Motor Safety Protection; Wire Sizes - Sears 113.29461 Owner's Manual

electrical connections
3. Connections for 240V A.C. (Figure 32)
a. The wires inside the motor terminal box must be
connected as fo!lows:
(1) The orange-colored wire on number 8 terminal.
(21 The brown-colored wire on number 7 terminal.
b. Replace the 120V power-cord plug with a (3-blade)
240V plug, connecting the power-cord white and
black leads, respectively, to the two "hot" plug
blades - and connecting the power-cord grounding
wire to the third (neutral) plug blade.
c. Plug your saw into a 240V, 3-blade receptacle.
d. Make certain the receptacle is connected to a 240V
A-C power supply through a 240V branch circuit
having at least a 15-amp. capacity, and protected by
a 15 amp. time-delay fuse or circuit breaker.
Figure 32
As soon as the red button will snap into running
position, the saw may be started and operated normally,
by pulling out the saw switch to the "'ON" position.
Frequent opening of fuses or circuit breakers may result
if motor is overloaded, or if the motor circuit is fused
different!y from recommended. Overloading can occur if
you feed too rapidly or if your saw is misaligned so that
the blade heels. Do not use a fuse of greater capacity
without consulting the power company.
Although the motor is designed for operation on the
voltage and frequency specified on motor nameplate,
normal loads will be handled safely on voltages not more
than 10% above or below the nameplate voltage. Heavy
loads, however, require that voltage at motor terminals
equals the voltage specified on nameplate.
Most motor troubles may be traced to loose or incorrect
connections, overloading, reduced input voltage Isuch as
small size wires in the supply circuit) or to an
overlylong supply circuit. Always check the connec-
tions, the load and the supply circuit, whenever the
motor fails to perform satisfactorily. Check wire sizes
and lengths with the table following.
FOR U3E ON I?-0V 240V
ORANGE
LEAD
ON 6 _t_
I_ROWN LEAD ON ,5 7
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BROW ORANGE
MOTOR SAFETY PROTECTION
NOTE: This motor should be blown out, or
"vacuumed", frequently to prevent sawdust
interference with normal motor ventilation.
Your saw motor is equipped with a manual-reset, thermal-
overload protector designed to open the power-line circuit
when the motor temperature exceeds a safe value (figure
33).
1. If the protector opens the line and stops the saw motor,
immediately press the saw switch to the "OFF" posi-
tion, and allow the motor to cool.
2. After cooling to a safe operating temperature, the
overload protector can be closed manually by pushing in
the red button on the top of the motor. If the red
button will not snap into place immediately, the motor
is still too hot and must be allowed to cool for a while
longer. (An audible click will indicate protector is
closed.)
U
_ ---4" \-_
,. I I_.j-T---
.L.... _ r
OVERLOAD PROT_ MOTOR
NAMEPLATE
Figure 33
WIRE SIZES
Length of the
Conductor
50 feet or less
100 feet or less
100 feet to 150 feet
150 feet to 200 feet
200 feet to 400 feet
The following table lists recommended wire sizes for
connecting the motor to the power source. These sizes
should be maintained for trouble-free operation of the saw.
If an extension cord is used, it should be a 120V or 240V,
3-wire type designed for ]rounding the tool.
Wire Size Required
(American Wire Gauge Number)
240 Volt Lines 120 Volt Lines
_114 NO. 12-
No. 12 No. 10
No. 10 No. 8
No. 8 , No 6
No. 6 i No. 4
I
NOTE:
For circuits of greater length, the wire
size must be increased proportionately in order
to deliver ample voltage to the saw motor.
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