RIDGID R2740 Operation, Applications, Selecting Sanding Belts, Setting the Belt Sander Speed

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OPERATION

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.

APPLICATIONS

You may use this product for the purposes listed below:

Sanding wood, metals, and plastics

Smoothing rough boards, chamfering, rounding edges

Removing rust, paint, varnishes, and stains

WARNING:

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.

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.

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.

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.

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.

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.

SETTING THE BELT SANDER SPEED

Refer to the chart below for belt sander speed selections.

MATERIAL

 

 

SPEED

 

 

BELT GRIT

 

 

A

B

C

D

E

F

40

60

80

100

150

240

 

UNDRESSED

 

 

 

 

 

 

 

 

LUMBER

 

 

 

 

 

 

 

 

SOFTWOOD

 

 

 

 

 

 

 

 

 

CHIPBOARD

 

 

 

 

 

 

 

 

LUMBER

 

 

 

 

 

 

 

 

 

RUST REMOVAL

 

 

 

 

 

 

 

 

PAINTED SURFACE

 

 

 

 

 

 

 

 

NON-FERROUS

 

 

 

 

 

 

 

 

 

METAL

 

 

 

 

 

 

 

 

 

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Contents OPERAToR’S Manual Table of Contents IntroductionElectrical Safety General Safety RulesWork Area Safety Personal SafetySpecific Safety Rules ServiceSymbols Symbol Name DESIGNATION/EXPLANATIONService Symbol Signal MeaningDouble Insulation Cord Length Wire Size A.W.GElectrical Electrical ConnectionProduct Specifications FeaturesLighted plug Assembly Applications Setting the Belt Sander SpeedOperation Selecting Sanding BeltsSwitch Proper Hand PlacementSoft sTaRt feature Turning ON/OFF the SanderTo INSTALL/CHANGE Sanding Belt Lift Belt tension release lever To remove sanding belt ArrowTo lock-on the sander Locking on the SanderOperating the Sander Excessive pressure will result in the followingOpening To install/remove dust bagEmptying the Dust BAg To empty the dust bagTurn Tracking screw to Adjust Sanding Belt Manually adjusting Sanding Belt TrackingTo manually adjust belt position PlatenGeneral Maintenance MaintenanceBrush Replacement LubricationTiming Belt Replacement Sander shown with dust bag Sanding belt removedPage What is Covered Under the 3 Year Limited Service Warranty WarrantyDAY Satisfaction Guarantee Policy HOW to Obtain Service What is not CoveredCustomer Service Information Model No R2740 Serial No