Feed Logic Activation; Conveyor Motor Operation; Unit Conversion; Drum Height Setting - Powermatic PM2244 Operating Instructions Manual

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.

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.

8.11 Establishing 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.
contact with stock.
13
Figure 17
Do not start drum while in