Powermatic 1285 operating instructions Voltage Conversion, Extension cords

8.1Voltage Conversion

The Model 1285 Jointer is wired for 1-phase, 230 volt only; or 3-phase, 230/460 volt. The 3- phase model is pre-wired at the factory for 230 volt. However, if you wish to convert your 3- phase jointer from 230 volt to 460 volt, proceed as follows:

1.Disconnect machine from power source.

2.Remove cover from junction box, and open the side door on the stand.

3.Change the wires in the junction box by following the diagram on the inside of the junction box cover, or the diagram found at the back of this manual.

4.Replace the 230 volt contactor (see Figure

7)with the 460 volt contactor (stock no. PJ1285-109B). The 460 volt contactor is available through your authorized Powermatic distributor, or by calling 1-800- 274-6848.

5.If you are using a plug on the jointer’s power cord, install an appropriate 460 volt plug.

6.After wiring for the new voltage, turn on the machine and observe the rotation of the cutterhead; it should rotate clockwise when viewed from the front of machine. If it rotates counterclockwise, disconnect jointer from power source and switch any two of the three wires at the junction box.

7.Close junction box and reconnect power.

8.2Extension cords

The use of an extension cord is not recommended, but if one is 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.

Use the chart in Figure 8 as a general guide in choosing the correct size cord. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

Figure 7

Figure 8

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