Table of Contents
Advertisement
trouble shooting -- motor
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
Excessive noise.
Motor fails to develop
1.
full power. NOTE:
LOW VOLTAGE: (Power
output of motor
decreases rapidly with
2.
decrease in voltage at
motor terminals. For
example, a reduction
of
3.
10% in voltage causes
a reduction
of 19% in
maximum power output
of which the motor is
capable, and a reduction
i of 20% in voltage causes
a reduction
of 36% in
maximum
power
output.)
Motor starts slowly
1.
or fails to come up
to full speed,
2.
3.
Motor overheats.
1.
2.
Starting switch in
1.
motor will not operate.
2.
3.
Motor stalls
1.
(resulting
in blown
fuses or tripped
2.
circuit
breakers).
3.
Frequent opening of
1.
fuses or circuit
2.
breakers.
3.
PROBABLE CAUSE
REMEDY
1. Motor
Circuit overloaded
with
lights, appliances and
other motors.
Undersize wires or circuit
too long.
General overloading
of
power company
facilities.
Low voltage.
Windings
burned out
or open.
Starting switch not
operating.
Motor overloaded.
Improper cooling
(Air
circulation
restricted
through
motor due to
sawdust accumulation.
Burned switch contacts
(due to extended hold-in
periods caused by low line
voltage, etc.)
Shorted capacitor.
Loose or broken
connections.
Starting switch not
operating.
Voltage too low to permit
motor to reach operating
speed.
Fuses or circuit breakers
do not have sufficient
capacity.
Motor overloaded.
Fuses or circuit breakers
do not have sufficient
capacity.
Starting switch not
operating
(motor does not
reach speed).
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. Blow 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
check from the power company.
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.
1. Feed work slower into blade.
2. Install proper size fuses or circuit
breakers.
Check that wiring will handle load.
3. Have switch replaced. Blow out sawdust.
33
Hide quick links:
Advertisement
Table of Contents
