Delta GR450, ShopMaster GR450 Instruction Manual
INSTRUCTION MANUAL
8" Variable Speed Grinder
(Model GR450)
PART NO. 908944 - 06-30-04
Copyright © 2004 Delta Machinery
To learn more about DELTA MACHINERY
visit our website at: www.deltamachinery.com.
For Parts, Service, Warranty or other Assistance,
please call
1-800-223-7278 (In Canada call 1-800-463-3582).
ESPAÑOL: PÁGINA 15
2
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.
Used without the safety alert symbol indicates potentially hazardous situation which, if not avoided, may
result in property damage.
This manual contains information that is important for you to know and understand. This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the
symbols below. Please read the manual and pay attention to these sections.
SAFETY GUIDELINES - DEFINITIONS
SOME DUST CREATED BY POWER SANDING, SAWING, GRINDING, DRILLING, AND OTHER
CONSTRUCTION ACTIVITIES contains chemicals known to cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
· lead from lead-based paints,
· crystalline silica from bricks and cement and other masonry products, and
· 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, always wear MSHA/NIOSH
approved, properly fitting face mask or respirator when using such tools.
GENERAL SAFETY RULES
READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE
USING THIS EQUIPMENT. Failure to follow all instructions listed below, may result in electric shock,
fire, and/or serious personal injury or property damage.
IMPORTANT SAFETY INSTRUCTIONS
Woodworking can be dangerous if safe and proper operating procedures are not followed. As with all machinery, there
are certain hazards involved with the operation of the product. Using the machine with respect and caution will
considerably lessen the possibility of personal injury. However, if normal safety precautions are overlooked or ignored,
personal injury to the operator may result. Safety equipment such as guards, push sticks, hold-downs, featherboards,
goggles, dust masks and hearing protection can reduce your potential for injury. But even the best guard won’t make
up for poor judgment, carelessness or inattention. Always use common sense and exercise caution in the workshop.
If a procedure feels dangerous, don’t try it. Figure out an alternative procedure that feels safer. REMEMBER: Your
personal safety is your responsibility. For additional information please visit our website www.deltamachinery.com.
This machine was designed for certain applications only. Delta Machinery strongly recommends that this
machine not be modified and/or used for any application other than that for which it was designed. If you have any
questions relative to a particular application, DO NOT use the machine until you have first contacted Delta to determine
if it can or should be performed on the product.
Technical Service Manager
Delta Machinery
4825 Highway 45 North
Jackson, TN 38305
(IN CANADA: 505 SOUTHGATE DRIVE, GUELPH, ONTARIO N1H 6M7)
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GENERAL SAFETY RULES
1. FOR YOUR OWN SAFETY, READ THE INSTRUCTION
MANUAL BEFORE OPERATING THE MACHINE.
Learning the machine’s application, limitations, and
specific hazards will greatly minimize the possibility of
accidents and injury.
2. WEAR EYE PROTECTION. ALWAYS USE SAFETY
GLASSES. Also use face or dust mask if cutting
operation is dusty. Everyday eyeglasses are NOT safety
glasses. USE CERTIFIED SAFETY EQUIPMENT. Eye
protection equipment should comply with ANSI Z87.1
standards, hearing equipment should comply with
ANSI S3.19 standards, and dust mask protection
should comply with MSHA/NIOSH certified respirator
standards. Splinters, air-borne debris, and dust can
cause irritation, injury, and/or illness.
3. WEAR PROPER APPAREL. Do not wear loose
clothing, gloves, neckties, rings, bracelets, or other
jewelry which may get caught in moving parts. Nonslip
footwear is recommended. Wear protective hair
covering to contain long hair.
4. DO NOT USE THE MACHINE IN A DANGEROUS
ENVIRONMENT. The use of power tools in damp or
wet locations or in rain can cause shock or
electrocution. Keep your work area well-lit to prevent
tripping or placing arms, hands, and fingers in danger.
5. MAINTAIN ALL TOOLS AND MACHINES IN PEAK
CONDITION. Keep tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing
accessories. Poorly maintained tools and machines can further
damage the tool or machine and/or cause injury.
6. CHECK FOR DAMAGED PARTS. Before using the
machine, check for any damaged parts. Check for
alignment of moving parts, binding of moving parts,
breakage of parts, and any other conditions that may
affect its operation. A guard or any other part that is
damaged should be properly repaired or replaced.
Damaged parts can cause further damage to the
machine and/or injury.
7. KEEP THE WORK AREA CLEAN. Cluttered areas and
benches invite accidents.
8. KEEP CHILDREN AND VISITORS AWAY. Your shop is a
potentially dangerous environment. Children and visitors can
be injured.
9. REDUCE THE RISK OF UNINTENTIONAL STARTING.
Make sure that the switch is in the “OFF” position
before plugging in the power cord. In the event of a
power failure, move the switch to the “OFF” position.
An accidental start-up can cause injury.
10. USE THE GUARDS. Check to see that all guards are in
place, secured, and working correctly to prevent injury.
11. REMOVE ADJUSTING KEYS AND WRENCHES
BEFORE STARTING THE MACHINE. Tools, scrap
pieces, and other debris can be thrown at high speed,
causing injury.
12. USE THE RIGHT MACHINE. Don’t force a machine or
an attachment to do a job for which it was not
designed. Damage to the machine and/or injury may
result.
13. USE RECOMMENDED ACCESSORIES. The use of
accessories and attachments not recommended by
Delta may cause damage to the machine or injury to the
user.
14. USE THE PROPER EXTENSION CORD. Make sure
your extension cord is in good condition. When using
an extension cord, be sure to use one heavy enough to
carry the current your product will draw. An undersized
cord will cause a drop in line voltage, resulting in loss of
power and overheating. See the Extension Cord Chart
for the correct size depending on the cord length and
nameplate ampere rating. If in doubt, use the next
heavier gauge. The smaller the gauge number, the
heavier the cord.
15. SECURE THE WORKPIECE. Use clamps or a vise to hold
the workpiece when practical. Loss of control of a
workpiece can cause injury.
16. FEED THE WORKPIECE AGAINST THE DIRECTION OF
THE ROTATION OF THE BLADE, CUTTER, OR ABRASIVE
SURFACE. Feeding it from the other direction will cause
the workpiece to be thrown out at high speed.
17. DON’T FORCE THE WORKPIECE ON THE MACHINE.
Damage to the machine and/or injury may result.
18. DON’T OVERREACH. Loss of balance can make you
fall into a working machine, causing injury.
19. NEVER STAND ON THE MACHINE. Injury could occur if the
tool tips, or if you accidentally contact the cutting tool.
20. NEVER LEAVE THE MACHINE RUNNING UNATTENDED.
TURN THE POWER OFF. Don’t leave the machine until it
comes to a complete stop. A child or visitor could be injured.
21. TURN THE MACHINE “OFF”, AND DISCONNECT THE
MACHINE FROM THE POWER SOURCE before installing
or removing accessories, before adjusting or changing
set-ups, or when making repairs. An accidental start-up
can cause injury.
22. MAKE YOUR WORKSHOP CHILDPROOF WITH
PADLOCKS, MASTER SWITCHES, OR BY
REMOVING STARTER KEYS. The accidental start-up
of a machine by a child or visitor could cause injury.
23. STAY ALERT, WATCH WHAT YOU ARE DOING, AND
USE COMMON SENSE. DO NOT USE THE
MACHINE WHEN YOU ARE TIRED OR UNDER THE
INFLUENCE OF DRUGS, ALCOHOL, OR MEDICATION. A moment of inattention while operating power
tools may result in injury.
24. TAKE PRECAUTIONS AGAINST DUST INHALATION.
The dust generated by certain woods and wood
products can be injurious to your health. Always
operate machinery in well-ventilated areas, and provide
for proper dust removal. Use wood dust collection
systems whenever possible.
FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS INJURY.
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ADDITIONAL SAFETY RULES
FOR GRINDERS
1. DO NOT OPERATE THIS MACHINE until it is
completely assembled and installed according to the
instructions. A machine incorrectly assembled can
cause serious injury.
2. OBTAIN ADVICE from your supervisor, instructor, or
another qualified person if you are not thoroughly
familiar with the operation of this machine. Knowledge
is safety.
3. FOLLOW ALL WIRING CODES and recommended
electrical connections to prevent shock or
electrocution.
4. ALWAYS USE THE PROVIDED BLOTTER AND
WHEEL FLANGES to mount the grinding wheels on
the grinder shaft to prevent wheel damage or accidental separation. Separation can result in fragments
flying off the wheel at high speeds.
5. USE ONLY WHEELS suitable for the speed of the
machine. Unsuitable grinding wheels can come apart,
throwing fragments out at high speeds.
6. USE ONLY WHEELS that have a bore exactly equal
to the arbors of the machine. Never attempt to
machine an undersized wheel to fit an arbor.
Unsuitable grinding wheels can come apart, throwing
fragments out at high speeds.
7. DO NOT OVERTIGHTEN WHEEL NUT.
8. DO NOT USE A WHEEL THAT VIBRATES. Dress the
grinding wheel, replace it, or replace the bearings of
the shaft. Unsuitable grinding wheels can come apart,
throwing fragments at high speeds.
9. INSPECT WHEELS before starting the machine for
cracks or fragments. REPLACE DAMAGED WHEELS
immediately. Parts of the wheel can be thrown at high
speeds causing serious injury.
10. ADJUST EYE SHIELDS close to the grinding wheel,
and re-adjust as the wheel wears down. Flying sparks
are dangerous and can cause fires or explosions.
11. ALWAYS MAKE SURE the eye shields are in place,
properly adjusted, and secured.
12. ADJUST TOOL RESTS close to the grinding wheel
(1/8" separation or less). Tighten the tool rest securely
to prevent shifting positions, and re-adjust as the
wheel wears down. The workpiece can be drawn into
the wheel, causing damage to the workpiece and/or
serious injury.
13. STAND TO ONE SIDE before turning the machine
“ON”. Loose fragments or wheel parts could fly from
the wheel at high speeds.
14. NEVER GRIND ON A COLD WHEEL. Run the grinder
for one full minute before applying the workpiece. A
cold wheel has a tendency to chip. Those fragments
could fly from the wheel at high speeds.
15. NEVER START THE MACHINE with the workpiece
against the grinding wheel. The workpiece can be
drawn into the wheel, causing damage to the machine
and/or serious injury.
16. CLEAN THE MACHINE thoroughly when processing
different types of workpieces (wood, steel, or
aluminum). Combining wood and metal dust can
create an explosion or fire hazard. DO NOT GRIND
OR POLISH MAGNESIUM. Fire will result.
17. NEVER GRIND NEAR FLAMMABLE GAS OR
LIQUIDS. Sparks can create a fire or an explosion.
18. AVOID AWKWARD OPERATIONS AND HAND
POSITIONS. A sudden slip could cause a hand to
move into the grinding wheel.
19. KEEP ARMS, HANDS, AND FINGERS away from the
wheel. The abrasive surfaces can cause serious injury.
20. HOLD THE WORKPIECE FIRMLY against the tool
rest. Loss of control of the workpiece can cause
serious injury.
21. DRESS THE WHEEL on the face only. Dressing the
side of the wheel could cause it to become too thin for
safe use.
22. GRIND A WORKPIECE using the face of the grinding
wheel only. Loss of control of the workpiece can
cause serious injury.
23. NEVER APPLY COOLANT directly to the grinding
wheel. Coolant can weaken the bonding strength of
the grinding wheel and cause it to fail. Dip the
workpiece in water to cool it.
24. DO NOT TOUCH the ground portion of a workpiece
until it has cooled sufficiently. Grinding creates heat.
25. PROPERLY SUPPORT LONG OR WIDE WORK-
PIECES. Loss of control of the workpiece can cause
serious injury.
26. NEVER PERFORM LAYOUT, ASSEMBLY, or set-up work
on the table/work area when the machine is running.
A sudden slip could cause a hand to move into the
wheel. Severe injury can result.
27. TURN THE MACHINE “OFF”, disconnect the
machine from the power source, and clean the
table/work area before leaving the machine. LOCK
THE SWITCH IN THE “OFF” POSITION to prevent
unauthorized use. Someone else might accidentally
start the machine and cause serious injury to
themselves.
28. ADDITIONAL INFORMATION regarding the safe
and proper operation of power tools (i.e. a safety
video) is available from the Power Tool Institute, 1300
Sumner Avenue, Cleveland, OH 44115-2851
(www.powertoolinstitute.com). Information is also
available from the National Safety Council, 1121
Spring Lake Drive, Itasca, IL 60143-3201. Please refer
to the American National Standards Institute ANSI
01.1 Safety Requirements for Woodworking Machines
and the U.S. Department of Labor OSHA 1910.213
Regulations.
SAVE THESE INSTRUCTIONS.
Refer to them often
and use them to instruct others.
FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS INJURY.
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A separate electrical circuit should be used for your machines. This circuit should not be less than #12 wire and should
be protected with a 20 Amp time lag fuse. If an extension cord is used, use only 3-wire extension cords which have 3prong grounding type plugs and matching receptacle which will accept the machine’s plug. Before connecting the
machine to the power line, make sure the switch (s) is in the “OFF” position and be sure that the electric current is of
the same characteristics as indicated on the machine. All line connections should make good contact. Running on low
voltage will damage the machine.
DO NOT EXPOSE THE MACHINE TO RAIN OR OPERATE THE MACHINE IN DAMP LOCATIONS.
Fig. A Fig. B
GROUNDED OUTLET BOX
CURRENT
CARRYING
PRONGS
GROUNDING BLADE
IS LONGEST OF THE 3 BLADES
GROUNDED OUTLET BOX
GROUNDING
MEANS
ADAPTER
2. Grounded, cord-connected machines intended for
use on a supply circuit having a nominal rating less
than 150 volts:
If the machine is intended for use on a circuit that has an
outlet that looks like the one illustrated in Fig. A, the
machine will have a grounding plug that looks like the plug
illustrated in Fig. A. A temporary adapter, which looks like
the adapter illustrated in Fig. B, may be used to connect
this plug to a matching 2-conductor receptacle as shown
in Fig. B if a properly grounded outlet is not available. The
temporary adapter should be used only until a properly
grounded outlet can be installed by a qualified electrician.
The green-colored rigid ear, lug, and the like, extending
from the adapter must be connected to a permanent
ground such as a properly grounded outlet box. Whenever
the adapter is used, it must be held in place with a metal
screw.
NOTE: In Canada, the use of a temporary adapter is not
permitted by the Canadian Electric Code.
IN ALL CASES, MAKE CERTAIN THAT THE
RECEPTACLE IN QUESTION IS PROPERLY
GROUNDED. IF YOU ARE NOT SURE,
HAVE A QUALIFIED ELECTRICIAN CHECK
THE RECEPTACLE.
1. All grounded, cord-connected machines:
In the event of a malfunction or breakdown, grounding
provides a path of least resistance for electric current to
reduce the risk of electric shock. This machine is
equipped with an electric cord having an equipmentgrounding conductor and a grounding plug. The plug must
be plugged into a matching outlet that is properly installed
and grounded in accordance with all local codes and
ordinances.
Do not modify the plug provided - if it will not fit the outlet,
have the proper outlet installed by a qualified electrician.
Improper connection of the equipment-grounding
conductor can result in risk of electric shock. The
conductor with insulation having an outer surface that is
green with or without yellow stripes is the equipmentgrounding conductor. If repair or replacement of the
electric cord or plug is necessary, do not connect the
equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if
the grounding instructions are not completely
understood, or if in doubt as to whether the machine is
properly grounded.
Use only 3-wire extension cords that have 3-prong
grounding type plugs and matching 3-conductor
receptacles that accept the machine’s plug, as shown in
Fig. A.
Repair or replace damaged or worn cord immediately.
POWER CONNECTIONS
MOTOR SPECIFICATIONS
Your machine is wired for 120V, 60 HZ alternating current. Before connecting the machine to the power source, make
sure the switch is in the “OFF” position.
GROUNDING INSTRUCTIONS
THIS MACHINE MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM
ELECTRIC SHOCK.
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