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General Information; Renseignements Importants - Black & Decker 7750 Instruction Manual

4-1/2 inch angle grinder

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8A
8
10
11
EXTENSION CORDS
When using an extension cord, be sure to use one heavy enough to carry the current your
product will draw and is in good condition . An undersized cord will cause a drop in line
voltage resulting in loss of power and overheating. The following table shows the correct size
to use depending on cord length and nameplate ampere rating. If in doubt, use the next
heavier gage. The smaller the gage number, the heavier the cord.
Minimum Gage for Cord Sets
Volts
Total Length of Cord in Feet
120V
0-25
240V
0-50
Ampere Rating
More
Not more
Than
Than
0
-
6
18
6
-
10
18
10 -
12
16
12 -
16
14
MOTOR
Your Black & Decker tool is powered by a Black & Decker-built motor. Be sure your power
supply agrees with nameplate marking. 120 Volts AC only means your tool will operate on
standard 60 Hz household power. Do not operate AC tools on DC. A rating of 120 volts
AC/DC means that you tool will operate on standard 60 Hz AC or DC power. This information
is printed on the nameplate. Lower voltage will cause loss of power and can result in over-
heating. All Black & Decker tools are factory-tested; if this tool does not operate, check the
power supply.
AUXILIARY HANDLE (FIG. 1)
An auxiliary handle (5) is furnished with your grinder and can be screwed into either side of
the grinder housing. This handle SHOULD BE USED AT ALL TIMES to maintain complete
control of the tool. TIGHTEN SECURELY.
STARTING AND STOPPING THE TOOL
To start the tool, slide the ON/OFF switch forward (1). For continuous operation, slide the
switch (2) fully forward and press front end down. To stop the tool, release the ON/OFF
switch. To stop the tool while running in continuous mode, press the rearward part of the
switch.
NOTE: Do not switch the tool on or off while under load conditions. Allow the grinder to run
up to full speed before touching the surface to be ground. Lift the tool from the surface before
turning the tool off.
CAUTION: Allow the tool to stop before setting down.
OVERLOAD
Overloading will cause damage to the motor of your angle grinder. This can happen if your
angle grinder is subjected to heavy use for prolonged periods of time. Do not in any
circumstances, attempt to exert too much pressure on your angle grinder to speed up your
work. The abrasive accessories operate more efficiently when light pressure is exerted, thus
avoiding a drop in the speed of your angle grinder.
GRINDING AND WIRE BRUSHING
ATTACHING THE WHEEL GUARD (FIG. 2)
Turn off and unplug the tool. NEVER GRIND OR BRUSH WITHOUT GUARD IN PLACE.
• Place the angle grinder on a table, spindle (9) facing up.
• Placing the spring washer (8) over the spindle and locate it on the shoulder (10).
• Place the guard onto the tool as shown.
• Place the flange (11) over the spindle with the protrusions facing towards the guard. Make
sure that the screws are tight and that the guard can be rotated.
FITTING DEPRESSED CENTER WHEELS (FIGS. 3,4,5,6)
Turn off and unplug the tool.
CAUTION: Never use any grinding wheels without the proper
guard.
1.)Ensure that the guard is fitted properly. Place the inner flange (12) on the spindle (9) as
shown (Fig. 3). Ensure that it is located on the two flats.
2.)Place the grinding wheel (4) on the spindle (9) and inner flange (12) as shown Fig. 4.
3.)Fit the threaded outer flange (14) making sure it is facing in the correct direction for the type
of wheel fitted. For thick grinding wheels Fig. 5, the flange (14) is fitted with the raised portion
facing towards the wheel. For thin grinding wheels, the flange (14) is fitted with the inner
portion facing away from the wheel.
4.)Press in the spindle lock button and rotate the spindle until it locks. Keeping the lock button
pressed in, tighten the outer flange with the spanner wrench provided as shown in Fig. 6.
Hubbed wheels do not require mounting flanges and may be tightened with standard
wrenches.
5.)When using a depressed-center wheel, hold the tool so that an angle of approximately 30°
exists between the wheel and the work.
WARNING: Check rated speed on depressed-center wheel. Never use a wheel with rated
speed lower than the speed on the nameplate of the tool.
Note: Sanding flap discs are considered to be grinding wheels and must be used with guards.
FITTING WIRE BRUSHES
Wire cup brushes screw directly on the spindle of the machine without the use of flanges.
When using wire brushes, thread firmly on spindle by hand. The guard may be removed for
brushing with flat wire brushes.
EDGE GRINDING
Edge grinding may be done with Type 27 depressed center wheels specifically designed for
this purpose. These wheels are available locally. They must not be subject to side pressure.
CAUTION: Wheels used for edge grinding may break if they bend or twist while being used
for cut-off work or deep grinding. To reduce the risk of serious injury, limit the use of these
wheels to shallow cutting and notching (less than 1/2" in depth). The open side of the guard
must be positioned away from the operator.
REMOVING THE WHEEL GUARD (FIG. 7 FOR SANDING AND USING FLAT WIRE
BRUSHES.)
TURN OFF AND UNPLUG THE TOOL.
NOTE: To prevent loss of control, do not set tool down until accessory has completely
stopped turning.
As shown in Fig. 7, place the grinder on a table, spindle up. Use a screwdriver to remove the
9
12
26-50
51-100
101-150
51-100 101-200
201-300
American Wire Gage
16
16
14
16
14
12
16
14
12
12
Not Recommended
SANDING
3 screws (6). Remove the flange (7), guard (4) and spring washer (8). Store these parts
carefully.
PRECAUTIONS TO TAKE WHEN SANDING PAINT
1. Sanding of lead based paint is NOT RECOMMENDED due to the difficulty of controlling
the contaminated dust. The greatest danger of lead poisoning is to children and pregnant
women.
2. Since it is difficult to identify whether or not a paint contains lead without a chemical analy-
sis, we recommend the following precautions when sanding any paint:
PERSONAL SAFETY
1. No children or pregnant women should enter the work area where the paint sanding is
being done until all cleanup is completed.
2. A dustmask or respirator should be worn by all persons entering the work area. The filter
should be replaced daily or whenever the wearer has difficulty breathing.
NOTE: ONLY THOSE DUSTMASKS SUITABLE FOR WORKING WITH LEAD PAINT
DUST AND FUMES SHOULD BE USED. ORDINARY PAINTING MASKS DO NOT OFFER
THIS PROTECTION. SEE YOUR LOCAL HARDWARE DEALER FOR THE NIOSH
APPROVED PROPER MASK.
ENVIRONMENTAL SAFETY
1. Paint should be removed in such a manner as to minimize the amount of dust generated.
2. Areas where paint removal is occurring should be sealed with plastic sheeting of 4 mils
thickness.
3. Sanding should be done in a manner to reduce tracking of paint dust outside the work
area.
FITTING ABRASIVE DISCS
TURN OFF AND UNPLUG THE TOOL.
Use an abrasive disc with a backing pad for sanding with your angle grinder.
1. Remove the guard.
2. Place the flange, (backing pad and abrasive disc sold separately) and outer flange on the
spindle as shown in Figure 8. Figure 8A shows how to attach an abrasive disc with a rub-
ber backing pad.
3. Tighten the abrasive disc as shown in Figure 9 by depressing the spindle lock button and
turning the abrasive disc by hand.

GENERAL INFORMATION

HELPFUL HINTS
• Hold your angle grinder with one hand on the body and the other hand firmly around the side
handle as shown in Figure 10.
• Always position the guard so that as much of the exposed disc as possible is pointing away
from you.
• Be prepared for a stream of sparks when the disc touches the metal. Direct away from
people and flammable materials.
• Maintain an angle between the disc and work surface (Fig. 11) of approximately 30° when
grinding and 10°-15° when sanding ( Fig. 12) for best tool control, material removal, and
minimal loading.
WARNING: Always wear eye protection while operating this power tool including
face and body protection when brushing.
TOOL MAINTENANCE
CLEANING: Blowing dust and grit out of the motor housing using compressed air is a
necessary maintenance procedure. Dust and grit containing particles from metal grinding
often accumulate on interior surfaces and could create an electrical shock hazard if not
cleaned out. Never use solvents or harsh chemicals, use only mild soap and damp cloth to
clean the tool. Never let any liquid get inside the tool; never immerse any part of the tool into
a liquid.
LUBRICATION
Black & Decker tools are properly lubricated at the factory and are ready for use. Tools should
be lubricated regularly every year depending on usage. (Tools used on heavy duty jobs and
tools exposed to heat may require more frequent lubrication.) This lubrication should be
attempted only by trained power tool repairperson's such as those at Black & Decker service
centers or in other qualified service personnel.
IMPORTANT
To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustments should
be performed by Black & Decker service centers or other qualified service personnel, always
using Black & Decker replacement parts.
ACCESSORIES
Recommended accessories for use with your tool are available from your local dealer or
authorized service center. If you need assistance regarding accessories, please call:
1-800-54-HOW TO (1-800-544-6986).
WARNING: The use of any accessory not recommended for use with this tool could be
hazardous.
SERVICE INFORMATION
Black & Decker offers a full network of company-owned and authorized service locations
throughout North America. All Black & Decker Service Centers are staffed with trained
personnel to provide customers with efficient and reliable power tool service. Whether you
need technical advice, repair, or genuine factory replacement parts, contact the Black &
Decker location nearest you. To find your local service location, refer to the yellow page
directory under "Tools—Electric" or call: 1-800-54-HOW-TO (1-800-544-6986).
FULL TWO-YEAR HOME USE WARRANTY
Black & Decker (U.S.) Inc. warrants this product for two years against any defects in
material or workmanship. The defective product will be replaced or repaired at no charge in
either of two ways.
The first, which will result in exchanges only, is to return the product to the retailer from
whom it was purchased (provided that the store is a participating retailer). Returns should
be made within the time period of the retailer's policy for exchanges (usually 30 to 90 days
after the sale). Proof of purchase may be required. Please check with the retailer for their
specific return policy regarding returns that are beyond the time set for exchanges.
The second option is to take or send the product (prepaid) to a Black & Decker owned or
authorized Service Center for repair or replacement at our option. Proof of purchase may be
required. Black & Decker owned and authorized Service Centers are listed under
"Tools–Electric" in the yellow pages of the phone director.
This warranty does not apply to accessories. This warranty gives you specific legal rights
and you may have other rights which vary from state to state. Should you have any
questions, contact the manager of your nearest Black & Decker Service Center. This
product is not intended for commercial use.
FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are
missing, call 1-800-544-6986 for a free replacement.
Black & Decker (U.S.) Inc.,
701 E. Joppa Rd.
Towson, MD 21286 U.S.A.
AVANT DE RETOURNER LE PRODUIT, PEU IMPORTE
LA RAISON PRIÈRE DE COMPOSER 1 800 544-6986

RENSEIGNEMENTS IMPORTANTS

• Attendre que la meule atteigne sa vitesse maximale avant de la poser sur
l'ouvrage.
• Tenir la meuleuse à l'angle approprié, tel qu'illustré à la fig.11, fig. 12.
AVERTISSEMENT : IMPORTANTES MESURES DE SÉCURITÉ
AVERTISSEMENT! Vous devez lire et comprendre toutes les instructions. Le non-
respect, même partiel, des instructions ci-après entraîne un risque de choc électrique,
d'incendie et/ou de blessures graves.
CONSERVEZ CES INSTRUCTIONS.
See 'Tools-Electric'
– Yellow Pages –
for Service & Sales

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