing new tools or machinery. Do not allow visitors into your workshop when testing or operating equipment. Serious personal injury may occur.
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220V Operation
The motor supplied with the G7211 comes prewired for 220V. Refer to the wiring diagram supplied at the back of this manual for more spe­cific information about wiring connections. The G7212 is a 220V, three-phase motor and requires special electrical service. See section on three­phase operation on the next page.
This machine does not come supplied with a plug, therefore 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 1.
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 20 amps @ 220V. We recommend a 25 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
Figure 1. Typical 220V 3-prong plug and outlet.
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. Should it be necessary to use an extension, make sure the cord is rated Hard Service (Grade S) or better. Refer to the chart in Section 1: 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.
Extension Cords
Your G7211 machine comes pre-wired for 220 volt operation. A wiring diagram is provided at the back of this manual should it be necessary to repair or revise the wiring. Always utilize a quali­fied electrician when doing any electrical work on this equipment.
Wiring Diagram
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G7211/7212 24" Bandsaw
The Model G7212 has a 7.5 H.P. motor config­ured to operate under three-phase electrical serv­ice. Generally this type of electrical supply is only found in commercial or industrial locations. Connection to three-phase service should only be done by a qualified electrician.
If you do not have three-phase service available a phase converter can be utilized in conjunction with a 220V single phase power supply. Refer to the Grizzly catalog for a complete range of phase converters.
3-Phase Operation Notes
We have covered some basic electrical requirements for the safe operation of your Bandsaw. 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.
G7211/7212 24" Bandsaw -7-
SECTION 3: INTRODUCTION
Commentary
We are proud to offer the Models G7211/G7212 24" Bandsaws. These bandsaws are 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.
The Models G7211/G7212 are woodcutting band­saws with powerful 5 H.P. or 7.5 H.P. motors, cast iron fence, miter gauge, 4" dust port, foot brake and micro-adjustable ball-bearing guides. They feature an all steel construction frame and cast iron table. A complete range of blades with widths from
1
2" to 11⁄4" and various tooth styles are avail-
able in the current Grizzly catalog for prices and ordering information.
We are also pleased to provide this instructional manual with the Model G7211/G7212 24" Bandsaws. 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 importantly, we stand behind our machines. If you have any service questions or parts requests, please notify us using one of the follow­ing contacts:
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 G7211/G7212 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. Whenever possible, though, we send manual updates to all owners of a particular tool or machine. Should you receive one, we urge you to insert the new information with the old and keep
it for reference.
To operate this or any power tool safely and efficiently, it is essential to become as familiar with it as possible. The time you invest before you begin to use your Model G7211/G7212 will be time well spent. DO NOT operate this machine until you are completely familiar with the contents of this manual. Serious personal injury may occur.
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G7211/7212 24" Bandsaw
Unpacking
The bandsaw is shipped from the factory in a carefully packed carton. If you find the machine to be damaged after you’ve signed for delivery and the truck and driver are already gone, you will need to file a freight claim with the carrier. Save the containers and all packing materials for inspection by the carrier or their agent. Without the packing materials, filing a freight claim can be difficult. If you need advice regarding this situa­tion, please call us immediately.
When you are completely satisfied with the condi­tion of your shipment, you should inventory its parts.
The G7211/G7212 is a very heavy machine with a shipping weight of 725 lbs. DO NOT over-exert yourself while unpacking or moving your machine – get assistance. In the event that your bandsaw must be moved up or down a flight of stairs, be sure that the stairs are capable of supporting the combined weight of people and the machine. Serious personal injury may occur.
Parts Inventory
NOTICE
Save all containers and packing materials until you are satisfied that your bandsaw has arrived in good condition. Freight com­pany adjusters will want to inspect those materials in the event that a freight claim must be made.
Take a quick inventory of the parts and put them aside for assembly later. After all the parts have been removed from the container, you should have:
• Bandsaw Assembly
• Fence Assembly
• Miter Gauge
• Hardware
Cap Screws 5/16" - 18 x 21/2"2 Fence Rail Spacers 2 Fence Rail 1
In the event that any non-proprietary parts are missing (e.g. a bolt, 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.
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Clean Up
The unpainted surfaces are coated with a waxy oil to protect it from corrosion during shipment. Remove this protective coating with a solvent cleaner or citrus-based degreaser such as Grizzly’s G7895 Degreaser. Avoid chlorine-based solvents as they may damage painted surfaces should they come in contact. Always follow the usage instructions on the product you choose for clean up.
Site Considerations
FLOOR LOAD
Your G7211/G7212 Bandsaw represents a large weight load in a small footprint. Most commercial floors are suitable for the Model G7211/G7212. Some residential floors may require additional build up to support both machine and operator.
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 young­sters by closing and locking all entrances when you are away. Never allow visitors in your shop when assembling, adjusting or operating equipment.
Many of the solvents commonly used to clean machinery can be highly flammable, and toxic when inhaled or ingested. Always work in well-ventilated 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. Keep children and animals safely away when cleaning and assembling this machine.
Do not use gasoline or other petroleum­based solvents to remove this protective coating. These products generally have low flash points which makes them extremely flammable. A risk of explosion and burning exists if these products are used. Serious personal injury may occur.
All die-cut metal parts have a sharp edge (called “flashing”) on them after they are formed. This is generally removed at the factory. Sometimes a bit of flashing might escape inspection, and the sharp edge may cause cuts or lacerations when handled. Please examine the edges of all die-cut metal parts and file or sand the edge to remove the flashing before handling.
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