Powermatic PM2244 User manual

PM2244
Drum Sander
GB
Operating Instructions
JPW (Tool) AG
Tämperlistrasse 5
CH-8117 Fällanden
Switzerland
Phone [phone]
Fax [phone]
M-1792244MP 2016-10

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CE-Conformity Declaration
Product
Drum sander
PM2244
(1792244MP)
Brand
POWERMATIC
Manufacturer
JPW (Tool) AG, Tämperlistrasse 5, CH-8117 Fällanden
Schweiz / Suisse / Switzerland
We hereby declare that this product complies with the regulations
2006/42/EC
Machinery Directive
2014/30/EU
electromagnetic compatibility
designed in consideration of the standards
EN ISO 12100:2010
EN 60204-1:2006+A1:2009
EN 61000-6-2:2005
EN 61000-6-4:2007+A1:2011
Responsible for the Documentation
Hansjörg Meier
Head Product-Mgmt JPW (Tool) AG
2016-10-10 Alain Schmid, General Manager
JPW (Tool) AG, Tämperlistrasse 5, CH-8117 Fällanden
Schweiz / Suisse / Switzerland
Please note, that the entire machine documentation is accomplished in English only.

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GB - ENGLISH
Operating Instructions
Dear Customer,
Many thanks for the confidence you have shown in us with the purchase of your new POWERMATIC-machine. This
manual has been prepared for the owner and operators of a POWERMATIC PM2244 drum sander to promote safety
during installation, operation and maintenance procedures. Please read and understand the information contained in
these operating instructions and the accompanying documents. To obtain maximum life and efficiency from your
machine, and to use the machine safely, read this manual thoroughly and follow instructions carefully.
Table of contents
Section Page
1. Declaration of conformity ..........................................................................................................................................4
2. Warranty ....................................................................................................................................................................4
3. Safety.........................................................................................................................................................................4
3.1 Authorized use .....................................................................................................................................................4
3.2 General safety notes ............................................................................................................................................4
3.3 Remaining hazards ...............................................................................................................................................5
3.4 Lables and positions.............................................................................................................................................5
4.0 Specifications...........................................................................................................................................................6
5.0 Setup and assembly.................................................................................................................................................7
5.1 Shipping contents................................................................................................................................................7
5.2 Tools required for assembly................................................................................................................................7
5.3 Unpacking and cleanup .......................................................................................................................................7
5.4 Handwheel ..........................................................................................................................................................8
5.5 Infeed and Outfeed Tables..................................................................................................................................8
5.6 Caster lock knobs ................................................................................................................................................8
5.7 Dust Collection ....................................................................................................................................................8
5.8 Installing Abrasives..............................................................................................................................................8
6.0 Electrical connections..............................................................................................................................................9
6.1 GROUNDING INSTRUCTIONS...............................................................................................................................9
7.0 Adjustments ..........................................................................................................................................................10
7.1 Depth scale........................................................................................................................................................10
7.2 Conveyor belt tension/tracking.........................................................................................................................10
7.4 Inspecting drum alignment ...............................................................................................................................11
7.5 Tension roller adjustment .................................................................................................................................11
7.6 Storage cabinet .................................................................................................................................................12
8.0 Operations.............................................................................................................................................................12
8.1 Basic Operating Procedure................................................................................................................................12
8.2 Controls and LED display ...................................................................................................................................12
8.3 Drum motor operation......................................................................................................................................12
8.4 Feed Logic activation.........................................................................................................................................13
8.5 Conveyor motor operation................................................................................................................................13
8.6 Unit conversion .................................................................................................................................................13
8.7 Drum height setting ..........................................................................................................................................13
8.8 Emergency stop.................................................................................................................................................13
8.9 Switch safety key...............................................................................................................................................13
8.10 Setting depth of cut.........................................................................................................................................13
8.11 Establishing drum height.................................................................................................................................13
8.12 Selecting conveyor rate ..................................................................................................................................14
8.13 Maximum performance tips............................................................................................................................14
9.0 Maintenance .........................................................................................................................................................15
9.1 Cleaning and lubrication....................................................................................................................................15
9.2 Drum maintenance............................................................................................................................................15
9.3 Conveyor belt replacement...............................................................................................................................16
10.0 Abrasive dimensions .......................................................................................................................................16
11.0 Tracker kit............................................................................................................................................................17
12.0 Abrasives .............................................................................................................................................................18
13.0 Troubleshooting the PM2244 Drum Sander........................................................................................................19

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1. Declaration of conformity
On our own responsibility we hereby declare that
this product complies with the regulations* listed
on page 2. Designed in consideration with the
standards**.
2. Warranty
The JPW (Tool) AG guarantees that the supplied
product is free from material defects and
manufacturing faults.
This warranty does not cover any defects which
are caused, either directly or indirectly, by
incorrect use, carelessness, accidental damage,
repair, inadequate maintenance or cleaning and
normal wear and tear.
Any warranty details (i.e. warranty period) can be
found in the General Terms and Conditions (GTC)
that are integral part of the contract. These GTC
can be viewed at the website of your dealer or
sent to you upon request.
JPW (Tool) AG reserves the right to make changes
to the product and accessories at any time.
3. Safety
3.1 Authorized use
This drum sander is designed for sanding wood
and similar materials only. Sanding of other
materials is not permitted and may be carried out
in specific cases only after consulting with the
manufacturer.
The machine is not suitable for wet sanding.
The proper use also includes compliance with the
operating and maintenance instructions given in
this manual.
The machine must be operated only by persons
familiar with its operation and maintenance and
who are familiar with its hazards.
The required minimum age must be observed.
The machine must only be used in a technically
perfect condition.
When working on the machine, all safety
mechanisms and covers must be mounted.
In addition to the safety requirements contained in
these operating instructions and your country’s
applicable regulations, you should observe the
generally recognized technical rules concerning
the operation of woodworking machines.
Any other use exceeds authorization.
In the event of unauthorized use of the machine,
the manufacturer renounces all liability and the
responsibility is transferred exclusively to the
operator.
3.2 General safety notes
Woodworking machines can be dangerous if not
used properly. Therefore the appropriate general
technical rules as well as the following notes must
be observed.
Read and understand the entire instruction
manual before attempting assembly or operation.
Keep this operating instruction close by the
machine, protected from dirt and humidity, and
pass it over to the new owner if you part with the
tool.
No changes to the machine may be made.
Daily inspect the function and existence of the
safety appliances before you start the machine.
Do not attempt operation in this case, protect the
machine by unplugging the power cord.
Before operating the machine, remove tie, rings,
watches, other jewellery, and roll up sleeves above
the elbows.
Remove all loose clothing and confine long hair.
Wear safety shoes; never wear leisure shoes or
sandals.
Always wear the approved working outfit:
- eye protection
- expiratory protection
Do not wear loose clothes and gloves while
operating this machine.
Install the machine so that there is sufficient space
for safe operation and workpiece handling.
Keep work area well lighted.
The machine is designed to operate in closed
rooms and must be bolted stable on firm and
levelled table surface or on the supplied cabinet
stand.
Make sure that the power cord does not impede
work and cause people to trip.
Keep the floor around the machine clean and free
of scrap material, oil and grease.
Stay alert!
Give your work undivided attention.

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Use common sense. Do not operate the machine
when you are tired.
Keep an ergonomic body position.
Maintain a balanced stance at all times.
Do not operate the machine under the influence of
drugs, alcohol or any medication. Be aware that
medication can change your behaviour.
Never reach into the machine while it is operating
or running down.
Always close the drum cover before you start the
machine.
Keep you hands distant to drum housing and
conveyor belt when feeding the work piece.
Keep children and visitors a safe distance from the
work area.
Never leave a running machine unattended.
Before you leave the workplace switch off the
machine.
Do not operate the electric tool near inflammable
liquids or gases.
Observe the fire fighting and fire alert options, for
example the fire extinguisher operation and place.
Do not use the machine in a dump environment
and do not expose it to rain.
Sanding dust is explosive and can also represent a
risk to health.
Always use a suitable dust extraction device.
Before machining, remove any nails and other
foreign bodies from the workpiece.
Work only with well sharpened tools.
Machine only stock which rests securely on the
table.
Specifications regarding the maximum or
minimum size of the workpiece must be observed.
Do not remove chips and workpiece parts until the
machine is at a standstill.
Do not stand on the machine.
Connection and repair work on the electrical
installation may be carried out by a qualified
electrician only.
Have a damaged or worn power cord replaced
immediately.
Make all machine adjustments or maintenance
with the machine unplugged from the power
source.
Protect the environment, dispose of the packing in
an environmentally friendly manner.
Your appliance contains valuable materials which
can be recovered or recycled. Please leave it at a
specialized institution.
3.3 Remaining hazards
When using the machine according to regulations
some remaining hazards may still exist.
The moving sanding abrasive can cause injury.
Risk of kickback. The workpiece is caught by the
moving sanding sleeve and thrown back to the
operator.
Thrown workpiece parts can lead to injury.
Sanding dust and noise can be health hazards. Be
sure to wear personal protection gear such as
safety goggles and dust mask. Use a suitable dust
exhaust system.
Defective sanding abrasive can cause injuries.
The use of incorrect mains supply or a damaged
power cord can lead to injuries caused by
electricity.
3.4 Lables and positions
A: Safety warning
B: Sanding drum & Conveyor belt running direction
Fig.A Fig.B

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4.0 Specifications
Model number.............................................................................................................................................PM2244
Stock number.........................................................................................................................................1792244MP
Motor and electricals:
Drum motor:
Motor type ................................................................................................................................ induction motor
Motor power .................................................................................................................................. 1kW (1.3 HP)
Voltage .................................................................................................................................... 1~230V, PE, 50Hz
Listed full load amps........................................................................................................................................ 7A
Motor speed......................................................................................................................................1400 1/min
Starting amps ...............................................................................................................................................38 A
Running amps (no load) .............................................................................................................................. 1.7 A
Start capacitor ............................................................................................................................. 200µF 250VAC
Run capacitor ................................................................................................................................ 50µF 350VAC
Conveyor motor:
Motor type ................................................................................................................ totally enclosed DC motor
Motor power ...............................................................................................................................................40 W
Voltage .................................................................................................................................................. 200V DC
Listed full load amps.................................................................................................................................. 0.27 A
Motor speed..........................................................................................................................................44 1/min
On/off switch............................................................................................................................. magnetic switch
Power cord ....................................................................................................... H05RR-F, 3x1,5 mm2, 1830 mm
Power plug installed........................................................................................................... CCE 7/7, ~250V, 16A
Recommended circuit and fuse/breaker size 1.............................................................................................16A
Sound emission 2................................ Acoustic pressure level (EN ISO11202), 72 dB at 100cm; 74 dB at 50cm
Capacities:
Maximum board width.................................................................. single pass –559 mm; two passes 1188 mm
Maximum board thickness .....................................................................................................................102 mm
Minimum board length ............................................................................................................................ 60 mm
Minimum board thickness.......................................................................................................................0.8 mm
Materials:
Main body ..............................................................................................................................cast iron and steel
Enclosed cabinet ......................................................................................................................................... steel
Drum ................................................................................................................................... extruded aluminum
Extension tables .......................................................................................................................................... steel
Conveyor bed ........................................................................................................................................ cast iron
Handwheel ............................................................................................................................................ cast iron
Sanding drum:
Drum dimensions ...................................................................................................................dia. 127 x 559 mm
Drum speed .......................................................................................................................................1400 1/min
Sanding paper installed .............................................................................................................................80 grit
Drum elevation per one rotation of handwheel ................................................................................... 2.12 mm
Conveyor:
Conveyor speed......................................................................................................... variable within 0-3 m/min
Conveyor bed dimensions............................................................................................................ 590 x 385 mm
Conveyor height from floor....................................................................................................................780 mm
Dust collection:
Dust port outside diameter.................................................................................................................... 100 mm
Minimum extraction volume required ................................................................................................ 560 m3/h
Dimensions:
Overall dimensions of shipping crate (LxWxH)................................................................1160 x 585 x 1277 mm
Overall dimensions, fully assembled (LxWxH) ................................................................1073 x 957 x 1257 mm
Weights:
Net weight.................................................................................................................................................149 kg
Shipping weight.........................................................................................................................................190 kg
1Subject to local/national electrical codes. 2The specified values are emission levels and are not necessarily to
be seen as safe operating levels. As workplace conditions vary, this information is intended to allow the user to
make a better estimation of the hazards and risks involved only.

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The specifications in this manual were current at time of publication, but because of our policy of continuous
improvement, Powermatic reserves the right to change specifications at any time and without prior notice,
without incurring obligations.
5.0 Setup and assembly
Figure 2
5.1 Shipping contents
See Figure 2.
1 Sander unit
1 Handwheel with handle –A
2 Extension tables –B
2 Infeed table brackets (L and R) –C
2 Outfeed table brackets (L and R) –D
2 Caster lock knobs (Pre-assembled onto stand)
–E
4 Leveling Feet (only for benchtop model)
16 Socket hd. cap screws M8x20 - HP1
16 Lock washers M8 - HP2
16 Flat washers M8 - HP3
Read and understand all
assembly instructions before attempting
assembly. Sander must be disconnected from
power during assembly procedures. Failure to
comply may cause serious injury.
5.2 Tools required for assembly
Hex wrenches 4mm, 6mm
Open-end wrench 14mm
Straight edge (such as straight steel bar or carefully
jointed board)
5.3 Unpacking and cleanup
1. Inspect all contents for shipping damage.
Compare contents of shipping carton with the
contents list in this manual. Report any damage
or part shortages to your distributor.
Sander is heavy! Use an
assistant to help remove from pallet.
2. Remove any screws or blocks holding sander to
pallet. Carefully slide sander off pallet (NOTE:
There are internal blocks on the pallet securing
the sander –lift up on sander end to clear these
while sliding off pallet.)

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5.4 Handwheel
1. Back off set screw (A1, Figure 2), and push
handwheel (A, Figure 2) down onto shaft as far
as it will go. Make sure set screw faces key on
shaft. Tighten set screw with 4mm hex wrench.
2. Install handle (A2) onto handwheel, and tighten
using 14mm wrench on the flats (A3).
Rotate handwheel clockwise to lower drum head;
counterclockwise to raise.
5.5 Infeed and Outfeed Tables
1. Attach table brackets (C,D, Figure 2) to sander
base with M8 screws and washers
(HP1,HP2,HP3). Tighten screws with 6mm hex
wrench.
NOTE: Longer brackets (C) mount to infeed side,
shorter brackets (D) to outfeed side. Each
bracket has left and right version. See Figure 2
for proper orientation.
2. Place extension tables (B) onto table brackets
(C) and insert screws and washers
(HP1,HP2,HP3). Note: Leave screws loose for
now.
3. Place a straight edge across conveyor bed and
extension table. See Figure 3.
4. Position straight edge at two or three places
across width of table, as you adjust extension
table until it is slightly below surface of
conveyor belt.
5. Tighten screws.
6. Repeat for opposite table.
Figure 3
5.6 Caster lock knobs
Screw the caster lock knobs (E, Figure 2) into the
threaded holes on the side of the cabinet.
Always tighten the caster lock
knobs before operating the sander.
5.7 Dust Collection
Dust collection is mandatory for a safe work
environment and extended abrasive life. The
PM2244 is equipped with a 100mm dust collection
port. Secure a 100mm dust collection hose to the
port with a hose clamp (Figure 4), and connect to a
high volume dust collector (minimum 800 CFM).
Note: Dryer vent hose is not acceptable for this
purpose.
Figure 4 (hose and clamp not included)
5.8 Installing Abrasives
Proper attachment of the abrasive strip to the drum
is critical to achieving top performance from your
drum sander.
An 80-grit, 3-inch wide abrasive strip is pre-installed
on the drum. Optional pre-cut abrasives of different
grits are also available; see sect. 10.0.
(TIP: If you are using an after-market abrasive, use
a new Powermatic-supplied abrasive as a template
to quickly cut a new strip. Alternatively, a diagram
is supplied in Figure 20 showing trim
measurements.)
1. Press fastener lever (F, Figure 5) on outboard
(left) end of drum, and insert tapered end of
abrasive through slit in fastener, as shown.
Insert approximately 3-inches of abrasive strip
into fastener. Align tapered edge of abrasive
strip with left edge of drum.
2. Release fastener lever to secure end of strip.
Figure 5
3. Begin wrapping abrasive around drum. The
tapered edge of strip end should follow edge of
drum.
4. Continue to wrap abrasive in spiral fashion by
rotating drum with one hand and guiding strip
with the other. See Figure 6.

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Successive windings of strip must not have any
overlap. They should be flush with previous
windings or with a slight gap between.
The last winding should have a 1/16 to 1/8 in.
gap, before insertion into inboard fastener (see
Figure 7).
Figure 6
5. Press inboard take-up lever (G, Figure 7) and
insert trailing end of strip as far as it will go. If
necessary, trim tapered end of abrasive strip.
6. Release inboard take-up lever to secure strip.
All abrasive strips will stretch over time as they are
used, and may stretch enough to allow the take-up
lever to reach its lowest position so that it cannot
maintain tension on the strip. If this occurs, follow
the above procedures to reset the take-up lever.
Figure 7
6.0 Electrical connections
All electrical connections must
be done by a qualified electrician in compliance
with all local codes and ordinances. Failure to
comply may result in serious injury.
The PM2244 Sander is rated at 230-volt power only.
The sander comes with a plug designed for use on a
circuit with a grounded outlet. Before connecting to
power source, be sure switch is in off position.
It is recommended that the sander be connected to
a dedicated 16 amp circuit with circuit breaker or
fuse. If connected to a circuit protected by fuses,
use time delay fuse marked “T”. Local codes take
precedence over recommendations.
6.1 GROUNDING INSTRUCTIONS
This machine must be grounded. 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. Failure to comply may cause serious or
fatal injury.

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7.0 Adjustments
Disconnect sander from power
source before making adjustments.
7.1 Depth scale
The depth scale indicates distance between bottom
of sanding drum and top of conveyor belt.
Adjustment is performed by “zeroing” the scale.
1. With an abrasive strip on the drum, lower
sanding drum to where it touches top of
conveyor belt.
2. At this drum position, the depth scale pointer
should align with zero mark on scale. If it does
not, loosen screw (Figure 9) and raise or lower
pointer to align with zero on scale.
3. Retighten screw.
Note: Depending on desired accuracy, you may
need to repeat this process when installing
different abrasive grits.
This calibration of depth gauge establishes
“absolute” distance from conveyor belt to drum,
while the control panel allows setting of zero point
for relative distance.
Figure 9
7.2 Conveyor belt tension/tracking
Conveyor belt tension adjustment may be
necessary during the break-in period to
compensate for belt stretching.
7.2.1 Tension adjustment
1. Remove left side cover (Figure 10) by removing
two socket head screws with 4mm hex wrench.
Figure 10
2. Adjust take-up screw nuts (Figure 11) with a
17mm wrench. Do this on both sides of
conveyor to obtain approximately equal tension
on both sides of sanding belt.
NOTE: Insufficient belt tension will cause
slippage of conveyor belt on drive roller during
sanding operation. The conveyor belt is too
loose if it can be stopped by hand pressure
applied directly to top of moving conveyor belt.
Excessive belt tension can result in bent rollers,
bent brackets, and/or premature wearing of
bushings or conveyor belt.
3. Reinstall left side cover when tensioning is
complete.
Figure 11
7.2.2 Tracking adjustment
A belt tracks correctly when it moves centrally on
the conveyor rollers without drifting to either side.
Tracking adjustments are made while conveyor belt
is running.
1. Make sure proper belt tension has been
achieved (see 7.2.1 Tension adjustment).
2. Turn on conveyor and set to maximum speed.
Watch for a tendency of conveyor belt to drift
to one side of conveyor. If it drifts, tighten or
loosen take-up screw nut on right side of
conveyor (Figure 11).
Note: Adjust take-up screw nut only 1/4 turn at
a time. Then allow time for belt to react to
adjustments before proceeding further.
Try to avoid over adjustments, as this may
affect belt tension. If tension is affected, if may
become necessary to remove left side cover
and use both take-up screw nuts to accomplish
tensioning and tracking.
7.2.3 Trackers
The sander comes equipped with “Trackers”,
ceramic guides that reduce the amount of
adjustments needed to keep the conveyor belt
tracked (centered) on the conveyor bed. See Figure
12. These guides have a magnetic backing to keep
them in place. If a Tracker wears through, it can be

11
reversed by turning it over. See sect. 11.0 Tracker
Kit for more information about re-setting trackers.
Figure 12
7.4 Inspecting drum alignment
The sanding drum must be parallel to conveyor bed
for proper machine operation. The sanding drum
comes pre-aligned from the manufacturer. If a
problem with drum alignment should occur, follow
the instructions below.
First, inspect the alignment with a gauge of some
kind. The following procedure uses a steel block as
a gauge.
1. Unplug sander from power source.
2. Open dust cover and remove abrasive strip
from drum.
3. Insert gauge (A, Figure 13) between drum and
conveyor bed at outboard side of drum.
Figure 13
4. With dust cover open, lower sanding drum
while slowly rotating drum by hand, until drum
lightly contacts gauge.
5. Remove gauge and place under drum at
inboard side.
6. If drum does not contact gauge equally on both
ends of drum, alignment is needed.
To align drum:
7. Turn adjustment dial (B, Figure 13) to raise or
lower outboard end of table. Follow directional
marks on dial (+to raise).
7.4.1 Verifying drum alignment
Note: This is an operational test. Perform this
procedure only after you have become familiar with
sander operation.
When sanding boards wider than the drum, table
alignment is critical and table must be adjusted
exactly level to slightly lower on the outboard end.
This will prevent any ridges from developing in the
stock. Always check this on a piece of scrap wood,
as follows, before sanding the work piece.
1. Run a piece of scrap wood approximately
150mm wide by 700mm to 1000mm long
through the sander sideways so that end of
board extends past outboard side of drum.
2. Without changing drum height, rotate board
180°and sand the same side.
3. If a ridge is visible where the drum overlaps,
lower table at outboard end slightly by turning
dial (B, Figure 13).
4. Repeat this process until the ridge is eliminated
and entire board is sanded.
TIP:Place a mark on adjustment dial to keep track
of how much dial rotation is needed to change
drum alignment for wider (over 559mm) sanding.
When sanding narrow stock (less than 559mm) turn
dial opposite direction the same amount as the
initial wide sanding so that drum is again parallel.
7.5 Tension roller adjustment
The infeed and outfeed rollers are tensioned to
provide downward pressure on the workpiece to
prevent slippage on the feed conveyor. Tension
rollers have been set by the manufacturer, but
should be inspected and may require adjustment as
the sander receives use.
Improperly adjusted tension
rollers (i.e. those set too high, rendering them
non-functional) could allow kickback of pieces
being sanded.
You can increase or decrease tension roller
pressure by turning the screws on the tension roller
brackets (Figure 14).

12
Figure 14
Too much tension roller pressure can result in a
“snipe” mark, which is a visible line running across
the width of the board and located approximately
60mm from end of board.
If snipe occurs on the leading end of board, adjust
outfeed tension roller. If the snipe occurs on trailing
end of board, adjust infeed tension roller.
7.6 Storage cabinet
Open cabinet by pulling latch outward and rotating
left, as shown in Figure 15.
Figure 15
8.0 Operations
Before using your drum sander, review the previous
sections on initial set-up and adjustment. Before
operating, make sure an abrasive strip is mounted
and a proper dust collection system is connected.
8.1 Basic Operating Procedure
1. Establish depth of cut.
2. Start dust collection system.
3. Start sanding drum.
4. Start conveyor and select feed rate.
5. Feed stock through machine.
To feed stock through the sander, rest and hold
board to be sanded on conveyor belt, allowing
conveyor belt to carry board into drum. Once stock
is halfway through, reposition yourself to outfeed
side of machine to receive and control board as it
exits.
8.2 Controls and LED display
Figure 16 shows control panel functions.
Figure 16
A –Main power switch
B –Drum motor switch
C –Conveyor motor switch (variable speed)
D –Emergency stop
E –Unit selector mm / inch
F –Zero depth reset
G –Conveyor ON indicator
H –Drum load indicator
I –Feed Logic ON indicator
J –Drum ON indicator
K –Drum height
L –Drum height unit
8.3 Drum motor operation
1. Connect power supply to machine. –Display
remains dark.
2. Turn on main power switch (A). –Display will
illuminate. Racetrack (G) may flash
continuously, indicating that emergency stop is
still engaged.
3. Rotate emergency stop (D) clockwise to
disengage stop.
4. Turn on drum motor by firmly pressing switch
(B) –Illuminated circle (J) will run, and “ON” will
illuminate.
Note: If drum motor does not start, make sure
conveyor speed dial (C) is set to OFF.
5. Load indicator (H) may illuminate. –When
motor is running without load, one bar may
illuminate. More bars are illuminated as load
increases.

13
6. Turn off drum motor switch (B). –“ON” will go
dark. Circle (J) will continue running for 5
seconds while drum slows to a stop. Then circle
(J) will stop running.
Do not open drum hood until
drum comes to a complete stop.
8.4 Feed Logic activation
If load on the sanding drum becomes excessive and
motor is overloaded or exceeds specified current,
“FEED LOGIC” (I) flashes and “ON” (I) lights up.
Conveyor will be automatically slowed to highest
efficient speed.
8.5 Conveyor motor operation
Rotate conveyor speed dial (C, Figure 15) clockwise
to start and increase speed of conveyor. –
Racetrack (G) will illuminate and run. Conveyor
speed will show inside racetrack.
IMPORTANT: If sander is shut off or E-stop is
engaged, conveyor speed dial must be returned to
OFF position in order to restart sander.
8.6 Unit conversion
Toggle unit selector button (E) to select imperial or
metric units. Units for drum height and conveyor
speed will change accordingly on the display. When
power is turned off, units default to imperial.
8.7 Drum height setting
Lower drum until it just contacts workpiece, then
push zero depth reset button (F, Figure 16) to zero
the setting of drum height from workpiece. The
handwheel is then used to lower the drum in exact
increments for each pass, by viewing the depth on
the control display (K).
When handwheel is rotated to move drum
downward below zero point, a negative sign will
appear before the depth number (K).
NOTE: Drum height will remain in control panel
memory if E-stop button is pressed. Drum height
will not remain in memory if main power switch is
turned OFF.
8.8 Emergency stop
Press E-stop button (D, Figure 16) to shut down all
machine operations. When E-stop is pressed, drum
motor stops and “ON” (J) goes dark on display.
Conveyor motor also stops, and racetrack (G)
flashes.
IMPORTANT: The E-stop remains engaged until it is
rotated clockwise for release. Also, the conveyor
speed dial (C, Figure 16) must be returned to OFF
position before restarting machine.
The E-stop is designed for emergency shut-off.
Under normal circumstances, use the other
switches on the control panel to turn off machine
functions.
8.9 Switch safety key
To prevent unauthorized use of sander, turn off
main switch and pull out safety key (Figure 17).
Store key in a safe place. Key must be reinserted to
start sander.
Figure 17
8.10 Setting depth of cut
Adjusting the drum sander for proper contact
between abrasive and stock determines the depth
of cut. The depth of cut is controlled by the height
adjustment handwheel.
It may take some experimentation to determine the
proper depth of cut, given the variables of abrasive
grit, type of wood, and feed rate. For best results,
use scrap wood to practice sanding and to develop
skill and familiarity with the machine before doing
finish work.
A combination of several variables will determine
proper depth of cut to use, including the following:
1. Abrasive type and grit size.
2. Width of piece being processed.
3. Hardness of piece.
4. Feed rate of conveyor belt.
8.11Establishing drum height
A good rule of thumb when sanding with grits finer
than 80 is to place the stock to be sanded under the
drum and lower drum until it contacts the stock.
Drum should still rotate by hand. Without changing
drum height, finish feeding the stock under the
sander.
Start sanding drum and sand the stock at that same
position.
Do not start drum while in
contact with stock.

14
For sanding with grits coarser than 80, you can
lower the drum slightly.
Always maintain control of stock. Through practice
you will learn the proper depth of cut considering
the variables above.
8.12Selecting conveyor rate
A faster feed rate allows faster sanding but fewer
revolutions of the drum per inch of sanding. A
slower feed rate provides more revolutions of the
drum per inch of sanding to allow a greater depth
of cut and smooth sanding.
Begin experimenting with feed rate set to about
40% to 50% of maximum. The best feed rate will
depend on a number of factors, including type of
stock, grit and depth of cut used, and whether the
stock is fed directly in line with the conveyor bed or
at an angle. If the drum motor is lugging down, if
the conveyor belt is slipping, or if you observe a
ripple effect on the stock, slow the feed rate. If the
finish is smooth and the machine is not
overworking, you can experiment using a faster
feed rate.
The Feed Logic control continuously monitors the
load on the drum motor, and automatically
regulates the speed of the conveyor motor to
maintain highest feed rate without overload. When
“Feed Logic” flashes and “ON” illuminates on the
display (I, Figure 16), the Feed Logic control has
detected too great a depth of cut and/or too fast a
feed rate.
If load on the drum motor increases, Feed Logic will
decrease the conveyor feed rate and will stop the
conveyor under extreme conditions. If load on the
drum motor decreases, Feed Logic will increase the
feed rate but will not increase it faster than the
speed the user has preset on the dial.
The best and most consistent finish will be achieved
if the conveyor does not change speed during
operation. A 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.
Also try a faster feed rate or less depth of cut if the
stock you are working begins to show burn marks.
With cherry, hard maple or other hardwoods, using
a shallower depth of cut and a faster feed rate will
help minimize burn marks.
Slightly angling the stock as it is fed into the
machine will also help prevent burning the stock.
Because of the wide range of variables, it is
important to experiment with your specific
conditions and make adjustments to achieve
optimum feed rate. If problems occur, first inspect
and adjust feed rate, referring to sect. 12.0
“Troubleshooting.”
8.13Maximum performance tips
The versatility designed into the PM22-44 drum
sander allows it to be used for a variety of tasks that
will boost return on your investment. For example,
it will speed up fine sanding work often done with
slower, dust-generating hand sanders, and will
achieve fine thickness adjustments not possible on
some sanders. It can be used to surface figured
woods –bird’s eye or curly maple, for example –
which can be damaged if fed through a planer.
Learning how to use its adjustments and controls
will allow you to fine-tune the machine for
maximum results. The best results come from
experimenting with different abrasive grits and
machine adjustments to fit the job at hand.
Following is a list of useful tips which can help you
improve performance of your sander.
8.13.1 Dust collection
When connecting dust collectors, remember that
straight pipe will not restrict airflow as much as
flexible tubing. Y’s and elbows will restrict airflow
less than T’s. Also, a hose smaller than 100mm
diameter should not be used.
8.13.2 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 determine the thickness of
the thinnest piece and process all pieces to that
same thickness in one session. Be aware that the
sander will remove cups and crowns in the
workpiece; consider this when measuring and
processing stock to the same thickness.
8.13.3 Simultaneous multiple pieces
When sanding multiple pieces simultaneously,
make sure to stagger (step) the pieces across the
width of the conveyor belt. This provides better
contact with the tension rollers. Try to process only
multiple pieces of similar thickness.
If there is a significant thickness difference, the
thinner pieces can slip on the conveyor belt if they
do not contact the tension rollers. Also note that
pieces thicker than 20mm should be longer than
the minimum normally recommended to prevent
tipping of the stock.
8.13.4 Edge sanding
When edge sanding, the 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 20mm wide or

15
more than 50mm high, it is good procedure to stack
and clamp several pieces together to prevent them
from slipping or tipping on the conveyor belt.
8.13.5 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.
8.13.6 Face frames and raised panel doors
It is very important to have the proper abrasive
contact when doing this type of sanding. If the
machine 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 make
sure, when using abrasives finer than 80 grit, that
the drum is in contact with the wood but can still be
spun by hand. If there is room, angling the stock on
the conveyor belt can also help. Slowing the
conveyor feed when coming to a rail in the stock
can help prevent a dip or gouge. This allows the
abrasive to work the wider width with less effort,
and to achieve better consistency of the finished
surface.
8.13.7 Stock feeding angle
Some pieces, because of their dimensions, will need
to be fed into the machine at a 90° angle
(perpendicular to drum). However, even a slight
offset angle of stock will provide for more effective
stock removal. The optimum feeding angle for stock
removal is about 60°.
Angling the workpiece for stock removal provides
other advantages, such as less loading of certain
areas of the drum due to glue lines or mineral
streaks in the stock, more even wear of abrasive
strips, potentially faster feed rates, and lighter
loads on the motor. Note that to get the best final
finish, however, the stock should be fed through
the machine so it will be sanded in line with the
grain of the wood on the final one or two passes.
9.0 Maintenance
Before doing maintenance on
the machine, disconnect it from the electrical
supply by pulling out the plug or switching off the
main switch. Failure to comply may cause serious
injury.
9.1 Cleaning and lubrication
For best results, make cleaning the sander a regular
shop procedure. Allowing excess build-up of dust
and debris can adversely affect performance
through loading of the abrasives, slippage on the
conveyor table, and/or the accumulation of
material inside the drums which can throw off the
center of balance.
Leave the dust collector on when cleaning dust
from the drums. Also brush the conveyor belt after
cleaning operations. If not cleaned, the conveyor
belt could allow stock to slip during sanding
operations.
NOTE: Bearings are pre-sealed and require no
lubrication.
Lubricate conveyor bushings as needed, and
check for wear.
Lubricate elevating leadscrew (A, Figure 18) as
needed.
Clean sawdust from abrasive strip and brush
dust from conveyor belt.
Keep gib areas clean (B, Figure 18). Periodically
lubricate gibs lightly with grease.
Blow dust from motors and switches. Blow
dust from inside of sanding drum, which may
cause vibration or offset the center of balance.
Check all set screws for tightness on parts such
as bearings, conveyor bed, and couplings.
Figure 18
9.2 Drum maintenance
The drum should not require removal from the
machine under normal circumstances. Should
maintenance ever become necessary, the drum has
been designed for easy removal and replacement.
Remove four socket head screws (C, Figure 19).
Carefully lift out drum with coupling (D) attached.

16
Figure 19
9.3 Conveyor belt replacement
1. Disconnect sander from power.
2. Raise drum to highest position.
3. Loosen take-up screw nuts (Figure 11) on both
sides of conveyor to relieve belt tension, and
slide the driven roller fully inward.
4. Remove three (3) screws that attach conveyor
table to base. Lift up conveyor table and
remove it from machine. Avoid tearing the belt
on any edges underneath the conveyor bed. Do
not allow the Trackers to drop, as they may
break.
5. Install new belt along with trackers (see sect.
11.0), and re-install conveyor table. Tension
and track the new belt.
Note: If the conveyor belt continually tracks to one
side of the machine, reversing the belt on the
conveyor bed may remedy the problem. To make
sure the conveyor bed is not twisted, place a level
on the conveyor bed. Level the machine if needed.
If there is still a problem, proceed with the steps
below:
Step 1: Check conveyor drive roller and driven roller
to make sure they are parallel to surface of
conveyor bed. To do this, first center conveyor belt
on the bed. Then lay a straight-edge on the exposed
edge of conveyor bed on left (outboard) side,
extending it over the roller. Note distance between
roller and straightedge.
Step 2: Now repeat Step 1 on right (inboard) side of
conveyor. Compare the measurements from side to
side. If they are not equal, loosen one of the
brackets that hold the roller in place. Tip this
bracket until distance between roller and straight-
edge are equal from side to side, then tighten
bracket.
10.0 Abrasive dimensions
Use this diagram to cut after-market abrasive strips
to fit (or use a new Powermatic-supplied strip as a
template).
Figure 20

17
11.0 Tracker kit
Stock No.: PM2244-213
Trackers dramatically reduce tracking adjustments
of conveyor belts. They are already installed on
your sander. The following information is for
resetting or replacing your trackers, should that
become necessary.
1. Disconnect power to sander.
2. Raise drum as high as it will go, and remove
side cover (see Figure 10).
3. Loosen both conveyor take-up screw nuts to
relieve conveyor belt tension and slide driven
roller fully inward.
4. Remove the three screws (A, Figure 21) holding
conveyor table to sander base.
Figure 21
5. Lift conveyor table and slide it out of sander.
Turn conveyor table upside down. Be careful
not to damage conveyor belt.
6. The tracker is positioned on underside of
conveyor bed near driven roller (Figure 22).
The back of tracker is magnetized and will stick
to side wall of conveyor bed. Do not install
tracker if edge of conveyor belt is damaged or
torn.
7. With first tracker installed, slide conveyor belt
into bottom slot of tracker. Note: When
installed properly, only bottom lip of tracker
will be visible. The top slot can be used if
bottom slot wears out.
8. Install second tracker opposite the first. Use
both trackers unless the second one does not
fit in conveyor or unless conveyor belt is
damaged.
9. Turn conveyor table right-side up and re-
position it onto sander. Re-attach three (3)
mounting screws and tighten. Caution: Be
careful not to knock tracker(s) out of conveyor
bed when turning conveyor over. Trackers may
break if allowed to fall.
10. Make sure all switches are off. Connect power
to sander and plug in motor.
11. Tension conveyor belt using take-up screw
nuts. If both trackers are installed, it is very
important to have equal tension on both sides
of conveyor belt. Tighten take-up screw nuts
on both sides until equal tension is obtained.
12. To check tension, turn on conveyor full speed
and place both hands on conveyor. If conveyor
belt can be stopped, continue tensioning until
conveyor belt cannot be stopped by both
hands on the belt while conveyor is operating
at full speed.
13. Make sure conveyor belt runs smoothly inside
tracker slot and that the magnet is holding the
tracker in position.
14. Continue to watch tracking of conveyor and
adjust only if necessary, making sure to keep
equal tension on conveyor belt at all times and
not allowing conveyor belt to buckle under
conveyor bed.

18
Figure 22 –Underside of
conveyor shown12.0
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.
12.1 Selecting drum abrasives
It is important to select the proper grit of abrasive
for the type of sanding being performed to achieve
maximum results. As with any sanding operation,
first begin sanding with a coarser grit, depending
upon 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.
The amount of stock to be removed is a major
consideration when choosing the grit grade with
which to begin. Grits 24, 36, 50 and 60 are primarily
designed for stock removal. Grits 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 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 which will not
accept stains evenly. This will vary by type of wood.
Oak, for example, is susceptible to burnishing
because of its open pores.
12.2 Cleaning abrasive strips
Regularly clean the abrasive strip on the drum with
commercially available cleaning sticks, following
the manufacturer’s directions. When cleaning, also
brush the stick crumbs from the drum while it is still
rotating.
In some cases, heavy loaded areas can be removed
with Plexiglas held on edge over the rotating drum.
Always wear eye protection
while performing sandpaper cleaning, and take all
precautions to avoid any contact of hands or
clothing with the rotating drum.
Cloth-backed abrasives can be cleaned by soaking
in paint thinner or mineral spirits for 20 minutes to
one hour, then using a brush to remove any build-
up. Dry the abrasive strips completely before using.
Any used solvents should be discarded in
compliance with environmental regulations.
12.3 Increasing abrasive life
Abrasive life can be increased not only by cleaning,
but 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
abrasive.
12.4 Abrasive selection guide
Grit
Common Application
24
Abrasive planing, surfacing rough-sawn boards, maximum stock removal, glue removal.
36
Abrasive planing, surfacing rough-sawn boards, maximum stock removal, glue removal.
50
Surfacing and dimensioning boards, truing warped boards
60
Surfacing and dimensioning boards, truing warped boards.
80
Light dimensioning, removal of planer ripples.
100
Light surfacing.
120
Light surfacing, minimal stock removal.
150
Finish sanding, minimal stock removal.
180
Finish sanding only, not for stock removal.
220
Finish sanding only, not for stock removal.
Table 1

19
13.0 Troubleshooting the PM2244 Drum Sander
Symptom
Possible Cause
Correction *
Drum motor won’t start
when ON button is
pushed.
No incoming current.
Check connections at plug or circuit panel.
Safety key missing from switch.
Install safety key.
E-stop still engaged (racetrack is
flashing).
Disengage E-stop by rotating clockwise.
Conveyor speed dial not reset after
using E-stop (racetrack is flashing).
Turn speed dial to OFF position, then try
starting machine.
Low voltage.
Check power line for proper voltage.
Open circuit in motor or loose
connection.
Inspect all lead connections on motor for
loose or open connections.
Motor will not start:
fuses blow or circuit
breakers trip.
Short circuit in line cord or plug.
Inspect cord or plug for damaged insulation
and shorted wires.
Short circuit in motor or loose
connections.
Inspect all connections on motor for loose
or shorted terminals or worn insulation.
Incorrect fuse or circuit breaker in
power line.
Install correct fuse or circuit breaker.
Motor overheats.
Air circulation through motor restricted.
Clean motor fan with compressed air to
restore normal air circulation.
Motor overloaded (Feed Logic not
functioning properly.
Have controls inspected and repaired.
Motor stalls, resulting in
blown fuses or tripped
circuit.
Short circuit in motor or loose
connections.
Inspect connections on motor for loose or
shorted terminals or worn insulation.
Low voltage.
Correct low voltage conditions.
Incorrect fuse or circuit breaker in
power line.
Install correct fuse or circuit breaker.
Loud, repetitive noise or
vibration coming from
machine.
Fasteners loose.
Inspect fasteners and tighten where
needed.
Motor fan is hitting cover.
Tighten fan or shim fan cover.
Machine not level.
Place sander on level floor; shim if needed.
Conveyor motor will not
run.
Conveyor speed dial not reset after
using E-stop.
Turn speed dial to OFF position, then try
starting machine.
Drum motor shuts off
when finger leaves
drum motor on/off
switch.
Not pressing drum motor switch long
enough.
Press and hold for at least 1 second.
Conveyor speed dial not reset after
using E-stop or switching off main
switch.
Turn speed dial to OFF position, then try
starting machine.
* WARNING: Some corrections may require a qualified electrician.
Table 2