Converting Voltage To 220V - Grizzly G9743 Owner's Manual

7"x12" gearhead metal-cutting bandsaw
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Converting Voltage
to 220V
The voltage conversion MUST be performed by
an electrician or qualified service personnel.
The voltage conversion procedure consists of
rewiring the main and coolant motors, replac-
ing the circuit breaker, rewiring the transformer,
replacing the overload relay, and installing the
correct plug. Wiring diagrams are provided in
the WIRING section, beginning on Page 54, for
reference.
IMPORTANT: If the diagram included on either
motor conflicts with the one in the WIRING sec-
tion, the motor may have changed since the
manual was printed. Use the diagram included on
the applicable motor junction box cover instead.
Items Needed
Phillips Head Screwdriver #2 ............................ 1
Wire Nut (14AWG x 3) ....................................... 1
Electrical Tape ................................... As Needed
Circuit Breaker 12A (P9743300V4-10X) ............. 1
Wrench or Socket
" ....................................... 1
5
16
Overload Relay TECO
RHU-10/12.5K1 (P9743261V5-10X).................... 1
Wire Stripper ..................................................... 1
Ground
Plug 6-15 ........................................................... 1
To convert Model G9743 to 220V:
1.
DISCONNECT MACHINE FROM POWER!
2.
Open main motor junction box.
3.
Remove wire nuts on main motor, as indi-
cated in Figure 10.
Thermal
Overload
Relay
TECO
RHU-10/30K2
Model G9743 (Mfd. Since 10/23)
Rewired for 220V
Circuit Breaker
KUOYUH
98 SERIES 12A
LINE
LOAD
V1
1
2
3
4
U1
V1
Ground
Qty
Transformer
TBSM RF-017
(Prewired) (Rewired)
0V 110V
220V
N
L
L
7
0
7
3
N
L
1L1
3L2
5L3
Contactor
TECO
CU-18
2T1
4T2
6T3
4
30A
4
4
28
26
24.5
97NO 98NO
95NC 96NC
2T1
4T2
6T3
V1
U1
V2
U2
Remove
Figure 10. Location of wire nuts to remove.
(Rewired for 220V)
4.
Connect main motor wires with wire nuts, as
shown in Figure 11. Once snug, wrap electri-
cal tape around each wire nut and connected
wires to reduce likelihood of wire nut vibrating
loose during motor operation.
5.
Replace pre-installed 25A circuit breaker with
a 12A circuit breaker (see Figure 11).
Rewired for 220V
V1
Ground
4
4
3
2
U1
V1
Figure 11. Main motor rewired for 220V
6.
Close and secure main motor junction box.
1
0
1
7.
Open pump motor junction box.
2
U2
V2
V2
Pump ON/OFF Switch
N
L
MAIN MOTOR
Prewired for 110V
Circuit Breaker
KUOYUH
98 SERIES 25A
LINE
LOAD
V1
1
2
4
3
Remove
U1
V1
Ground
Circuit Breaker
KUOYUH
12A Breaker
98 SERIES 12A
LINE
LOAD
1
2
3
(Rewired for 220V)
U1
V1
Ground
operation.
U2
SCI R13-25A
Hot
220
Do
Lim
Prewired for 110V
PUMP MOTOR
Rewired for 220V
(Rewired for 220V)
Neutral
Hot
-13-
Ground
1
3

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