laguna 37x2 User manual

OWNERS’S MANUAL
37x2
Drum Sander
Shown With Optional Infeed/Outfeed Tables, DRO, Abrasive Storage and Casters

2
Thank you for investing in a 37x2 drum sander by Laguna Tools. This
machine is one of a family of unique machines proudly offered by Laguna
Tools. Every Laguna machine is engineered for years of dependable service.
Please feel free to contact Laguna Tools if you have a question or suggestion.
We appreciate working with you and your choice of a Laguna Tools machine
for your shop.
Regards,
Torben Helshoj
President & Founder Laguna Tools
This manual applies to the 37x2 double head drum sanders. Enter the model
number, serial number and purchase information below for quick reference
when ordering accessories, supplies or parts.
Model: ___________
Serial: ___________
Date of purchase: ___________
Place of purchase: ___________
Laguna Tools 744 Refuge Way, Suite 200
Grand Prairie TX 75050
800-234-1976
www.lagunatools.com
37x2 DUAL DRUM SANDER
STOCK NO. 937003
POWER. 230V, 1Ph, 22.4A, 60Hz
SERIAL NO.
Taiwan TCP

3
C ONTENTS
ABOUT THE SUPERMAX SYSTEM
Safety Rules............................................4
Main Components...................................6
Unpacking...............................................7
SETTING UP YOUR SUPERMAX
Making Electrical Connections...............8
Connecting Dust Collectors....................9
Checking Drum Alignment.....................9
Checking Conveyor Belt.......................10
Checking Table Height Controls...........11
Monthly Maintenance...........................11
Installing Abrasive Wraps.....................12
OPERATING YOUR SUPERMAX
Basic Operating Procedures..................14
SUPERMAX Operating Controls.............14
Setting The Depth of Cut......................15
Setting Front Drum...............................15
Setting Rear Drum…………………….15
Disengaging Drums
............................................................16
Selecting Intellisand™Feed Rates........16
Using The Depth Gauge........................17
Selecting Drum Abrasives ....................18
Tips For Maximum Performance ..........19
T ROUBLESHOOTING
Troubleshooting Guide: Motors ............ 21
Troubleshooting Guide: Machine.......... 22
Troubleshooting Guide: Operations ...... 24
SERVICING
Adjusting Height Controls .................... 26
Adjusting TableSupportCastings ......... 27
AdjustingSandingDrums..................... 28
AdjustingTensionRollers...................... 30
ReplacingConveyorBelts..................... 31
ReplacingV-Belt......................................32
ReplacingElectricalComponents ......... 33
ElectricalDiagram................................. 33
SUPERMAX TECHNICAL DATA
PartsList&Drawing, Stand .................. 34
PartsList& Drawing,Drum Assembly . 37
PartsList&Drawing,ConveyorAssembly
............................................................... 40
S UPER M AX Specifications ......................... 44
S UPER M AX Accessories & Supplies.......... 47
FOR YOUR SAFETY: Read all instructions carefully,
and note the safety cautions withinthis manual.

4
IMPORTANT: KEEP THIS MANUAL HANDY
Please read this manual. It was designed to help youget the most from your Laguna/SUPERMAX drum
sander. Before unpacking or using the machine, familiarizeyourselfwithitscomponents,features, and
basicadjustmentsbyreviewingthefollowing pages. You will find it an invaluable aid in setting up,
operating, and servicing your machine.
CAUTION, SAFETY FIRST
When maintaining and operating this machine, always put safety first. For your own safety, read and
understandthisowner’s manualbeforeoperatingthismachine.Alwaysheedandfollowallnor- mal
safetyprecautions,includingthefollowing:
SAFETY RULES
1. KEEP GUARDS IN PLACE and in working order.
2. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and
adjusting wrenches are removed from tool before turning it on.
3. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
4. DON'T USE IN DANGEROUS ENVIRONMENT. Don't use power tools in damp or wet locations, or
expose them to rain. Keep work area well lighted.
5. KEEP CHILDREN AWAY. All visitors should be kept safe distance from work area.
6. MAKE WORKSHOP KID PROOF with padlocks, master switches, or by removing starter keys.
7. DON'T FORCE TOOL. It will do the job better and safer at the rate for which it was designed.
8. USE RIGHT TOOL. Don't force tool or attachment to do a job for which it was not designed.
9. USE PROPER EXTENSION CORD. 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. An undersized cord will cause a drop in line voltage resulting in loss of power and
overheating. Table A shows the correct size to use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gage. The smaller the gage number, the heavier the cord.
Table A
Ampere Rating
Volts
Total length of cord in feet
120
25
50
100
150
240
50
100
150
300
More Than
Not More Than
Minimum gage for cord
0
6
18
16
16
14
6
10
18
16
14
12
10
12
16
16
14
12
12
16
14
12
Not
Recommended
10. WEAR PROPER APPAREL Do not wear loose clothing, gloves, neckties, rings, bracelets, or other
jewelry which may get caught in moving parts. Nonslip footwear is recommended. Wear protective
hair covering to contain long hair.

5
11. ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting operation is dusty.
Everyday eyeglasses only have impact resistant lenses, they are NOT safety glasses.
12. SECURE WORK. Use clamps or a vise to hold work when practical. It's safer than using your
hand and it frees both hands to operate tool.
13. DON'T OVERREACH. Keep proper footing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
15. DISCONNECT TOOLS before servicing; when changing accessories, such as blades, bits, cutters,
and the like.
16. REDUCE THE RISK OF UNINTENTIONAL STATING. Make sure switch is in off position
before plugging in.
17. USE RECOMMENDED ACCESSORIES. Consult the owner's manual for recommended
accessories. The use of improper accessories may cause risk of injury to persons.
18. NEVER STAND ON TOOL Serious injury could occur if the tool is tipped or if the cutting tool is
unintentionally contacted.
19. CHECK DAMAGED PARTS. Before further use of the too., a guard or other part that is damaged
should be carefully checked to determine that it will operate 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.
20. DIRECTION OF FEED. Feed work into a blade or cutter against the direction of rotation of the blade
or cutter only.
21. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don't leave tool until
it comes to a complete stop.

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Main Components
Fig. 1. Main Components.
Tension Rollers
Height Adjustment
Handle
ON/OFF switch
Conveyor motor &
Intellisand switch
Main motor
(drums)

7
UNPACKING YOUR SUPERMAX
Thesander has been shipped mostly assembled
fromthefactoryinacardboard shroud on a pallet.
Ifanydamagehasoccurredasaresultofshipment,
notifythe transportation company as soon as pos-
sible and ask them to make an immediate inspec-
tion.Askfor adamage or loss report.Also notify
your dealer of any loss or damage during ship-
ment. See WarrantyStatement.
Important: Toavoid problems and potential
damage to the machine, please read through the
unpackinginstructionsbelowbeforeproceedingto
set up the machine in your shop.
1. Unbolt the machine legs from the shipping
pallet.Installthecasters on legs (Fig. 2) with a
washer and nut. Tighten with a 3/4”wrench.
The casters and mounting hardware are
packaged with the machine.
2. Loosenthe hex nutand set screwson the table
support castings (Fig. 3). The set screws on the
table support castings have been tightened at the
factory to eliminate free-play between the table
support casting and the column tube during ship-
ment. There are two table support castings on the
SUPERMAX, one each for the rightand left column
tubes. Important: These set screws are tightened
for shipping and must be loosened and readjusted
before operating either the height adjustment
mechanism or the conveyor drive.
Toproperlyadjustforoperation,looseneachset
screwby first looseningitshexnut withan open-
end wrench and then the set screw with an Allen
wrench.Thenretighten eachsetscrewwith your
fingerssoitonlylightlytouchesthecolumntube.
Hold each set screw in position with an Allen
wrench and retighten the hex nut. Failure to fol-
lowtheseproceduresmayresultinmisalignment
of the drum(s) and/or the conveyortable.
Caution: On the SUPERMAX models do not
loosenthesetscrewsontheupperdrumsupport
castings.
3. If necessary, adjust the tension of the V-belt
between theprimary motor and drivenpulleys. To
dothis,loosen the twoscrewsinlowerbeltguard
and loosen the pinch bolt located at the back of
the motor support casting. Slide the motor sup-
port casting down the column tube until the V-
belt is taut. Tighten the two screws in lower belt
guard. Retighten the motor support pinchbolt.
Fig.2.Casterandmountinghardware. Fig. 3. Tablesupport casting and setscrews.
T ABLE S UPPORT
CASTING
HEX NUT & SET SCREWS

8
SETTING UP YOUR SUPERMAX
Your SUPERMAX drum sander was adjusted and
aligned at the factory, and it has been carefully
packedforshipment.However,becauseofpossible
stress during transit, the unit should bethoroughly
checkedbeforeuse.Thissectioncovers the pre-
operational checks you should make after
unpacking and final assembly. Unnecessary
problemscanbeavoidediftheseessentialchecks
are performed before operating thesander.
Likewise,performingtherecommendedmonthly
maintenance procedures listed at the end of this
sectionwillhelp assuretrouble-free service.
M AKING E LECTRICAL C ONNECTIONS
A cord and plug are not included. Consult with
an electrician and confirm all applicable
electrical codes before wiring. Pleaseseewiring
diagramsfor details.
Single Phase: The drum(s) of all SUPERMAX
singlephasesandersarepoweredbya5HP,208-
230 volt, single phase motor. A plug and cord
is not supplied. SinglephaseSUPERMAX
sandersrequirea minimumdedicated circuitof
10-gauge wire protected by a 30-amp fuse or
breaker. Extension cords are not
recommended, butifused,shouldbeof at
least 10-gaugewire for lengths up to 10' and
of at least 8-gauge wire for longer lengths.
Views of junction box(under conveyor motor) with cord
installed.
Remove the cover of the conduit box, located
on the underside of the conveyor motor
housing, by removing the screws securing the
cover.
1. Loosen (do not remove) the tension nut of
the strain relief bushing.
2. Feed the new cord through the strain relief
busing.
3. Attach the first HOT (black) wire to the
terminal, by lifting the orange clamp,
inserting the bare wire. Press down on the
orange clamp to secure wire. Attach the
second HOT (red, or white*) in the same
manner. See Figs. A & B.
CAUTION: Confirm the wire is secure in the
terminal clamp and there is no exposed non-
insulated wire!
4. Attach the GROUD (green or green &
yellow) to the ground screw of the conduit
box. Confirm the wire is secure.
5. Tighten strain relief nut. Confirm the
power cord is secure.
6. Confirm all electrical connections are
secure and tight. Confirm wires are within
conduit box and will not be pinched.
7. Re-attach conduit box cover and secure
with screws.
*Follow NEMA/local codes when using
“white”as HOT.
Fig.B. Installed Wiring
Fig.A. Installed Wiring

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Note: The Intellisand™Control (Fig. 5) reduces
the chance of potential damage from many
overload situations. Theconveyormotorfor
feedingstockisinfinitely variable from 0-15
ft/min. If the load on the drum motor reaches its
upper limit, the Intellisand Controlwill
automaticallyslowthefeedrateofthe conveyor.
Whenthe loadis decreased on the main motor,the
feedratewillautomaticallyincreasebut never
exceed the manual setting on the dial.
CONNECTING DUST COLLECTORS
Dust collection is necessary for all SUPERMAX
models.The SUPERMAX 37x2 model is
equipped with three 4" dust exhaustports.
To attach the SUPERMAX to your collection sys-
tem,install4"hosefromyourcollector.(SeeTips
ForMaximum Performance). The minimum
recommended dust collector capacities at the
dust ports are:SUPERMAX 37x2:1,200CFM. For
bestresults,followtherecommendations ofthe
manufacturerof your dust collection equipment.
CHECKING DRUM ALIGNMENT
Your SUPERMAX was shipped from the factory
preadjusted with the drum(s) aligned to the con-
veyortable.Unlessthemachinewasstresseddur-
ing shipment, only fine adjustment should be nec-
essary. Minor alignment corrections can be done
without relieving V-belt tension or adjusting the
tension rollers, but should be done without any
abrasive strips attached.
Fig. 4. Checking drum alignment (inboard side).
Fig. 5. Intellisand Controller.
Remove the abrasives from both drums. Using
aflatpieceofwoodoraluminumasathickness
gauge (aka. feeler gauge),insertitbetweenthe
conveyortableandthe primary (front) drum on
the left (outboard) side ofthe machine (see Fig.
4). Raise the table up so the drum just contacts the
thickness gauge. Rotate drum by hand to check
contact. Then, holding up the front tension roller,
check at out-board side of the drum to see that
the drum is parallel to the table. If it is not,
disengage

10
INBOARD
M ITER G EAR
A DJUSTMENT
KNOB
SHAFT
C OLLAR
INDICATOR
NEEDLE
I NDICATOR
SCALE
I NDICATOR
HEX NUT
Fig.6.Adjustingprimarydrumalignment. Fig. 7. Rear drum adjustmentindicator.
the right (inboard) miter gear (see Fig. 6), finely
raise or lower the right (inboard) side of the table,
using the height adjustment handle, toachieve
parallelalignmentofthefrontdrum. The distance
between the conveyor table and both sides of the
front drum should be the same. Reinstall the
miter gear, aligning one of the two set screws to
the flat of theshaft and tighten both.
Before altering this conveyortableposition,
alsochecktoseethattherear drumislikewise
parallel to the conveyor table, with both sides at
the same height above the table. Using the same
thickness gauge, check both sides of the rear
drum fromthe back of the machinewhile holding
up the rear tension roller. Adjustment ofthe rear
drumis done by using the right and left drum
adjustment knobs (see Fig. 7).
After the rear drum is adjusted, it is important to
reset the rear drum adjustment indicators to zero
on both sides. Toset, loosen the hex nut, then
moving the indicator scale so that the zero mark
is directly under the pointer, and retightening the
hex nut (seeFig.7).Likewise,zerotheindicator
forother side of drum. Take care not to
overtighten the hex nut of the indicator. This can
flarethe brass bushing and render the indicator
inoperable.
Alsocheckthatthesecondarydrumadjustment
knobs turn with a slight resistance to avoid any
movement during operation. Toadjust knob resis-
tance, grip the nut on the threaded stud with a
wrench and rotate the knob to remove any
backlash in the adjustment stud.
CHECKING CONVEYOR BELT
Conveyor belt tension and tracking adjustments
mayoccasionallybenecessaryduringbreak-inand
normaloperationtocompensateforbeltstretching.
BeltTension.Toadjustthetensionoftheconvey-
orbelt, firstadjustthe take-upscrew nut (seeFig.
8)onbothsidesoftheconveyortoobtainapproxi-
matelyequaltensionon bothsidesofthe beltwhen
taut.Insufficientbelttensionwillcauseslippageof
conveyor belt on the drive roller during sanding
operation.Theconveyorbeltistoolooseifitcanbe
stoppedbyhandpressureapplieddirectlytothetop
oftheconveyorbelt.Excessivebelttensioncan

11
TAKE-UP
SCREW NUT
Fig. 8. Adjusting conveyor belt tracking.
resultinbentrollers,prematurewearingofthe
bronze bushings or belt.
BeltTracking.Belttrackingadjustmentsaremade
whiletheconveyorbeltisrunning.Aftertheproper
belttensionisobtained(seeabove),turntheconvey-
or unit on andset it at the fastest speedsetting.
Watchforatendencyoftheconveyorbelttodriftto
onesideoftheconveyor.Toadjustthebelttracking,
tighten the take-up screw nut (see Fig. 8) on the
sidethebeltisdriftingtoward,andloosenthetake-
up screw nut on the opposite side. Adjusting the
take-up screw nuts on both sides of the conveyor
allowsbelttrackingadjustmentstobemadewithout
affecting belt tension. NOTE: Adjust the take-up
screwnutsonly1/4turn (or less)at a time.Then
allowtime for the belt to react to the adjustments
before making further adjustments. Make sure
wrench is below surface when sanding.
C HECKING T ABLE H EIGHT C ONTROLS
The depth of cut is controlled by theheight
adjustmenthandle(seeFig.9).Turning the handle
raises or lowers both sides of the conveyor table
simultaneouslybytransferringthehandlerotation
through themitergearand crossbar assembly.
Important:Beforeusingtheheightadjustment,
besuretoloosenbothofthesetscrewslocatedon
the frontofbothtablesupportcastings(seeFig.3
and Fig.9)to allowthetable supportto slide on
Fig. 9. Table height adjustment.
both column tubes. These set screws are tightened
for shippingandmustbeloosenedand readjusted
to allow the table support castings to move freely
on the column support tubes. Readjust the set
screws so they eliminate free-play between the
table support casting and the column tube. To
properly adjust,tightenthesetscrews(seeFig.3)
onlyfinger- tight so they lightly touch the column
tubes. Then hold each set screw in position with a
hex wrench and tighten the nut.
Check the operation of the height adjustment
mechanism.Ifitdoesnotoperatesmoothlyor eas-
ily,furtheradjustmentsmaybenecessary.Referto
theservicingsectionofthismanual,for further
adjustment procedures.
MONTHLY MAINTENANCE
Forbestresults,performthefollowingrecommend-
ed maintenanceprocedures on a monthlybasis:
• Lubricateconveyorbushingsandcheckforwear.
• Lubricateallmovingparts,suchasthreadedrods,
washers, and columntubes.
• Cleansawdustfromthesandpaperandthecon-
veyor belt.
• Blowdustfromtheinsideofsandingdrum(s)and
the motors.
• Checkallsetscrewsfortightnessonpartssuchas
tablesupportcastings,bearings,conveyorcoupler,
castings, pulleys, and miter gears.
Height
Adjustment
Handle
Drum
Support
Table
Support
Miter
Gears

12
INSTALLING ABRASIVE WRAPS
Note:WhenusingPre-Marked™ORPre-Cut™
abrasive wraps, not all of the steps below are
necessary.
Proper attachment of the abrasive wrap to the
drumiscriticaltoachievingtopperformancefrom
yourSuperMaxdrumsander.Abrasivewraps do
not have to be pre-measured. The end of the roll
is first tapered and attached to the left (out-
board) side of the drum. Then the wrap is
wrapped around the drum, and the second taper is
made for attachment to the right (inboard) side of
the drum. Toattach a wrap to the drum, follow
the procedure below.
1. Markand cut a taper at one end of the roll as
showninFig.10a.Becausethetaperedendshould
use most of the left (outboard) slot width, its end
must be trimmed (Fig. 10-b and 10-c). Raise the
clip lever on the left (outboard) side of the drum
(Fig. 10-d). Insert the tapered end throughthe slot
and into the fastener so that it uses most of the
widthoftheslot. Releasethecliplevertosecurely
hold the strip end in thefastener.
2. Wrapthe strip around the drum, being careful
not to overlap the windings. The tapered cut of
the wrap end should follow the edge of the
drum. Continue to wrap the abrasive in a spiral
fashion by rotating the drum with your left hand
and guiding the strip with your right hand (Fig
10-e). Successive windings of the strip should be
flush with previous windings without any
overlap.
3. Mark the trailing end of the wrap where it
crosses the right (inboard) end of the drum (Fig.
10-f). From this point, cut a taper as was done
with the starting edge of the wrap. (The taper
on the remaining roll can be used as the taper for
the starting edge of the next wrap to becut.)
4. Withthetrailingedgeofthewrapproperly
cut, rewrap the drum and insert the tapered end
through the slot in the right (inboard) end of the
drum. Insert the tapered end into the inboard take-
up fastener. Pull up on the clip lever to open the
clip,andpullthe take-upleverto thetop asshown
(Fig.10-g).Afterinsertingthewrapend,releasethe
clip lever by moving your index finger toward the
drumslot.Thisallowsthecliptoretaintheabrasive
whileholdingthetake-up leverinan“up” position.
5. The take-up fastener is designed to automati-
cally take up any slack caused by stretching of the
abrasive wrap. Important: Position the
abrasive wrap in the slot with sufficient room
between the inside of the slot and the tapered
end of the wrap toallow ittobepulledinto the
drumas needed (Fig. 10-h). Note that not
leaving enough space between the wrap and
the inside of the slot will prevent the take-up
fastener from operating properly.
6. The abrasive wrap may stretch enough in
use toallowthetake-uplevertoreachitslowest
position so it no longer is able to maintain
tension on thestrip(Fig. 10-i). If this occurs,it
willbenecessarytoresetthetake-upleverby
raisingit,pushing the strip end into the slot, and
then releasing the clip lever.
Note: A cleaning stick may be used to
removedepositsandhelpextendabrasivelife.To
use, operate the sanding drum with the dust cover
open. (Caution: For your own safety,always wear
eye protection while performing abrasive clean-
ing,andtakeallprecautionstoavoidanycontactof
hands or clothing with uncovered drums.)Holdthe
cleaningstickagainsttherotatingdrumandmoveit
alongthe drum surface.It isgood proceduretouse
a shop brush to remove any cleaning stick crumbs
fromthe drumsandconveyor.
Fig. 10-a. Marking and cutting taper on wrap.
SANDPAPER WRAP
(A BRASIVE S IDE U P )
Approx. 3"
Also see Fig. 10-b and Fig. 10-c.
3"

13
Fig. 10-b. Trim about 3" from end of cut taper. Fig. 10-c. Trimmed tapered end ready to install.
Fig.10-d.Inserttaperedendinto outboardslot. Fig.10-e.Wraparounddrumwithout overlap.
Fig.10-f.Markwrapwhereit crossesdrumedge. Fig. 10-g. Insert tapered end into inboardslot.
Fig. 10-h. Allow room inside slot for wrap to move. Fig.10-i. Resettake-upasneededaswrapstretches.

14
OPERATING TheSUPERMAX
BeforeusingyourSUPERMAXdrumsander,review
the previous pages inthis manual on initial set-up
andadjustment. In this section, you will learn how
to operate the machine. Note that connecting the
machine to an adequate dust collection system is
necessary before operating theunit.
BASIC OPERATING PROCEDURES
After you have selected and installed abrasive
strips, andconnected the machinetoa dust collec-
tion system, you are ready to begin to use the
SUPERMAX.Thebasicoperatingprocedureforall
of the SUPERMAX models is asfollows:
1. Set depth of cut.
2. Start drum(s).
3. Start conveyor and select feedrate.
4. Start dust collector system.
5. Feed stock through unit.
Tofeed stock through the SUPERMAX, rest and
hold the board to besanded on the conveyor table,
allowing the conveyor belt to carry the board into
the drums. Once the stock is halfway through,
reposition yourself to the outfeed side of the
machineto receiveandcontroltheboardas itexits
the unit.
Fig. 11. SUPERMAX operating controls.
Height Adjustment Handle
ON/OFF
Switch/Drums
Variable Speed
Conveyor Switch
Rear Drum
Adjustment
(2 knobs)

15
R EAR D RUM
FRONT DRUM
C ONVEYOR B ELT
SETTING THE DEPTH OF CUT
Adjusting the SUPERMAX for the proper contact
betweentheabrasiveandthestockdeterminesthe
mechanical depth of cut. Determining the depth
of cut is the most important set-up procedure
before operating the SUPERMAX sander. It may
takesome experimentationto determinethe prop-
erdepthofcut,giventhevariablesofabrasivegrit,
type of wood, and feed rate. For best results, use
scrapwoodtopracticesandingandtodevelopskill
andfamiliaritywiththemachinebeforedoingfin-
ish work.
A good rule of thumb when sanding with grits
finer than 80 is to raise the conveyor table so the
drum(s) contacts the workpiece but still can be
rotated by hand. When using grits coarser than 80
grit,youmay be able toraisetheconveyortable
slightlymore. However, a combination of several
variables will determine the proper depth of cut
to use, including the following:
1. Abrasive type and gritsize.
2. Width of the piece beingprocessed.
3. Hardness of the piece.
4. Feed rate of the conveyor belt.
The depth of cut of the primary drum is
adjusted by the table height adjustment handle.
The depth of cut of the secondarydrum is
controlled by the two adjustment knobs(analog
indicators)locatedonbothsidesof the drum. The
drum adjustment knobs allow properdepthofcut
withvirtuallyanyabrasivegrit combinations on
the drums. The two drums are typically both
used during sanding operations, but either the
primary or secondary drum can be used alone.
Front Drum. To adjust the front drum, set the
drum height equalto thethicknessofthepieceto
beprocessed. Thisismosteasilydoneasfollows:
Lowertheconveyortableto a depthgreaterthan
thethicknessof the board. Do not start the
drum at this time.
Start the conveyor and feed the board until it is
beneath the front drum. Raise the conveyor table
so the front drum contacts the board but the drum
can still be rotated by hand. Continue to run the
board through the machine. This is the setting for
the first sanding pass.
The depth of cut can be measured on the depth
gauge,orbyfractionsofarevolution of theheight
adjustment handle. (Note: One revolution of the
handle will raise the table 3/32 of an inch; 1/3 of a
turn will equal 1/32 of an inch,etc.)
RearDrum.Sanding with adifferent abrasive
griton each drumis possible in a single pass. The
coarser abrasive is wrapped on the front drum
for dimensioningandsurfacingofthe wood,
whilethe finer abrasiveiswrappedontherear
drum. Whenusedin thisway,the reatdrum
generally is positioned just slightly lower than
the frontdrum so it removes the scratches left by
the coarser grit on the front drum.
However,the exact depth of cut of the rear drum
willdependonthespecificabrasivegritson each
of the drums.
The chart shows grit combinations and rear
drum settings, can also be found under thedust
coverofyourmachine.Itsuggestssettings for
variousabrasivegritcombinations;trytheseto
startandmakeadjustmentsas necessaryforyour
work. When adjusting the rear drum, turn
Fig. 12. Relative positions of dual drums.

16
both adjustment knobs so that the indicator nee-
dlesmove to the desired setting at the plus(+) end
of the scale. The depth of cut of therear drum
shouldberechecked each time a different grit
combination isused.
Fine-tuning the rear drumsettingscanhelp
improveperformance.Here isaquickway: Raise
thereardrum so itishigher thanthe frontdrum,
with the indicatorsshowinga -3 setting. Place the
stock to be sanded under the front drum. Then
raise the conveyor table so the frontdrum
contactsthewood,but stillcan be rotated by
hand. Sandthe piece with the front drum and stop
the machine. Then insert the stock in from the
back so it is under the rear drum only. Lower the
rear drum using the adjustment knobs on each
side. Lower the rear drum until it contacts the
stock but still can be rotated by hand. Use this
setting, and note the readings on the depth
indicators for futurereference.
DISENGAGING THE DRUMS
On dual drum models,either theprimary (front) or
rear drum may be disengaged so that the other
drum can be used alone. To use the front
drumasasingle-drumsander,disengagethe rear
drumbyraisingittothe-2settingonthe indicators
onbothsides.Tousethereardrum alone, lower it
to the +4 setting on both sides. In this mode, the
table height adjustment handle is used to
determine the depth of cut, which will be limited
to about 1/32ofan inchbeforethe front drum
starts contacting the workpiece.
SELECTING INTELLISAND FEED RATES
Selectingtheproperfeedrateisessentialtoproper
finishsanding.Thevariablefeedratecontrolofthe
conveyor belt adjusts the load on the machine; it
can be infinitely adjusted for maximum operating
performance.Afasterfeedrateallowsfastersanding
but fewer revolutions of the drums per inch of
sanding.Aslowerfeedrateprovidesmorerevolu-
tions of the drum per inch of sanding to allow a
greater depth of cut and smoother sanding.
TheIntellisandcontrol(SeeFig.13)continuously
monitors the load on the drum motorand automat-
icallyregulatesthespeedoftheconveyormotorto
maintain the highest feed rate without overload. If
the load on the drum motor increases, the
Intellisand control will decrease the conveyor feed
rateandwillstoptheconveyorunderextremecon-
ditions. If the load on the drum decreases, the
Intellisand control will increase the feed rate but
WILL NOT increase it faster than the manual set-
ting on the switchdial.
For abrasive planing and thicknessing, the feed
rate can be set at any speed after adjusting for the
proper depth of cut. If the load on the drum motor
approaches its limit, due to inconsistent stock, the
feedratewillautomaticallyslowdown.Asthe load
onthedrummotordecreases,thefeedratewill
automaticallyincreasetoits original setting.
When finish sandingwith grits finer than 80, the
bestfinishwillbeachievediftheconveyordoesnot
change speeds during operation. While the
Intellisandcontrolwillslowthefeedratewhenthe
main motor reaches its limit, it is advisable to
operate below the regulation point. When the red
indicatorlightcomeson,theIntellisandcontrolhas
detected too great a depth of cut and/or too fast a
feedrate.Thischangeinconveyorspeedmayleave
adetectablemarkonfinishsurfaces.Ifamarkisvis-
ible,makeadjustmentsbyslowingconveyorand/or
lessening the depth of cut and run the stock
through again.
DUAL DRUM
GRIT COMBINATIONS & SETTINGS
ABRASIVE GRIT GRADES
FRONT REAR REARDRUM
DRUM GRIT DRUM GRIT SETTING
36 36 2.0
36 60 2.5
36 80 2.5
60 80 2.0
60 100 1.5
80 100 1.0
80 120 1.0
100 150 0.5
120 150 0.5
120 180 0.5
150 220 0.5
Note: The grit and settings shown are starting sugges-
tions only. Other combinations and settings are possi-
ble, depending on your particular circumstances.

17
Begin experimenting with the feed rate set at
about40% to 50% of maximum. The best feed rate
willdependon anumberoffactors,includingtype
of stock, grit and depth of cut used, and whether
the stock is feed directly in line with the conveyor
bedor atanangle.Ifyouobservearippleeffecton
the stock, slow down the feed rate. If the finish is
smooth and the machine is not overworking, you
can experiment with usinga faster feed rate.
Also try a faster feed rate if the stock you are
working begins to show burn marks. With cherry,
hard maple and some other hardwoods, using a
shallower depth of cut and a faster feed rate will
help minimize burn marks. Slightly angling the
stockasitisfedintothemachinemayalsohelppre-
vent burning the stock.
Becauseofthewiderangeofvariables,itisimpor-
tant to experiment with your specific conditions
andmakeadjustmentstoachievetheoptimumfeed
rate.If problemsoccur,firstcheckthedepthofcut
and/oradjustthefeedrate.RefertoTroubleshoot-
ing YourSUPERMAX inthismanual.
USING THE DEPTH GAUGE
Thedepthgaugemeasuresthedistance between
the conveyor table and the sanding drum for
thickness dimensioning. Tocalibrate the depth
gauge, raise the conveyor table until the drum(s),
wrappedwithabrasive,touchesthe con-
veyortable. Make sure the indicator is laying
snug on the table support casting. Loosenthe
knob holding the top of thickness scale and
adjust the scale to zero. Tighten the knob of the
top thickness scale.
USING THE ElectronicDEPTH GAUGE (EDG)
The depth gauge has itsownmanual. TheEDG
canbecalibratedby raisingthe conveyoruntilthe
drum(s)aretouching theconveyorandzerothe
readout. Anothercalibration method is to sand a
piece of wood, measuring the thickness of the
wood and change the reading onthereadout. See
EDGmanualfor details on calibrating and
operation.
USING THE DEPTH STOP
A depth stop is located on the column tubejust
above the talesupport casting on the right
(inboard) side. The depth stop casting has a lock-
ing knob located on one side of the casting. To
operate the depth-stop: Determine desired thick-
nessofsandedpartby eitherreferencingthe depth
gaugeorsandingapartandmeasuringthethickness
ofthesandedpart. Atthissandingthickness,posi-
tion the depth-stop along the column tube with the
gaugerestingonthetablesupportcastingandtight-
en the locking knob on the depth stop. This will
give the desired thickness to the material and help
prevent under-dimensioning.
Fig.13.IntellisandControlleranddepthgauge. Fig. 14. Depth gauge components, on some models.
Indicator
Light
Depth Gauge
Adjustment
Table Support
Casting
Depth Indicator &
Depth Lock
Depth Scale

18
SELECTING DRUM ABRASIVES
It isimportant toselect theproper gritofabrasives
forthetypeofsandingbeingperformedtoachieve
maximum sanding results. As with any sanding
operation, first begin sanding with a coarser grit,
depending on the roughness of the stock or the
amountofstocktoberemoved.Thenprogressive-
lyworktowardfinergrits.Thechartbelowshows
the general uses for the various grits. Performax
Productsoffersabrasivesinthetendifferentgrits
shown.
SelectingAbrasiveGrits.Theamountofstockto
beremovedisamajorconsiderationwhenchoos-
ing the grit grade to start with. Grits 24, 36, 50,
and 60 are primarily designed for stock removal.
Grits 24 and 36 will remove the most material in
onepass,whetheryouaredoingabrasiveplaning,
cleaningupgluedpanels,orflatteningstock.Grits
from100through220areprimarilyfinishing grits
designed to remove the scratch pattern from the
previous grit used. For best results, never skip
more than one grit grade when progressing
through a sanding sequence.
For fine work, such as furniture, try not to skip
anygritgradesduringthesandingprocess.Ingen-
eral, premium quality abrasives such as genuine
SuperMax abrasiveswillproduceabetterfinish
with a less noticeable scratch pattern. Caution:
Grits that are too fine can sometimes burnish the
wood and leave a glossy surface which will not
accept stains evenly. This will vary by type of
wood.Oak,forexample,issusceptibletoburnish-
ing because of its openpores.
Selecting Grit Combinations. The chart shown
is a general guide to consult when selecting grits
to use on dual drum machines and setting the rear
drum. This chart is also provided under the dust
cover on the SUPERMAX for quick reference. The
first column suggests grits for the primary (front)
drum of dual drum models, while the second
column suggests a corresponding grit to use on
the second (rear) drum. The third column
suggests depth settings to try on the rear drum,
depending on the grit used. The setting values are
based on a “0” reading when the drum contacts
the work piece but still can be rotated by hand.
Note that the grits and settings are starting sug-
gestionsonly.Othercombinationsandsettingsare
possible, depending on your particular circum-
stances. It is a good idea to keep records of the
combinations you use and their results. Keeping
these records handy will help you select the best
combinations of grits for futurework.
ABRASIVE SELECTION GUIDE
GRIT COMMON APPLICATION
24 Grit Abrasive planing, surfacing rough-sawn boards, maximum stock removal, glue removal.
36 Grit Abrasive planing, surfacing rough-sawn boards, maximum stock removal, glue removal.
50 Grit Surfacing and dimensioning boards, trueing warped boards.
60 Grit Surfacing and dimensioning boards, trueing warped boards.
80 Grit Light dimensioning, removal of planer ripples.
100 Grit Light surfacing, removal of planer ripples.
120 Grit Light surfacing, minimal stock removal.
150 Grit Finish sanding, minimal stock removal.
180 Grit Finish sanding only, not for stock removal.
220 Grit Finish sanding only, not for stock removal.

19
TIPS FOR MAXIMUM PERFORMANCE
TheversatilitydesignedintotheSUPERMAX drum
sanderallowsittobeusedforawide-rangingvari-
ety of tasks that will boost the return on your
investment. For example, its capabilities range
from taking the place of a planer to thickness
roughstock, all theway tospeeding up finesand-
ingworkoftendonewithslower,dust-generating
hand sanders.
Learning to use its multiple adjustments and
controls will allow you to fine-tune the machine
for maximum results, regardless of the job to be
done. Thebest results come from experimenting
withdifferentabrasivecombinationsandmachine
adjustments to fit the job at hand. Following is a
listingofusefultips whichcanhelpyou improve
performance of your sander.
Dust Collection. When connecting dust collec-
tors, remember that straight pipe will not restrict
airflow as much as flexible tubing. Also, Ys and
elbowswillrestrictairflowlessthatTs.Whencon-
necting to the ports of the 37x2, use a larger
diameter pipe to the machine, and then split to
4" hoses connected to the ports.Analternativeis
touseseparate4"lines running to the ports; do
not use only one 4" line and split it by the
machine.
Multiple-Piece Sanding Runs. When abrasive
planing (or thickness sanding) a run of similar
piecesthatyouwanttohave the samethickness,it
is best to determine the thickness of the thinnest
pieceandprocessallpiecestothatsamethickness.
Be aware that the sander will remove cups and
crownsintheworkpiece;considerthiswhenmea-
suringandprocessingstocktothesamethickness.
SandingMultiplePieces.Whensanding multiple
piecessimultaneously,makesuretostag- ger
(step) the pieces across the width of the con-
veyor belt. This provides better contact with the
tensionrollers.Trytoonlyprocessmultiplepieces
ofsimilarthickness.Ifthereisasignificantthick-
ness difference, the thinner pieces can slip on the
conveyor belt when they do not contact the
tension rollers. Also note that pieces thicker than
3/4" should be longer than the minimum
normally recommended to prevent tipping of the
stock (see Specifications).Goingtolongerpieces
is especiallyimportantwhensandingboxesor
other tall, short or light stock.
Edge Sanding. When edge sanding, the sander
willmimictheoppositeedgeofthe stock which
is laying on the conveyor belt. Becauseof this, it
isimportant for the stock edge to have been
ripped orjointedat the proper angle to the face
before the sanding process. When edge sanding
stock that is less than 3/4" wide, or more than 2"
high,itis good procedure tostackand clamp
severalpiecestogethertopreventthemfrom
slipping or tipping on the conveyor belt.
Sanding Imperfect Stock. When sanding stock
with a cup or crown, place the crown up. This will
stabilizethestock tohelp prevent tipping orrock-
ing during sanding. (After the crown has been
removed and the top is flat, turn the stock over
and sand the opposite side.) Toavoid personal
injury,takespecialcarewhensandingstockthatis
twisted, bowed, or otherwise varies in thickness
from end toend. Ifpossible, support such stock as
it is being sanded to keep it from slipping or tip-
ping. Use extra roller stands, help from another
person, or hand pressure on the stock, to minimize
potentially hazardous situations.
Face Frames & Raised Panel Doors. It is very
important to have the proper abrasive contact
when doing this type ofsanding. If the machine is
settotake an excessivedepthofcut,the resultcan
be a gouge or dip as the drum goes from sanding
the rails at full width to sanding just a few inches
of width on the stiles. To prevent this,makesure
thatwhenusingabrasivesfiner than 80 grit the
drum is in contact with the wood but can still be
spun by hand. If there is room, angling the stock
on the conveyor belt can also help.Slowingthe
conveyorfeedwhencomingtoa rail in the stock
can help prevent a dip or gouge.
Thisallowstheabrasivetoworkthewiderwidth
withlesseffort,andtoachievebetterconsistency
of the finished surface.
Stock Feeding Angle. Some pieces, because of
their dimensions, will need to be fed into the
machine at a 90° angle (perpendicular to the

20
drums).However,evenaslight offsetangleofthe
stockwillprovideformoreeffectivestockremoval.
The optimum feeding angle for stock removal is
about60°. Anglingtheworkpiecefor stock
removalprovidesotheradvantages,suchas less
loading of certain areas of the drums due to glue
lines or mineral streaks in the stock, more even
wearofabrasivestrips,potentiallyfasterfeed
rates, and lighter loads on themotor.
Note that to get the best final finish, however,
the stock should be fed through the machine so it
will be sanded in line withthe grain of the wood
on the final one or twopasses.
Cleaning Abrasive Strips. Regularly clean the
abrasive strips on the drums with commercially
availablecleaningsticks,followingthemanufac-
turer’sdirections.Cleaningsticksare available
from your dealer.Whencleaning,alsobrushthe
stick crumbs fromthe drum while itis still
rotating and from the conveyor belt.Important:
Weareyeprotection,tight-fitting clothesandkeep
alert during this operation to avoid injury. Cloth-
backed abrasives can be cleaned by soaking in
paint thinner or mineral spirits for 20 minutes to
1 hour, then using a brush to remove any build-up
orburns.Drytheabrasivestripscompletelybefore
reuse. In some cases build-ups resulting from
burnscanberemovedwithPlexiglasheldonedge
over a rotating drum. Have dust collection turned
on when cleaning.
StretchingAbrasiveLife.Whensandingmetalor
solidsurface,MDF,orparticleboard,ceramic and
zirconiumabrasive tend to last longer than
aluminum oxide and allow a more uniform
finish.
Abrasivelifecanalsobeincreasedbyremoving
theabrasivewrapfromthe drum and reversing it.
To do this, remove the wrap and use what was
the trailing end as the starting end on the left
(outboard) side of thedrum.
Reversingthewrapwillprovideafreshsetof
cutting edges on the drum.
Keeping The Machine Clean. For best results,
makecleaningthemachine a regularshopproce-
dure.Allowingexcessbuild-upofdustanddebris
canadverselyaffectperformancethroughtheload-
ing of the abrasives, slippage on the conveyor
table, and/or the accumulation of material inside
the drums which can throw off the center of bal-
ance. Leave the dust collector on when cleaning
dustfromthedrums. Also brush the conveyorbelt
after cleaning operations. If not cleaned, the con-
veyorbeltcouldallowstocktoslipduringsanding
operations.
Fig. 15. Offset stock feedingangle. Fig. 16. Cleaning abrasive strips.