14
Converting
f
rom 230 Volt to 460 Volt
(Three Phase Only)
Consult the wiring diagram inside the starter box
cover. A similar diagram is also included at t he
back of this manual. The sander must comply
with all local and national codes after bei ng
wired.
1. Replace the current contactor with the 460V
magnetic contactor (part no. 31A-MSA-2;
purchased separately).
2. Re-connect the incoming leads to the motor
in accordance with 460 volt operation, as
shown in the wiring diagram.
3. If using a plug, install a proper UL/CSA
listed plug suitable for 460 volt operation.
Three-Phase Test Run
On the three-phase unit, after wiring has been
completed, you should check that the wires
have been connected properly:
1. Connect mac hine to power source and
press the start button.
2. The sanding disc and belt should move in
accordance with the arrow directions on the
machine. If the movement is backward, stop
the machine and disconnect machine
from power.
3. Switch any two of the three wires at "R,S,T".
Grounding Instructions
(Refer to page 7 for more information on
grounding this machine.) This machine must be
grounded. In the event of a malfunction or
breakdown, grounding provides a path of least
resistance for electric current to reduce the risk
of electric shock.
Improper connection of the equipment-
grounding conductor can result in a risk of
electric shock. The conductor with insulation
having an outer surface that is green with or
without yellow stripes, is the equipment-
grounding conductor. If repair or replacem ent of
the electric cord or plug is necessary, do not
connect the equipment-grounding conductor to a
live terminal.
Check with a qualified electrician or servi ce
personnel if the grounding instructions are not
completely understood, or if in doubt as to
whether the tool is properly grounded.
Repair or replace a damaged or worn cord
immediat ely.
An extension cord is not recommended; if
possible, position your Sander within reach of
the power supply. If an extension cord becomes
necessary, make sure the cord rating is suitable
for the amperage listed on the machine’s motor
plate. An undersize cord will cause a drop i n l ine
voltage resulting in loss of power and
overheating.
Use the chart in Figure 14 as a general guide in
choosing the correct size cord. If in doubt, use
the next heavier gauge. The smaller the gauge
number, the heavier the cord.
Recommended Gauges (AWG) of Extensi on Co rd s
Amps
Extension Cord Length *
25
feet 50
feet 75
feet 100
feet 150
feet 200
feet
< 5 16 16 16 14 12 12
5 to 8 16 16 14 12 10 NR
8 to 12 14 14 12 10 NR NR
12 to 15 12 12 10 10 NR NR
15 to 20 10 10 10 NR NR NR
21 to 30 10 NR NR NR NR NR
*based on limiting the line voltag e dr op to 5V at 15 0% of th e
rated amperes.
NR: Not Recommended.
Figure 14