Powermatic WB-37, WB-25, WB-43 Adjustments, 8.3 460 Volt Conversion, Extension cords

Models: WB-43 WB-25

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8.3460 Volt Conversion

5.Press the Up S or Down T button on the keypad (see page 18 for detailed keypad instructions). Make sure the conveyor table moves in the same direction as indicated on the button.

6.If the conveyor table moves in the wrong direction, turn off the machine and disconnect from power. Switch any two of the three incoming power leads at R,S,T.

7.Re-connect power to the sander.

8.3460 Volt Conversion

To convert the sander to 460V:

1.Disconnect sander from power source.

2.In the electrical cabinet, switch the “R” wire on the transformer from the 220V to the 440V terminal. See Figure 6. (Refer to the wiring diagram on the inside cover of the electrical box for clarification.)

3.Replace two 230V overload relays with two 460V overload relays (not included; see

parts list for stock numbers).

Figure 6

4.Change the wiring at the main motor, the conveyor table motor, and the table elevating motor, according to the wiring diagrams inside their respective junction boxes.

5.If using a plug, install a UL/CSA-listed plug appropriate for 460V operation.

8.4Extension cords

The use of an extension cord for this sander is discouraged, because of the machine’s high amperage draw. If an extension cord becomes necessary, make sure the cord rating is suitable for the amperage listed on the machine’s motor plate. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating.

9.0Adjustments

9.1Sanding Belt Tracking and

Oscillation

The sanding belt should oscillate left and right without a tendency to slide off the rollers. If the sanding belt runs outside of the normal track, it will contact a limit switch and the machine will stop automatically.

The oscillation settings have been made at the factory, but should be checked by the operator. NOTE: When a new sanding belt is installed, there may be a slight length tolerance between the right and left sides of the sanding belt which

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Powermatic WB-37, WB-25, WB-43 Adjustments, 8.3 460 Volt Conversion, Extension cords, Sanding Belt Tracking and Oscillation