Troubleshooting Chart - Motor - Sears Craftsman 113.23161 Owner's Manual

trouble-shooting
TROUBLE SHOOTING
NOTE: Motors used on wood-working tools
are particularly susceptible to the
accumulation of sawdust and wood chips
CHART-- MOTOR
and should be blown out or "vacuumed"
frequently to prevent interference with
normal motor ventilation.
TROUBLE
Motor will not run.
Motor will not run and
fuses ' BLOW."
Motor fails to develop
full power. (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.
while a reduction of 20%
in voltage causes a
reductton of 36% m
maximum power output.
Motor starts slowly or fails
to come up to full speed.
Motor overheats.
Starting relay in motor
will not operate.
Motor stalls resulting in
blown fuses or tripped
circuit breakers).
Frequent opening of fuses
or circuit breakers.
PROBABLE CAUSE
1. Protector open; circuit
broken.
2.
1.
2.
1.
2.
3.
4,
1.
2.
1.
2.
Low voltage.
Short circuit in line cord or
plug.
Short circutt m motor terminal
box or loose connections.
Power line overloaded with
lights, appliances and other
motors.
Undersize wires or circuit too
long.
General overloading of power
company's facilities. (In many
sections of the country, demand
for electrical power exceeds
the capacity of existing
generating and distribution
systems.)
Incorrect fuses in power line.
Low voltage--will not trip
relay.
Starting relay not operating.
Motor overloaded.
Improper cooling. (Air
circulation restricted through
motor due to sawdust, etc.)
1. Burned relay contacts (due to
extended hold-in periods
caused by low line voltage,
etc.)
2. Open relay cotl.
3. Loose or broken connections
in motor terminal box.
1. Starting relay not operating.
2. Voltage too low to permit
motor to reach operating
speed.
3. Fuses or c_rcuit breakers do
not have sufficient capacity.
1. Motor overloaded.
2. Fuses or circuit breakers do
not have sufficient capactty.
3. Starting relay not operating
(motor does not reach normal
speed.)
REMEDY
1. Reset protector by pushing in on red button, located
on top of motor junction box (indicated by audible
chck).
2. Check power line for proper voltage.
1. Inspect line cord and plug for damaged insulation
and shorted wires.
2. Inspect all terminals in motor terminal box for loose
or shorted terminals.
1. Reduce line load.
2. Increase wire sizes, or reduce length of wiring.
3. Request a voltage check from the power company.
4. Install correct fuses.
1. Correct low voltage condition.
2. Replace relay.
1. Correct overload condition.
2. Clean out sawdust to provide normal air circulation
through motor.
1. Replace relay and check line voltage.
2. Replace relay.
3. Check and repair wtring.
1. Replace relay.
2. Correct the !ow line voltage condition.
3. Replace fuses or circuit breakers with proper capacity
units.
1. Reduce motor load.
2. Replace fuses or c_rcuit breakers.
3. Replace relay.
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