Use and Care Manual

ST1010 6" Jointer (Mfd. Since 3/16)
-35-
SERVICE
Troubleshooting
Motor and Electrical
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Machine does not
start or breaker
trips immediately
after startup.
1. Switch disabling key removed.
2. Incorrect power supply voltage/circuit size.
3. Power supply circuit breaker tripped/fuse blown.
4. Motor wires connected incorrectly.
5. Wiring open/has high resistance.
6. ON switch at fault.
7. Centrifugal switch at fault.
8. Start capacitor at fault.
9. Motor at fault.
1. Install switch disabling key.
2. Ensure correct power supply voltage/circuit size.
3. Ensure circuit is sized correctly and free of shorts. Reset
circuit breaker or replace fuse.
4. Correct motor wiring connections (Page 42).
5. Check/fix broken, disconnected, or corroded wires.
6. Test/replace switch.
7. Adjust/replace centrifugal switch if available.
8. Test/replace capacitor.
9. Test/repair/replace.
Machine stalls or is
underpowered.
1. Workpiece material not suitable.
2. Excessive feed rate.
3. Excessive cutting depth.
4. Dull knives.
5. Dust collection problem, causing internal
components to clog up with shavings.
6. Belt slipping; oil/grease on belt.
7. Pulley loose or not properly aligned.
8. Motor overheated.
9. Motor wires connected incorrectly.
10. Plug/receptacle at fault.
11. Motor at fault.
1. Ensure workpiece is suitable for jointing (Page 25).
2. Reduce feed rate.
3. Reduce cutting depth .
4. Sharpen/replace knives (Page 37).
5. Clear blockages; move machine closer to dust collector;
upgrade dust collector.
6. Tension/replace belt; clean belt; ensure pulleys are
aligned.
7. Re-align pulleys; replace shaft key; tighten pulley set
screw.
8. Clean motor, let cool, and reduce depth of cut.
9. Correct motor wiring connections.
10. Test for good contacts/correct wiring.
11. Test/repair/replace.
Machine has vibra-
tion or noisy oper-
ation.
1. Motor or other component loose.
2. Belt worn/loose; belt slapping cover.
3. Pulley loose or not properly aligned.
4. Motor fan rubbing on fan cover.
5. Mobile base caster engaged.
6. Knives at fault.
7. Cutterhead bearings at fault.
8. Centrifugal switch at fault.
9. Motor bearings at fault.
1. Replace damaged bolts/nuts; retighten loose bolts/
nuts. Use thread-locking fluid if condition repeats.
2. Tension/replace belt.
3. Re-align pulleys; replace shaft key; tighten pulley set
screw.
4. Fix/replace fan cover; replace loose/damaged fan.
5. Release mobile base caster to stabilize machine.
6. Sharpen/replace knives; set knife alignment/height
correctly (Page 37).
7. Replace bearing(s)/realign cutterhead.
8. Replace.
9. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
The following troubleshooting tables cover common problems that may occur with this machine. If you
need replacement parts or additional troubleshooting help, contact our Technical Support.
Note:
Before contacting Tech Support, find the machine serial number and manufacture date, and if
available, your original purchase receipt. This information is required to properly assist you.