Rewiring to 440V
Converting the Model G0503 to 440V operation consists of 1) wiring the voltage transformer, 2) rewiring the main motor and the hydraulic pump motor, and 3) replacing the
Electrocution or fire may occur if your con- version does not comply with local and state codes. Have your wiring conversion inspected by a qualified electrician before connecting your machine to power.
To convert the Model G0503 to 440V:
1.Disconnect the resaw from the power source!
2.Open the electrical box and locate the volt- age transformer shown in Figure 68.
6.Remove the wiring covers on the main and hydraulic pump motors.
7.Wire the main and hydraulic pump drive motors as shown on the diagrams on the inside of each motor wire cover. Note—
Figures 69 & 70 are provided for reference and are current at the time that this manual was written. However, always use the dia- gram on the wire cover that comes with your motor! The circled references on the dia- grams represent the labels on the wires.
L1 L2 L3
220V POWER
Figure 69. Main motor 440V wiring.
Voltage Transformer
L1 L2 L3
440V POWER
Siemens Motor
Only
U1, U2 Orange
V1, V2 Black
W1, W2 Red
Figure 68. Inside of electrical box.
3.Move the wire from the 220V terminal on the voltage transformer to the 440V or 480V ter- minal depending on your voltage.
4.Replace the main motor relay with the 440V relay and set the dial to “30.”
5.Replace the hydraulic pump motor relay with the 440V relay and set the dial to “3.6.”
Model G0503 (Mfg. Since 12/08)
Figure 70. Elevation motor 440V wiring.
8.Replace any wire duct covers and motor caps you might have removed during this proce- dure, and close the electrical box door.
9.Have a qualified electrician inspect your work before test running the machine.
