Powermatic WB-25, WB-37 Electrical, Installing/Replacing Sanding Belt, Grounding Instructions

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7.3Installing/Replacing Sanding Belt

1.Machine should be disconnected from power source.

2.Turn the air valve switch (A, Figure 3) to Off position.

3.Remove the lock screw (B, Figure 3) by turning it counterclockwise and lifting up.

4.Remove the spacer block (C, Figure 3).

5.Inspect the sanding belt for defects such as chipped or torn edges. Do not use a belt if it is damaged.

Make sure the direction of the arrows on the inside of the sanding belt matches the rotation of the machine. See Figure 4.

6.Install the new belt by placing it first over the upper roller, then over the free and contact rollers, and slide the belt all the way onto the rollers.

7.Center the belt while avoiding contact with the limit switch fingers that are located on each side of the belt.

8.Re-install the spacer block (C, Figure 3) and lock screw (B, Figure 3) and tighten the lock screw by turning clockwise.

9.Turn the air valve switch (A, Figure 3) to ON to tension the sanding belt.

10.Make sure there is clearance between sanding belt edges and the limit switch fingers on either side. If there is not, make the appropriate corrections (with the air valve turned OFF).

NOTE: The sander will not start if a limit switch is engaged.

11.Before doing any sanding, the sanding belt should be tested for proper tracking and oscillation. See the appropriate sections in this manual.

8.0Electrical

8.1Grounding Instructions

Electrical connections must be made by a qualified electrician in compliance with all relevant codes. This machine must be properly grounded while in use to help protect the operator from electrical shock and possible fatal injury.

In the event of a malfunction or breakdown, grounding provides a path of least resistance for

Figure 3

Figure 4

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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 shownExtension cords Adjustments460 Volt Conversion 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