Jet Tools Sander M 628900 User Manual

Operating Instructions and Parts Manual  
Drum Sander  
Model: 10-20 PLUS  
(shown with optional accessories)  
WMH Tool Group  
2420 Vantage Drive  
Elgin, Illinois 60123  
Phone: 800-274-6848  
Part No.: M-628900  
Revision: B 11/03  
Copyright © WMH Tool Group  
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Table of Contents  
Warranty & Service....................................................................................................................................2  
More Information....................................................................................................................................2  
WMH Tool Group Warranty ...................................................................................................................2  
Table of Contents ......................................................................................................................................3  
Introduction................................................................................................................................................6  
Specifications ............................................................................................................................................6  
Grounding Instructions ..............................................................................................................................7  
115 Volt Operation.................................................................................................................................7  
Contents of the Shipping Carton ...............................................................................................................8  
Unpacking..................................................................................................................................................8  
Assembly and Setup..................................................................................................................................8  
Performax 10-20 Accessories................................................................................................................8  
On/Off Switch.........................................................................................................................................9  
Switch Lock ........................................................................................................................................9  
Circuit Breaker .......................................................................................................................................9  
Conveyor Belt Tracking........................................................................................................................11  
Conveyor Belt Tension.........................................................................................................................11  
Drum Height Control ............................................................................................................................11  
Checking Drum Alignment...................................................................................................................12  
Aligning the Drum ................................................................................................................................12  
Fine Tuning Drum Alignment...............................................................................................................12  
Wrapping Abrasive Strips ....................................................................................................................13  
Using the TUF ToolTM ..........................................................................................................................14  
Connecting Sander to a Dust Collector ...............................................................................................15  
Setting the Depth Gauge .....................................................................................................................15  
Setting the Depth of Cut.......................................................................................................................15  
Establishing the Proper Drum Height ..................................................................................................15  
Abrasives.................................................................................................................................................16  
Selecting Drum Abrasives....................................................................................................................16  
Selecting Abrasive Grits.......................................................................................................................16  
Cleaning Abrasive Strips......................................................................................................................16  
Stretching Abrasive Life.......................................................................................................................16  
Performax 10-20 Abrasives .................................................................................................................17  
Ready-to-Wrap.................................................................................................................................17  
Ready-to-Cut (Aluminum oxide).......................................................................................................17  
Ready-to-Cut “Blue” (longer life) ......................................................................................................17  
Stock Feeding Angle ...............................................................................................................................17  
Multiple-Piece Sanding Runs ..................................................................................................................17  
Edge Sanding..........................................................................................................................................17  
Sanding Imperfect Stock .........................................................................................................................17  
Face Frames and Raised Panel Doors ...................................................................................................17  
Monthly Maintenance ..............................................................................................................................17  
Conveyor Belt Replacement................................................................................................................18  
Tension Roller Alignment.....................................................................................................................18  
Tension Roller Pressure Adjustment ...................................................................................................18  
Drum Height Control Adjustment.........................................................................................................18  
Troubleshooting Guide ............................................................................................................................19  
Exploded View – 10-20 PLUS Sander ....................................................................................................20  
Parts List for the 10-20 PLUS Sander .................................................................................................21  
Wiring Diagram........................................................................................................................................23  
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Warnings  
1. Read and understand the entire owners manual before attempting assembly or operation.  
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply  
with all of these warnings may cause serious injury.  
3. Replace the warning labels if they become obscured or removed.  
4. This drum sander is designed and intended for use by properly trained and experienced  
personnel only. If you are not familiar with the proper and safe operation of a drum sander, do not  
use until proper training and knowledge have been obtained.  
5. Do not use this machine for other than its intended use. If used for other purposes, WMH Tool  
Group disclaims any real or implied warranty and holds itself harmless from any injury that may  
result from that use.  
6. Always wear approved safety glasses/face shields while using this machine. Everyday  
eyeglasses only have impact resistant lenses; they are not safety glasses.  
7. Before operating this machine, remove tie, rings, watches and other jewelry, and roll sleeves up  
past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear is  
recommended.  
8. Wear ear protectors (plugs or muffs) during extended periods of operation.  
9. This drum sander is to be used with wood and wood products only. Use of this drum sander and  
a dust collector with metal products is a potential fire hazard.  
10. Some dust created by power sanding, sawing, grinding, drilling and other construction activities  
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some  
examples of these chemicals are:  
Lead from lead based paint.  
Crystalline silica from bricks, cement and other masonry products.  
Arsenic and chromium from chemically treated lumber.  
Your risk of exposure varies, depending on how often you do this type of work. To reduce your  
exposure to these chemicals: work in a well-ventilated area and work with approved safety  
equipment, such as face or dust masks that are specifically designed to filter out microscopic  
particles.  
11. Do not operate this sander while tired or under the influence of drugs, alcohol or any medication.  
12. Make certain the switch is in the OFF position before connecting the machine to the power  
supply.  
13. Always sand with the grain of the wood.  
14. Always feed stock against the rotation of the drum.  
15. Do not sand pieces of material that are too small to be safely supported.  
16. When sanding a large piece, provide additional support at table height.  
17. Always connect and use a dust collector to the drum sander while operating.  
18. Make certain the machine is properly grounded.  
19. Make all machine adjustments or maintenance with the machine unplugged from the power  
source.  
20. 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.  
21. Keep machine guards in place at all times when the machine is in use. If removed for  
maintenance purposes, use extreme caution and replace the guards immediately.  
22. Make sure the drum sander is firmly secured to the stand or bench before use.  
23. Check damaged parts. Before further use of the machine, 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.  
24. Provide for adequate space surrounding work area and non-glare, overhead lighting.  
25. Keep the floor around the machine clean and free of scrap material, oil and grease.  
26. Keep visitors a safe distance from the work area. Keep children away.  
27. Make your workshop child proof with padlocks, master switches or by removing starter keys.  
28. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play”  
are careless acts that can result in serious injury.  
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Warnings  
29. Stand to one side of the conveyor and make sure no one else is standing in line with the  
conveyor while feeding into the machine. The drum sander operates at high speed and should a  
part slip, it will exit the machine at a high rate of speed and may result in injuries to anyone  
standing directly in front of the infeed. (Keep the conveyor belt clean and check pin-roll  
adjustments). Maintain a balanced stance at all times so that you do not fall or lean against the  
sanding drum or other moving parts. Do not overreach or use excessive force to perform any  
machine operation.  
30. Use the right tool. Don’t 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 at the rate for which it was designed.  
31. Use recommended accessories; improper accessories may be hazardous.  
32. Maintain tools with care. Keep tools sharp and clean for the best and safest performance. Follow  
instructions for lubricating and changing accessories.  
33. Never brush away sawdust while the machine is running. Use the correct speed and feed for the  
tool. Be sure that the tool is the correct one for your operation.  
34. Never stand on a machine. Serious injury could occur if the machine tipped or if the sanding drum  
is unintentionally contacted.  
35. Never leave the machine running unattended. Turn the power off and don’t leave the machine  
until it comes to a complete stop.  
36. All doors should be closed, all panels replaced and other safety guards should be in place before  
the machine is started or operated.  
37. Keep your hands clear when feeding parts onto the conveyor. The part will be forced down as it  
begins to feed into the machine, causing a pinching action between the part and the table. Use  
caution! Hands should be clear of the stock and the table to avoid pinching. Never reach into a  
running machine. Turn off the electrical power and stop the machine before attempting to retrieve  
parts from within it. Keep your hands away from the sanding area. Contact with internal moving  
parts can result in the loss or injury to fingers, hands and arms.  
38. Remove loose items and unnecessary work pieces from the area before starting the machine.  
ADDITIONAL INFORMATION regarding the safe and proper operation of this product is available  
from the National Safety Council, 1121 Spring Lake Drive, Itasca, IL 60143-3201, in the Accident  
Prevention Manual for Industrial Operations and in the safety Data Sheets provided by the NSC.  
Please also refer to the American National Standards Institute ANSI 01.1 Safety Requirements for  
Woodworking Machinery and the U.S. Department of Labor OSHA 1910.213 Regulations.  
- - SAVE THESE INSTRUCTIONS - -  
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Introduction  
This manual is provided by Performax covering the safe operation and maintenance procedures for a Model  
10-20 Plus Drum Sander. This manual contains instructions on installation, safety precautions, general  
operating procedures, maintenance instructions and parts breakdown. This machine has been designed and  
constructed to provide years of trouble free operation if used in accordance to instructions set forth in this  
manual. If there are any questions or comments, please contact either your local supplier or WMH Tool  
Specifications  
Stock Number .....................................................................................................................................628900  
Max. Width (in).....................................................................................................................20 (Two Passes)  
Min. Length (in) .......................................................................................................................................2-1/4  
Max. Thickness (in)....................................................................................................................................... 3  
Min. Thickness (in)................................................................................................................................... 1/32  
Drum (in) ...............................................................................................................5 x 10 Extruded Aluminum  
Drum Speed (RPM)................................................................................................................................. 1700  
Dust Chute (in).............................................................................................................................................. 4  
Conveyor Motor.....................................................................................43 inch-lb Torque, Direct Drive, D.C.  
Conveyor Variable Feed Rate (FPM).......................................................................................................0-12  
Motor (TEFC) ................................................................................................................1 HP, 1Ph, 115V only  
Net Weight (lbs) .......................................................................................................................................... 74  
The specifications in this manual are given as general information only, and they are not binding. WMH  
Tool Group reserves the right to effect, at any time and without prior notice, changes or alterations to  
parts, fittings and accessory equipment deemed necessary for any reason whatsoever.  
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Grounding Instructions  
This tool must be grounded while in use to protect the operator from electric  
shock.  
In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric  
current to reduce the risk of electric shock. This tool is equipped with an electric cord having an  
equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet  
that is properly installed and grounded in accordance with all local codes and ordinances.  
Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified  
electrician.  
Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The  
conductor, with insulation having an outer surface that is green with or without yellow stripes, is the  
equipment-grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not  
connect the equipment-grounding conductor to a live terminal.  
Check with a qualified electrician or service personnel if the grounding instructions are not completely  
understood, or if in doubt as to whether the tool is properly grounded. Use only three wire extension cords  
that have three-prong grounding plugs and three-pole receptacles that accept the tool’s plug.  
Repair or replace a damaged or worn cord immediately.  
115 Volt Operation  
As received from the factory, your sander is ready to run at 115-volt operation. This sander, when wired  
for 115 volts, is intended for use on a circuit that has an outlet and a plug that looks the one illustrated in  
Figure A. A temporary adapter, which looks like the adapter as illustrated in Figure B, may be used to  
connect this plug to a two-pole receptacle, as shown in Figure B if a properly grounded outlet is not  
available. The temporary adapter should only be used until a properly grounded outlet can be installed by  
a qualified electrician. This adapter is not applicable in Canada. The green colored rigid ear, lug, or  
tab, extending from the adapter, must be connected to a permanent ground such as a properly grounded  
outlet box, as shown in Figure B.  
The use of an extension cord is not recommended. However, if you must use one make sure your  
extension cord is in good condition. Be sure to use one heavy enough to carry the current your machine  
will draw. An undersized cord will cause a drop in the line voltage resulting in power loss and overheating.  
The following table shows the correct size to use depending on the cord length needed and the  
nameplate ampere rating. If in doubt, use the next heavier gauge. Remember, the smaller the gauge  
number, the heavier the cord.  
Volts  
120V  
Total Length of Cord in Feet  
50 100 150  
AWG  
25  
14  
12-16  
Amps  
12  
Not Recommended  
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Contents of the Shipping Carton  
1.  
1.  
1.  
1.  
1.  
1.  
1.  
1.  
Sander Assembly  
Handwheel with Handle  
TUF Tool  
Abrasive Strip (wrapped on the drum)  
Conveyor Belt (attached to the base)  
Owner's Manual  
Warranty Card  
Hardware Bag (for attaching the Sander  
to the Optional Open Stand) —  
containing:  
4.  
4.  
3/8”-16x5/8” Hex Cap Screws  
3/8” Flat Washers  
Read and understand the  
entire contents of this manual  
before attempting assembly or  
operation of this drum sander.  
Failure to comply may cause  
serious injury.  
Unpacking  
1. Remove all the contents from the  
shipping carton.  
Performax 10-20 Accessories  
2. Report any damage to your distributor.  
Stock #  
638004  
608005  
98-0130  
60-0505  
Description  
3. Do not discard any shipping material  
until the sander has been assembled  
and is running properly.  
Open Stand with Shelf  
Infeed/Outfeed Tables  
Caster Set (4) for Open Stand  
Abrasive cleaning stick  
Assembly and Setup  
If you purchased the optional Performax 10-20  
Stand, refer to its assembly instructions before  
proceeding with the drum and conveyor  
assembly. Note: The figures shown in this  
manual may display the Performax 10-20-Plus  
Drum Sander with several optional accessories.  
To purchase any of these accessories contact  
your dealer.  
A
1. Attach the handwheel (Figure 1, Item A)  
to the height adjustment screw and  
tighten.  
Figure 1  
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On/Off Switch  
Before powering up the unit,  
make sure all of the tools  
used to assemble and adjust  
the unit are removed and  
accounted for. Make sure  
your hands, loose clothing  
and any other items that may  
get caught are safely away  
from the unit.  
The On/Off Switch (Figure 2, Item A) is located  
on the front of the sander. To turn the sander on,  
pull the switch to the on position. To turn the  
sander off, push the switch to the off position.  
Switch Lock  
The sander can be locked from unauthorized  
use by locking the switch. To lock the switch:  
1. Turn the switch to the off position and  
disconnect the sander from the power  
source.  
B
A
C
2. Pull the key (Figure 2, Item B) out. The  
switch cannot be turned on with the key  
removed.  
Figure 2  
Should the key be removed  
from the switch in the on  
position, the switch can be  
turned off but cannot be  
turned back on.  
3. To replace the key, slide the key into the  
slot on the switch until it snaps.  
Circuit Breaker  
The sander is equipped with a motor protective  
device (circuit breaker). The breaker will  
automatically shut the sander off when  
excessive current is consumed.  
If the breaker is tripped, turn the sander off and  
reset the circuit breaker by pressing the button  
(Figure 2, Item C).  
Be sure to turn the sander off  
before resetting the circuit  
breaker  
to  
avoid  
unintentionally starting the  
sander  
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Conveyor Belt Tracking  
Belt tracking adjustment may be necessary  
during the break-in period and normal operation  
to compensate for belt stretching.  
A
Abrasive belt tension must be properly adjusted  
before adjusting the tracking. Adjust the belt  
tracking while the conveyor belt is running at its  
fastest speed.  
C
B
Tighten the hex nut (Figure 5, Item B) on the  
side the belt is drifting towards, and loosen the  
hex nut on the opposite side. Use the attached  
wrenches (Figure 5, Item C) to adjust the hex  
nuts.  
Note: Adjustment should be made in 1/4 turns of  
the hex nut. Allow time for the belt to react to the  
adjustment. Do not over adjust.  
Figure 5  
Conveyor Belt Tension  
Conveyor belt tension adjustment may be  
necessary during the break in period to  
compensate for belt stretching.  
If the conveyor belt can be stopped by hand  
pressure applied directly to the top of the  
conveyor bed, the belt is too loose. Insufficient  
belt tension will cause slippage of the conveyor  
belt on the drive roller during sanding  
operations.  
Excessive belt tension can cause tracking  
problems and result in bent rollers, bent take-up  
brackets and premature conveyor belt wear.  
Adjust the hex nuts (Figure 5, Item B) on both  
sides of the conveyor to obtain a tight, and  
equally tensioned, conveyor belt. Use the  
attached wrenches (Figure 5, Item C) to adjust  
the hex nuts.  
Drum Height Control  
Drum height is controlled by the height  
adjustment handle (Figure 5, Item A). Turning  
the handwheel in a counterclockwise direction  
lowers the drum.  
Turning the height adjustment handwheel one  
revolution lowers the drum approximately 1/16”.  
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Turn the board 180 degrees and sand the same  
side without changing the sanding height.  
Checking Drum Alignment  
The sanding drum comes preset from the  
factory. If a problem with the drum alignment  
occurs, follow the instructions listed below.  
If a ridge is visible where the drum overlaps,  
loosen the two hex cap bolts (Figure 7, Item C)  
and turn the adjusting knob (Figure 7, Item D)  
slightly. Turn the adjusting knob clockwise to  
lower the outboard end of the drum and  
counterclockwise to raise it. Tighten the two hex  
cap bolts. Repeat this process until the ridge is  
gone and the entire board is sanded.  
1. Lift the knob (Figure 6, Item A) to open the  
dust cover and remove the abrasive strip. If  
you are unsure how to do this, see the  
“Wrapping Abrasive Strips” section in this  
manual.  
2. Using a metal straight edge, or ruler, as a  
thickness gauge (Figure 6, Item B), insert  
the gauge between the drum and the  
conveyor bed on the outer end of the drum.  
3. Open the dust cover and lower the sanding  
drum while slowly rotating the drum by hand  
until the drum lightly contacts the thickness  
gauge.  
A
B
4. Remove the thickness gauge and place it  
under the drum at the opposite end. If the  
drum does not contact the thickness gauge  
to the same degree as the other end of the  
drum, alignment is necessary.  
Aligning the Drum  
1. Loosen the two hex cap bolts (Figure 7, Item  
C).  
Figure 6  
2. Lay the thickness gauge under the drum  
lengthwise.  
3. Adjust the knob, (Figure 7, Item D) until the  
drum contacts the gauge equally along its  
entire surface. Turn the adjusting knob  
clockwise to lower the outboard end of the  
drum, and counterclockwise to raise the  
outboard end of the drum.  
D
4. When the drum is parallel to the conveyor,  
tighten the two hex cap bolts.  
C
Fine Tuning Drum Alignment  
When sanding boards wider than the drum,  
drum alignment is critical and must be adjusted  
slightly higher on the outboard end. This will  
prevent any ridges from developing in the stock.  
Always check it on a piece of scrap wood, as  
follows, before sanding the work piece.  
Figure 7  
Run a piece of scrap wood approximately 6”  
wide by 16” to 18“ long through the sander  
sideways so that the end of the board extends  
past the end of the drum.  
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Wrapping Abrasive Strips  
Note: When using Performax “Ready to Wrap”  
and “Ready to Cut” abrasives, not all of the  
steps below are necessary. You can use the  
original abrasive belt that came with the sander  
as a template for cutting your own strips.  
1. Mark and cut a taper at one end of the  
roll, as shown in Figure 8.  
Figure 8  
Figure 9  
Figure 10  
2. Square off the end of the taper, as  
shown in Figure 8.  
A
3. Squeeze the fastener lever (Figure 9,  
Item A) on the outboard end of drum,  
and insert the tapered end of the  
abrasive (Figure 9, Item B) so that it  
uses most of the width of the slot.  
Release the fastener lever to securely  
hold the strip end to the fastener.  
4. The square edge of the abrasive strip  
should follow the edge of the drum, as  
shown in Figure 9.  
B
5. Wrap the abrasive strip around the  
drum, being careful not to overlap the  
windings, as shown in Figure 10.  
6. Mark the trailing end of the strip where it  
crosses the inboard end of drum (Figure  
11, Item C).  
7. Remove the abrasive strip and cut a  
taper as was done with the starting  
edge, (See Figure 8). Note: The taper  
on the remaining roll can be used as the  
taper for the starting edge of the next  
strip to be cut.  
8. Rewrap the drum starting at the left side  
as described in steps 3-5.  
9. Squeeze the fastener lever on the  
inboard end of the drum, and insert the  
tapered end of the abrasive strip  
through the slot into the take-up  
fastener.  
Position the abrasive strip  
with sufficient room between  
the inside of the slot and the  
tapered end of the strip to  
allow it to be pulled into the  
drum as needed, (See Figure  
12).  
C
Figure 11  
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Using the TUF ToolTM  
The Tuf Tool (Figure 13)  
can also be used to hold  
the take-up fastener in  
place while you feed the  
sandpaper through the  
slot.  
Figure 13  
1. Clip the sandpaper into the outboard  
fastener. Wrap the drum, being careful  
not to overlap the windings. Hold the  
sandpaper over the inboard slot with the  
left hand.  
Figure 12  
2. Hold the TUF Tool with the red end of  
the tool pointing away from you (Figure  
14). Insert the hook into the hole in the  
end of the take-up lever of the fastener  
(Figure 14).  
3. Lift the lever with the TUF Tool, pulling  
the lever up until it touches the inside of  
the drum. Turn the TUF Tool  
counterclockwise and lower it onto the  
sandpaper, making sure it is holding the  
sandpaper tight and opening the throat  
of the fastener (Figure 15).  
Figure 14  
4. Insert the tapered end of the paper into  
the slot and the fastener. It may be  
necessary to trim the tapered end of the  
paper so it does not “bottom out” against  
the inside of the drum. Be sure to leave  
a gap of at least 1/8” between the  
tapered strip and the closed end of the  
slot to allow the strip to be pulled into  
the fastener as needed (Figure 15). If  
necessary trim the outside edge of the  
paper.  
5. Hold the sandpaper in place with your  
left hand. Rotate the drum toward you  
slightly. Pull up on the TUF Tool and  
turn the handle clockwise while  
maintaining upward pressure. Slowly  
move the TUF Tool away from you  
slightly, then down, while easing it out of  
the hole. This releases the lever into its  
proper position. (Figure 16).  
Figure 15  
All abrasive strips will stretch with use and may  
stretch enough to allow the take-up lever to  
reach its lowest position so it cannot maintain  
tension on the strip. If this occurs, follow the  
above procedures to reset the take-up lever.  
Figure 16  
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Connecting Sander to a Dust Collector  
Establishing the Proper Drum Height  
Dust collection is necessary for all drum  
sanders. The Performax 10-20 is equipped with  
a 4” dust collection port in the back of the dust  
cover, and is designed to be used with a  
standard dust collector as shown in Figure 17.  
To establish the proper drum height, place the  
board to be sanded under the drum and lower  
the drum until it just touches the board. Note:  
The sanding drum should still rotate by hand.  
Without changing the drum height, finish feeding  
the stock under the sander. Start the sanding  
drum and sand the board at that same position.  
JET offers a variety of Dust Collectors and Air  
Filtration Units that will work nicely with your  
new sander. Contact your local distributor for  
more information.  
Setting the Depth Gauge  
The depth gauge indicates the distance from the  
bottom of the drum to the top of the conveyor.  
1. Lower the drum, with the sandpaper  
installed, until it touches the conveyor.  
2. Loosen the screw (Figure 18, Item B).  
3. Adjust the pointer (Figure 18, Item C) to  
read zero and tighten the screw.  
Figure 17  
Note: depending on the desired accuracy, you  
may need to repeat this process when installing  
different sandpaper grits.  
B
Setting the Depth of Cut  
Adjusting the Performax 10-20 for proper  
contact between the abrasive and the stock is  
the most important set-up procedure before  
operating the sander. It may take some  
experimentation to determine the proper depth  
of cut, given the variables of abrasive grit and  
types of wood. For best results, use scrap wood  
to practice sanding and to develop your skills  
and familiarity with the machine before doing  
any finish work.  
C
A good rule of thumb when sanding with grits  
finer than 80 is lower the drum so that it contacts  
the work piece but can still be rotated by hand.  
When using grits coarser than 80 grit, you can  
lower the drum slightly more. However, a  
combination of several variables will determine  
the proper depth of cut to use, including the  
following:  
Figure 18  
Abrasive type and grit size.  
Width of the piece being sanded.  
Hardness of the piece being sanded.  
Feed rate of the piece being sanded.  
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pass, whether you are doing abrasive planing,  
cleaning up glued panels or flattening stock.  
Grits from 100 through 220 are primarily  
finishing 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.  
Abrasives  
The abrasive material you choose will have a  
substantial effect on the performance of your  
sander. Variations in paper type, weight, coating  
and durability all contribute to achieving your  
desired finish. For the best sanding results,  
Performax offers premium abrasives that have  
been tested and certified for lowest overall cost  
and maximum performance. Genuine Performax  
abrasives are available in pre-cut “Ready- to-  
Wrap” lengths or in the convenient pre-marked  
“Ready-to-Cut” box.  
For fine work, such as furniture, try not to skip  
any grit grades during the sanding process. In  
general, premium quality abrasives such as  
genuine Performax abrasives will produce a  
better finish with a less noticeable scratch  
pattern. Note: Grits that are too fine can  
sometimes burnish the wood and leave a glossy  
surface that will not accept stains evenly. This  
will vary by the type of wood. Oak, for example,  
is susceptible to burnishing because of its open  
pores.  
Selecting Drum Abrasives  
To achieve maximum sanding results, it is  
important to select the proper grit of abrasive for  
the type of sanding being performed. As with  
any sanding operation, first begin sanding with a  
coarser grit, depending on the roughness of the  
stock, or the amount of stock to be removed.  
Then progressively work toward finer grits. The  
chart below shows the general uses for the  
various grits. Performax offers strip rolls in the  
nine different abrasive grits shown.  
Cleaning Abrasive Strips  
A sandpaper cleaning stick may be used to  
remove deposits and help extend sandpaper life.  
To use, operate the sanding drum with the dust  
cover open.  
For your own safety, always  
wear eye protection while  
performing  
cleaning,  
sandpaper  
take all  
and  
Grit  
Common Application  
precautions to avoid any  
contact of hands or clothing  
with uncovered drums. Hold  
the cleaning stick against the  
rotating drum and move it  
along the drum surface. It is a  
good idea to use a shop brush  
or air nozzle to remove any  
cleaning stick crumbs from  
the drums before resuming  
sanding operations.  
Abrasive planing, surfacing rough-  
24 Grit  
sawn  
removal, glue removal.  
Abrasive planing, surfacing rough  
sawn boards, maximum stock  
removal, glue removal.  
boards,  
maximum  
stock  
36 Grit  
Surfacing and dimensioning boards,  
truing warped boards  
60 Grit  
80 Grit  
100 Grit  
Surfacing,  
light  
dimensioning,  
removing planer ripples.  
Light surfacing, removing light planer  
ripples.  
Cloth-backed abrasives can be cleaned by  
soaking in paint thinner or mineral spirits for 20  
minutes to one hour. Then use a nylon brush to  
remove any buildup.  
120 Grit Light surfacing, minimal stock removal.  
150 Grit Finish sanding, minimal stock removal.  
Finish sanding only, not for stock  
removal.  
180 Grit  
Finish sanding only, not for stock  
220 Grit  
removal.  
Stretching Abrasive Life  
Abrasive life can also be increased by removing  
the abrasive strip from the drum and reversing it.  
To do this, remove the strip and use what was  
the trailing end as the starting end on the left  
(outboard) side of the drum. Reversing the strip  
will provide a fresh set of cutting edges on the  
drum.  
Selecting Abrasive Grits  
The amount of stock to be removed is a major  
consideration when choosing the grit grade to  
start with. Grits of 24, 36, 50, 60 and 80 are  
primarily designed for stock removal. Grits of 24  
and 36 will remove the most material in one  
16  
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good procedure to stack and clamp several  
pieces together to prevent them from slipping, or  
tipping.  
Performax 10-20 Abrasives  
“Ready-to-Wrap” 24-220 Grit contains six pre-  
cut wraps.  
Sanding Imperfect Stock  
Ready-to-Wrap  
60-1024............24 Grit 60-1120............120 Grit  
60-1036............36 Grit 60-1150............150 Grit  
60-1060............60 Grit 60-1180............180 Grit  
60-1080............80 Grit 60-1000............220 Grit  
60-1100............100 Grit  
When sanding stock with a cup or crown, place  
the crown up. This will stabilize the stock to help  
prevent tipping or rocking during sanding. (After  
the crown has been removed and the top is flat,  
turn the stock over and sand the opposite side.)  
To avoid personal injury, take special care when  
sanding stock that is twisted, bowed or  
otherwise varies in thickness from end to end. If  
possible, support such stock as it is being  
sanded to keep it from slipping, or tipping. Use  
extra roller stands, help from another person, or  
hand pressure on the stock to minimize  
potentially hazardous situations.  
Ready-to-Cut (Aluminum oxide)  
60-9036............36 Grit 60-9120............120 Grit  
60-9060............60 Grit 60-9150............150 Grit  
60-9080............80 Grit 60-9180............180 Grit  
60-9100............100 Grit60-9220............220 Grit  
Ready-to-Cut “Blue” (longer life)  
60-8024............24 Grit 60-8080............80 Grit  
60-8036............36 Grit 60-8100............100 Grit  
60-8050............50 Grit 60-8120............120 Grit  
60-8060............60 Grit  
Face Frames and Raised Panel Doors  
It is very important to have the proper abrasive  
contact when doing this type of sanding. If the  
sander is set to take an excessive depth of cut,  
the result can 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 problem, make sure that when  
using abrasives finer then 80 grit, the drum is in  
contact with the wood but can still be spun by  
hand.  
Stock Feeding Angle  
The optimum stock feeding angle, when  
sanding, is at a 60-degree angle. However, even  
a slight stock feeding angle will provide more  
effective stock removal, less loading of  
abrasives, longer abrasive life, potentially faster  
feed rates and reduced motor loads.  
Monthly Maintenance  
When finish sanding, the work piece should be  
fed through in line with the grain on the final one  
or two passes for the optimum finish.  
For best results, perform the following  
recommended maintenance procedures on a  
monthly basis:  
Multiple-Piece Sanding Runs  
Lubricate the conveyor bushings and  
check for wear.  
When abrasive planing (or thickness sanding) a  
run of similar pieces that you want to have the  
same thickness, it is best to sand all the pieces  
at the same time. This way you will be able to  
determine the thickness of the thinnest piece  
and process all pieces to that same thickness.  
Be aware that the sander will remove cups and  
crowns in the work piece; consider this when  
measuring the processing stock to the same  
thickness.  
Lubricate all moving parts, such as  
threaded rods, washers and bushings.  
Clean the sawdust from the conveyor  
belt and sanding drum.  
Blow the dust from the motors and  
switches. Blow the dust from the inside  
of the sanding drum to prevent vibration.  
Be careful not to disturb the drum  
balancing weights.  
Edge Sanding  
When edge sanding, the Performax sander will  
mimic the opposite edge of the stock which is  
lying on the conveyor belt. Because of this, it is  
important for the stock edge to have been ripped  
at 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, it is  
Check all the setscrews for tightness on  
parts such as bearings, the conveyor  
and couplings.  
17  
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Conveyor Belt Replacement  
Drum Height Control Adjustment  
To replace the conveyor belt:  
If the height control mechanism does not  
operate easily or smoothly, or there is excessive  
vertical movement of the drum carriage, perform  
the following adjustments.  
1. Disconnect the machine from the power  
source.  
1. To reduce the handwheel backlash, tighten  
the locknut on the height adjustment screw  
(Figure 21, Item J).  
2. Raise the drum to its highest position using  
the handwheel (Figure 19, Item A).  
3. Remove the belt tension by loosening both  
take-up nuts (Figure 19, Item B).  
2. Thoroughly lubricate all mating surfaces and  
height adjustment screw (Figure 21, Item K).  
4. Unscrew the three screws (Figure 19, Item  
C) that attach the conveyor to the bracket.  
A
5. Unbolt the two hex head bolts (Figure 19,  
Item D) that hold the bracket to the bench or  
stand.  
B
6. Slide the conveyor belt off the conveyor and  
replace it with a new belt.  
C
7. Reverse the procedure for installation.  
D
Tension Roller Alignment  
1. Remove the abrasive strip (Figure 20 Item  
E) from the drum.  
Figure 19  
2. Loosen the two bearing hex nuts (Figure 20,  
Item F) on the outboard side of the drum  
and two cap screws on the inboard side  
(Figure 20, Item G).  
F
F
E
3. This will allow the tension rollers to drop to  
their lowest position.  
4. Lower the sanding drum so that it just  
touches the conveyor bed.  
E
5. Turn the drum height handle one complete  
revolution to raise the drum.  
H
H
6. Retighten the bearing hex nuts and the cap  
screws.  
Figure 20  
Tension Roller Pressure Adjustment  
You can also adjust the spring-loaded screws  
(Figure 20, Item H) found on the pressure roller  
brackets, to increase or decrease roller  
pressure. If you are getting snipe marks at the  
leading end of the board adjust the outfeed roller  
pressure. If the snipe marks occur on the trailing  
end of the board, adjust the infeed roller  
pressure.  
K
J
K
18  
Figure 21  
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Troubleshooting Guide  
Possible Cause  
Problem  
Conveyor belt does not  
move.  
Solution  
Shaft coupler is not attached.  
Attach the shaft coupler.  
Shaft coupling is loose.  
Align the shaft flats of the gear motor  
and the drive roller and tighten the  
shaft-coupling setscrews.  
1. Remove the slack in the strip.  
2. Read the section on wrapping  
abrasive strips.  
Conveyor rollers run  
intermittently.  
1. Slack in abrasive strip on drum.  
2. Abrasive improperly wrapped.  
Abrasive strip comes off  
drum.  
1. Strip caught on inside edge of  
slot, or on inboard side of drum.  
2. Strip not cut properly.  
1. Re-adjust the strip end in the slot  
and/or trim the abrasive edge.  
2. Re-cut and re-install the abrasive  
strip.  
Abrasive strip is loose.  
1. Excessive depth of cut.  
2. Excessive feed rate.  
3. Inadequate dust collection.  
4. Inadequate abrasive.  
1. Inconsistent feed rate.  
1. Reduce the depth of cut.  
2. Use a slower feed rate.  
3. Increase airflow at the dust ports.  
4. Use an open-coat abrasive.  
1. Do not stop or change the feed  
rate.  
Abrasive loads up  
prematurely.  
Line or groove in stock.  
1. Abrasive strip is overlapped.  
2. Excessive depth of cut.  
3. Excessive depth of cut for fine  
grit.  
1. Re-wrap the abrasive strip.  
2. Reduce the depth of cut.  
3. Use a coarser grit or reduce the  
depth of cut.  
Wood burns.  
4. Feed rate is too slow.  
5. Abrasive is loaded.  
6. Worn abrasives.  
1. Tension rollers are too high.  
2. Excessive feed rate.  
3. Dirty or worn conveyor belt.  
1. Improper conveyor belt tension.  
2. Excessive depth of cut.  
3. Excessive feed rate.  
4. Increase the feed rate.  
5. Clean the abrasives.  
6. Replace the abrasives.  
1. Lower the tension rollers.  
2. Reduce the feed rate.  
3. Replace the conveyor belt.  
1. Adjust the belt tension.  
2. Reduce the depth of cut.  
3. Reduce the feed rate.  
A1. Conveyor belt slipping, see  
above.  
Board slips on conveyor  
belt.  
Sander motor slows or  
stalls  
Rippled sanded surface  
A. Non-uniformly  
spaced ripples.  
A. Uneven feed rate.  
A2. Board slips on conveyor, see  
above.  
A3. Power feed gear motor stalls,  
see above.  
B. Uniformly spaced  
ripples.  
B. Conveyor bed flexing or  
vibration.  
B1. Reduce the depth of cut.  
B2. Reduce the feed rate.  
B3. Check for loose bolts, shaft-  
coupling setscrews or out of  
balance drum.  
1. Inconsistent feed rate.  
1. Maintain constant feed rate (by  
hand).  
2. Stock slipping on conveyor.  
2. Excessive depth of cut  
(PowerFeed) or inadequate hold  
down pressure.  
Gouging of the wood.  
Snipes  
3. Work piece not properly  
supported.  
1. Improper tension on rollers  
3. Add work supports for long work  
pieces.  
1. See tension roller adjustment.  
1. Excessive load on sanding drum 1. Allow motor to cool and reset  
and motor.  
2. Too many tools on circuit.  
overload button.  
Motor overload  
protector trips or shop  
wiring breaker trips.  
2. Have a certified electrician  
correct the shop-wiring problem.  
3. Use a shorter, heavier gauge  
extension cord.  
3. Excessive length or inadequate  
size extension cord.  
19  
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Exploded View – 10-20 PLUS Sander  
20  
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Parts List for the 10-20 PLUS Sander  
Item  
No.  
1
2
3
4
5
6
7
Part No.  
Description  
Size  
Qty  
1020-101  
1020-102  
TS-0680031 Flat Washer  
1020-104  
1020-105  
TS-0680061 Flat Washer  
1020-107  
1020-108  
TS-0267051 Set Screw  
Handwheel, Height Adjustment  
Socket Head Button Screw  
1
2
8
1
1
1
1
1
2
1
1
2
1
1
7
1
1
4
4
1
2
2
1
1
1
1
2
4
6
4
4
1
2
2
2
2
2
1
1
1
1
2
1
7
1
1
4
6
3
1
1
1
5/16-18UNCx3/4  
5/16  
Main Support  
Lock Nut  
1/2-20UNF  
1/2  
Nylon Washer  
Washer, Oilite  
8
9
1/4-20UNCx1/2  
10 1020-110  
11 1020-111  
12 1020-112  
13 1020-113  
14 1020-114  
15 TS-081B03  
16 1020-116  
17 1020-117  
18 1020-118  
19 TS-0720071 Lock Washer  
20 50-3089  
21 TS-0152011 Bolt, Carriage Head  
22 TS-0561021 Hex Nut  
23 60-0310-P  
24 20-0778  
25 1020-125  
26 1020-126  
27 1020-127  
28 TS-0208041 Socket Head Cap Screw  
29 TS-0720081 Lock Washer  
30 10-4008-16 Screw, Fillister Head-Phillip  
Bracket, Drum Height Control  
Height Adjusting Screw  
Bushing, Oilite  
Slide Plate, Motor Mount  
Arm  
Pan Head Machine Screw  
Dust Cover  
Plate, Outboard  
#8-32UNCx1/2  
Hex Socket Round Head Screw  
1/4-20UNCx3/4  
1/4  
Bearing Assembly, Drum  
5/16-18UNCx1  
5/16-18UNC  
Conveyor Belt  
Retaining Ring  
Drum  
STW25  
Main Coupler  
Socket Head Cap Screw  
#8-32UNCx3/8  
5/16-18UNCx3/4  
5/16  
#8-32UNCx1  
31 20-3211  
32 40-0304  
Spring, Tension Rollers  
Bracket, Tension Rollers  
33 40-0308-01 Bracket, Right Tension Roller Suspension  
34 40-0308-02 Bracket, Left Tension Roller Suspension  
35 80-1060  
36 1020-136  
Pad, Bracket-Tension Roller  
Roller, Tension  
37 TS-0208021 Socket Head Cap Screw  
5/16-18UNCx1/2  
38 1020-138  
39 1020-139  
40 1020-140  
41 1020-141  
42 1020-142  
43 1020-143  
44 50-3105  
45 1020-145  
46 1020-146  
47 TS-0733041 Lock Washer, External Tooth  
48 TS-0561011 Hex Nut  
49 TS-0813021 Screw  
50 1020-150  
51 1020-151  
52 1020-152  
Motor Cord  
Bracket, Inboard Tension Roller  
Rod, Side Plate  
Rod, Square-Slide Plate  
Conveyor adjusting screw  
Bracket, Right Take-Up  
Bushing, Oilite  
...  
Driven Roller  
Bracket, Left Take-Up  
1/4  
1/4-20UNC  
1/4-20UNCx3/8  
Foot Plate  
Drive Roller Support  
Drive Roller  
21  
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Parts List for the 10-20 PLUS Sander  
Item  
No.  
Part No.  
Description  
Size  
Qty  
53 10-4010-04 Set Screw  
54 1020-154 Guide Plate  
55 10-4010-08 Socket Head Cap Screw  
#10-32UNFx1/4  
1
1
4
1
1
1
1
5
2
1
1
1
1
1
2
1
1
1
2
1
1
1
4
1
2
1
2
1
1
4
1
2
1
2
2
2
2
1
1
6
1
4
4
#10-32UNFx1/2  
56 3237359  
57 1020-157  
58 72-2004  
59 1020-159  
60 1020-160  
61 12-9001  
62 72-6101  
63 1020-163  
64 73-1255  
65 80-3137  
66 1020-166  
67 20-0775  
68 1020-168  
69 1020-169  
70 1020-170  
Conveyer Gear Motor  
Cover, Base-Control Housing  
Switch, On/Off-Drum  
Overload  
Pan Head Machine Screw  
Lock Nut  
Strain Relief, DC-Motor Cord  
Base Assembly  
Controller, Conveyer-Variable Speed  
Knob, Dust Cover  
Dust Hood, Door  
Hinge Pin  
Dust Hood, Hinge  
Needle, Depth Gauge  
Round Head Machine Screw  
#10-32UNFx1/2  
#6-32UNC  
6N-4  
#10-24UNCx3/8  
3/16SQx3/4”  
71 20-0762-02 Key  
72 1020-172  
73 1020-173  
74 1020-174  
75 1020-175  
76 1020-176  
77 1020-177  
78 94-1670  
79 1020-179  
80 21-1173  
81 1020-181  
Main Drum Motor  
Spring  
Adjustment Bracket  
Socket Head Button Screw  
Power Cord  
Strain Relief, Power Cord and Motor Cord 6N3-4  
Label, Depth Gauge  
Socket Head Button Screw  
Fastener, Abrasive-Outboard  
Knob, Adjusting  
5/16-24UNFx1/2  
5/16-18UNCx1/2  
82 TS-0207041 Socket Head Cap Screw  
1/4-20UNCx3/4  
1/4-20UNCx1/4  
83 1020-183  
84 1020-184  
85 80-3131  
86 40-0260  
88 1020-188  
Label, Height-Direction  
Set Screw  
Knob, 2 pc Swivel Handle  
Wrench  
Shoulder Screw  
89 TS-0733061 Lock Washer, External Tooth  
90 10-4009-06 Flat Head-Machine Screw  
3/8  
#6-32UNCx3/8  
6P3-4  
91 1020-191  
92 21-1172  
Strain Relief  
Fastener, Abrasive-Inboard  
93 TS-0680042 Flat Washer  
94 1020-194 Machine Screw  
95 TS-0680011 Flat Washer  
96 1020-196 Hex Head Screw  
3/8  
1/4-20UNCx5/8  
3/16  
3/8-16UNCx5/8  
22  
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Wiring Diagram  
23  
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WMH Tool Group  
2420 Vantage Drive  
Elgin, Illinois 60123  
Phone: 800-274-6848  
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