480V Conversion - Grizzly G0449 Owner's Manual

480V Conversion

The Model G0450 can be converted for 480V
operation. This conversion job consists of discon-
necting the sander from the power source, replac-
ing the existing control box 240V main panel with
a 480V main panel and rewiring the sanding
motor and feed motor.
The G0450 480V Conversion Kit (Part Number
P0450753), which includes the necessary 480V
main panel, can be purchased by calling Grizzly
Customer Service at (800) 523-4777.
All wiring changes must be performed by an elec-
trician or qualified service personnel. If, at any
time during this procedure you need help, call
Grizzly Tech Support at (570) 546-9663.
To rewire the Model G0450 for 480V operation:
1.
DISCONNECT POWER TO SANDER!
2.
Rewire both the sanding drum and feed
motors according to the diagrams on the
inside of the junction box cover.
Note: These drawings are also shown on
Pages 63–64 for your reference, but always
use the drawings in the junction box cover, as
they will reflect any changes to the machine
since this manual was printed.
3.
Remov the control panel cover and familiarize
yourself with Figure 89 on Page 59 for com-
ponent locations.
4. Keeping track of the wire locations, discon-
nect all power and motor wires, so the main
panel can be completely removed (the main
panel is the board all electrical components
are mounted to).
Model G0449/G0450 (Mfd. Since 8/13)
5.
Remove the four cap screws (one in each
corner) that secure the 240V main panel, then
replace it with the 480V main panel from the
480V conversion kit (see Figure 3).
Figure 3. G0450 control box main panel,
3-phase 480V.
6.
Connect the power and motor wires to the
480V main panel in the same manner that
they were removed from the 240V main
panel.
7.
Make sure the thermal overload relays are set
to the following values for 480V as shown in
Figure 4:
Feed Motor Relay = 0.8A
Sanding Motor Relay = 20.7A
Sanding Motor
Overload Relay
Figure 4. G0450 3-phase 480V thermal overload
relay values.
8.
Replace the control panel cover.
Feed Motor
Overload Relay
-13-