Grizzly H2933 Instruction Manual page 10

440V Connection
This machine is prewired for 220V 3-phase power
but has the capability of operating on 440V power
with a minor conversion. The conversion consists
of replacing two overload relays and rewiring each
of the three motors.
Contact the Grizzly Order Desk at (800) 523-4777
to purchase the correct 440V conversion kit for
your model that includes the necessary two over-
load relays:
Model
H2933 .........................................PH29339139V2
H2934 ............................................. PH29349139
G0447 ............................................. PH29349139
G0581 ................................................P05819139
All wiring changes must be inspected by service
personnel or a qualified electrician before the
machine is connected to the power source. If, at
any time during this procedure you need help, call
Grizzly Tech Support at (570) 546-9663.
Note: When using a phase converter, the power
from the manufactured power leg (sometimes
called the wild wire) can fluctuate. Connect the
manufactured power leg to the S terminal to pre-
vent 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 sander to 440V:
1. DISCONNECT MACHINE FROM POWER!
2.
Open the electrical box located on the back of
the machine.
3.
On the transformer, remove the wire con-
nected to the 220V terminal and connect it to
the 440V terminal, as shown in Figures 7.
-10-
Replaces Page 14
Part Number
4.
5.
0
1 0v 380v
3
2
E 0v
Figure 7. 440V transformer connections.
Swap out the applicable overload relay at
the locations shown in Figure 8, and set the
amperage dial to values listed in Figure
H2933
LR3D21
LR3D07
Set to:
(1.7A)
LR3D325
Set to:
(18A)
LR3D21 LR3D08
Set to: Set to:
(16A) (3A)
Figure 8. Overload relays for 440V.
Wire the sanding belt, conveyor belt, and
table elevation motors as shown in the dia-
grams on Page 55
of the owner's manual.
H2933, H2934, G0447, & G0581 Update
H2933
H2934
415v 440v
G0447
200v 220v G0581
8.
H2934
G0447
Set to:
(12.5A)
LR3D07
Set to:
(1.7A)
G0581
(Mfd. Since 1/14)