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KNOVA KN AP-125B Manual Del Usuario página 9

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TROUBLESHOOTING
WARNING
To avoid injury from an accidental start, turn the switch OFF and always remove the plug from the power source
before making any adjustments.
PROBLEM
POSSIBLE CAUSE
Grano difuso
1. Planing wood with high maisture content.
2. Dull knives.
Torn grain
1. Heavy depth of cut.
2. Knives cutting against grain.
3. Dull knives.
Rough/raised
1. Dull knives.
grain
2. Heavy depth of cut.
3. Stock is wet.
4. Cutterhead bearings damaged.
Poor feeding
1. Planer table is dirty.
or lumber
2. Feed roller damaged.
3. Sprocket damaged.
4. Gear box malfuntion.
Worpiece
1. Inadequate knife setting height.
jammed
Uneven depth
1. Knife projection not uniform.
of cut, side
2. Cutterhead no levelled to planer bed.
to side
Board thickness
1. Depth cut scale is incorrect.
does not match
deth of cut scale
Chain jumping
1. Sprockets misaligned.
2. Sprockets worn.
Mechanical/
1. Not plugged in.
electrical
2. Circuit breaker/fuse.
machine won't
start/restart.
3. Motor failure.
4. Loose wire.
5. Overload reset has not reset.
6. Motor starter failure.
Repeated
1. Extension cord is too long or too thin.
circuit tripping
2. Knives too dull.
resulting in
motor stoppage.
3. Low voltage running.
SOLUTION
1. Dry the wood.
2. Sharpen the knives.
1. Review depth of cut.
2. Feed stock with the grain, or turn workpiece around.
3. Sharpen knives.
1. Sharpen knives.
2. Review depth of cut.
3. Dry the stock.
4. Replace boarings.
1. Clean the dust & debris on the table.
2. Replace rollers.
3. Replace sprockets
4. Check gear box.
1. Set the knives to the correct height.
1. Adjust knife projection.
2. Level cutterhead to tabel.
1. Adjust deoth of cut scale.
1. Align sprockets.
2. Replace sprockets.
1. Check power source.
2. Check power source.
3. Have motor checked.
4. Have motor checked by qualified electrician.
5. Allow machine to cool down and restart.
6. Have motor starter checked by a qualified electrician.
1. Use a shorter thicker extension cord.
2. Sharpen or replace knives.
3. Check voltage.
8

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