SuperMax 913003 Operating Instructions And Parts Manual
UPERM AX TOOLS
Improving Your Greatest Asset ... Time
1275 Corporate Center Drive, Eagan, Minnesota 55121
(888)454-3401 Fax(651) 454-3465 www.supermaxtools.com
Operating Instructions and Parts Manual
Dual Drum Sander
Model 913003
Revision A 9/2012
Table of Contents
Table of Contents........................................................................................................................................ 2
Safety: Authorized Use ............................................................................................................................... 3
Safety: General Safety Notes...................................................................................................................... 3
Remaining Hazards .................................................................................................................................... 5
Specifications.............................................................................................................................................. 5
Features and Terminology .......................................................................................................................... 6
Setup and Assembly ................................................................................................................................... 7
Unpacking ............................................................................................................................................... 7
Contents of boxes ................................................................................................................................... 7
Stand assembly....................................................................................................................................... 8
Sander installation................................................................................................................................... 8
Dust collection ......................................................................................................................................... 9
Installing abrasives.................................................................................................................................. 9
Grounding Instructions .............................................................................................................................. 10
Extension Cords .................................................................................................................................... 10
Adjustments .............................................................................................................................................. 11
Drum height control ............................................................................................................................... 11
Depth gauge.......................................................................................................................................... 11
Conveyor belt tension and tracking ....................................................................................................... 11
Conveyor belt replacement.................................................................................................................... 11
Checking drum alignment...................................................................................................................... 12
Tension roller alignment ........................................................................................................................ 13
Adjusting height control ......................................................................................................................... 14
Poly-v belt adjustment/ replacement ..................................................................................................... 14
Operating Controls.................................................................................................................................... 15
Start/stop – sanding drum ..................................................................................................................... 15
Start/stop – conveyor ............................................................................................................................ 15
Drum height control ............................................................................................................................... 15
Operation .................................................................................................................................................. 15
Basic operating procedure .................................................................................................................... 15
Thickness measuring device ................................................................................................................. 16
Setting the depth of cut ......................................................................................................................... 16
Disengaging the drums ......................................................................................................................... 17
Selecting feed rates............................................................................................................................... 17
Edge sanding ........................................................................................................................................ 18
Digital Readout ......................................................................................................................................... 18
Digital readout for rear drum height....................................................................................................... 18
Digital readout for sanding thickness..................................................................................................... 19
Selecting Drum Abrasives......................................................................................................................... 19
Selecting abrasive grits ......................................................................................................................... 19
Selecting grit combinations.................................................................................................................... 20
Tips for Maximum Performance ................................................................................................................ 20
Multiple-piece sanding runs................................................................................................................... 20
Sanding multiple pieces at once............................................................................................................ 20
Edge sanding on conveyor .................................................................................................................... 20
Sanding imperfect stock ........................................................................................................................ 20
Face frames & raised panel doors......................................................................................................... 21
Stock feeding angle............................................................................................................................... 21
Cleaning abrasive strips ........................................................................................................................ 21
Keeping the machine clean ................................................................................................................... 21
Maintenance ............................................................................................................................................. 21
Troubleshooting ........................................................................................................................................ 22
Exploded View: Machine Body Assembly ................................................................................................. 25
Part List: Machine Body Assembly............................................................................................................ 26
Exploded View: Drum Head Assembly ..................................................................................................... 29
Part List: Drum Head Assembly ................................................................................................................ 30
Exploded View: Conveyor and Motor Assembly ....................................................................................... 32
Part List: Conveyor and Motor Assembly .................................................................................................. 33
Exploded View and Parts List: Closed Stand Assembly ........................................................................... 35
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Exploded View and Parts List: In/ Outfeed Tables Assembly (Optional) ................................................... 36
Wiring Diagram ......................................................................................................................................... 37
Warranty ................................................................................................................................................... 38
Safety: Authorized Use
Warning
This sander is designed for sanding wood and similar materials only. Sanding of other materials is not
permitted and may be carried out in specific cases only after consulting with the manufacturer.
The machine is not suitable for wet sanding.
The proper use also includes compliance with the operating and maintenance instructions given in this
manual.
The machine must be operated only by persons familiar with its operation and maintenance and who are
familiar with its hazards.
The required minimum age must be observed.
The machine must only be used in a technically perfect condition.
When working on the machine, all safety mechanisms and covers must be mounted.
In addition to the safety requirements contained in these operating instructions and your country’s
applicable regulations, you should observe the generally recognized technical rules concerning the
operation of woodworking machines.
Any other use exceeds authorization. In the event of unauthorized use of the machine, the manufacturer
renounces all liability and the responsibility is transferred exclusively to the operator.
Safety: General Safety Notes
Woodworking machines can be dangerous if not used properly. Therefore the appropriate general
technical rules as well as the following notes must be observed.
1. Read and understand the entire instruction manual before attempting assembly or operation.
2. Keep this operating instruction close by the machine, protected from dirt and humidity, and pass it
over to the new owner if you part with the tool.
3. No changes to the machine may be made.
4. Daily inspect the function and existence of the safety appliances before you start the machine.
Do not attempt operating in this case, protect the machine by unplugging the main cord.
5. Remove all loose clothing and confine long hair.
6. Before operating the machine, remove tie, rings, watches, other jewelry, and roll up sleeves above
the elbows.
7. Wear safety shoes; never wear leisure shoes or sandals.
8. Always wear the approved working outfit.
9. Do not wear gloves.
10. Remove jammed work pieces only when motors are turned off and the machine is at a complete
standstill.
11. Install the machine so that there is sufficient space for safe operation and work piece handling.
12. Keep work area well lighted.
13. The machine is designed to operate in closed rooms and must be placed stable on firm and leveled
ground.
14. Make sure that the power cord does not impede work and cause people to trip.
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15. Keep the floor around the machine clean and free of scrap material, oil and grease.
16. Stay alert! Give your work undivided attention. Use common sense. Do not operate the machine
when you are tired.
17. Do not operate the machine under the influence of drugs, alcohol or any medication. Be aware that
medication can change your behavior.
18. Never reach into the machine while it is operating or running down.
19. Never leave a running machine unattended. Before you leave the workplace switch off the machine.
20. Keep children and visitors a safe distance from the work area.
21. Do not operate the electric tool near inflammable liquids or gases. Observe the fire fighting and fire
alert options, for example the fire extinguisher operation and place.
22. Don’t use in a dangerous environment. Don’t use the machine in damp or wet locations, or expose it
to rain.
23. Wood dust is explosive and can also represent a risk to health. Dust from some typical woods in
particular, and from hardwoods like beach and oak, is classified as a carcinogenic substance. Always
use a suitable dust extraction device. To reduce your exposure to these chemicals, work in a wellventilated area and work with approved safety equipment, such as face or dust masks that are
specifically designed to filter out microscopic particles.
24. Before machining, remove any nails and other foreign bodies from the work piece.
25. Never operate with the guards not in place – serious risk of injury!
26. Use a feeding aid if you want to feed short stock into the machine.
27. Machine only stock which rests securely on the table.
28. Specifications regarding the maximum or minimum size of the work piece must be observed.
29. Do not machine more than two work pieces at the same time.
30. Connection and repair work on the electrical installation may be carried out by a qualified electrician
only.
31. Have a damaged or worn power cord replaced immediately.
32. Replace any torn or worn sanding paper immediately.
33. Make all machine adjustments or maintenance with the machine unplugged from the power source.
34. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
35. Stand to one side of the conveyor and make sure no one else is standing in line with the conveyor
while feeding stock into the machine. Should a part slip while being fed, it may exit the machine at a
high rate of speed and can cause injuries to anyone standing directly in front of the infeed.
36. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for
which it was not designed. The right tool will do the job better and safer.
37. Use recommended accessories; improper accessories may be hazardous.
38. Always feed stock against the rotation of the drum.
39. Keep your hands clear when feeding parts onto the conveyor. The part will be forced down as it
begins to feed, causing a pinching action between the part and the conveyor bed. Never reach into a
running machine. Turn off sander and disconnect from power before attempting to retrieve parts from
within the machine.
40. Turn off the machine and disconnect from power before cleaning. Use a brush or compressed air to
remove chips or debris — do not use your hands.
41. Do not stand on the machine. Serious injury could occur if the machine tips over.
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Remaining Hazards
When using the machine according to regulations some remaining hazards may still exist.
1. The moving sanding drum in the work area can cause injury.
2. Drawing-in/trapping hazard by power feed mechanism.
3. Squeezing hazard by work piece power-outfeed.
4. Thrown workpiece parts can lead to injury.
5. Sanding dust and noise can be health hazards. Be sure to wear personal protection gear such as
safety goggles, ear plugs and dust mask. Use a suitable dust exhaust system.
6. The use of incorrect main supply or a damaged power cord can lead to injuries caused by electricity.
Specifications
Model Number .............................................................................. ................................................... 913003
Maximum Sanding Width .............................................................. .......................................................... 25”
Minimum Sanding Length ............................................................. ................2-1/4” (varies with application)
Maximum Thickness ..................................................................... ...........6” typical (varies with application)
Minimum Thickness ..................................................................... ...... 1/32” typical (varies with application)
Maximum Edge Sanding Width..................................................... ............................................................ 6”
Drum Dimensions (dia.x L)............................................................ ..............................................5” x 25” x 2
Drum Speed.................................................................................. .............................................. 1700 RPM
Conveyor Variable Feed Rate....................................................... ................ Variable, 0-22 feet-per-minute
Dust Port Diameter ....................................................................... ...................................................... 4” x 2
Conveyor Motor ............................................................................ ............ 200 Watt direct drive D.C. motor
Power............................................................................................ ................................. 230V, single phase
Motor Output Power...................................................................... ............................. 3HP, continuous-duty
Overall Dimensions (HxWxD) ....................................................... ........................................ 52” x 42” x 27”
Net Weight .................................................................................... ............Machine: 474 lbs, Stand: 102 lbs
Reference Current ........................................................................ ................................................ 13.5 Amp
Installation Fuse Protection........................................................... ................................................... 20 Amp
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, we reserve the right to change specifications at any time and without prior
notice, without incurring obligations.
5
Features and Terminology
The illustration below shows the major components and features of the Dual Drum Sander. These are
referenced throughout the manual and will help to familiarize you with the operation and functions of the
machine.
2
3
7
22
1. Front drum
2. Rear drum (independently adjustable)
3. Dust cover
4. Height adjustment handwheel
5. Manual scale
6. Digital readout
7. Drum motor
8. Magnetic switch
9. Conveyor gearmotor
10. Controller
11. Conveyor belt
Figure 1
12. Thickness measuring device
13. Outboard column and leadscrew
14. Poly-V belt
15. Dust ports
16. Fence
17. Rear drum adjustment handwheel
18. Rear drum lock handle
19. Conveyor belt take-up
20. Extension table
21. Rear drum height gauge
22. Rear drum setting chart
6
17
Setup and Assembly
Unpacking
Open boxes and check for shipping damage.
Report any damage immediately to your
distributor and shipping agent. Do not discard any
shipping material until the Dual Drum Sander is
assembled and running properly.
Compare the contents of your boxes with the
following parts list to make sure all parts are intact.
Any missing parts should be reported to your
distributor. Read this instruction manual
thoroughly for assembly, maintenance and safety
instructions.
Contents of boxes
Box # 1 Sander & Conveyor Bed Assembly
See Figure 2.
1 Sander and Conveyor Bed Assembly (A)
2 Handle (B)
1 Large Handwheel (C)
1 Small Handwheel (D)
1 Fastener Tool (E)
1 12/14 mm Open Wrench
1 Owner's Manual
1 Hardware Bag, containing:
4 Hex Cap Screws 3/8-16 x 3/4" (F)
4 Flat Washers 3/8” (G)
Box # 2 Enclosed Stand Assembly
See Figure 3.
1 Front Plate with Door – J
1 Rear Plate – K
1 Hinged Bottom Plate – L
2 Stand Sides – M
1 Hardware Bag, containing:
12 Hex Cap Screws, 5/16-18x1/2” (N)
12 Flat Washers, 5/16” (O)
J
0
Figure 2 – (Box #1)
K
E
F
G
M
N
0
Figure 3 – (Box #2)
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Stand assembly
See Figure 4.
1. Position two stand sides (M) on the ground with
the base down and with the openings toward the
center.
2. Mount hinged bottom plate (L) to stand sides
with four screws (N) and washers (O). Handtighten only at this time.
3. Secure rear plate (K) to left and right stand
sides (M) with four screws (N) and washers (O).
Hand-tighten only.
5. Secure front plate with door (J) to left and right
stand sides (M) in same manner as above with
four screws (N) and washers (O). Hand-tighten
only.
Fasteners will be fully tightened only after sander
is mounted, to ensure proper settling of stand.
Figure 5
3. Position sander atop the stand. Open stand
door and secure sander from beneath using four
screws (F, Figure 2) and flat washers (G, Figure
2).
4. Attach large handwheel (C, Figure 6) to height
adjustment screw, and tighten the two set screws.
5. Install handle (B, Figure 6) into threaded hole
and tighten nut against handwheel.
M
Figure 4
Sander installation
Sander is heavy! Exercise caution and use
properly rated lifting equipment (hoist, straps,
or forklift). Failure to comply may cause
serious injury.
1. Remove the two shipping brackets that secured
the sander to the pallet.
2. Lift sander using straps beneath the cast iron
frame, but not directly under the drums or
conveyor. See Figure 5
Do not lift sander under drums or conveyor
table, or any area that can be damaged or
misaligned in the process.
Figure 6
6. Place spring (I, Figure 6) onto rear drum
adjustment shaft, and push it into recess in
locking handle. Attach small handwheel (D, Figure
6) and tighten the two set screws on the flats of
the shaft.
7. After installing sander to stand, finish tightening
all mounting hardware that was previously handtightened during the stand assembly.
8
Dust collection
Dust collection is mandatory for a safe work
environment and extended abrasive life. This
sander is equipped with two 4” dust collection
ports at the top of the dust cover. It is designed to
be used with standard 4” dust collection hoses
connected to a high volume dust collector.
Installing abrasives
The sander is shipped with an 80-grit abrasive
strip on the front drum, and a 100-grit on the rear.
Proper attachment of abrasive strips to drum is
critical to achieving top performance from your
drum sander. Abrasive strips do not have to be
pre-measured. The end of the roll is first tapered
and attached to the left (outboard) side of the
drum. Then the strip is wrapped around the drum,
and the second taper is made for attachment to
the inboard side of the drum.
Note: You can use the original abrasive strip
mounted to the drum as a template for cutting
your own strips.
1. Mark and cut a taper at one end of the roll as
shown in Figure 7. Because the tapered end
should use most of the outboard slot width, its
end must be trimmed back as shown.
-
-
---
) ,
t
3"
l
SANDPAPER STRIP
(ABRASIVE SIDE UP)
~
Cui, __________ llJ\r.e_
-- s
15-3/4" --:----
-
1--Appr. 3u,..I
Figure 7
2. Raise fastener lever as shown in Figure 8 on
outboard end of drum, and insert tapered end
of abrasive so that it uses most of slot width.
Release fastener lever to securely hold strip
end to fastener.
OUTBOARD
FASTENER
with the other (Figure 9). Successive windings
of the strip should be flush with previous
windings without any overlap.
5. Mark trailing end of strip where it crosses right
(inboard) side of drum (Figure 10).
Figure 9
Figure 10
6. Remove abrasive strip from drum, and cut a
taper as was done with the starting edge (see
Figure 7). Note: The taper on the remaining
roll can be used as the taper for the starting
edge of the next strip to be cut.
7. Rewrap drum beginning at the left, as
described in steps 2 through 4.
8. You can use your fingers to work the inboard
take-up fastener, but it is more convenient to
use the supplied Fastener Tool (E, Figure 2).
Hold the Fastener Tool with the red end
pointing away from you (see Figure 12) and
insert its hook into the outside hole of fastener
lever (Figure 11).
3
2 T
, A
D
E
p
H
G
Figure 8
3. Begin wrapping strip around drum. The
tapered edge of the strip end should follow
edge of drum.
4. Continue to wrap abrasive in spiral fashion by
rotating drum with one hand and guiding strip
Figure 11
9
Grounding Instructions
Figure 12
Figure 13
9. Lift lever with the Fastener Tool, pulling the
lever up until it touches inside of drum.
IAWARNINGI
Electrical connections must be
made by a qualified electrician in compliance
with all relevant codes. This machine must be
properly grounded to help prevent electrical
shock and possible fatal injury.
A power plug is not provided with this sander. You
may either connect the proper UL/CSA listed plug
or “hardwire” the machine directly to your
electrical panel provided there is a disconnect
near the machine for the operator. Consult
electrical drawings in this manual for further
clarification of wiring setup.
This machine must be grounded. Grounding
provides a path of least resistance to help divert
current away from the operator in case of
electrical malfunction.
Make sure the voltage of your power supply
matches the specifications on the motor plate of
the machine.
Extension Cords
If an extension cord is necessary, make sure the
cord rating is suitable for the amperage listed on
the machine's motor plate. An undersize cord will
cause a drop in line voltage resulting in loss of
power and overheating.
10. Turn Fastener Tool counterclockwise and
lower it onto the abrasive strip, making sure it
is holding the paper tight (Figure 13).
11. Insert tapered end of abrasive strip (B, Figure
14) into slot and fastener. It may be necessary
to trim tapered end of abrasive strip so that it
does not “bottom out” against inside of drum.
IMPORTANT: Leave a gap – at least 1/8” –
between tapered strip and the closed end of the
slot (Figure 13) to allow strip to be pulled into
fastener as needed. If necessary, trim outside
edge of abrasive strip.
12. Hold abrasive in place with your left hand, lift
up the Fastener Tool and turn it clockwise
while maintaining upward pressure. Slowly
move Fastener Tool away from you slightly,
then down, while easing it out of hole. This
releases the lever (Figure 11) in its proper
position.
All abrasive strips will stretch in use and may
stretch enough to allow the take-up lever to reach
its lowest position, so that it cannot maintain
tension on the strip. If this occurs, follow the
above procedures to re-set the take-up lever.
Always remove Fastener Tool from machine
before operating.
The chart in Table 1 shows the correct size cord
to use based on cord length and motor plate amp
rating. If in doubt, use the next heavier gauge.
The smaller the gauge number, the heavier the
cord.
Extension Cord Length *
25
50
75
100
150
Amps
< 5 16 16 16 14 12 12
5 to 8 16 16 14 12 10 NR
8 to 12 14 14 12 10 NR NR
12 to 15 12 12 10 10 NR NR
15 to 20 10 10 10 NR NR NR
21 to 30 10 NR NR NR NR NR
*based on limiting the line voltage drop to 5V at 150% of the
rated amperes.
NR: Not Recommended.
feet
feet
feet
feet
feet
200
feet
Table 1
10
Adjustments
Drum height control
The drum height and depth of cut are controlled
by the height adjustment handle (see Figure 5).
Rotating the handle counterclockwise lowers the
drum, clockwise raises it. One revolution of the
handle will move the drum 0.05”.
Depth gauge
The depth gauge indicates distance between
bottom of front sanding drum and top of conveyor
surface. Adjustment is performed by “zeroing” the
gauge. The scale has been preset at factory, but
should be verified by the operator.
1. With an abrasive strip on the drum, lower
sanding drum while slightly rotating it, until it
just touches top of conveyor belt.
2. At this drum position, the depth gauge pointer
(A, Figure 14) should align with the zero mark
of the scale. If it does not, loosen hex nut (B,
Figure 14) and adjust pointer to align with
zero.
3. Re-tighten hex nut (B, Figure 14).
4. The digital readout must now be set to zero.
See Section Digital Readout for procedure.
Note: Depending on the desired accuracy, you
may need to repeat this process when installing
different abrasive grits.
Belt Tension: To adjust conveyor belt tension,
first adjust take-up screw nut (A, Figure 15) using
the attached wrench (B, Figure 15). Do this on
both sides of conveyor to obtain approximately
equal tension on both sides of the belt when taut.
Insufficient belt tension will cause slippage of
conveyor belt on the drive roller during sanding
operation; the conveyor belt is too loose if it can
be stopped by hand pressure applied directly to
the top of the conveyor belt. Excessive belt
tension can result in bent rollers, bent brackets,
and/or premature wearing of the bronze roller
bushings or conveyor belt.
Belt Tracking: Belt tracking adjustments are
made while the conveyor belt is running. After the
proper belt tension is obtained, turn the conveyor
unit on and set it at the fastest speed setting.
Watch for a tendency of the conveyor belt to drift
to one side of the conveyor. To adjust the belt
tracking, tighten the take-up screw nut (A, Figure
15) on the side the belt is drifting toward, and
loosen the take-up screw nut on the opposite side.
Adjusting the take-up screw nuts on either side of
the conveyor allows belt tracking adjustments to
be made without affecting belt tension.
NOTE: Adjust the take-up screw nuts only 1/4 turn
at a time. Then allow time for the belt to react to
the adjustments before proceeding further. Try to
avoid over-adjustments.
Figure 14
Conveyor belt tension and tracking
Conveyor belt tension adjustment may be
necessary during the break-in period to
compensate for belt stretching.
IMPORTANT: The conveyor belt has been
loosened for shipping. Before operating sander,
adjust belt tension according to the following
instructions if necessary!
Figure 15
Conveyor belt replacement
1. Disconnect machine from power source, and
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unplug motor cord from control box receptacle.
2. Raise drum to highest position.
3. Loosen conveyor take-up screw nuts (A,
Figure 15) to relieve belt tension, and slide the
driven roller fully inward.
4. Remove the four bolts that attach conveyor
table to base. Lift up conveyor table and
remove it from machine.
5. Install new belt, and re-install conveyor table.
Tension and track the new belt.
Checking drum alignment
This sander was shipped from the factory preadjusted with the drums aligned to the conveyor
table. Unless the machine was stressed during
shipment, only fine adjustment should be
necessary. Minor alignment corrections can be
done without relieving belt tension or adjusting the
tension rollers, but should be done without any
abrasive strips attached.
First inspect the alignment with a thickness gauge.
The following procedure uses a steel straight
edge as a gauge.
1. Disconnect sander from power source.
2. Open dust cover and remove abrasive strips
from drums.
3. Place gauge on conveyor bed at inboard (right)
side (Figure 16).
Figure 17
Figure 16
4. With dust cover open, lower drum while slowly
rotating it by hand, until front drum lightly
contacts gauge. Raise or lower the rear drum
to a same height as the front drum by rotating
the rear drum height adjustment handwheel (F,
Figure 18) clockwise to raise it or counterclockwise to lower it.
5. Remove gauge and place at outboard (left)
side.
6. Then, holding up the front tension roller,
check at outboard (left) side of the front drum
to see that the drum is parallel to the table. If it
is not, alignment is necessary.
7. To align front drum, loosen the four socket
head button screws (A,B,C,D as shown in
Figure 17 and Figure 18) at front and rear of
outboard support bracket (left of the machine).
Note: Do not loosen any socket head button
screws at the inboard (right) side.
Figure 18
8. Finely raise or push down the outboard (left)
side of the drum carriage (E, Figure 17) to
achieve parallel alignment of the front drum.
The distance between the conveyor table and
both sides of the front drum should be the
same.
9. Re-tighten the four screws.
10. Before altering this drum carriage position,
also check to see that the rear drum is
likewise 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 from the rear of the
machine while holding up the rear tension
roller.
11. Adjustment of the rear drum is done by
loosening both the set screws (A, Figure 19)
located on the pinion (B, Figure 19) at
outboard side. This has to done thru
underneath the outboard support bracket.
12. Finely raise or lower the rear drum by rotating
the rear drum height adjustment handwheel to
achieve parallel alignment of the read drum.
13. Re-tighten both the set screws, aligning the
set screw to the flat of the shaft.
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