Clarke 07127A User manual

Form No. 70896A 11/04 Printed in the U.S.A.
READ THIS BOOK
This book has important information for the use and safe operation of this machine. Failure to read
this book prior to operating or attempting any service or maintenance procedure to your Clarke
AmericanSanders machinecouldresultininjurytoyouortootherpersonnel;damagetothemachine
or to other property could occur as well. You must have training in the operation of this machine
beforeusingit. IfcannotreadEnglish,havethismanualexplainedfullybeforeattemptingtooperate
this machine.
Si Ud. no pueden leer el Inglés, se hagan explicar este manual completamente antes de tratar el
manejo o servicio de esta máquina.
All directions given in this book are as seen from the operator’s position at the rear of the machine.
For new books write to: Clarke, 2100 Highway 265, Springdale, Arkansas 72764
Operator's
Manual
American
B-2+ DC
7" Edger

Page 2 Clarke American Sanders American B-2 Operator's Manual
OperatorSafetyInstructions .........................................................3
IntroductionandMachineSpecifications.......................................5
MachineSet-Up ...........................................................................6
HowtoPreparetheMachineforOperation...................................7
SandingCuts andSandpaper .................................................... 8
HowtoOperatetheMachine ........................................................9
RoutineMaintenance....................................................................9
TheDustControlSystem ......................................................10
Howto Adjustthe Angle ofthe SandpaperDisc to theFloor ..10
HowtoChangeAdjustmentofMachine.................................10
HowtoReplacetheLightBulb ..............................................10
HowtoCleanVentilationPlug ...............................................10
Lubrication............................................................................11
HowtochangetheLubricantintheGearbox .........................11
HowtoChecktheCarbonBrushes .......................................12
AssemblyDrawing#1 ................................................................14
Assembly Parts List #1 ..............................................................15
AssemblyDrawing#2 ................................................................16
Assembly Parts List #2 ..............................................................17
Wiring Diagram..........................................................................18
Contents of this Book

Clarke American Sanders American B-2 Operator's Manual Page 3
DANGERmeans: Severe bodily injury or death can occur to you orother personnel if the DAN-
GER statementsfound onthis machineor inthis Operator'sManual are
ignoredorarenotadheredto. ReadandobserveallDANGERstatements
foundinthisOperator's Manualandonyourmachine.
WARNINGmeans: Injury can occur to you or to other personnel if the WARNING statements
foundonyour machineorinthis Operator'sManualareignored orarenot
adheredto. Read andobserveall WARNING statements foundinthis
Operator'sManualandonyourmachine.
CAUTIONmeans: Damage can occur to the machine or to other property if the CAUTION state-
mentsfoundon yourmachineor inthisOperator'sManual areignoredor are
notadhered to. Readandobserve allCAUTION statementsfound inthis
Operator'sManualandonyourmachine.
DANGER: FailuretoreadtheOperator'sManualbeforeoperatingorservicingthissandingequipment
could result in injury to the operator or to bystanders and could cause damage to the
equipment. Readand observe allsafety statementsfound inthis manual and on the
sanding equipment. Make sure all labels, decals, warnings, cautions and instructions are
fastened to the equipment. Replace any that are damaged or missing. You must have
training in the operation of this equipment before using it. If the operator is unable to
read this manual, have it explained fully before they attempt to use this equip-
ment.
DANGER: Sanding/finishingwoodfloorscancreateanenvironmentthatcanbeexplosive. The
followingsafetyproceduresmustbeadheredto:
• Cigarette lighters, pilot lights and any other source of ignition can create an explosion
when active during a sanding session. All sources of ignition should be extinguished or
removedentirelyifpossiblefromtheworkarea.
• Workareasthatarepoorlyventilatedcancreateanexplosiveenvironmentwhencertain
combustible materials are in the atmosphere, i.e., solvents, thinners, alcohol, fuels,
certain finishes, wood dust and other combustible materials. Floor sanding equipment
cancauseflammable material andvaporstoburn. Read the manufacturer'slabelonall
chemicals used to determine combustibility. Keep the work area well ventilated.
• Spontaneouscombustion oran explosioncan occurwhenworking withsanding dust.
The sanding dust can self-ignite and cause injury or damage. Sanding dust should be
disposed of properly. Always empty the sanding dust into a metal container that is
locatedoutsideofanybuilding(s).
• Remove the contents of the dust bag when the bag is 1/3 full. Remove the contents of
the dust bag each time you finish using the equipment. Never leave a dust bag unat-
tended with sanding dust in it.
• Do not empty the contents of the dust bag into a fire.
• Hitting a nail while sanding can cause sparks and create an explosion or fire. Always
usea hammerand punch to countersink allnails beforesanding floors.
OPERATOR SAFETY INSTRUCTIONS
WARNING AVERTISSEMENT ADVERTENCIA

Page 4 Clarke American Sanders American B-2 Operator's Manual
DANGER: Operating partially assembled sanding equipment could result in injury to the operator or
bystander and could cause damage to the equipment or to other property.
• Do not operate this equipment unless it it fully assembled and all guards, doors and
covers are secured.
• Keep all fasteners tight.
• Keep all adjustments within manufacturers specifications.
DANGER: Moving parts on this sanding equipment can cause injury to the operator or bystanders.
• Keep hands, feet and loose clothing away from all moving parts.
• Do not change or adjust the abrasive while the sanding equipment is running.
• Do not service the sanding equipment while it is running.
DANGER: This sanding equipment requires a supply of electricity. Improper use could result in electrical
shock or fire.
• Connect only to an electrical source matching what is shown on the equipment name-
plate.
• Do not use this sanding equipment on an ungrounded electrical circuit. Consult an
electrician if you suspect the circuit is not properly grounded.
• Do not use this sanding equipment with a damaged electrical cord. Inspect before each
use.
• Avoid striking the elelctrical cord with the abrasive. Always lift the electrical cord over
the sanding equipment.
• Do not use the electrical cord to move the sanding equipment.
• Disconnect the electrical source before servicing this equipment.
WARNING: Injury to the operator or bystander can occur if protective gear is not worn while sanding.
Always use eye, ear, and respiratory protection while performing any sanding operation.
WARNING: Bodily injury could occur if power is applied to the equipment with the power switch already
in the "ON" position. Always check to assure that the power switch is in the "OFF" position
before connecting power supply.
CAUTION: Maintenance and repairs performed by unauthorized personnel could result in damage or
injury. Maintenance and repairs performed by unauthorized personnel will void your warranty.
Servicing of this unit must always be referred to an authorized Clarke American Sanders
distributor.
CAUTION: Use of this equipment to move other objects or to climb on could result in injury or damage.
Do not use this equipment as a step or furniture. Do not ride on this equipment.
CAUTION: Damage could occur to the equipment if not properly kept in a dry building for storage. Store
the equipment in a dry building.
CAUTION: Serious damage to the floor can occur if the sanding equipment is left running in one spot while
the sanding disc is in contact with the floor. To avoid damage to the floor, do not dwell while
lowering or raising the sanding disc. Always sand with a constant motion.

Clarke American Sanders American B-2 Operator's Manual Page 5
Introduction and Machine Specifications
TheAmericanB-2 is specificallydesignedforfinishing floor edges,stairs,andother hard-to-reach surfaces. The
handle location and low center of gravity make the American B-2 easy to operate.
Theexcellent cuttingpower comes froma powerfuluniversaltype motor. Amotor thatdeliversmaximum
performancewithoutslowingdownoroverheating. Itsexclusivetwospeedcontrol whenswitchedtohi-speed
produces 3200 rpm for fast, rough sanding. At low speed, the American B-2 operates at 2800 rpm for fine, finish
sanding. A non marking disc guard protects the rubber pad, permitting the edger to work right up to the base-
boardorwall.
Alsostandardisaconvenientbuilt-inheadlight. Powerfulfanandsandingdischousingdesignprovidesefficient
dust pickup. Plus an easy to remove dust pipe that makes cleaning a quick and simple task.
SPECIFICATIONS
Model 07127A 07128A
Electrical 115V ~, 60 Hz 230V ~, 50 - 60 Hz
Requirements 12.0A, 1.3 kW 6.0A, 1.3 kW
Frame Aluminum Aluminum
Disc Heavydutysteelprecision Heavydutysteelprecision
balanced,7" dia.2800 rpm balanced,7"dia. 2800rpm
lowspeed,3200rpmhigh lowspeed,3200rpmhigh
speed,heat resistant speed, heat resistant
rubberpad. rubberpad
Gears Hardenedsteelalloypinionand Hardenedsteelalloypinionand
manganesebronzedrivegear. manganesebronzedrivegear.
Bearings Sealedballbearings, Sealedballbearings
lifetimelubricated. lifetimelubricated.
Switch Positiveaction,on-offtoggle Positiveaction,on-offtoggle
DustCollector Powerfulvacuumfan,full Powerfulvacuumfan,full
aluminumskirt aluminum skirt
Cord 25' 25'
Height (overall) 13½" 13½"
Diameter 91/8"9
1/8"
Disc Diameter 7" 7"
Weight 32 lbs. 32 lbs.
Shipping Weight 46 lbs. 46 lbs
Warranty 1 year limited 1 year limited
Powerful Universal Motor
High Low Switch
Powerful Vacuum Fan for effecient dust pickup
Non-MarkingRollerGuard
Non-Marking Swivel Type
Casters
Balanced Sanding Disc
for perfectly matched job
Aluminum Alloy Casting
Built-InHeadlight
Comfortable Operating
Handles
Hardened Steel Alloy
Pinon and Drive Gear
On-Off Heavy Duty Switch

Page 6 Clarke American Sanders American B-2 Operator's Manual
MachineSet-up
This sanding machine is designed to be operated with a
remote vacuum dust collection sytem or with the included
dust bag.
Preparing Remote Vacuum Dust Collection Sytems
Topreparethemachineforremotevacuumdustcollection
systems that have a 2" hose end, follow this procedure:
1. Install 2" hose end directly over the exhaust tube.
2. Theexhausttubecanberotatedforoptimumconve-
nience.
Topreparethemachineforremotevacuumdustcollection
systems that have a 1 ½" hose end, follow this procedure:
1. Install the 2" x 1½ house end adaptor (Part No.
30563A)overtheexhausttube.
2. Insert 1 1/2" hose end into the adaptor.
NOTE: Start the remote vacuum collection system
beforeoperation.
Preparing to use the included dust bag
Toprepare themachinefor usewiththe includeddust bag
(PartNo.53544A),followthisprocedure:
1. Press the bag opening over the exhaust tube until the
internalribofthebagopeningengagesintotheannular
groove on the exhaust tube. This is best done by
pressing on the back of the bag opening with the palm
ofyourhand.
2. Theexhausttubecanberotatedforoptimumconve-
nience.
3. Toremove thedust bagfrom theexhaust tube,pry up
the end of the bag opening to partially release the
internalribfromthegroove,thenpull.
4. To empty the dust bag, unzip the disposal flap and
forcecontents outby inverting thebag.
NOTE: For best results, empty frequently. Follow all
warnings posted in this manual and on the dust bag.

Clarke American Sanders American B-2 Operator's Manual Page 7
Figure1
Figure 2
HOWTOPREPARETHEMACHINEFOROPERATION
How to Install the Sandpaper
NOTE: Use a sandpaper disc that has a 7" diameter and
a 7/8hole in the center.
1. Putthe machineupside down.
2. A special wrench is in the bracket behind the
motor. Use the special wrench to remove the
screwandwasher fromthecenterof thesanding
pad. See Figure 1.
3. Put the sanding disc in position on the sanding
pad.
4. Put the special washer and the holding screw in
position in the center of the sanding pad.
5. Put one hand on the sandpaper. Using the special
wrench, turn the screw clockwise with the other
hand. Make sure the screw is tight. See Figure 2.

Page 8 Clarke American Sanders American B-2 Operator's Manual
Sanding Cuts and Sandpaper
InitialCut
The purpose of the initial cut is to remove old finish and gross imperfections on the floor surface. A coarse
abrasive should be used. If the surface is severely damaged by deep scratches, pre-existing dwell marks,
uneven planks, etc., it may be necessary to sand across or diagonally to the grain to restore evenness to the
surface. If these conditions are not present, the initial cut should be done in the direction of the grain.
If glazing, loading, or burning takes place immediately into an initial cut, select a coarser abrasive. If this
should occur during an initial cut, the abrasive has dulled and must be replaced.
Final Cuts
The purpose of a finishing cut is to remove the scratches produced during the initial cut. Use a fine (60 - 80
grit)grainabrasive.
Ifthe surfaceremains roughafter a finishing cut, it may benecessary touse aneven finergrain ofabrasive (80
- 100 grit). Care should be taken in selecting the grit size of the abrasive. A very fine grain will close the
pores on a wood floor making admission of a stain difficult.
If glazing or burning should occur immediately into a finishing cut, increase pace. If it should occur during a
finishing cut, the abrasive has dulled and must be replaced.
12grit Forremovinggrossimperfectionsandrestoreevenness
16grit tooldflooring. Toremovebuild-upofpaintsandvarnishes.
20grit
30grit Forfirstsanding ofnewflooring (maple,oak). For removing
36grit minorimperfectionsandfinishesfromoldflooring.
40grit Forinitial cuton newflooring(oak, walnut). Forremoving
minorimperfectionsandfinishesfromoldflooring.
50grit Forfirstsandingofnewflooring(cedar,pine,fir)
Forclean-upof16grit.
60grit For clean-up from initial cut 36 grit.
80grit Forfinalsandingofcertainhardwoods. Forclean-up
of initial cuts (50 grit).
100grit Forfinalsandingofcertainhardwoodsandconiferswhere
a smooth surface is desired.
120grit For finishing cuton certainconifers.
150grit For finishing cut oncertain coniferswhere asmooth
surfaceisdesired.
Grain Use Standard Grade
Part #/Qty
945300/50
945301/50
945302/50
945305/100
945308/100
945309/100
945310/100

Clarke American Sanders American B-2 Operator's Manual Page 9
HOWTOOPERATETHEMACHINE
DANGER: Failuretoremovetheelectricalplugfrom
theelectrical outletbefore attempting any
serviceormaintenancecouldresultin
electrocutionor severeinjury. Always
unplugthemachinebeforeattemptingany
service. Neverleavemachineunattended
whilepluggedin.
Tooperatethemachinefollowthisprocedure:
1. Move the machine to the location of your work.
2. Connect the extension cord to the short power
cord on the machine. See figure 3.
3. Connect the other end of the extension cord to the
powersupplyoutlet.
4. Put the variable speed switch in the "HI" position
(1). See figure 4. After reaching full speed, put the
switch in the "LO" position if low speed is needed.
NOTE: Thehighspeedoperationisforfastwoodremoval.
For finish custs and custom work, use the low speed
operation.
5. Tilt the machine back so that the sandpaper disc
does not touch the floor See (1) in Figure 5. Hold
both handles. See (2) in Figure 5.
6. Put the On/Off switch in the "ON" position. See (3)
in Figure 5.
7. Keepthe machinemovingas youlowerthe
sandpaperdiscto thefloorsurface.
8. Do not press down on the machine. The weight of
themachinegivesenoughpressure foralltypesof
sanding.
MAINTENANCE
Figure3
Figure4
Figure5
CAUTION: Maintenance and repairs performed
by unauthorized personnel could
result in damage or injury. Mainte-
nance and repairs performed by
unauthorized personnel will void your
warranty. Servicing of these units
must always be referred to an autho-
rized Clarke American Sanders
distributor.
NOTE: Do not store or rest the machine on the sanding
disc assembly. It may cause the disc to become
warped or cause it to be out of balance.
2
1

Page 10 Clarke American Sanders American B-2 Operator's Manual
MAINTENANCE (cont)
TheDustControlSystem
Remove the dust from the bag when the bag is 1/3
full or when the efficiency of the dust control system
decreases.
If the exhaust pipe gets an obstruction, follow this
procedure:
1. Removethefour screwsthathold theexhaustpipe
to the housing. See figure 6.
2. Removetheobstructionfromtheexhaustpipe.
3. Install the exhaust pipe.
How to Adjust the Angle Of The Sandpaper Disc To
The Floor
Theadjustment ofthe machineis correctwhen thefront
part of the sandpaper disc makes contact with the floor.
To change the adjustment of the machine, follow
thisprocedure:
1. Using the special wrench, loosen the lock nut on
each caster. See (1) figure 7.
2. Loosen the jam nut. See (2) figure 7.
3. Raise or lower the casters as needed.
4. Tighten the jam nut on each caster.
5. Tighten the lock nut on each caster.
How To Replace The Light Bulb
Toreplacethelight bulb,followthisprocedure:
1. Remove the two screws that hold the light guard to
the housing. See figure 8.
2. Removethelightguard.
3. Removethe lightbulb fromthe socket.
4. Install a new light bulb.
5. Put the lamp guard in position.
6. Install the two holding screws.
The Ventilation Plug
1. Tocleanthe ventilationopeninginthe centerofthe
plug, remove the plug from the machine. With the
plugremoved, alsoinspect thegrease inthe
gearbox. Seefigure 9.
Figure6
Figure8
Figure9
Figure7
1
2