Clarke EZ-8 User manual

Form No 78599C 2/07 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. Ifyouroperator(s)cannotreadthismanual,haveitexplainedfullybeforeattempting
to operate this machine.
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
EZ-8
Sander
Operator's
Manual

Page 2 Clarke®American Sanders EZ - 8 Sander Operator's Manual
OperatorSafetyInstructions .........................................................3
IntroductionandMachineSpecifications.......................................5
HowtoTransporttheMachine ......................................................6
MachineSet-Up ...........................................................................7
HowtoOperatetheMachine ........................................................9
SandingCutsandSandpaper ....................................................10
SanderAdjustmentProcedures..................................................11
RoutineMaintenance..................................................................12
Troubleshooting .........................................................................13
Section II Parts and Service Manual
AssemblyDrawing#1 ................................................................16
Assembly Parts List #1 ..............................................................17
AssemblyDrawing#2 ................................................................18
Assembly Parts List #2 ..............................................................19
Wiring Diagram..........................................................................20
Contents of this Book

Clarke®American Sanders EZ - 8 Sander Operator's Manual Page 3
DANGERmeans: Severe bodily injury or death can occur to youor other personnel if the DAN-
GER statementsfound onthis machineor inthis Operator'sManual are
ignoredorarenotadheredto. ReadandobserveallDANGERstatements
foundinthisOperator'sManualandonyourmachine.
WARNINGmeans: Injury can occur to you or to other personnel if the WARNING statements
foundonyourmachineorin this Operator's Manual areignoredorarenot
adheredto. Readand observe all WARNING statementsfoundin this
Operator'sManualandonyourmachine.
CAUTIONmeans: Damage can occur to the machine or to other property if the CAUTION state-
mentsfoundonyour machine or inthisOperator'sManual are ignored orare
notadheredto. Read and observeall CAUTION statements found 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 all safety statements found in thismanual 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
cancauseflammablematerialandvaporstoburn. Readthemanufacturer'slabelonall
chemicals used to determine combustibility. Keep the work area well ventilated.
• Spontaneouscombustion or an explosion canoccur whenworking with sanding 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
locatedoutsideof any building(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 hammer and punch to countersink all nails beforesanding floors.
OPERATOR SAFETY INSTRUCTIONS

Page 4 Clarke®American Sanders EZ - 8 Sander 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 nameplate.
• 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: Intheeventofabagfire,injurycanoccurtotheoperatoriftheoperatoristiedorstrappedtoequipment.
Use operating belt properly ( follow procedure on page 11).
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: The equipment is heavy. When transporting the equipment, remove the motor. Get help to lift the
equipment and motor.
CAUTION: Serious damage to the floor can occur if the sanding equipment is left running in one spot while
the sanding drum is in contact with the floor. To avoid damage to the floor, feather cut in at a normal
sanding rate. Do not dwell while lowering or raising the contact wheel. Always sand at a constant
rate.

Clarke®American Sanders EZ - 8 Sander Operator's Manual Page 5
Introduction & Machine Specifications
CAUTION: Your equipment may be inappropriate on some installations. Always consult with the
flooring manufacturer on the proper installation, preparation, and finishing of their
product. Determine suitability of your equipment in preparing the product.
Voltage/Frequency 110-120V/ 50Hz 220-240V / 50 Hz 220-240V / 50 Hz
Amperage 12.0 6.0 6.0
Sound Level 84dB(A) 84dB(A) 84 dB(A)
Vibration 7.4m/s27.4m/s2 7.4m/s2
Abrasive Size 203x487mm 203x487mm 203x482mm
sheet sheet sleeve
Abrasive Rate 680m/min 680m/min 720m/min
Drum Rate 1500RPM 1500RPM 1500 RPM
DustControlRate 30.2l/sec 30.2l/sec 30.2l/sec
DrumPressure 11.4kg 11.4kg 11.4kg
LevelingControls Externally Externally Externally
Adjustable Adjustable Adjustablel
OperatingControls Lever Lever Lever
Operated Operated Operated
Motor 1.1KWTEFC 1.1KW TEFC 1.1KW TEFC
Thermally Thermally Thermally
Protected Protected Protected
Power Cable 12m3x2.5mm212m 3x2.5mm2 12m 3x2.5mm2
Abrasion Abrasion Abrasion
Resistant Resistant Resistant
Dimensions(mm)* 546x406x902 546x406x902 546x406x902
Weight * 58kg 58kg 58kg
*ShippingValue
Operating
ControlLever
Control Switch
Control Link
Transport Handle
Dust Pipe
Locking Collar
Handle Latch
Level Adjustment DrumCover

Page 6 Clarke®American Sanders EZ - 8 Sander Operator's Manual
How to Transport the Machine
Transporting the Machine With Limited
Cargo Area:
To transport the machine, follow this procedure:
1. Lower sanding drum with control lever. See
figure 1.
2. Slide collar beyond overlap of control link; remove
pin from notch. See figure 2.
3. Twist and remove handle pigtail from motor cord.
See figure 3.
4. Release handle latches and remove handle from
chassis. See figure 2.
5. Remove dust pipe from chassis.
6. Lift chassis with transport handles and place in
cargo area. See figure 4.
WARNING: Machine is heavy (43.2kg). To
avoid injury or damage grasp
transport handles firmly; use
proper lifting technique.
7. Secure chassis to prevent movement in cargo area.
Place handle and dust pipe in cargo area.
Figure2
Figure3
Figure1
Figure4

Clarke®American Sanders EZ - 8 Sander Operator's Manual Page 7
Machine Set-up
To set up the machine follow this procedure:
1. Familiarize yourself with the machine. Read all
danger,warning,and caution statementsas well
astheOperator's Manual. If operatoris unable
toreadEnglish, have themanualexplained
beforeoperating.
2. Install handle and fasten latches. See figure # 6.
3. Insert control link into notch and slide collar to
pin. Raise sanding drum with control lever. See
figure # 5 & # 6.
4. Install dust tube.
5. Connect the handle pigtail to the motor cord.
Align ground pin, insert and twist. See figure # 7.
6. Toinstallabrasiveonsandingdrumequipped
with paper clamp: loosen screws to paper clamp
with a coin. Do not remove screws or clamp
fromthe sandingdrum. Insert oneedge of
abrasiveunderpaperclamp. Rotatesanding
drumtowrapabrasivearounddrum. Insertother
edgeofabrasiveunderpaperclamp. Center
abrasive and take up any slack in the abrasive.
Tighten screws on paper clamp. Close drum
cover.Seefigure#8.
Toinstallabrasiveonsandingdrumequippedfor
sleeveabrasive:slideabrasiveoverdrum,center
abrasive,andclosedrumcover.
Figure # 5
Figure # 6
Figure # 7
Figure # 8

Page 8 Clarke®American Sanders EZ - 8 Sander Operator's Manual
MACHINESET-UP
7. Thissandingmachineisdesignedtobe operated
with a remote vacuum dust collection system or
with the included dust bag. Follow the procedures
below:
Preparing Remote Vacuum Dust Collection Systems
Topreparethemachineforremotevacuumdustcollection
systems that have a 2" hose end, follow this procedure:
1. Install 2" hose end (figure 9, A) directly over the
exhaust tube (figure 9, B).
2. Theexhausttubecanberotatedforoptimumconve-
nience.
Topreparethemachineforremotevacuumdustcollection
systems that have a 1 ½" hose end, follow this procedure:
1. Install the 2" x 1½" hose end adaptor (Part No.
30563A)(figure9,C)overtheexhausttube(figure9,
B).
2. Insert 1 ½" hose end (figure 9, D) into the adaptor
(figure9,C).
NOTE: Start the remote vacuum collection system
beforeoperation.
Preparing to use the included dust bag
Toprepare the machinefor usewith the includeddust bag,
followthisprocedure:
1. Install the dust bag by pressing the end onto the
exhausttube until the ring locks into the groove (figure
10). This is best done by pressing on the back of the
bagopeningwith the palm ofyourhand.
2. Theexhausttubecanberotatedforoptimumconve-
nience.
3. Toremove the dust bag from 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 out byinverting the bag.
NOTE: For best results, empty frequently. Follow all
warnings posted in this manual and on the dust bag.
Install the dust bag by
pressing the end onto the
exhaust tube until the ring
locks into the groove.
1.5" Hose from
vacuum system
(not included)
BC
Exhaust Tube (30563A) 2" Tube x 1.5" hose adaptor
Figure9
Figure10
A
2" Hose from
vacuum system
(not included)
D

Clarke®American Sanders EZ - 8 Sander Operator's Manual Page 9
How to Operate the Machine
Tooperatethemachinefollowthisprocedure:
1. Set any exposed nails with a hammer and punch
toavoidencounterwith sanding drum. Connect
themachinetoanappropriategroundedand
fused circuit (power supply). Press the selector
switch to the start (S) position. Once started,
allow switch to return to run (R) position.
CAUTION: To prevent damage to the surface,
make sure the machine is always
moving when the sanding drum is
in contact with the floor.
2. Work right to left. For each forward pass, move
the machine 4" over the pass you have just
finished. Retraceyourreversepathwithout
overlapping. Seefigure#11
3. Feather-cutinby easing thesanding drum down
ontothe surface with the controllever while the
sander is in motion.
4. When sanding drum is fully engaged with the
surface,releasecontrolleverandadjustyour
paceforadequatestockremoval. Keepsander
in motion while the sanding drum is engaged with
the surface or dwell marks will occur.
5. Move the machine in the direction of the grain in
thewoodwheneverpossible. Sandthesurface
at a constant pace.
6. Graduallyfeather-cutoutattheterminationpoint
(the end of your pass) by easing the sanding
drum up with the control lever. Stagger the
terminationpointsforabetterblendwhen
edging. See figure # 11.
7. Whenreplacingabrasive,emptyingcontentsof
dust bag, or when sanding operation is com -
pleted, press selector switch to off (O) position.
Disconnectthe machine from the power supply.
8. Empty dust bag whenever it is 1/3 full. Never
leavea dust bag unattended with sanding dustin
it. Sanding dust can spontaneously ignite and
cause a fire or explosion. Empty dust into a
metal container clear of any combustible mate-
rial.
Figure11
1
3
2
4

Page 10 Clarke®American Sanders EZ - 8 Sander Operator's Manual
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945398/25 945935/10 945420/10
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Sanding Cuts and Sandpaper
12 grit For removing gross imperfections and restore
16 grit evenness to old flooring. To remove build-up of
20 grit paints and varnishes
24 grit
36 grit For the first sanding of new flooring (maple, oak).
40 grit For removing minor imperfections and finishes
from old flooring.
50 grit For first sanding of new flooring (cedar, pine, fir)
For clean-up of 16 grit.
60 grit For clean-up from initial cut 36 grit.
80 grit For final sanding of certain hardwoods. For
clean-up of initial cuts (50 grit).
100 grit For final sanding of certain hardwoods and
conifers where a smooth surface is desired.
Grain Use
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 surface remains rough after a finishing cut, it may benecessary to use an even finer grain of abrasive (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.
8 x 18 19 /32 Sheet 8x 19 Sleeve 8 x 18 55 /64 Sleeve
Part No./ Cnt. Cloth Back Paper Back
Part No./Cnt. Part No./Cnt.