Craftsman 172.276750 Operator's Manual

CAUTION: Read, understand and

follow all Safety Rules and Operating
Instructions in this manual before
using this product.

Operator’s Manual

3.0 Amp/5-in. Diameter

Random Orbital Sander

• WARRANTY

• SAFETY

• UNPACKING

• DESCRIPTION

• ASSEMBLY

• OPERATION

• MAINTENANCE

• ESPAÑOL

Double Insulated

Model No. 172.276750

3025736

Sears Brands Management Corporation,
Hoffman Estates, IL 60179

See the full line of Craftsman® products
at craftsman.com

27675
6/7/12

3

SAFETY SYMBOLS

The purpose of safety symbols is to attract your attention to possible dangers. The
safety symbols and the explanations with them deserve your careful attention and
understanding. The symbol warnings do not, by themselves, eliminate any danger.
The instructions and warnings they give are no substitutes for proper accident
prevention measures.

WARNING: Be sure to read and understand all safety instructions in this
manual, including all safety alert symbols such as “DANGER,” “WARNING,” and
“CAUTION” before using this random orbital sander. Failure to follow all instructions
listed in this manual may result in electric shock, fire and/or serious personal injury.

SYMBOL SIGNAL MEANING

SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION.

May be used in conjunction with other symbols or pictographs.

DANGER: Indicates a hazardous situation which, if not avoided, will result
in death or serious injury. This signal word is to be limited to the most extreme
situations. Always follow the safety precautions to reduce the risk of fire, electric
shock, and personal injury.

WARNING: Indicates a hazardous situation which, if not avoided, could result
in death or serious injury. Always follow the safety precautions to reduce the risk
of fire, electric shock, and personal injury.

CAUTION: Indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.

Damage Prevention and Information Messages

These inform the user of important information and/or instructions that could lead
to equipment or other property damage if they are not followed. Each message is
preceded by the word “NOTE,” as in the example below:

NOTE: Equipment and/or property damage may result if these instructions are not
followed.

WARNING: To ensure safety and reliability, all repairs
should be performed by a qualified service technician.

WARNING: The operation of any power tools can result in
foreign objects being thrown into your eyes, which can result in
severe eye damage. Before beginning power tool operation,
always wear safety goggles or safety glasses with side shield
and a full face shield when needed. We recommend a Wide
Vision Safety Mask for use over eyeglasses or standard safety glasses with side
shields. Always use eye protection which is marked to comply with ANSI Z87.1
shields.

Warranty……………………………...................................……………...Page 2

Safety Symbols……………………………...................................……... Page 3

Safety Instructions…………………………...................................……..Pages 4 - 10

Unpacking ………………………………..................................……........Page 10 - 11

Description............................................................................................Pages 11 - 12

Assembly...............................................................................................Pages 13 - 16

Operation..............................................................................................Pages 16 - 19

Maintenance.........................................................................................Page 20 - 21

Accessories...........................................................................................Page 21

Parts List...............................................................................................Page 22 - 23

TABLE OF CONTENTS

SAVE THESE INSTRUCTIONS!
READ ALL INSTRUCTIONS!

2

WARNING:

Some dust created by using power tools contains chemicals
known to the State of California to cause cancer and birth defects or other
reproductive harm.

!

CRAFTSMAN PROFESSIONAL ONE YEAR LIMITED WARRANTY

FOR ONE YEAR from the date of purchase, this product is warranted
against any defects in material or workmanship. With proof of purchase,
a defective product will be replaced free of charge.

For warranty coverage details to obtain free replacement, visit the web
site: www.craftsman.com

This warranty gives you specific legal rights, and you may also have other
rights which vary from state to state.

Sears Brands Management Corporation, Hoffman Estates, IL 60179

SAFETY INSTRUCTIONS cont.

5

1. Do not force the power tool. Use the correct power tool for your application. The
correct power tool will do the job better and safer at the rate for which it was designed.

2. Do not use the power tool if the switch does not turn it on and off. Any power tool
that cannot be controlled with the switch is dangerous and must be repaired.

3. Disconnect the plug from the power source and/or the battery pack from the power
tool before making any adjustments, changing accessories, or storing power tools.
Such preventive safety measures reduce the risk of starting the power tool accidentally.

4. Store idle power tools out of the reach of children and do not allow persons

unfamiliar with the power tool or these instructions to operate the power tool.

Power tools are dangerous in the hands of untrained users.

5. Maintain power tools. Check for misalignment or binding of moving parts, breakage

of parts and any other condition that may affect the power tools operation. If
damaged, have the power tool repaired before use. Many accidents are caused by

poorly maintained power tools.

6. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are easier to control.

7. Use the power tool, accessories and tool bits etc., in accordance with these

instructions and in the manner intended for the particular type of power tool,
taking into account the working conditions and the work to be performed. Use of

the power tool for operations different from those intended could result in a hazardous
situation.

8. Use clamps or another practical way to secure and support the workpiece to a

stable platform.

9. Holding the work by hand or against your body leaves it unstable and may lead to
loss of control.

WARNING:

BE SURE to read and understand all instructions before
operating this power tool. Failure to follow all instructions listed below may
result in electric shock, fire and/or serious personal injury.

!

TOOL USE AND CARE SAFETY

WARNING:

Empty dust bag before storage to help prevent possible fire

hazard, especially when resin coating or linseed oil finishes have been sanded.

!

WARNING:

Do not permit fingers to touch
the terminals of plug when installing or removing
the plug from the outlet.

!

ELECTRICAL SAFETY

1. Double insulated tools are equipped with a polarized
plug (one blade is wider than the other). This plug
will fit in a polarized outlet only one way. If the plug

does not fit fully in the outlet, reverse the plug. If it still
does not fit, contact a qualified electrician to install a
polarized outlet. Do not change the plug in any way.

Cover of
Grounded
Outlet Box

SAFETY INSTRUCTIONS

4

WARNING: Read all safety warnings and instructions. Failure to follow

the warnings and instructions may result in electric shock, fire and/or
serious injury.

!

Save all warnings and instructions for future reference.

The term power tool in the warnings refers to your electric (corded)
power tool or battery-operated (cordless) power tool.

WORK AREA SAFETY

1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.

2. Do not operate power tools in explosive atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools create sparks which may ignite the
dust or fumes.

3. Keep children and bystanders away while operating a power tool. Distractions can
cause you to lose control.

4. Make your workshop childproof with padlocks and master switches. Lock
tools away when not in use.

5. MAKE SURE the work area has ample lighting so you can see the work and that
there are no obstructions that will interfere with safe operation BEFORE using your
power tool.

PERSONAL SAFETY

1. Stay alert, watch what you are doing and use common sense when operating a
power tool. Do not use a power tool while you are tired or under the influence of
drugs, alcohol or medication. A moment of inattention while operating power tools

may result in serious personal injury.

2. Use personal protective equipment. Always wear eye protection. Protective
equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce personal injuries.

3. Prevent unintentional starting. Ensure the switch is in the off-position before
connecting to power source and/or battery pack, picking up or carrying the tool.

Carrying power tools with your finger on the switch or energizing power tools that have
the switch on invites accidents.

4. Remove any adjusting key or wrench before turning the power tool on. A wrench
or a key left attached to a rotating part of the power tool may result in personal injury.

5. Do not overreach. Keep proper footing and balance at all times. This enables better
control of the power tool in unexpected situations.

6. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in
moving parts.

7. If devices are provided for the connection of dust extraction and collection
facilities, ensure these are connected and properly used. Use of dust collection
can reduce dust-related hazards.

SAFETY INSTRUCTIONS cont.

7

SERVICE SAFETY

1. If any part of this tool is missing or should break, bend, or fail in any way;
or should any electrical component fail to perform properly: SHUT OFF the

power switch and remove the tool’s plug from the power source and have the
missing, damaged or failed parts replaced BEFORE resuming operation.

2. Have your power tool serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the power tool is maintained.

3. If the replacement of the supply cord is necessary, this has to be done by the

manufacturer or his agent in order to avoid a safety hazard.

SAFETY RULES FOR POWER SANDERS

1. HOLD TOOL by insulated gripping surfaces when sanding where tool may contact
hidden wiring, such as walls, floors, or its own power cord. Contact with a “live” wire will
make exposed metals parts of the tool “live” and shock the operator.

2. INSPECT FOR AND REMOVE all nails, screws, staples or any embedded pieces
of metal from surface to be sanded. These protrusions could damage the sandpaper,
the cushion of the sander and cause loss of control. Following this rule will reduce the
risk of serious personal injury and damage to the sander.

3. NEVER use this or any power sander for wet sanding or liquid polishing.
Failure to follow this rule will increase the risk of electric shock.

4. ALWAYS clamp the workpiece securely so it will not move under the sander.
Unsecured work could be thrown towards the operator, causing injury.

5. DO NOT force the sander. The weight of the sander supplies adequate
pressure. Let the sander and the grit on the sandpaper do the work.

6. DO NOT sand in any one place for too long. The sander’s rapid action may
remove too much material and make the surface uneven.

SAFETY SYMBOLS FOR YOUR TOOL

The label on your tool may include the following symbols.

V.......................................................................Volts

A......................................................................Amps

Hz....................................................................Hertz

W.....................................................................Watts

min.................................................................. Minutes

....................................................................Alternating current

..................................................................Direct current

n

o

....................................................................No-load speed

....................................................................Class II construction, Double Insulated

RPM………………………............................. . .Revolutions per minute

SPM…...........................…… ……………….....Strokes per minute

OPM………………..........................………..... Orbits per minute

....................................................................Indicates danger, warning or caution.

It means attention! Your safety is involved.

The label on your tool may include the following symbols.

!

CAUTION:

Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on lumber, tools or other
obstructions while you are working with a power tool.

SAFETY INSTRUCTIONS cont.

6

WARNING:

Check extension cords before each use. If damaged replace
immediately. Never use tool with a damaged cord since touching the damaged
area could cause electrical shock, resulting in serious injury.

!

USE 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. Table 1 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.

Table 1: Minimum Gage for Cord

!

WARNING:

Do not permit fingers to touch the terminals of plug when

installing or removing the plug from the outlet.

!

WARNING:

Double insulation DOES NOT take the place of normal safety

precautions when operating this tool.

!

ELECTRICAL SAFETY

2. Power tool plugs must match the outlet. Never modify the plug in any way. Do not
use any adapter plugs with grounded power tools. Unmodified plugs and matching

outlets will reduce risk of electric shock.

3. Avoid body contact with grounded surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric shock if your body is grounded.

4. Do not expose power tools to rain or wet conditions. Water entering a power tool
will increase the risk of electric shock.

5. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the
power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged
or entangled cords increase the risk of electric shock.

6. When operating a power tool outdoors, use an extension cord suitable for outdoor
use marked “W-A” or “W”. Use of a cord suitable for outdoor use reduces the risk of
electric shock.

7. If operating a power tool in a damp location is unavoidable, use a Ground Fault
Circuit Interupter (GFCI) protected supply. Use of a GFCI reduces the risk of
electric shock.

Ampere

Rating Volts Total cord length (in feet)

More Than

0

6
10
12

6
10
12
16

18
18
16
14

16
16
16
12

Not recommended

16
14
14

14
12
12

Not More

Than

120V 25 50 100 150

AWG