Troubleshooting: Performance Problems; Troubleshooting: Mechanical And Electrical Problems - KNOVA KN CM-15W3 Manual

TROUblEShOOTING: PERFORMANCE PROblEMS

Trouble
Snipe.
(NOTE: Snipe can be
minimized until
negligible, but not
eliminated.)
Fuzzy grain.
Torn grain.
Rough/Raised grain.
Rounded, glossy surface.
Poor feeding of lumber.

TROUblEShOOTING: MEChANICAl AND ElECTRICAl PROblEMS

Trouble
Uneven depth of cut
side to side.
Board thickness does
not match depth of
cut scale.
Chain is jumping.
Probable Cause
Table rollers not set properly.
Inadequate support of long boards.
Uneven feed roller pressure front to back.
Dull knives. Replace knives.
Lumber not butted properly.
High moisture content in wood.
Dull knives.
Too heavy a cut.
Knives cutting against grain.
Dull knives.
Dull knives.
Too heavy a cut.
Moisture content too high.
Dull knives.
Feed speed too slow.
Cutting depth too shallow.
Inadequate feed roller pressure.
Planer table rough or dirty.
V-belt is slipping.
Surface of feed roller is clogged.
Probable Cause
Knives are worn.
Cutterhead not level with bed.
Depth of cut scale incorrect.
Inadequate tension.
Sprockets misaligned.
Sprockets worn.
Remedy
Adjust rollers to proper height.
Support long boards with extension tables.
Adjust feed roller tension.
Replace knives.
Butt end to end each piece of stock as they
pass through machine.
Remove moisture by drying, or use different
stock.
Replace knives.
Adjust proper depth of cut.
Cut along the grain.
Replace knives.
Replace knives.
Adjust proper depth.
Remove moisture by drying, or use
different stock.
Replace knives.
Increase speed.
Increase depth.
Adjust feed roller tension. If proper tension
cannot be achieved, replace feed rollers.
Clean pitch and residue, and apply paste
wax to planer table.
Tighten v-belt.
Clear pitch and residue out of teeth.
Remedy
Replace knives.
Level the bed.
Adjust depth of cut scale.
Adjust chain tension.
Align sprockets.
Replace sprockets.
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