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BOTH
t
Excessive noise_
Motor fails to develop
full power. NOTE:
LOW VOLTAGE: (Power
output of motor
decreases rapidly with
decrease in vottage at
motor terminaJs For
qexampte, a reduction of
!10% in voltage causes
a reduction of 19% in
maximum power output
tof which the motor is
_capabte, and a reduction
;of 20% in voltage causes
!a reduction of 36% in
_maximum power
ioutput.)
L
=Motor starts slowly
!or fails to come up
ito full speed.
Motor overheats.
Starting switch in
motor' will not operate°
Motor stalls
(resulting in blown
fuses or tripped
circuit breakers)
Frequent opening of
fuses or circuit
breakers,
trouble shooting--motor
M@#ELS
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 PROBABLE CAUSE I REMEDY
1 Motor t Have motor checked by qualified service
technician Repair service is available at your
nearest Sears store.
1 Circuit overloaded with 1 Do not use other appliances or motors on
lights, appliances and same circuit when using the saw
other motors
2 Undersize wires or circuit 2 tncrease wire sizes, or reduce length of wiring
too long See "Motor-Specifications and Electrical
Requirements" section
3 General overloading of 3 Request a voltage check from the power
power company company
facilities
1 Low voltage 1 Request voltage check from the power
company Check size of circuit wiring
2 Windings burned out 2 Have motor repaired or replaced
or open
3 Starting switch not 3 Blow out sawdust from motor Have motor
operating, repaired.
I Motor overloaded I Feed work slower into blade
2 Improper cooling (Air 2 Clean out sawdust to provide normal air
circulation restricted circulation through motor See "Maintenance
through motor due to and Lubrication" section
sawdust accumulation.
1 Burned switch contacts -1 Have switch replaced and request a voltage
(due to extended hold-in check from the power company
periods caused by low line
voltage, etc )
2 Shorted capacitor 2 Have capacitor tested and replace if defective
3 Loose or broken 3 Have wiring checked and repaired
connections.
t Starting switch not !. Have switch replaced
operating
2 Voltage too low to permit 2 Request voltage check from the power
motor to reach operating company.
speed
3 Fuses or circuit breakers 3 Install proper size fuses or circuit breakers
do not have sufficient
capacity.
1 Motor overloaded 1 Feed work slower into blade.
2 Fuses or-circuit breakers 2 Inst'all proper size fuses or circuit breakers
do not have sufficient Check that wiring wilt handle load
capacity
3. Starting switch not 3 Have switch replaced.. Blow out sawdust
operating (motor does not
reach speed).
38
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