SYMPTOM
Motor will not start
Motor stalls or fails to
reach full speed
Motor overheats
Frequent tripping of circuit
breaker
Snipe
Uneven cut
Inaccurate cut angle
Surface not smooth
POSSIBLE CAUSE(S)
1. Low voltage
2. Short circuit in line cord or plug
3. Short circuit in motor
4. Open circuit or loose connection
in motor
5. Incorrect fuses or circuit breakers
6. Defective switch
7. Defective capacitor
1. Power overload
2. Low voltage from power supply
3. Undersized line cord
4. Motor overload
5. Short circuit or loose connection
in motor
6. Incorrect fuses or circuit breakers
7. Wood chips clogged
1. Motor overloaded
2. Excessive dust build-up results in
decreased air circulation
1. Motor overload
2. Inadequate capacity of circuit
breaker
3. Circuit overload
4. Blades are dull
1. Inadequate support of workpiece
2. Feed workpiece unevenly
3. Blades are dull
1. Feed workpiece too fast
2. Fence is not perpendicular to
jointer bed
3. Blades height is not uniform
1. Wood chips under bottom of fence
2. Fence and fence bracket are not
adjusted properly
1. Blades are dull
2. Fuzzy grain due to high moisture
content in wood
3. Torn grain due to blades cutting
against grain
4. The cut is too deep
CORRECTIVE ACTION
1. Check power supply for proper voltage
2. Inspect line cord and plug for faulty insulation
or shorted connection
3. Inspect connection on motor.
4. Inspect connection on motor
5. Replace with correct fuses or circuit breakers
6. Replace switch
7. Replace capacitor
1. Reduce workload on the power supply
2. Check power supply for proper voltage
3. Use line cord of adequate size or reduce
length of wiring
4. Reduce load on motor
5. Inspect the connection in motor for loose or
shorted connection
6. Replace with correct fuses or circuit breakers
7. Inspect chip blower assembly and fan belt.
Remove excessive wood chips
1. Reduce load on motor. Turn off the machine
until motor cools down
2. Remove dust build-up
1. Reduce load on motor
2. Replace with correct circuit breaker
3. Reduce circuit load
4. Sharpen or replace blades
1. Support long workpiece with additional
platform
2. Feed workpiece evenly
3. Sharpen or replace blades
1. Feed workpiece slowly
2. Adjust fence and fence bracket properly
3. Adjust blade height properly
1. Clean wood chips under the bottom of fence
2. Adjust fence and fence bracket properly
1. Sharpen or replace blades
2. Use dry wood
3. Change direction and feed workpiece along
grain
4. Decrease depth of cut
TROUBLESHOOTING
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