Southbend 6" x 18" SURFACE GRINDER SB1029 - Manual (Page 42)

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For Machines Mfg. Since 8/09 Model SB1029 E L E C T R I C A L
Rewiring for 440V
Items Needed Qty.
440V Conversion Kit (Part No. PSB1029510) ..... 1
Phillips Screwdriver #2 ........................................ 1
To convert the Model SB1029 to operate on
440V:
1. DISCONNECT MACHINE FROM POWER!
2. Open the motor junction box, then loosen
the nine screws that secure the wires and
jumpers to the motor junction block shown in
Figure 53.
Figure 53. 220V Jumper locations.
GND
U
1
2
3
4 6
7
8 9
V W
oto
5
Jumpers
Figure 52. Power connection wiring.
T S R U1 W V U 0 7 6
GND
6 7 0 U
U
V
V R S T
R S T W W1 V1 U1
W 0
W1 V1 U1
Incoming
Power Cord
Wiring diagrams are provided in this section
showing the Model SB1029 wired for both 220V
and 440V. Refer to these diagrams if needed
when following this procedure. Additionally,
you must purchase 440V Conversion Kit (Part
No. PSB1029510) in order to complete the
conversion.
Hardwire setups require power supply lines to
be enclosed inside of conduit that is securely
mounted and constructed in adherence to
applicable electrical codes.
A hardwire setup for this machine must be
equipped with a locking disconnect switch
as a means to disconnect the power during
adjustments or maintenance, which is a typical
requirement for lock-out/tag-out safety programs
(commonly required by OSHA). Figure 13 shows
a simple diagram of a hardwire setup with a
locking disconnect switch between the power
source and the machine.
Hardwiring to Power Source
Due to the complexity required for planning,
bending, and installing the conduit necessary for
a hardwire setup, this type of setup can only be
performed by an experienced electrician.
For Electrician: Connect the incoming power
wires as shown in Figure 13.
Power Source
Locking
Disconnect Switch Machine
Conduit Conduit
Figure 13. Typical hardwire setup with a locking
disconnect switch.
READ ELECTRICAL SAFETY
ON PAGE 39 FIRST!