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PROBLEM
Excessive noise.
Motor fails to devet-
op full power.
NOTE: LOW VOL-
TAGE: (Power out-
put of motor de-
creases 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 ful!speed.
Motor overheats
Motor stalls
(resulting in blown
fuses or tripped
circuit breakers).
Frequent opening of
fuses or circuit
breakers,
PROBABLE CAUSE REMEDY SUGGESTED
1. Motor 1. Have motorchecked byqualified service technician. Repair
service is avaiable at your nearest Sears store.
" , ............. l .... " " '
1. 1. Do not use other appliances or motors on same circuit
when using the Dust Collection System.
2. Increase the wire sizes on extension cords, or reduce
2. length of extension cords, See "Motor Specifications and
Electrical Requirements" section.
3. Request a power check from the power company.
i3.
Circuit overloaded with
lights, appliances and
other motors.
Undersize extension cord
or extension cord too
long.
General overloading of
Power company facilities.
1. Low voltage.
2. Windings burned out
or open.
3, Starting switch will not
operate. (Switch contacts
working properly.)
Capacitor is bad.
1. Motor overloaded.
2. Improper cooling. (Air
circulation restricted
through motor due to
sawdust, accumulating
inside of motor.)
1, Voltage too low to permit
motor to reach operating
speed.
2. Fuses or circuit breakers
do not have sufficient
capacity.
1. Motor overloaded.
2. Fuses or circuit breakers
do not have sufficient
capacity.
1. Request voltage check from the power company.
2. Have motor repaired or replaced by a qualified service.
technician.
3. Have capacitor replaced by a qualified service technician.
1. Clean out sawdust to provide no rrnaJ air circulation through
motor. See "Maintenance" section.
1. Request voltage check from the power company.
2. Install proper size fuses or circuit breakers.
1,Install proper size fuses or circuit breakers.
NOTE: Motors used on wood-workingtools are particularty susceptible to the accurr_tation of saw-
dust 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 st;_rting switch.
........ 17