Sears Craftsman 113.248211 Owner's Manual page 38

trouble shooting--motor
BOTH MODELS
NOTE: Motors used on wood-working tools are particularly susceptible to the
accumulation of sawdust and wood chips and should be blown out or "vacuumed"
frequently to prevent interference with normal motor ventilation and proper
operation of the centrifugally-operated starting switch.
TROUBLE I
Excessive noise. 1.
Motor fails to develop
full power. NOTE:
LOW VOLTAGE: (Power
output of motor
decreases rapidly with
decrease in voltage at
motor terminals. For
example, a reduction of
10% in voltage causes
a reduction of 19% in
maximum power output
of which the motor is
capable, and a reduction
of 20% in voltage causes
a reduction of 36% in
maximum power
output.)
'Motor starts slowly
or fails to come up
to full speed.
i
Motor overheats.
Starting switch in
motor will not operate.
Motor stalls
(resulting in blown
fuses or tripped
circuit breakers).
PROBABLE CAUSE
Motor.
.
Circuit overloaded with
lights, appliances and
other motors,
Undersize wires or circuit
too long.
General overloading of
power conqpany
facilities,
11 LOW
voltage.
2. Windings burned out
or open,
3. Starting switch not
operating.
1. Motor overloaded.
2. mproper cooling (Air
circulation restricted
through motor due to
sawdust accumulation.
1.
.
3.
Burned switch contacts
(due to extended hold-in
periods caused by low line
voltage, etc.)
Shorted capacitor.
Loose or broken
connections,
1. Starting switch not
operating.
' 2. Voltage too _ow to permit
motor to reach operating
speed.
,3. Fuses or circuit breakers
J do not have sufficient
capacity,
Frequent opening of
! fuses or circuit
breakers.
REMEDY
1, Have motor checked by qualified service
technician, Repair service is available at your
nearest Sears store.
1. Do not use other appliances or motors on
same circuit when using the saw.
2. Increase wire sizes, or reduce length of wiring.
See "Motor Specifications and Electrical
Requirements" section.
3. Request a voltage check from the power
company.
1. Request voltage check from the power
company. Check size of circuit wiring.
2, Have motor repaired or replaced.
3. Biow out sawdust from motor. Have motor
repaired,
1. Feed work slower into blade,
2. Clean out sawdust to provide normal air
circulation through motor. See "Maintenance
and Lubrication" section.
1. Have switch replaced and request a voltage
i check from the power company.
i 2. Have capacitor tested and replace if defective.
3, Have wiring checked and repaired.
1. Have switch replaced.
2. Request voltage check from the power
company.
3, Install proper size fuses or circuit breakers
t. Motor overloaded, i I, Feed work siower into blade.
2, Fuses or circuit breakers i 2. Install proper size fuses or circuit breakers
do not have sufficient Check that wiring will handle load
capacity.
3. Starting switch not 3. Have switch replaced. Blow out sawdust.
operatir_g (motor does not
reach speed).
38
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