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MOTOR
DRIVE
PULLEY
DRIVEN
PULLEY
PROPERLY
GROUNDED
RECEPTACLES
3-PRONG PLUG
Figure 5
BLACK
)GREEN
GROUND SCREW
POWER LEAD
POWER LEAD
RED
Figure 4
NOTE: In order to prevent accumulation of static
electric charges due to belt friction, the motor
frame or base should be grounded to a cold water
metal pipe which is continuous to earth ground.
A metallic connection should also be provided be-
tween the motor and the device being driven.
STRAIGHT EDGE
Figure 2
Figure 3
CONNECTING THE MOTOR
CAUTION: This motor will be damaged if con-
nected to a current source other than the voltage
and frequency specified on the nameplate.
1. The motor must be operated on single-phase, 115-volt,
60-cycle ac power when connected as outlined in in-
structions that follow. Wires are color coded to make
connections easy to accomplish.
2. Connections between motor and power source should
be made through a switch and fuse block. Use a 20
ampere fuse preferably of the delayed-action type.
3. The wire sizes listed below are recommended for cir-
cuit connections between motor and power supply.
Length of
Wire Size Required
Two-Conductor Extension (American Wire Gauge No.)
100
feet or less
No.
10
100
feet to 150 feet
No. 8
150 feet to 200 feet
No. 6
200 feet to 400 feet
No. 4
NOTE: For circuits of greater length, the
wire size
must be increased proportionally.
4. A 48-inch, 3-conductor (center ground wire) cord and
plug assembly is attached at the factory, with the two
power leads connected to the quick connect tabs adja-
cent to terminal posts
"T1"
and
"T4".
(See figure
4.)
In
event this cord is removed and the motor wired for
a permanent installation, connect one power lead to
terminal
"T1"
(or quick connect tab adjacent to it).
Connect the other power lead to terminal
"T4" (or
quick
connect tab adjacent to it). Connect the ground
wire to the green ground screw located just under the
terminal cover.
5. The Black and Red motor leads are connected to
quick connect tabs "A" and
"B" on
terminal board.
(See figure 4.)
NOTE: To reverse direction of rotation, inter-
change position of Black and Red motor leads.
WARNING: Do not change any of these connec-
tions with current on.
6. This motor is equipped with a 3-prong connector plug
as a safety measure. The longest of the three prongs
is connected to the motor housing through the power
cord. Be certain the plug is inserted into a properly
grounded receptacle. When using an extension cord,
make sure it is also a 3 wire cable. (See figure 5.)
CAUTION: MAKE SURE RECEPTACLE IS
PROPERLY GROUNDED.
LUBRICATION AND MAINTENANCE
1. The sleeve bearings, in both end shields of the motor,
have been lubricated at the factory with correct lubri-
cant. No other part of the motor requires lubrication.
2. Re-lubricate motor bearings in accordance with the
instructions on the nameplate. (See figure 1.) Be sure
to wipe off dirt or grit if present around oil holes to
prevent any possibility of foreign material contami-
nating the oil wicks that supply the bearings with oil.
Use a good grade of medium weight mineral oil, such
as automobile engine oil, SAE 20.
3. If disassembly of the motor is necessary, it should be
returned to your nearest Sears retail or mail-order store
in order to prevent voiding the guarantee.
NOTE: The speed of this motor cannot be regu-
lated or changed.
4. Every effort should be made to prevent foreign ma-
terial from entering the motor. When operated under
conditions likely to permit accumulations of dust,
dirt, or waste within the motor, a visual inspection
should be made at frequent intervals. Accumulations
of dry dust can usually be blown out successfully.
NOTE: Motors used on wood-working tools are
particularly susceptible to the accumulation of saw-
dust and wood chips and should be blown out or
"vacuumed" frequently to prevent interference
with normal motor ventilation and proper opera-
tion of the centrifugally-operated starting switch.
5. Many motor troubles may be traced to loose or incor-
3
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