Southbend Power Connection, 220V Conversion for SB1021, SB1021 110V Prewired Power Source

Model SB1021/SB1022 P R E P A R A T I O N For Machines Mfg. Since 8/09

Power Connection

Electrocution or fire may occur if machine is ungrounded, incorrectly connected to power, or connected to an undersized circuit. Use a qualified electrician to ensure a safe power connection.

Once your machine is set up and assembled as previously described in this manual, it is ready to be connected to the power source.

Use the information in this section to determine the power source requirements needed to operate this machine. If your existing power source does not meet the stated requirements, consult with a qualified electrician about running a new circuit.

Note About Extension Cords: Using an incorrectly sized extension cord may decrease the life of electrical components on your machine.

Note About 3-Phase Power (SB1022 Only): DO NOT use a static phase converter to create

3-phase power—it can quickly decrease the life of electrical components on your machine. If you must use a phase converter, only use a rotary phase converter and connect the wild wire to the correct power connection terminal, shown in the wiring diagram on Page 47.

220V Conversion for SB1021

Wiring diagrams are provided on Pages 44 and 46 in this manual, showing the Model SB1021 wired for both 110V and 220V. Refer to these diagrams when following this procedure.

To convert the Model SB1021 to operate on 220V:

1.DISCONNECT BANDSAW FROM POWER!

2.Rewire the motor for 220V, as shown in the diagram on the inside of the motor junction box. If there is not a diagram in the junction box, use the motor wiring diagram in this manual (see Page 46).

3.Locate the power transformer in the electrical panel (see Page 48, Figure 50) and remove the wire attached to the 110V terminal and connect it to the 220V terminal.

4.Turn the dial on the overload relay (see Page 48, Figure 50) from 14A for 110V to 7A for 220V.

5.Locate the welding transformer in the control panel (see Page 48, Figure 49). Remove the wire connected to the #2 terminal and move it to the #5 terminal; remove the wire connected to the #4 terminal and move it to the #7 terminal.

6.The machine is now wired for 220V.

SB1021 110V (Prewired) Power Source

Full Load Amp Draw	13.6 Amps
Permissible Voltage Range	99V–121V
Phase	Single-Phase
Frequency	60 Hz
Minimum Circuit Size	20 Amps
Included Plug	NEMA 5-15
Minimum Extension Cord Size	14 AWG
Maximum Extension Cord Length	50 ft.

SB1021 (220V) Power Source

Full Load Amp Draw	6.8 Amps
Permissible Voltage Range	198V–242V
Phase	Single-Phase
Frequency	60 Hz
Minimum Circuit Size	15 Amps
Recommended Plug/Receptacle	NEMA 6-15
Minimum Extension Cord Size	14 AWG
Maximum Extension Cord Length	50 ft.

SB1022 (220V 3-Phase) Power Source

Full Load Amp Draw	3.6 Amps
Permissible Voltage Range	198V–242V
Phase	3-Phase
Frequency	60 Hz
Minimum Circuit Size	15 Amps
Recommended Plug/Receptacle	NEMA L15-15
Minimum Extension Cord Size	16 AWG
Maximum Extension Cord Length	50 ft.

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