Central Machinery 40668 Set Up And Operating Instructions Manual

8” Buffer

40668

SET UP AND OPERATING INSTRUCTIONS

Distributed exclusively by Harbor Freight Tools®.

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our website at: http://www.harborfreight.com

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight

Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual

product may differ slightly from the product described herein. Tools required for assembly and service may not

be included.

For technical questions or replacement parts, please call 1-800-444-3353.

(Bufng Wheels Not Included)

SPECIFICATIONS MODEL # 40668 BUFFER

Motor: 115V, 8.2 Amps, 60 HZ,

Single Phase, 3/4 HP, 3450 RPM

Extended Shaft Diameter: 3/4”

Spindle Thread: 3/4” x 12 TPI

Spindle Length: 2-5/16”

Mounting Flange: 3-3/8” diameter

Base Size: 8” x 5-3/4”

FEATURES OF THIS BUFFER

1. Double-endedspindleaccommodatesbothPolishingandBufngwheels.

2. Powerful3/4HPmotordeliverseffectivepolishingandbufngat3450rpm.

3. HeavyCastIronconstructionprovidesasturdybaseforpolishingworkpieces.

4. Rubberfeetreducevibration.

5. Ballbearingconstructionprovidessmooth,reliableperformance.

6. Pull-onPush-offsafetyswitchiseasytousewhilehandlingworkpieces.

7. Nomaintenancerequired,otherthanperiodicreplacementofwheels.

SAVE THIS MANUAL

Youwillneedthismanualforthesafetywarningsandcautions,assemblyinstructions,operating

procedures,maintenanceprocedures,troubleshooting,partslist,anddiagram.Keepyourinvoice

withthismanual.Writetheinvoicenumberontheinsideofthefrontcover.Keepboththismanual

andyourinvoiceinasafe,dryplaceforfuturereference.

Page 2 SKU # 40668

NOTICE

The Warnings, Cautions, and Instructions discussed in this instruction manual cannot

cover all possible conditions and situations that may occur. It must be understood by

the operator that common sense and caution are factors which cannot be built into this

product, but must be supplied by the operator.

Rev03/02

SAFETY WARNING & CAUTIONS

READ ALL INSTRUCTIONS BEFORE USING THIS TOOL!

1.KEEPWORKAREACLEAN.Clutteredareasinviteinjuries.

2.OBSERVEWORKAREACONDITIONS.Donotusetoolsindamp,wet,orpoorlylitlocations.

Don’texposetorain.Keepworkareawelllit.Donotuseelectricallypoweredequipmentinthe

presenceofammablegasesorliquids.

3.KEEPCHILDRENAWAY.Childrenmustneverbeallowedintheworkarea.Donotletthem

handle machines, tools, or equipment.

4.STOREIDLEEQUIPMENT.Whennotinuse,toolsmustbelockedupinadrylocationtoinhibit

rust.Alwayslockuptoolsandkeepoutofreachofchildren.

5.DONOTFORCETHETOOL.Itwilldothejobbetterandmoresafelyattherateforwhichitwas

intended. Do not use inappropriate attachments in an attempt to exceed the tool’s capacities.

6.USETHERIGHTTOOLFORTHEJOB.Donotuseatoolforapurposeforwhichitwasnot

intended.

7. DRESSPROPERLYDonotwearlooseclothingorjewelry,astheycanbecaughtinmovingparts.

Non-skidfootwearisrecommended.Wearrestrictivehaircoveringtocontainlonghair.Alwayswear

appropriateworkclothing.

8. USE EYE, EAR AND BREATHING PROTECTION.AlwayswearANSIapprovedimpactsafety

gogglesifyouareproducingmetallingsorwoodchips.WearanANSIapproveddustmaskor

respiratorwhenworkingaroundmetal,wood,andchemicaldustsandmists.UseANSIapprovedear

protectionwhenworkinginaloudornoisyenvironment.

9.DONOTABUSETHEPOWERCORD.Protectthepowercordfromdamage,eitherfrom

impacts,pullingorcorrosivematerials.Donotyankmachine’scordtodisconnectitfromthe

receptacle.

10.DONOTOVERREACH.Keepproperfootingandbalanceatalltimes.Donotreachoveror

across running machines.

11.MAINTAINTOOLSWITHCARE.Keeptoolssharpandcleanforbetterandsaferperformance.

Followinstructionsforlubricatingandchangingaccessories.Inspectpowercordperiodicallyand,

ifdamaged,haveitrepairedbyanauthorizedtechnician.Inspectallhydraulicsealsforleaksprior

touse.Controlhandleandpowerswitchmustbekeptclean,dry,andfreefromoilandgreaseatall

times.

Page 3 SKU # 40668

WARNING: When using shop equipment, basic safety precautions should

always be followed to reduce the risk of personal injury and hazards.

12.REMOVEADJUSTINGKEYSANDWRENCHES.Besurethatkeysandadjustingwrenches

areremovedfromthetoolormachineworksurfacebeforeoperation.

13.AVOIDUNINTENTIONALSTARTING.Besurethatyouarepreparedtobeginworkbefore

turningthestartswitchon.

14.STAYALERT.Watchwhatyouaredoing.Donotoperatethismachinewhenyouaretired.

15. DONOTOPERATETHISMACHINEWHILEUNDERTHEINFLUENCEOFALCOHOL,

DRUGS,ORPRESCRIPTIONMEDICINES.

16.CHECKFORDAMAGEDPARTS.Beforeusinganytool,anypartthatappearsdamagedshould

becarefullycheckedtodeterminethatitwilloperateproperlyandperformitsintendedfunction.

Checkforalignmentandbindingofmovingparts,anybrokenpartsormountingxtures,andany

otherconditionthatmayaffectproperoperation.Anypartthatisdamagedshouldbeproperly

repairedorreplacedbyaqualiedtechnician.Donotusethetoolifanyswitchdoesnotturnonand

offproperly.

17.REPLACEMENTPARTSANDACCESSORIES.Whenservicing,useonlyidentical

replacementparts.Useofanyotherpartswillvoidthewarranty.Onlyusepartsandaccessories

intendedforusewiththistool.ReplacementpartsareavailablefromHarborFreightTools.

SPECIAL WARNINGS WHEN USING THIS BUFFER

Using this Buffer may create special hazards.

Take particular care to safeguard yourself and those around you.

Electrical Safety. Never operate any tool if there is an electrical hazard.Neveroperatean

electricaltoolinwetconditions.Neveroperateatoolwithanimproperelectricalcordorextension

cord.Neveroperateanelectricaltoolunlessyouarepluggedintoaproperlygroundedoutlet,which

supplies110-120Volts.Werecommendthatyouuseacircuitwhichisprotectedbya30Amp

circuitbreaker.

Ejected Material. Use safe practices to avoid injury from ejected material.BecausetheBufng

andPolishingwheelsturnathighspeed,thereisadangerofbeinginjuredbymaterialsthatmay

beejectedfromthewheelsathighspeed.AlwayswearANSI-certiedeyeprotection.Neverinsert

anyitemintothewheelsifitisnotadequatelyheld.Alwaysstandtoonesideoftheplaneinwhich

thewheelsarespinning,toavoidbeinghitifanitemisejected.Neverallowbystanderstobeinthe

proximityoftheBufferwhileinoperation.

Entanglement. Use extreme caution to prevent loose materials from being caught in the wheels.

Neveroperatethisbufferwithlooseclothing,longhair,jewelry,orotheritemswhichmaybecome

caughtinthespinningwheels.Incaseofentanglement,presstheOFFswitchimmediately.

NOTICE: No list of warnings can be all inclusive. The operator must supply common

sense, and operate this tool in a safe manner.

Page 4 SKU # 40668

Page 5 SKU # 40668

ASSEMBLY AND OPERATION

To prepare for use, you must mount the Buffer securely on a bench top,

 installbufngwheels,androutethepowersupply.

Mounting the Buffer

1. Placethebufferonthebenchtopwhereyouplantouseit.Thebenchmustbesturdy,and

 preferablyabletoresistvibrations.

2. Besurethe4rubberfeetareonalevelsurface,andthatall4feetarermlycontactingthe

 benchtop.Ifnot,selectanothersightwhichislevel.

3. Youmayusethisbufferwithoutpermanentlymountingit.However,permanentlymountingit

 makesamoresecureinstallation.

4. Topermanentlyinstall,positionthebufferwhereyouwantit;thenmarkthebenchtop

through the holes on the left and right sides of the base. Set the buffer aside, and drill holes

 throughthebenchtopateachmark.Replacethebuffer,andinsertsuitableboltsthroughthe

 bufferbase,andthroughthebenchtop.Secureunderneathusingwashersandnuts.

 Tightenrmly.

InstalltheBufngWheels.

Note: Generally buffers are set up with one wheel for “Rouge”, an abrasive polishing

compound, and one wheel for “Polish” a non-abrasive compound. Since Rouge can

contaminate the Polishing wheel, never allow the abrasive compound to come in contact

with the Polishing wheel.

1. WhenfacingtheBuffer,thespindlenutontherightsideusesarighthandthread.TheNuton

the left side uses a left hand thread. Do not mix these up.

2. RemovetheSpindlenut.ThenremovetheOuterFlange.

3. SlidetheBufngWheel(NotIncluded)ontotheSpindle.

4. ReplacetheOuterFlange.ReplacetheNut,andtightenrmly.

5. Repeat this process for the other side.

 NOTE:YoumaypurchasesuitableBufngWheelsandpolishingcompoundfrom

Harbor Freight Tools.

Route the Electrical Cord.

 WARNING:Onlyplugthepowercordintoagrounded(3-prong)outletwhichdelivers

110-120Volts.Werecommendthatyouuseacircuitwhichisprotectedbya30-amp 

breaker switch.

1. Chooseasuitableoutlet.

2. Determinearouteforthepowercordwhichwillkeepitawayfromothertools,moisture,

 dangerofbeingcutordamagedbyotherequipment,andawayfrompathways.

3. MakesurethePowerSwitchonthefrontoftheBufferisOFF(pushedin)beforepluggingin

 thePowerCord.

Safe Operation

1. NeverpullthePowerSwitchoutintotheONpositionuntilyouarepreparedtodoso.

2. AlwayswearANSI-approvedeyeprotectionwhenusingthisbuffer.

3. Holdtheworkpieceagainstthebufngwheelslightlybelowthehorizontalmid-pointofthe

 wheel,andataslightdownwardangle.Thiswillreducethelikelihoodofthepiecebeing

 ejectedoutward,shoulditslipfromyourhandsortheholder.

MAINTENANCE

This tool requires very little maintenance. However, to keep it in best condition:

1. CleanyourBufferperiodically.

2. Keeptheventilationholesfreeofdebris.

3. Whennotinuse,keepyourBuffercoveredtopreventmoisturedamage,andcontamination.

Page 6 SKU # 40668

GROUNDING / VOLTAGE WARNING

Commonhouseholdcurrentis110-120volts.Aslongastheoutletusedwiththistoolisratedfrom

110-120Vtherewillbenocomplicationsusingitwithhouseholdreceptacles.Plugthetoolintoa

110-120Vproperlygroundedoutlet.Werecommendthatyouuseacircuitwhichisprotectedbya

15-ampere,dualelementtimedelayorcircuitbreaker.

NEVERtrytopluga110-120Vtoolintoa220-240Vcircuitorseriouscomplicationsandpossible

injurytotheoperatormayoccur.Theplugshavedifferentshapestopreventthis.

Thistoolhasathree-prongplug.Thethird(round)prongistheground.Cuttingoffthegroundwill

resultinasafetyhazardandvoidthewarranty.

Iftheoutletyouareplanningtouseisthetwo-prongtype,donotremoveoralterthegrounding

pronginanymanner.Useanadapterandalwaysconnectthegroundinglugtoaknowngrounding

source.Itisrecommendedthatyouhaveaqualiedelectricianreplacethetwo-prongoutletwitha

properlygroundedthree-prongoutlet.

EXTENSION CORDS

Yourtoolhasathree-prongplug,thereforeyoumustuseathree-prongextensioncord.Onlyuse

roundedjacketextensioncordslistedbytheUnderwritersLaboratories(UL).Improperuseof

extensioncordsmaycauseinefcientoperationofyourtoolwhichcanresultinoverheating.Be

sureyourextensioncordisratedtoallowsufcientcurrentowtothemotor.

Ifyouareusingthetooloutdoors,useanextensioncordratedforoutdooruse(signiedby“WA”on

thejacket).

Theextensioncordmusthaveaminimumwiresizedependingontheamperageofthetoolandthe

lengthoftheextensioncord.ThissizeisdeterminedbyitsAWG(AmericanWireGauge)rating.The

smallerthegauge,thegreaterthecable’scapacity.Theamountofcordsuseddoesnotmatter:Total

lengthdeterminestheminimumAWGrating.EverycordmustmeettheAWGrating.Usethechart

belowtodeterminewhatAWGratingisrequiredforyoursituation.Cordlengthisratedinfeet.Harbor

Freight Tools can supply UL listed and outdoor rated cords in multiple AWG ratings if needed.

AWG RATING CHART

CORD LENGTH 25’ 50’ 75’ 100’ 125’ 150’ 175’ 200’

  AMPS  AWG AWG AWG AWG AWG AWG AWG AWG

0-10.0 18 18 16 16 14 14 12 12

10.1-13.0 16 16 14 14 14 12 12 12

13.1-15 14 14 12 12 12 12 12 —-

Do not modify your plug in any way. If you have any doubt, call a qualied electrician.

MODEL #40668 BUFFER

Page 7 SKU # 40668

MODEL #40668 BUFFER PARTS LIST

Part # Description

1  Screw  

2  EndBell(left)

3 Bearing

4 Stator

5 Motor Housing

6 Rotor

12  EndBell(right)

13 Terminals

14  PowerCord

15 Strain Relief

Part # Description

16  Screw

17 Plate

18 Base

19  PulOnSwitch

20  Screw

21 Base

22 Rubber Pad

23  Screw

24  Capacitor

25  CapacitorCover

PLEASEREADTHEFOLLOWINGCAREFULLY

THEMANUFACTURERAND/ORDISTRIBUTORHASPROVIDEDTHEPARTSDIAGRAMINTHISMANUALASAREFER-

ENCETOOLONLY:NETHERTHEMANUFACTURERNORDISTRIBUTORMAKESANYREPRESENTATIONORWAR-

RANTYOFANYKINDTOTHEBUYERTHATHEORSHEISQUALIFIEDTOMAKEANYREPAIRSTOTHEPRODUCTOR

THATHEORSHEISQUALIFIEDTOREPLACEANYPARTSOFTHEPRODUCT:INFACTTHEMANUFACTURERAND/

ORDISTRIBUTOREXPRESSLYSTATESTHATALLREPAIRSANDPARTSREPLACEMENTSSHOULDBEUNDERTAKEN

BYCERTIFIEDANDLICENSEDTECHNICIANSANDNOTBYTHEBUYER.THEBUYERASSUMESALLRISKANDLI-

ABILITYARISINGOUTOFHISORHERREPAIRSTOTHEORIGINALPRODUCTORREPLACEMENTPARTSTHERETO,

ORARISINGOUTOFHISORHERINSTALLATIONOFREPLACEMENTPARTSTHERETO.

REV 08e

Central Machinery 40668 Set Up And Operating Instructions Manual

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