Powermatic WB-25, WB-37, WB-43 operating instructions Oscillation Air Flow, Oscillation Speed

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may result in incorrect tracking. If this occurs, the oscillation timing can be set to compensate.

1.Adjust oscillation while the machine is running. Turn on the air valve switch and press the sanding belt start button (see Figure 19).

2.The upper roller will pivot left and right. The duration of the sanding belt’s oscillation to the right side and to the left should be equal. For example, if the oscillation time to the right is one second, then the oscillation time to the left should also be one second.

3.If the oscillation time to the right side is one second, but the oscillation time to the left side is longer, then loosen the tracking adjustment lever (rotate it counterclockwise) and move it to the left until proper timing is achieved. See Figure 7.

4.When finished, tighten the tracking adjustment lever.

5.If the oscillation time to the left side is one second, but the oscillation time to the right side is longer, then loosen the tracking adjustment lever and move it to the right until proper timing is achieved. Tighten the tracking adjustment lever.

9.2Oscillation Air Flow

For correct sanding belt oscillation, there must be adequate air flow through the holes of the oscillation bracket (Figure 8). When the sanding belt is operating, its edge will pass over the holes in the oscillation bracket. The blocked air flow will cause a sensor to activate the tracking cylinder, which pivots the upper roller and shifts the belt back out, causing it to leave the air flow. This process will continually repeat itself.

If there is inadequate air flow, the sanding belt will track too far and contact a limit switch. Adjust the air flow using the air flow control knob (Figure 9). Loosen the jam nut and rotate the knob clockwise to decrease air flow, counterclockwise to increase air flow. Tighten the jam nut to lock the setting.

Frequently inspect the holes in the oscillation bracket – make sure they are clean and clear of obstructions.

9.3Oscillation Speed

To adjust the speed of the oscillation, loosen the jam nut on the speed control knob (Figure 9), then turn knob clockwise to decrease oscillation speed or counterclockwise to increase oscillation speed. When finished, tighten jam nut.

Figure 7

Figure 8

Figure 9

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Contents Wide Belt Sanders Warranty Period Warranty and ServiceTable of Contents Pressure Bar Assembly Models WB-25, WB-37, WB-43 16.8.2 Safety warnings Safety warnings 1790843 Introduction SpecificationsUnpacking Contents of Shipping ContainerAir Supply Connection AssemblyDust Collection Electrical Installing/Replacing Sanding BeltGrounding Instructions Model WB-25 shown 230 Volt Operation460 Volt Conversion AdjustmentsExtension cords Sanding Belt Tracking OscillationOscillation Speed Oscillation Air FlowPlaten Position Belt Tension and ReplacementReplacing Graphite and Felt Pad Conveyor Belt Tracking Conveyor Belt TensionFeed Rate Pressure Bar AdjustmentTable Parallelism Amperage Meter Operating ControlsLED Controller and Keypad Braking System OperationDust Port Layout MaintenanceTrouble Troubleshooting the SanderTrouble Replacement Parts Troubleshooting the LED UnitBase and Motor Assembly Model WB-25 only Index No. Part No Description Size Qty Parts List Base and Motor Assembly Model WB-25Base 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-43 Parts List Upper Cabinet Assembly Model WB-37Table 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 WB25-IRA Parts List Table and Conveyor Belt Assembly Model WB-25WB37-IRA Parts List Table and Conveyor Belt Assembly Model WB-37WB43-IRA Parts List Table and Conveyor Belt Assembly Model WB-43Parts List Pressure Bar Assembly Model WB-25 Pressure Bar Assembly Models WB-25, WB-37, WB-43Parts List Pressure Bar Assembly Model WB-43 Parts List Pressure Bar Assembly Model WB-37Parts List Platen Assembly Model WB-25 Platen Assembly Model WB-25 only6290294 Parts List Platen Assembly Model WB-37 Platen Assembly Models WB-37, WB-43Parts List Platen Assembly Model WB-43 WB43-717 Parts List Air Regulator Assembly Model WB-25 Air Regulator Assembly Models WB-25, WB-37, WB-43Parts 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 Models WB-25 and WB-37 only Electrical ConnectionsModel WB-43 only