35
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.
Trouble
Probable Cause
Remedy
Excessive noise
1. Motor
2. Pulley set screw is loose.
1. Have motor checked by qualified service techni-
cian. Repair service is available at your nearest
Authorized Service Center.
2. Tighten set screw.
Motor fails to develop full
power. NOTE: Low volt-
age (Power output of
motor decreases rapidly
with decreases in voltage
at motor terminals. For
example, a reduction of
10% in voltage causes a
reduction of 19% in maxi-
mum power output of
which the motor is capa-
ble, and a reduction of
20% in voltage causes a
reduction of 36% in maxi-
mum power output.)
1. Circuit overloaded with
lights, appliances and other
motors.
2. Undersize wires or circuit
too long.
3. General overloading of
power company facilities.
1. Do not use other appliances or motors on same cir-
cuit when using the jointer.
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.
Motor starts slowly or fails
to come to full speed
1. Windings burned out or
open.
2. Drive belt tension too high.
3. Defective start capacitor
1. Have motor repaired or replaced
2. Adjust belt tension
3. Have start capacitor replaced
Motor overheats
1. Motor overloaded
2. Improper cooling. (Air circu-
lation restricted through
motor due to sawdust
accumulating inside of
motor.)
1. Feed work slower into blade.
2. Clean out sawdust to provide normal air circulation
through motor. See “Maintenance and Lubrication”
section.
Motor stalls (resulting in
blown fuses or tripped cir-
cuit breakers.)
1. Voltage too low to permit
motor to reach operating
speed.
2. Fuses or circuit breakers do
not have sufficient capacity.
3. Circuit overloaded with
lights, appliances and other
motors.
1. Request voltage check from the power company
2. Install proper size fuses or circuit breakers. See
“Electrical Connection” section
3. Do not use other appliances or motors on same cir-
cuit when using the jointer.
Frequent opening of
fuses or circuit breakers
1. Motor overloaded
2. Fuses or circuit breakers do
not have sufficient capacity.
3. Circuit overloaded with
lights, appliances and other
motors.
1. Feed work slower
2. Install proper size fuses or circuit breakers. See
“Electrical Connection” section
3. Do not use other appliances or motors on same cir-
cuit when using the jointer.
