WMH Tool Group PERFORMAX 22-44 Plus User manual

OWNER'S MANUAL
22-44 Plus Drum Sander
(shown with optional accessories)
WMH TOOL GROUP
2420 Vantage Drive
Elgin, IL 60123
Phone: [phone] Part No.: M-649003K
Fax: [phone] Revision: B
www.wmhtoolgroup.com Copyright © WMH Tool Group

2
This manual has been prepared for the owner and operators of a 22-44 PLUS Drum Sander. Its purpose,
aside from machine operation, is to promote safety using accepted operating and maintenance
procedures. To obtain maximum life and efficiency from your Drum Sander and to aid in using it safely,
please read this manual thoroughly and follow instructions carefully.
Warranty & Service
WMH Tool Group warrants every product it sells. If one of our tools needs service or repair, one of our
Authorized Repair Stations located throughout the United States can provide quick service or information.
In most cases, a WMH Tool Group Repair Station can assist in authorizing repair work, obtaining parts, or
perform routine or major maintenance repair on your Performax product.
For the name of an Authorized Repair Station in your area, please call 1-888-594-5866, or visit our web
site at www.wmhtoolgroup.com
More Information
Remember, WMH Tool Group is consistently adding new products to the line. For complete, up-to-date
product information, check with your local WMH Tool Group distributor, or visit our web site at
www.wmhtoolgroup.com
WMH Tool Group Warranty
WMH Tool Group makes every effort to assure that its products meet high quality and durability standards
and warrants to the original retail consumer/purchaser of our products that each product be free from
defects in materials and workmanship as follows: 1 YEAR LIMITED WARRANTY ON ALL PRODUCTS
UNLESS SPECIFIED OTHERWISE. This Warranty does not apply to defects due directly or indirectly to
misuse, abuse, negligence or accidents, normal wear-and-tear, repair or alterations outside our facilities,
or to a lack of maintenance.
WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE,
BEGINNING FROM THE DATE THE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED
HEREIN, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS ARE EXCLUDED.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS,
SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. IN NO EVENT SHALL WMH TOOL GROUP
BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL,
CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL
OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY
TO YOU.
To take advantage of this warranty, the product or part must be returned for examination, postage
prepaid, to an Authorized Repair Station designated by our office. Proof of purchase date and an
explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, we
will either repair or replace the product at our discretion, or refund the purchase price if we cannot readily
and quickly provide a repair or replacement. We will return the repaired product or replacement at WMH
Tool Group’s expense, but if it is determined there is no defect, or that the defect resulted from causes
not within the scope of WMH Tool Group’s warranty, then the user must bear the cost of storing and
returning the product. This warranty gives you specific legal rights; you may also have other rights, which
vary from state to state.
WMH Tool Group sells through distributors only. Members of the WMH Tool Group reserve the right to
effect at any time, without prior notice, alterations to parts, fittings, and accessory equipment, which they
may deem necessary for any reason whatsoever.

3
Table of Contents
Warranty & Service ................................................................................................................................ 2
Introduction ............................................................................................................................................ 6
Specifications......................................................................................................................................... 6
Grounding Instructions........................................................................................................................... 7
Contents of the Shipping Cartons.......................................................................................................... 8
Tools Required for Assembly and Adjustments.....................................................................................8
Assembly and Setup .............................................................................................................................. 9
Drum Height Control .............................................................................................................................. 9
Conveyor Belt Tension........................................................................................................................... 9
Conveyor Belt Tracking........................................................................................................................ 10
Dust Cover ........................................................................................................................................... 10
Checking Drum Alignment ................................................................................................................... 10
Aligning the Drum ................................................................................................................................ 10
Wrapping Abrasive Strips .................................................................................................................... 11
Connecting Sander to a Dust Collector ............................................................................................... 13
Depth Gauge........................................................................................................................................ 13
Setting the Depth of Cut....................................................................................................................... 13
Establishing the Proper Drum Height .................................................................................................. 13
Selecting SANDSMART™ Feed Rates ............................................................................................... 14
Abrasives ............................................................................................................................................. 14
Selecting Drum Abrasives.................................................................................................................... 14
Selecting Abrasive Grits....................................................................................................................... 15
Stock Feeding Angle............................................................................................................................ 15
Multiple-Piece Sanding Runs............................................................................................................... 15
Edge Sanding ...................................................................................................................................... 15
Sanding Imperfect Stock...................................................................................................................... 15
Face Frames and Raised Panel Doors................................................................................................ 15
Monthly Maintenance........................................................................................................................... 15
Cleaning Abrasive Strips...................................................................................................................... 16
Stretching Abrasive Life ....................................................................................................................... 16
Performax 22-44 Abrasives ................................................................................................................. 16
Conveyor Belt Replacement ................................................................................................................ 17
Tension Roller Alignment..................................................................................................................... 17
Tension Roller Pressure Adjustment ................................................................................................... 17
Drum Height Control Adjustment ......................................................................................................... 17
Drum Head Assembly .......................................................................................................................... 19
Conveyor and Motor Assembly............................................................................................................ 22
Wiring Diagram .................................................................................................................................... 24

4
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 kid 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.
Warnings

5
29. Maintain a balanced stance at all times so that you do not fall or lean against the sanding drum or
other moving parts.
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 prior to
the machine being started or operated.
37. Keep your hands away from the sanding area.
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 - -
Warnings

6
Introduction
This manual is provided by Performax covering the safe operation and maintenance procedures for Model
22-44 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
Group. WMH Tool Group can also be reached at our web site: www.wmhtoolgroup.com.
Specifications
Stock Number ...................................................................................................................................649003K
Max. Width (in) .......................................................................................................................44 (two passes)
Min. Length (in) .......................................................................................................................................2-1/4
Max. Thickness (in) ....................................................................................................................................... 4
Min. Thickness (in) ................................................................................................................................... 1/32
Drum (in) ............................................................................................................... 5x22 Extrusion, Aluminum
Drum Speed (RPM)................................................................................................................................. 1700
Dust Chute (in) .............................................................................................................................................. 4
Conveyor Motor..............................................................................43 inch-lb torque, direct drive D.C. motor
Conveyor Variable Feed Rate (FPM)................................................................................. 0-10 (SandSmart)
Motor (TEFC) ........................................................................................................ 1-3/4 HP, 1Ph, 115V Only
Net Weight (lbs) ........................................................................................................................................ 231
Shipping Weight (lbs) ................................................................................................................................ 254
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.

7
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 Total Length of Cord in Feet
120V 25 50 100 150
AWG
12-16
Amps 14 12 Not Recommended

8
Contents of the Shipping Cartons
22-44 Plus Sander (Box 1)
1. Sander Assembly
1. Handwheel
1. TUF Tool
1. Abrasive Strip (wrapped on drum)
1. Owner's Manual
1. Warranty Card
1. Hardware Bag — containing:
4. 5/16”-18x3/4” Socket Head Cap
Screws
4. 5/16” Lock Washers
4. 5/16” Flat Washers
4. 3/8”-16x3/4” Hex Cap Screws
4. 3/8” Flat Washers
1. 1/8” Allen Wrench
1. 4MM Allen Wrench
1. 6MM Allen Wrench
22-44 Plus Conveyor (Box 2)
1. Conveyor Assembly
Tools Required for Assembly and
Adjustments
1. Flat Head Screwdriver
1. Set of Open End Wrenches
1. Set of Allen Wrenches
1. Adjustable Wrench
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(s).
2. Report any damage to your distributor.
3. Do not discard any shipping material
until the sander has been assembled
and is running properly.
Performax 22-44 PLUS Accessories & Supplies
Stock # Description
609004 Open Stand with Shelf
609005 Closed Stand with Shelf & Casters
98-2202 Infeed/Outfeed Tables
98-0130 Caster Set (4) for Open Stand
60-0505 Abrasive cleaning stick
60-0322-P Conveyor belt

9
Assembly and Setup
If you purchased the optional Performax 22-44
Plus Stand refer to its assembly instructions
before proceeding with the drum and conveyor
assembly.
1. Attach the handwheel (Fig. 1, Item A) to the
height adjustment screw and tighten with the
4mm Allen wrench supplied.
2. Place the conveyor upside down on a table
surface.
3. Raise the drum by turning the handwheel
(Fig. 2, Item B) clockwise.
4. Align the four holes in the conveyor with the
four holes in the base of the drum assembly.
5. Secure the conveyor in place with four
5/16”-18 x 3/4” socket head cap screws (Fig.
2, Item C), four 5/16” lock washers and four
5/16” flat washers.
6. Plug the motor cord into the control box
receptacle.
Drum Height Control
Drum height is controlled by the height
adjustment handle (Fig. 2, Item B). Turning the
handwheel in a counterclockwise direction
lowers the drum.
Turning the height adjustment handwheel one
revolution lowers the drum approximately 1/16”.
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 result in bent rollers,
bent take-up brackets and premature conveyor
belt wear.
After the PowerFeed unit has been installed,
adjust the hex nuts (Fig. 2, Item D) on both sides
of the conveyor to obtain a tight, and equally
tensioned, conveyor belt. Use the attached
wrenches (Fig. 2, Item E) to adjust the hex nuts.

10
Conveyor Belt Tracking
Belt tracking adjustment may be necessary
during the break-in period to compensate for belt
stretching.
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.
Tighten the hex nut (Fig. 3, Item A) on the side
the belt is drifting towards, and loosen the hex
nut on the opposite side. Use the attached
wrenches (Fig. 3, Item B) 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.
Dust Cover
To open the dust cover, push in on the knob
(Fig. 3, Item C) and lift.
Checking Drum Alignment
The sanding drum comes preset from the
factory. If a problem with the drum alignment
occurs follow the instructions listed below.
1. Push in and lift the knob (Fig. 3, Item C) to
open the 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 (Fig. 4, Item D), 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.
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 four hex cap bolts (Fig. 5, Item
E) (two in front and two in back).
2. Lay the thickness gauge under the drum
lengthwise.
3. Adjust the knob, (Fig. 5, Item F) until the
drum contacts the gauge equally along its
entire surface. Turn the adjusting knob
clockwise to raise the outboard end of the
drum, and counterclockwise to lower the
outboard end of the drum.
4. When the drum is parallel to the conveyor,
tighten the four hex cap bolts.

11
Fine Tuning Drum Alignment
When sanding boards wider than the drum,
drum alignment is critical and must be adjusted
exactly level to 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.
Run a piece of scrap wood approximately 6”
wide by 30” to 40“ long through the sander
sideways so that the end of the board extends
past the end of the drum.
Turn the board 180 degrees and sand the same
side without changing the sanding height.
If a ridge is visible where the drum overlaps,
loosen the four hex cap bolts (Fig. 6, Item A)
and turn the adjusting knob (Fig. 6, Item B)
slightly. Turn the adjusting knob clockwise to
raise the outboard end of the drum and
counterclockwise to lower it. Tighten the four
hex cap bolts. Repeat this process until the ridge
is gone and the entire board is sanded.
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 7.
2. Square off the end of the taper, as shown in
Figure 7.
3. Raise the fastener lever (Fig. 8, Item C) on
the outboard end of drum, and insert the
tapered end of the abrasive (Fig. 8, Item D)
so that it uses most of the width of the slot.
Lower 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 8.

12
1. Wrap the abrasive strip around the drum,
being careful not to overlap the windings, as
shown in Figure 9.
2. Mark the trailing end of the strip where it
crosses the inboard end of drum (Fig. 10,
Item A).
3. Remove the abrasive strip 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.
4. Rewrap the drum starting at the left side as
described in steps 3-5 on the previous page.
5. Raise the fastener lever completely 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
11).
The abrasive strip may stretch enough in use to
allow the take-up fastener to reach its lowest
position so that it is no longer able to maintain
tension on the strip. If this occurs, it will be
necessary to reset the take-up lever by raising it,
pushing the strip end into the slot, and then
releasing the lever.
The Tuf Tool (Fig. 12, Item B) can also be used
to hold the take-up fastener in place while you
feed the sandpaper through the slot. Hold the
Tuf Tool at an angle to insert the end into the
hole in take-up fastener. Pull the tool up and
rotate it 90° to clamp it onto the drum, (See
Figure 12).

13
Connecting Sander to a Dust Collector
Dust collection is necessary for all drum
sanders. The Performax 22-44 Plus is equipped
with a 4” dust collection port at the top of the
dust cover, and is designed to be used with a
standard dust collector as shown in Figure 13.
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.
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 hex nut (Fig. 14, Item A).
3. Adjust the pointer (Fig. 14, Item B) to read
zero and tighten the bolt.
Note: depending on the desired accuracy, you
may need to repeat this process when installing
different sandpaper grits.
Setting the Depth of Cut
Adjusting the Performax 22-44 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.
A good rule of thumb when sanding with grits
finer than 80 is lower the drum so that it contacts
with 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:
• Abrasive type and grit size.
• Width of the piece being sanded.
• Hardness of the piece being sanded.
• Feed rate of the piece being sanded.
Establishing the Proper Drum Height
To establish the proper drum height, place the
board to be sanded under the drum and lower
the drum to the board thickness. 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.

14
Selecting SANDSMART™ Feed Rates
Begin experimenting with the feed rate set at
about 40%-50% of maximum. The best feed rate
will depend on a number of factors, including
type of stock, grit, depth of cut used and whether
the stock is feed directly in-line with the
conveyor bed or at an angle. If a “ripple effect”
or inconsistent finish is observed, slow down the
feed rate. If the finish is smooth and consistent
and the sander is not overworking, experiment
using a faster feed rate.
The SandSmart control (Fig. 15, Item A)
continuously monitors the load on the drum
motor, and automatically regulates the speed of
the conveyor motor to maintain the highest feed
rate without overload. If the load on the drum
motor increases, the SandSmart control will
decrease the conveyor feed rate and will stop
the conveyor under extreme conditions. If the
load on the drum decreases, the SandSmart
control will increase the feed rate but will not
increase it faster than the manual setting on the
switch dial.
The best and most consistent finish will be
achieved if the conveyor does not change speed
during operation. When the “red” indicator light
(Fig. 15, Item B) comes on, the SandSmart
control has detected too great a depth of cut
and/or too fast a feed rate. This change in
conveyor speed may affect the finish surface. If
the finish is affected, make another sanding
pass without changing any settings. If the finish
is still affected, make adjustments by slowing the
conveyor and/or decreasing the depth of cut and
run the stock through again.
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.
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
eight different abrasive grits shown.
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
60 Grit
Surfacing and dimensioning boards,
truing warped boards
80 Grit Surfacing, light dimensioning,
removing planer ripples.
100 Grit Light surfacing, removing light 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.

15
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
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.
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.
Stock Feeding Angle
The optimum stock feeding angle, when
sanding, is at a 60-degree angle (Fig. 14).
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.
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.
Multiple-Piece Sanding Runs
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.
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
good procedure to stack and clamp several
pieces together to prevent them from slipping, or
tipping.
Sanding Imperfect Stock
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.
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.
Monthly Maintenance
For best results, perform the following
recommended maintenance procedures on a
monthly basis:
• Lubricate the conveyor bushings and
check for wear.
• 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.
• Check all the setscrews for tightness on
parts such as bearings, the conveyor
and couplings.

16
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 sandpaper
cleaning, and take all
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.
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.
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.
Performax 22-44 Abrasives
“Ready-to-Wrap” 24-220 Grit contains three pre-
cut wraps.
Ready-to-Wrap
60-2024 24 Grit 60-2120 120 Grit
60-2036 36 Grit 60-2150 150 Grit
60-2060 60 Grit 60-2180 180 Grit
60-2080 80 Grit 60-2220 220 Grit
60-2100 100 Grit
“Ready-to-Cut” 50-220 Grit contains 14 wraps.
24 & 36 Grit contains 10 wraps.
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 Grit 60-9220 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

17
Conveyor Belt Replacement
To replace the conveyor belt:
1. Disconnect the machine from the power
source. Unplug the motor cord from the
control box.
2. Raise the drum to its highest position using
the handwheel (Fig. 16, Item A).
3. Remove the belt tension by loosening the
take-up nuts (Fig. 16, Item B).
4. Unscrew the four socket head cap screws
(Fig. 16, Item C) that attach the conveyor to
the bed and remove the conveyor.
5. Slide the conveyor belt off the conveyor and
replace it with a new belt.
Tension Roller Alignment
1. Remove the abrasive strip (Fig. 17, Item D)
from the drum.
2. Loosen all four bearing hex nuts (Fig. 17,
Item E).
3. This will allow the tension rollers to drop to
the lowest position.
4. Lower the sanding drum so that it just
touches the conveyor bed.
5. Turn the drum height handle one complete
revolution to raise the drum.
6. Retighten the bearing hex nuts.
Tension Roller Pressure Adjustment
You can also adjust the spring-loaded screws
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.
Drum Height Control Adjustment
If the height control mechanism does not
operate easily or smoothly, or there is excessive
vertical movement or deflection of the drum
carriage, perform the following adjustments.
1. Tighten all four lock nuts (Fig. 18, Item F)
and then loosen them 1/8 to 1/4 turn.
2. Thoroughly lubricate the mating surfaces
and the height adjustment screw.

18
Troubleshooting Guide
Problem Possible Cause Solution
Conveyor belt does not
move. Shaft coupler is not attached. Attach the shaft coupler.
Conveyor rollers run
intermittently. Shaft coupling is loose.
Align the shaft flats of the gear motor
and the drive roller and tighten the
shaft-coupling setscrews.
Abrasive strip comes off
drum.
1. Slack in abrasive strip on drum.
2. Abrasive improperly wrapped.
1. Remove the slack in the strip.
2. Read the section on wrapping
abrasive strips.
Abrasive strip is loose.
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 loads up
prematurely.
1. Excessive depth of cut.
2. Excessive feed rate.
3. Inadequate dust collection.
4. Inadequate abrasive.
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.
Line or groove in stock. 1. Inconsistent feed rate. 1. Do not stop or change the feed
rate.
Wood burns.
1. Abrasive strip is overlapped.
2. Excessive depth of cut.
3. Excessive depth of cut for fine
grit.
4. Feed rate is too slow.
5. Abrasive is loaded.
6. Worn abrasives.
1. Re-wrap the abrasive strip.
2. Reduce the depth of cut.
3. Use a coarser grit or reduce the
depth of cut.
4. Increase the feed rate.
5. Clean the abrasives.
6. Replace the abrasives.
Board slips on conveyor
belt.
1. Tension rollers are too high.
2. Excessive feed rate.
3. Dirty or worn conveyor belt.
1. Lower the tension rollers.
2. Reduce the feed rate.
3. Replace the conveyor belt.
Sander motor slows or
stalls
1. Improper conveyor belt tension.
2. Excessive depth of cut.
3. Excessive feed rate.
1. Adjust the belt tension.
2. Reduce the depth of cut.
3. Reduce the feed rate.
Rippled sanded surface
A. Non-uniformly
spaced ripples.
B. Uniformly spaced
ripples.
A. Uneven feed rate.
B. Conveyor bed flexing or
vibration.
A1. Conveyor belt slipping, see
above.
A1. Board slips on conveyor, see
above.
A1. Power feed gear motor stalls,
see above.
B1. Reduce the depth of cut.
B1. Reduce the feed rate.
B1. Check for loose bolts, shaft-
coupling setscrews or out of
balance drum.
Gouging of the wood.
1. Inconsistent feed rate.
2. Stock slipping on conveyor.
3. Work piece not properly
supported.
1. Maintain constant feed rate (by
hand).
2. Excessive depth of cut
(PowerFeed) or inadequate hold
down pressure.
3. Add work supports for long work
pieces.
Snipes 1. Improper tension on rollers 1. See tension roller adjustment.
Shop wiring breaker
trips.
1. Too many tools on circuit.
2. Excessive length or inadequate
size extension cord.
1. Have a certified electrician
correct the shop-wiring problem.
2. Use a shorter, heavier gauge
extension cord.

19
Drum Head Assembly

20
Drum Head Assembly
Index Part
No. No. Description Size Qty.
1 ..........70-4102 .........................Motor, 1-3/4 HP, 110-120 Volt w/Cord.... ................................................. 1
2 ..........72-6104 .........................Strain Relief............................................. ................................................. 1
3 ..........72-5345 .........................Cord, Motor To Control Box .................... ................................................. 1
4 ..........30-9025 .........................Slide, Motor Mount.................................. ................................................. 1
5 ..........30-9024 .........................Carriage, Drum ....................................... ................................................. 1
6 ..........TS-0060061 ..................Screw, Hex Head Cap ............................ 3/8-16x1 1/4”............................ 9
7 ..........TS-0680041 ..................Washer, Flat............................................ 3/8”......................................... 11
8 ..........30-9023 .........................Shroud..................................................... ................................................. 1
9 ..........30-9026 .........................Stud......................................................... 5/16-24x1 3/4”.......................... 4
10 ........50-3090-01....................Washer, Oilite 5/16”I.D............................ ................................................. 8
11 ........TS-0209061 ..................Screw, Socket Head Cap........................ 3/8-16x1 1/4”............................ 4
12 ........12-2003-05....................Nut, Hex, Lock Nylon Insert .................... 5/16-24..................................... 4
13 ........30-9027 .........................Screw, Height Adjustment....................... 5/8-18UNC............................... 1
14 ........50-9000 .........................Bearing, Thrust ....................................... 51103 ....................................... 1
15 ........30-9028 .........................Handle-Wheel, Height adjustment .......... ................................................. 1
16 ........TS-0270051 ..................Set Screw................................................ 5/16-18x1/2”............................. 2
17 ........80-2324 .........................Washer, Flat-Nylon ................................. 5/8”I.D. ..................................... 1
18 ........20-1180-02....................Collar, Locking Shaft............................... ................................................. 1
19 ........10-4020-04....................Screw, Set Socket Head (Collar) ............ 5/16-18x1/4”............................. 2
20 ........94-1668 .........................Label, Height-Direction ........................... ................................................. 1
21 ........94-2270 .........................Label, Depth Gauge................................ 4”.............................................. 1
22 ........20-0762-02....................Key .......................................................... 3/16 SQ x3/4”........................... 2
23 ........50-2207 .........................Coupling .................................................. ................................................. 2
24 ........10-4010-04....................Set Screw................................................ 1/4-20x1/4”............................... 4
25 ........50-2209 .........................Spider, Coupling ..................................... ................................................. 1
26 ........80-3138 .........................Knob, Fine Tune Adjustment .................. ................................................. 1
27 ........TS-0060081 ..................Hex Head Cap Screw ............................. 3/8-16x1 3/4............................. 1
28 ........20-3216 .........................Spring...................................................... ................................................. 1
29 ........30-9022 .........................Base, Conveyor Mounting....................... ................................................. 1
30 ........20-0778 .........................Retaining Ring ........................................ STW25 ..................................... 2
31 ........40-3169 .........................Pointer, Depth Gauge ............................. ................................................. 1
32 ........50-3089 .........................Bearing, Drum......................................... NTN 6205................................. 2
33 ........TS-0720091 ..................Washer, Lock .......................................... 3/8”........................................... 4
34 ........10-1205 .........................Bolt Carriage Head ................................. 5/16-18x1”................................ 4
35 ........11-0206 .........................Washer, Lock .......................................... 5/16”......................................... 9
36 ........12-2000-05....................Hex Nut ................................................... 5/16-18..................................... 5
37 ........40-0304 .........................Bracket, Tension Roller........................... ................................................. 2
38 ........40-0308-01....................Bracket, Right-Tension Roller ................. ................................................. 2
39 ........40-0308-02....................Bracket, Left-Tension Roller ................... ................................................. 2
40 ........80-1060 .........................Pad, Bracket-Tension Roller ................... ................................................. 2
41 ........20-3211 .........................Spring, Tension Roller ............................ ................................................. 4
42 ........10-4008-16....................Screw, Fillister Head-Phillips .................. #8-32x1”................................... 4
43 ........40-3166 .........................Catch, Dust Cover................................... ................................................. 1
44 ........50-3105 .........................Bushing, Oilite 5/16”I.D. .......................... ................................................. 4
45 ........30-3051-06....................Roller, Tension........................................ ................................................. 2
46 ........30-3002 .........................Drum, Sanding ........................................ ................................................. 1
47 ........21-1173 .........................Fastener, Abrasive-Outboard.................. ................................................. 1
48 ........21-1172 .........................Fastener, Abrasive-Inboard .................... ................................................. 1
49 ........10-3003 .........................Screw, Flat Head-Phillips........................ 6-32x3/8”.................................. 2
50 ........80-2003 .........................Cover, Dust ............................................. ................................................. 1
51 ........80-3137 .........................Knob, Dust Cover.................................... ................................................. 1
52 ........40-3168 .........................Latch, Dust Cover ................................... ................................................. 1
53 ........80-3131 .........................Knob........................................................ ................................................. 1
54 ........2244PLUS-254..............Pin, Hinge................................................ #3x80 ....................................... 2
55 ........2244PLUS-255..............Pan Head Machine Screw ...................... 1/4-20x3/4”............................... 3