Powermatic WB-25, WB-37, WB-43 operating instructions Feed Rate, Pressure Bar Adjustment

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1.Remove the four screws securing the emergency stop cover and remove the cover. See Figure 13. This will allow better inspection of the belt’s movement on the roller.

2.Turn on the conveyor belt.

3.Adjust tracking using the same adjustment screws that were used for tensioning in Figure 13.

4.If the conveyor belt is moving to the right side, turn the right screw clockwise. This will return the tracking toward the left.

5.If the conveyor belt is moving to the left side, turn the left screw clockwise. This will return the tracking toward the right.

6.A positioning wheel (Figure 14) has been provided on the right and left sides of the conveyor belt to limit the belt tracking. When adjusting the tracking, the conveyor belt should be moved until its edge just touches the positioning wheels.

7.Allow the sander to run for several minutes while observing the conveyor belt tracking and readjust if necessary.

8.Turn off the conveyor belt and re-install emergency stop cover.

9.9Feed Rate

The feed rate is infinitely variable within the provided range, in order to meet the sanding requirements of a wide variety of materials. Selecting a proper feed rate is largely a matter of experience. In general, soft woods require a higher feed rate, while hard woods require a lower feed rate.

Change the feed rate only while the conveyor belt is running. Failure to comply may cause damage to the gearbox.

Adjust the feed rate with the selector knob on the worm gear reducer (Figure 15). Turn the selector knob clockwise to decrease the conveyor belt speed, counterclockwise to increase it.

9.10Pressure Bar Adjustment

The front and rear sets of pressure bars have been factory adjusted. This setting should, however, be checked before operating the sander.

The pressure bars should be parallel to the conveyor table with equal pressure on each end, and are set slightly below the level of the sanding belt.

Figure 14

Figure 15

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Contents Wide Belt Sanders Warranty and Service Warranty PeriodTable of Contents Pressure Bar Assembly Models WB-25, WB-37, WB-43 16.8.2 Safety warnings Safety warnings Introduction Specifications 1790843Contents of Shipping Container UnpackingAir Supply Connection AssemblyDust Collection Electrical Installing/Replacing Sanding BeltGrounding Instructions 230 Volt Operation Model WB-25 shownAdjustments 460 Volt ConversionExtension cords Sanding Belt Tracking OscillationOscillation Air Flow Oscillation SpeedPlaten Position Belt Tension and ReplacementReplacing Graphite and Felt Pad Conveyor Belt Tension Conveyor Belt TrackingPressure Bar Adjustment Feed RateTable Parallelism Amperage Meter Operating ControlsLED Controller and Keypad Operation Braking SystemMaintenance Dust Port LayoutTroubleshooting the Sander TroubleTrouble Troubleshooting the LED Unit Replacement PartsBase and Motor Assembly Model WB-25 only Parts List Base and Motor Assembly Model WB-25 Index No. Part No Description Size QtyBase and Motor Assembly Model WB-37 only Parts List Base and Motor Assembly Model WB-37 Base and Motor Assembly Model WB-43 only Parts List Base and Motor Assembly Model WB-43 Upper Cabinet Assembly Model WB-25 only Parts List Upper Cabinet Assembly Model WB-25 Upper Cabinet Assembly Models WB-37, WB-43 Parts List Upper Cabinet Assembly Model WB-37 Parts List Upper Cabinet Assembly Model WB-43Table Raising Assembly Models WB-25, WB-37, WB-43 Parts List Table Raising Assembly Model WB-25 Parts List Table Raising Assembly Model WB-37 Parts List Table Raising Assembly Model WB-43 Hex Screw 12x4 Table and Conveyor Belt Assembly Models WB-25, WB-37, WB-43 Parts List Table and Conveyor Belt Assembly Model WB-25 WB25-IRAParts List Table and Conveyor Belt Assembly Model WB-37 WB37-IRAParts List Table and Conveyor Belt Assembly Model WB-43 WB43-IRAPressure Bar Assembly Models WB-25, WB-37, WB-43 Parts List Pressure Bar Assembly Model WB-25Parts List Pressure Bar Assembly Model WB-37 Parts List Pressure Bar Assembly Model WB-43Platen Assembly Model WB-25 only Parts List Platen Assembly Model WB-256290294 Platen Assembly Models WB-37, WB-43 Parts List Platen Assembly Model WB-37Parts List Platen Assembly Model WB-43 WB43-717 Air Regulator Assembly Models WB-25, WB-37, WB-43 Parts List Air Regulator Assembly Model WB-25Parts List Air Regulator Assembly Model WB-37 Parts List Air Regulator Assembly Model WB-43 Sanding Belt and Accessories Models WB-25, WB-37, WB-43 Parts List Sanding Belt and Accessories Model WB-37 Parts List Sanding Belt and Accessories Model WB-25Parts List Sanding Belt and Accessories Model WB-43 Tension Roller Assembly Models WB-25 and WB-37 only Parts List Tension Roller Assembly Model WB-25 Parts List Tension Roller Assembly Model WB-37 Seal Tension Roller Assembly Model WB-43 only Parts List Tension Roller Assembly Model WB-43 WB43-163 Electrical Box Assembly Models WB-25 and WB-37 Parts List Electrical Box Assembly Model WB-25 Parts List Electrical Box Assembly Model WB-37 Electrical Box Assembly Model WB-43 only Parts List Electrical Box Assembly Model WB-43 Electrical Connections Models WB-25 and WB-37 onlyModel WB-43 only