RIDGID Sander R2740 User Guide

OPERATOR’S MANUAL  
3 in. x 18 in. BELT SANDER  
VARIABLE SPEED  
DOUBLE INSULATED  
R2740  
Your belt sander has been engineered and manufactured to our high standard for dependability, ease of operation, and  
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.  
WARNING:  
To reduce the risk of injury, the user must read and understand the operator’s manual before using this product.  
Thank you for buying a RIDGID® product.  
SAVE THIS MANUAL FOR FUTURE REFERENCE  
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GENERAL SAFETY RULES  
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.  
Do not overreach. keep proper footing and balance  
at all times. This enables better control of the power tool  
in unexpected situations.  
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.  
If devices are provided for the connection of dust  
extraction and collection facilities, ensure these are  
connected and properly used. Use of these devices can  
reduce dust-related hazards.  
WARNING:  
Read all instructions Failure to follow all  
instructions listed below may result in electric  
shock, fire and/or serious injury. The term “power  
tool” in all of the warnings listed below refers  
to your mains-operated (corded) power tool or  
battery-operated (cordless) power tool.  
SAVE THESE INSTRUCTIONS  
WORk AREA SAFETY  
keep work area clean and well lit. Cluttered or dark  
areas invite accidents.  
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.  
Do not wear loose clothing or jewelry. Contain long  
hair. Loose clothes, jewelry, or long hair can be drawn  
into air vents.  
Do not use on a ladder or unstable support. Stable  
footing on a solid surface enables better control of the  
tool in unexpected situations.  
keep children and bystanders away while operating a  
power tool. Distractions can cause you to lose control.  
ELECTRICAL SAFETY  
POWER TOOL USE AND CARE  
Power tool plugs must match the outlet. Never modify  
the plug in any way. Do not use any adapter plugs with  
earthed (grounded) power tools. Unmodified plugs and  
matching outlets will reduce risk of electric shock.  
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.  
Avoid body contact with earthed or grounded surfaces  
such as pipes, radiators, ranges and refrigerators.  
There is an increased risk of electric shock if your body  
is earthed or grounded.  
Do not expose power tools to rain or wet conditions.  
Water entering a power tool will increase the risk of  
electric shock.  
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.  
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.  
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.  
Maintain power tools. Check for misalignment or  
binding of moving parts, breakage of parts and any  
other condition that may affect the power tool’s  
operation. If damaged, have the power tool repaired  
before use. Many accidents are caused by poorly  
maintained power tools.  
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.  
When operating a power tool outdoors, use an  
extension cord suitable for outdoor use. Use of a  
cord suitable for outdoor use reduces the risk of electric  
shock.  
PERSONAL SAFETY  
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.  
Use safety equipment. Always wear eye protection.  
Safety equipment such as dust mask, non-skid safety  
shoes, hard hat, or hearing protection used for appropriate  
conditions will reduce personal injuries.  
keep cutting tools sharp and clean. Properly maintained  
cutting tools with sharp cutting edges are less likely to  
bind and are easier to control.  
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.  
Avoid accidental starting. Ensure the switch is in the  
off-position before plugging in. Carrying power tools  
with your finger on the switch or plugging in power tools  
that have the switch on invites accidents.  
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GENERAL SAFETY RULES  
SERVICE  
When servicing a power tool, use only identical  
replacement parts. Follow instructions in the  
Maintenance section of this manual. Use of  
unauthorized parts or failure to follow Maintenance  
instructions may create a risk of shock or injury.  
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.  
WARNING!  
To reduce risk of injury, user must read instruction  
manual.  
SPECIFIC SAFETY RULES  
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  
by an Authorized Service Center. Following this rule  
will reduce the risk of shock, fire, or serious injury.  
Hold power tool by insulated gripping surfaces when  
performing an operation where the cutting tool may  
contact hidden wiring or its own cord. Contact with a  
“live” wire will make exposed metal parts of the cutting  
tool “live” and shock the operator.  
know your power tool. Read operator’s manual  
carefully. Learn its applications and limitations, as  
well as the specific potential hazards related to this  
power tool. Following this rule will reduce the risk of  
electric shock, fire, or serious injury.  
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. A wire gauge size (A.W.G.) of at least 14 is  
recommended for an extension cord 50 feet or less in  
length. Acordexceeding100feetisnotrecommended.  
If in doubt, use the next heavier gauge. The smaller  
the gauge number, the heavier the cord. An undersized  
cord will cause a drop in line voltage resulting in loss of  
power and overheating.  
Always wear safety glasses. Everyday eyeglasses  
have only impact-resistant lenses; they are NOT safety  
glasses. Following this rule will reduce the risk of serious  
personal injury.  
Protect your lungs. Wear a face or dust mask if the  
operation is dusty. Following this rule will reduce the  
risk of serious personal injury.  
Inspect for and remove all nails from lumber before  
using this power tool. Following this rule will reduce the  
risk of serious personal injury.  
Protect your hearing. Wear hearing protection during  
extended periods of operation. Following this rule will  
reduce the risk of serious personal injury.  
If the power supply cord is damaged, it must be  
replaced only by the manufacturer or by an authorized  
service center to avoid risk.  
Inspect power tool cords periodically and, if damaged,  
have repaired at your nearest Authorized Service  
Center. Constantly stay aware of cord location.  
Following this rule will reduce the risk of electric shock  
or fire.  
Save these instructions. Refer to them frequently and  
use them to instruct others who may use this power tool.  
If you loan someone this power tool, loan them these  
instructions also.  
Check damaged parts. Before further use of the power  
tool, a guard or other part that is damaged should be  
carefully checked to determine that it will operate  
WARNING:  
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, such as those dust  
masks that are specially designed to filter out microscopic particles.  
4
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SYMBOLS  
Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper  
interpretation of these symbols will allow you to operate the product better and safer.  
SYMBOL  
NAME  
DESIGNATION/EXPLANATION  
V
Volts  
Voltage  
Current  
A
Hz  
W
Amperes  
Hertz  
Frequency (cycles per second)  
Watt  
Power  
min  
Minutes  
Time  
Alternating Current  
Type of current  
Direct Current  
Type or a characteristic of current  
Rotational speed, at no load  
n
No Load Speed  
o
Class II Tool  
Per Minute  
Double-insulated construction  
Revolutions, strokes, surface speed, orbits etc., per minute  
.../min  
Do not expose to rain or use in damp locations.  
Wet Conditions Alert  
To reduce the risk of injury, user must read and understand  
operator’s manual before using this product.  
Read The Operator’s Manual  
Always wear safety goggles or safety glasses with side shields  
and, as necessary, a full face shield when operating this  
product.  
Eye Protection  
Safety Alert  
Precautions that involve your safety.  
Failure to keep your hands away from the blade will result in  
serious personal injury.  
No Hands Symbol  
Failure to keep your hands away from the blade will result in  
serious personal injury.  
No Hands Symbol  
No Hands Symbol  
Failure to keep your hands away from the blade will result in  
serious personal injury.  
Failure to keep your hands away from the blade will result in  
serious personal injury.  
No Hands Symbol  
Hot Surface  
To reduce the risk of injury or damage, avoid contact with any  
hot surface.  
5
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SYMBOLS  
The following signal words and meanings are intended to explain the levels of risk associated with this product.  
SYMBOL  
SIGNAL  
MEANING  
Indicates an imminently hazardous situation, which, if not avoided, will  
result in death or serious injury.  
DANGER:  
Indicates a potentially hazardous situation, which, if not avoided, could  
result in death or serious injury.  
WARNING:  
CAUTION:  
Indicates a potentially hazardous situation, which, if not avoided, may  
result in minor or moderate injury.  
(Without Safety Alert Symbol) Indicates a situation that may result in  
property damage.  
CAUTION:  
SERVICE  
WARNING:  
Servicing requires extreme care and knowledge and should  
be performed only by a qualified service technician. For  
service we suggest you return the product to your nearest  
AUTHORIZEDSERVICECENTERforrepair. Whenservicing,  
use only identical replacement parts.  
To avoid serious personal injury, do not attempt  
to use this product until you read thoroughly and  
understand completely the operator’s manual.  
If you do not understand the warnings and  
instructions in the operator’s manual, do not use  
this product. Call RIDGID® customer service for  
assistance.  
WARNING:  
The operation of any power tool 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 shields and, when needed, a full face shield. We recommend 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.  
SAVE THESE INSTRUCTIONS  
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ELECTRICAL  
DOUBLE INSULATION  
EXTENSION CORDS  
Double insulation is a concept in safety in electric power  
tools, which eliminates the need for the usual three-wire  
grounded power cord. All exposed metal parts are isolated  
from the internal metal motor components with protecting  
insulation. Double insulated tools do not need to be  
grounded.  
When using a power tool at a considerable distance from  
a power source, be sure to use an extension cord that has  
the capacity to handle the current the tool will draw. An  
undersized cord will cause a drop in line voltage, resulting in  
overheating and loss of power. Use the chart to determine  
the minimum wire size required in an extension cord. Only  
round jacketed cords listed by Underwriter’s Laboratories  
(UL) should be used.  
WARNING:  
When working outdoors with a tool, use an extension  
cord that is designed for outside use. This type of cord is  
designated with “WA” on the cord’s jacket.  
The double insulated system is intended to protect  
the user from shock resulting from a break in the  
tool’s internal wiring. Observe all normal safety  
precautions to avoid electrical shock.  
Before using any extension cord, inspect it for loose or  
exposed wires and cut or worn insulation.  
NOTE: Servicing of a tool with double insulation requires  
extreme care and knowledge of the system and should  
be performed only by a qualified service technician. For  
service, we suggest you return the tool to your nearest  
authorized service center for repair. Always use original  
factory replacement parts when servicing.  
**Ampere rating (on tool data plate)  
0-ꢀ.0  
ꢀ.1-3.4 3.5-5.0 5.1-7.0 7.1-1ꢀ.0 1ꢀ.1-16.0  
Cord Length  
Wire Size (A.W.G.)  
ꢀ5'  
50'  
16  
16  
16  
16  
16  
16  
16  
16  
14  
16  
14  
1ꢀ  
14  
14  
10  
14  
1ꢀ  
ELECTRICAL CONNECTION  
100'  
This product has a precision-built electric motor. It should  
be connected to a power supply that is 120 volts, 60 Hz,  
AC only (normal household current). Do not operate this  
tool on direct current (DC). A substantial voltage drop will  
cause a loss of power and the motor will overheat. If your  
tool does not operate when plugged into an outlet, double-  
check the power supply.  
**Used on 12 gauge - 20 amp circuit.  
NOTE: AWG = American Wire Gauge  
WARNING:  
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. Failure to do so can  
result in serious personal injury.  
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.  
7
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FEATURES  
PRODUCT SPECIFICATIONS  
Belt Size ..........................................................3 in. x 18 in.  
Sanding Surface............................................... 17.5 sq. in.  
No Load Speed ...................................... 400 - 950 ft./min.  
Input ...............................1ꢀ0 V, 60 Hz, AC only, 6.5 Amps  
Net Weight.............................................................. 5.8 lbs.  
VARIABLE SPEED  
CONTROL DIAL  
LOCK-ON  
BUTTON  
SWITCH  
TRIGGER  
TRACKING  
SCREW  
DUST  
BAG  
LIGHTED PLUG  
REAR  
HANDLE  
DRIVE  
ROLLER  
SANDING  
BELT TENSION  
RELEASE LEVER  
BELT  
FRONT  
ROLLER  
Fig. 1  
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FEATURES  
LOCk-ON BUTTON  
kNOW YOUR BELT SANDER  
The lock-on feature allows you to lock the switch trigger in  
the ON position. Locking the switch trigger on allows you to  
operate the sander for extended periods of time.  
See Figure 1.  
The safe use of this product requires an understanding of  
the information on the tool and in this operator’s manual as  
well as a knowledge of the project you are attempting. Before  
use of this product, familiarize yourself with all operating  
features and safety rules.  
POWER CORD  
The 1ꢀ-foot cord has a built-in cord wrap.  
SWITCH TRIGGER  
To turn the sander ON, depress the switch trigger. Release  
switch trigger to turn your sander OFF.  
BELT TENSION RELEASE LEVER  
The tension release lever aids in quick and easy belt  
changes.  
TRACkING SCREW  
The tracking screw allows you to easily adjust the belt  
tracking.  
DUST BAG  
The dust bag attaches to the sander and keeps dust to a  
minimum.  
VARIABLE SPEED CONTROL DIAL  
The variable speed control feature allows the sander to  
develop a no load speed that can be adjusted from 400  
to 950 feet/min. by rotating the dial from A (slowest) to F  
(fastest).  
ERGONOMIC DESIGN  
The design provides for easy handling. It is designed for  
comfort and ease of operation in different positions and at  
different angles.  
LIGHTED PLUG  
The lighted plug helps to easily identify live tools.  
ASSEMBLY  
UNPACkING  
This product has been shipped completely assembled.  
WARNING:  
If any parts are damaged or missing do not operate  
this product until the parts are replaced. Failure to  
heed this warning could result in serious personal  
injury.  
Carefully remove the product and any accessories from  
the box. Make sure that all items listed in the packing list  
are included.  
Inspect the product carefully to make sure no breakage  
or damage occurred during shipping.  
Do not discard the packing material until you have carefully  
WARNING:  
inspected and satisfactorily operated the product.  
Do not attempt to modify this product or create  
accessories not recommended for use with this  
product. Any such alteration or modification is  
misuse and could result in a hazardous condition  
leading to possible serious personal injury.  
If any parts are damaged or missing, please call  
1-866-539-1710 for assistance.  
PACkING LIST  
Variable Speed Belt Sander  
Dust Collection Bag  
Sanding Belt  
WARNING:  
Operator’s Manual  
Do not connect to power supply until assembly  
is complete. Failure to comply could result in  
accidental starting and possible serious personal  
injury.  
9
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OPERATION  
APPLICATIONS  
You may use this product for the purposes listed below:  
WARNING:  
Do not allow familiarity with products to make you  
careless. Remember that a careless fraction of a  
second is sufficient to inflict serious injury.  
Sanding wood, metals, and plastics  
Smoothing rough boards, chamfering, rounding edges  
Removing rust, paint, varnishes, and stains  
WARNING:  
WARNING:  
If your sanding job becomes dusty or if you have a  
breathing condition, wear a dust mask or respirator  
to prevent damage to your health.  
Always wear safety goggles or safety glasses with  
side shields when operating power tools. Failure  
to do so could result in objects being thrown into  
your eyes resulting in possible serious injury.  
SELECTING SANDING BELTS  
Selecting the correct size and type of sanding belt is an  
important step in achieving a high quality sanded finish. Alu-  
minum oxide, silicon carbide, and other synthetic abrasives  
are best for power sanding.  
WARNING:  
Do not use any attachments or accessories  
not recommended by the manufacturer of this  
product. The use of attachments or accessories  
not recommended can result in serious personal  
injury.  
In general, when sanding, coarse grit removes the most ma-  
terial and fine grit produces the best finish. The condition of  
the surface to be sanded determines which grit will do the  
best job. If the surface is rough, start with a coarse grit and  
sand until the surface is uniform. Then use medium grit to  
remove scratches left by the coarser grit. Finally, use finer  
grit for finishing the surface. Always continue sanding with  
each grit until the surface is uniform.  
WARNING:  
Before connecting the sander to a power supply,  
make sure it is not in the locked-on position. Failure  
to do so could result in accidental starting of the  
tool resulting in serious injury.  
SETTING THE BELT SANDER SPEED  
Refer to the chart below for belt sander speed selections.  
SPEED  
BELT GRIT  
MATERIAL  
A
B
C
D
E
F
40  
60  
80  
100  
150  
240  
UNDRESSED  
LUMBER  
     
SOFTWOOD  
CHIPBOARD  
   
   
   
LUMBER  
   
RUST REMOVAL  
PAINTED SURFACE  
   
   
     
NON-FERROUS  
METAL  
   
10  
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OPERATION  
VARIABLE SPEED  
CONTROL DIAL  
(A TO F)  
VARIABLE SPEED CONTROL DIAL  
See Figure 2.  
The sander has a variable speed control dial, A (slowest)  
to F (fastest), designed to allow operator control of belt  
speed. To increase belt speed, turn the variable speed  
control dial to a higher setting. Turn to a lower setting to  
decrease belt speed. Refer to the chart on page 10 for proper  
speed selections.  
PROPER HAND PLACEMENT  
See Figure 3.  
The front and rear handles allow two-handed operation  
which aids in maintaining control, keeping sander level  
with workpiece, and keeping hands clear of sanding belt.  
When carrying or operating the sander always hold the front  
handle with the left hand and the rear handle with the right  
hand as shown.  
WARNING:  
Keep hands and fingers clear of moving sanding  
belt, front pulley, and drive roller assembly. Failure  
to do so will result in the sanding of the hands or  
fingers possibly causing serious injury.  
Fig. ꢀ  
WARNING:  
Do not let your fingers rest over the front or right  
edge of the sander. If the sanding belt were to run  
off, or if it were not properly adjusted, your fingers  
could come in contact with the moving sanding  
belt resulting in possible serious injury.  
REAR  
HANDLE  
TURNING ON/OFF THE SANDER  
See Figure 4.  
FRONT  
HANDLE  
To turn on the sander: Depress the switch trigger.  
To turn off the sander: Release the switch trigger.  
SOFT START FEATURE  
Soft start is a feature whereby the motor gradually ramps  
up to the selected top speed. For example, when a speed  
is selected with the speed limiting dial and the sander is  
stopped and then activated again, the sander will gradually  
ramp up to the previous speed setting once the switch trigger  
is pressed again.  
KEEP HANDS AND FINGERS AWAY  
FROM THESE AREAS AT ALL TIMES  
Fig. 3  
SWITCH  
TRIGGER  
Fig. 4  
11  
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OPERATION  
LIFT BELT TENSION RELEASE LEVER  
TO REMOVE SANDING BELT  
TO INSTALL/CHANGE SANDING BELT  
See Figures 5 - 6.  
Unplug the sander.  
Position sander as shown.  
WARNING:  
ARROW  
Keep hands and fingers clear of front roller and  
spring mechanism at all times. Failure to do so  
could result in fingers getting pinched, causing  
possible serious injury.  
Belt tension must be released in order to install and remove  
sanding belt:  
Release belt tension by lifting tension release lever.  
BELT TENSION  
RELEASE  
LEVER  
Install sanding belt; make sure arrow inside of belt is  
pointing in the direction of rotation, which is clockwise  
when looking into open side of sander.  
SANDING  
BELT  
LOWER BELT TENSION RELEASE  
LEVER TO SECURE SANDING BELT  
NOTE: Match the arrow on the sanding belt to that of the  
Fig. 5  
housing.  
SANDING BELTS WITH DIRECTION OF ROTATION  
ARROWS MUST BE INSTALLED CORRECTLY  
CAUTION:  
If the sanding belt is not a bidirectional belt,  
ensure that the arrow inside the belt is pointing  
in the direction of the rotation (clockwise when  
looking into the open side of the sander). Installing  
unidirectional sanding belts backwards can create  
a hazardous condition.  
Align the sanding belt to its correct position.  
Lower tension release lever to secure the sanding belt.  
NOTE: This sander is equipped with automatic tracking,  
which in most instances will cause the sanding belt to remain  
centered. If the sanding belt does not stay in the center area,  
manual adjustment of the belt tracking may be necessary.  
To manually adjust, see Manually Adjusting Sanding Belt  
Tracking in the Adjustments section of this manual.  
SANDING BELTS WITHOUT DIRECTION OF ROTATION  
ARROWS CAN BE USED IN EITHER DIRECTION  
Fig. 6  
1ꢀ  
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OPERATION  
sanding belt will return to its normal and correct position on  
the drive roller and front roller.  
LOCkING ON THE SANDER  
See Figure 7.  
Use a coarser belt when heavy sanding is desired, not  
heavy pressure. The importance of this cannot be over-  
emphasized. Weight has been built into the tool to give the  
most efficient pressure at the proper location.  
The lock-on feature allows you to lock the switch trigger in  
the ON position. Locking the switch trigger on allows you to  
operate the sander for extended periods of time.  
If you have the lock-on feature engaged during use and the  
sander is accidentally disconnected from the power supply,  
disengage the lock-on feature immediately. Also, do not  
lock the switch trigger if you might need to suddenly stop  
the sander.  
NOTE: The front roller of the sander was not designed for  
contour sanding. Sanding on the front roller could cause  
irregularity in sanding belt tracking and will damage the  
front roller.  
To lock-on the sander:  
CAUTION:  
Sanding on the front roller may cause the tool to  
kickback toward the operator, creating a risk of  
possible injury.  
Depress the switch trigger.  
Push in the lock-on button.  
Release the switch trigger.  
Release the lock-on button.  
NOTE: To release the lock, depress and release the switch  
trigger.  
LOCK-ON  
BUTTON  
OPERATING THE SANDER  
See Figure 8.  
Clamp or otherwise secure the work to prevent it from  
moving under the sander.  
WARNING:  
Unsecured work could be thrown back toward  
operator causing injury.  
SWITCH  
TRIGGER  
Before placing sander on work surface, squeeze the switch  
trigger and let the motor reach its maximum speed, then  
lower the sander to the work surface with a slight forward  
motion. Using the rear handle to control the sander and the  
front handle only to guide it, move it slowly over the work.  
Allowing the sander to remain in one place will result in an  
uneven surface.  
Fig. 7  
WARNING:  
Keep a firm grip on sander with both hands at all  
times. Failure to do so could result in loss of control  
leading to possible serious injury.  
The sander was designed to provide the proper weight on  
the sanding belt.  
Excessive pressure will result in the following:  
Uneven work.  
Clogged sanding belts.  
Premature sanding belt wear. Removal rate will not  
increase.  
Motor damage.  
Irregular sanding belt tracking.  
NOTE: If the sanding belt moves while sanding, you may  
be applying too much pressure. When this occurs, remove  
sander from workpiece. If belt tracking is properly adjusted,  
Fig. 8  
13  
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OPERATION  
EMPTYING THE DUST BAG  
See Figure 10.  
WARNING:  
Do not use the dust collection bag when sanding  
metal. Using the dust collection bag when sanding  
metal creates a fire hazard, which could damage  
the tool and lead to serious personal injury.  
For more efficient operation, empty dust bag when no more  
than half full. This will permit the air to flow through the bag  
better. Always empty and clean the dust bag thoroughly  
upon completion of a sanding operation and before placing  
the sander in storage.  
DUST BAG  
See Figure 9.  
WARNING:  
The dust bag provides a dust collection system for the  
sander. It should be installed over the exhaust hole located  
on the side of the sander. For more efficient operation, empty  
dust bag when half full.  
Collected sanding dust from sanding surface  
coatings such as polyurethanes, linseed oil, etc.,  
can self-ignite in the sander dust bag or elsewhere  
and cause fire. To reduce the risk of fire, always  
empty the dust bag frequently while sanding. Never  
store or leave a sander without totally emptying its  
dust bag. Also follow the recommendations of the  
coatings manufacturers.  
Do not connect sander to power supply before installing  
dust bag.  
To install/remove dust bag:  
Unplug the sander.  
Place the opening of dust bag over dust exhaust of the  
To empty the dust bag:  
Unplug the sander.  
sander.  
DUST BAG  
OPENING  
Remove dust bag from sander.  
Open zipper.  
Shake out dust.  
Replace dust bag on sander.  
DUST  
EXHAUST  
DUST BAG  
zIPPER  
Fig. 9  
DUST BAG  
Fig. 10  
14  
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ADjUSTMENTS  
Slowly turn the tracking screw clockwise until the sanding  
belt is positioned at the edge of the platen. Do not allow  
the sanding belt to extend past the edge of the platen.  
MANUALLY ADjUSTING SANDING BELT  
TRACkING  
See Figure 11.  
This sander features an automatic tracking system designed  
to keep the sanding belt centered. If edge sanding is desired,  
manual adjustment of the belt will be necessary.  
WARNING:  
Keep hands and fingers away from moving  
sanding belt. Any part of body coming in contact  
with moving sanding belt could result in serious  
injury. Do not wear loose clothing or jewelry when  
operating sander. They could get caught in moving  
parts and foreign objects could get thrown from  
sander causing injury.  
To manually adjust belt position:  
Connect the sander to power supply.  
Set the variable speed control dial to the lowest setting  
(A).  
With sander positioned as shown below, pull switch  
trigger.  
When edge sanding is completed, return the belt to the  
default centered position by turn the tracking screw  
counterclockwise until the belt is positioned correctly.  
NOTE: This position is for adjustments only. Sanding belt  
should not be in contact with workpiece or any foreign  
objects when making belt tracking adjustments.  
PLATEN  
SANDING  
BELT  
TURN TRACKING SCREW TO ADJUST SANDING BELT  
Fig. 11  
15  
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MAINTENANCE  
BRUSH REPLACEMENT  
See Figure 12.  
WARNING:  
When servicing use only identical RIDGID®  
replacement parts. Use of any other parts may  
create a hazard or cause product damage.  
NOTE: This belt sander is equipped with externally  
accessible brushes.  
Unplug the sander.  
WARNING:  
WARNING:  
Failure to unplug the tool could result in accidental  
starting causing possible serious injury.  
Always wear safety goggles or safety glasses with  
side shields during power tool operation or when  
blowing dust. If operation is dusty, also wear a  
dust mask.  
Remove brush caps (ꢀ) using a screwdriver.  
Remove brush assemblies (ꢀ).  
Check for wear. Replace both brush assemblies when  
GENERAL MAINTENANCE  
either has less than 1/4 in. length of carbon remaining.  
Avoid using solvents when cleaning plastic parts. Most  
plastics are susceptible to damage from various types of  
commercial solvents and may be damaged by their use. Use  
clean cloths to remove dirt, dust, oil, grease, etc.  
NOTE: Do not replace one side without replacing the  
other.  
Reassemble using new brush assemblies. Make sure  
curvature of brush matches curvature of motor and that  
brush moves freely in brush tube.  
WARNING:  
Reassemble by reversing the steps listed above.  
Do not at any time let brake fluids, gasoline,  
petroleum-based products, penetrating oils, etc.,  
come in contact with plastic parts. Chemicals can  
damage, weaken or destroy plastic which may  
result in serious personal injury.  
Tighten all brush caps securely. Do not over tighten.  
Electric tools used on fiberglass material, wallboard,  
spackling compounds, or plaster are subject to accelerated  
wear and possible premature failure because the fiberglass  
chips and grindings are highly abrasive to bearings, brushes,  
commutators, etc. Consequently, we do not recommended  
using this tool for extended work on these types of materials.  
However, if you do work with any of these materials, it is  
extremely important to clean the tool using compressed  
air.  
BRUSH  
CAP  
LUBRICATION  
BRUSH  
ASSEMBLY  
All of the bearings in this tool are lubricated with a sufficient  
amount of high grade lubricant for the life of the unit under  
normal operating conditions. Therefore, no further lubrication  
is required.  
BRUSH  
CAP  
Fig. 1ꢀ  
16  
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MAINTENANCE  
Install new timing belt over large pulley and one of the  
TIMING BELT REPLACEMENT  
See Figure 13 .  
small pulleys first.  
Press the belt onto the other small pulley, turning the  
Unplug the sander.  
large pulley as you press the belt on.  
Remove dust bag.  
Reinstall belt cover and screw.  
Tighten screw securely.  
Remove sanding belt from sander. Follow instructions on  
page 1ꢀ to remove sanding belt.  
Reinstall the sanding belt.  
NOTE: Removing sanding belt will simplify the process  
of installing a new timing belt.  
Remove belt cover screw and belt cover.  
WARNING:  
Never attempt to operate the belt sander without  
the belt cover in place.  
Force old timing belt from one of the small pulleys with  
a screwdriver and remove it while turning the large  
pulley. If it is worn out, simply cut the old timing belt and  
remove.  
SMALL  
PULLEY  
TIMING  
BELT  
BELT  
COVER  
SCREW  
LARGE  
PULLEY  
SANDER SHOWN WITH DUST BAG AND  
SANDING BELT REMOVED  
Fig. 13  
17  
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NOTES  
18  
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WARRANTY  
RIDGID® HAND HELD AND STATIONARY POWER TOOL  
3 YEAR LIMITED SERVICE WARRANTY  
Proof of purchase must be presented when requesting  
warranty service.  
WHAT IS NOT COVERED  
This warranty applies only to the original purchaser at retail  
and may not be transferred. This warranty only covers  
defects arising under normal usage and does not cover  
any malfunction, failure or defect resulting from misuse,  
abuse, neglect, alteration, modification or repair by other  
than an authorized service center for RIDGID® branded hand  
held and stationary power tools. Consumable accessories  
provided with the tool such as, but not limited to, blades,  
bits and sand paper are not covered.  
Limited to RIDGID® hand held and stationary power tools  
purchased ꢀ/1/04 and after. This product is manufactured  
by One World Technologies, Inc. The trademark is licensed  
from RIDGID, Inc. All warranty communications should be  
directed to One World Technologies, Inc., attn: RIDGID Hand  
Held and Stationary Power Tool Technical Service at (toll  
free) 1-866-539-1710.  
90-DAY SATISFACTION GUARANTEE POLICY  
During the first 90 days after the date of purchase, if you are  
dissatisfied with the performance of this RIDGID® Hand Held  
and Stationary Power Tool for any reason you may return  
the tool to the dealer from which it was purchased for a full  
refund or exchange. To receive a replacement tool you must  
present proof of purchase and return all original equipment  
packaged with the original product. The replacement tool  
will be covered by the limited warranty for the balance of  
the 3 YEAR service warranty period.  
RIDGID, INC. AND ONE WORLD TECHNOLOGIES, INC.  
MAkE NO WARRANTIES, REPRESENTATIONS OR  
PROMISES AS TO THE QUALITY OR PERFORMANCE OF  
ITS POWER TOOLS OTHER THAN THOSE SPECIFICALLY  
STATED IN THIS WARRANTY.  
ADDITIONAL LIMITATIONS  
To the extent permitted by applicable law, all implied  
warranties, including warranties of MERCHANTABILITY or  
FITNESSFORAPARTICULARPURPOSE,aredisclaimed.Any  
implied warranties, including warranties of merchantability or  
fitness for a particular purpose, that cannot be disclaimed  
under state law are limited to three years from the date  
of purchase. One World Technologies, Inc. and RIDGID,  
Inc. are not responsible for direct, indirect, incidental or  
consequential damages. Some states do not allow limitations  
on how long an implied warranty lasts and/or do not allow  
the exclusion or limitation of incidental or consequential  
damages, so the above limitations may not apply to you.  
This warranty gives you specific legal rights, and you may  
also have other rights which vary from state to state.  
WHAT IS COVERED UNDER THE 3 YEAR  
LIMITED SERVICE WARRANTY  
This warranty on RIDGID® Hand Held and Stationary Power  
Tools covers all defects in workmanship or materials and  
normal wear items such as brushes, chucks, motors,  
switches, cords, gears and even cordless batteries in this  
RIDGID® tool for three years following the purchase date of  
the tool. Warranties for other RIDGID® products may vary.  
HOW TO OBTAIN SERVICE  
To obtain service for this RIDGID® tool you must return it;  
freight prepaid, or take it in to an authorized service center  
for RIDGID® branded hand held and stationary power  
tools. You may obtain the location of the authorized service  
center nearest you by calling (toll free) 1-866-539-1710 or  
by logging on to the RIDGID® website at www.ridgid.com.  
When requesting warranty service, you must present the  
original dated sales receipt. The authorized service center will  
repair any faulty workmanship, and either repair or replace  
any part covered under the warranty, at our option, at no  
charge to you.  
One World Technologies, Inc.  
P.O. Box 35, Hwy. 8  
Pickens, SC ꢀ9671  
19  
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OPERATOR’S MANUAL  
3 in. x 18 in. BELT SANDER  
VARIABLE SPEED  
DOUBLE INSULATED  
R2740  
Customer Service Information:  
For parts or service, contact your nearest RIDGID authorized service center. Be  
sure to provide all relevant information when you call or visit. For the location of  
the authorized service center nearest you, please call 1-866-539-1710 or visit us  
The model number of this tool is found on a plate attached to the motor housing.  
Please record the serial number in the space provided below. When ordering repair  
parts, always give the following information:  
Rꢀ740  
Model No.  
Serial No.  
987000-1ꢀ0  
7-ꢀ6-07 (REV:00)  
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