Grizzly 37'' WIDE BELT G0571 Instruction Manual page 4

440v connection
(G0446/G0539)
to connect this machine to 440v three-phase,
you must purchase one lr3d076 overload relay
and one lr3d325 overload relay.
if you do not have three-phase power available to
the g0446/g0539 sander, you will have to install a
phase converter such as the grizzly h3741 phase
Converter.
when using a phase converter, the power from
the manufactured power leg (sometimes called
the wild wire) can fluctuate. Connect the manu-
factured power leg to the s terminal to prevent
damage to the transformer. the wire from the s
terminal can handle some fluctuation because it
goes directly to the motor. the power going to the
r and t terminals goes to the transformer and
must be consistent to prevent damage.
to wire the Model G0446/G0539
1. Disconnect the sander from the power
source!
2. open the electrical box located on the back of
the machine.
3. remove the wire labeled "1" at the 220v
terminal of the control power transformer
(figure 7) and connect it to the 440v termi-
nal.
TRANSFORMER
0
440V 0
0
figure 7. the "1" wire should be connected to
the 440v terminal.
g0446, g0539, g0571 (mfg. since 9/10)
Replaces Page 13
to 440v:
200V 220V
2 3 1
4.
remove the lr3d340
8), and replace it
with an lr3d325 (17-25A)
type, with the dial set to 18A.
transformer
lr3d325
figure 8. overload relay.
5.
remove the lr3d086 overload relay (figure
8), and replace it with an
type, with the dial set
6. wire the sanding belt, conveyor belt, and
table elevation motors as shown on the
diagrams on the inside of each motor wire
cover.
note: The circled references on the diagrams
represent labels on the wires. Also, Figure 9
below has been provided for your reference
and is current at the time of writing. However,
always use the diagram on the wire cover
that comes with your motor!
SANDING MOTOR
W5
U5 V5
TABLE UP/DOWN MOTOR
U2 V2
U2 V2
W2
V5
U5
W6
U6 V6
U1 V1
V1
W1
U1
440V 440V
figure 9. 440v motor wiring connection.
overload relay (figure
lr3d076
lr3d076 (1.6-2.5A)
to 1.7A.
CONVEYOR MOTOR
W2
U2 V2
W2
V5
U5 W5
W5
U1 V1 W1
W1
440V
-3-