Powermatic PJ882 operating instructions Troubleshooting Operating Problems, Probable Cause Remedy

Troubleshooting – Operating Problems

Trouble

Finished stock is concave on back end.

Finished stock is concave on front end.

Finished stock is concave in the middle.

Ends of finished stock are cut more than the middle.

Chip out.

Fuzzy grain.

Cutterhead slows while operating.

“Chatter” marks on workpiece.

Uneven knife marks on workpiece.

Probable Cause	Remedy
Knife is higher than outfeed table.	Raise outfeed table until it aligns with
	tip of knife. See page 19.
Outfeed table is higher than knife.	Lower outfeed table until it aligns with
	tip of knife. See page 19.
Both tables have too much end fall.	Raise both table ends using the cam
	adjustment devices. See pages 17-18.
Table ends are raised higher than the	Lower both table ends using the cam
middle.	adjustment devices. See pages 17-18.
Cutting against the grain.	Cut with the grain whenever possible.
Dull knives/inserts.	Sharpen or replace knives/inserts.
Feeding workpiece too fast.	Use slower rate of feed.
Cutting too deeply.	Make shallower cuts.
Knots, imperfections in wood.	Inspect wood closely for imperfections;
	use different stock if necessary.
Wood has high moisture content.	Allow wood to dry or use different stock.
Dull knives.	Sharpen or replace knives/inserts.
Feeding workpiece too quickly, or	Feed more slowly, or apply less
applying too much pressure to	pressure to workpiece.
workpiece.
	Set knives properly using provided knife
Knives incorrectly set.	setting gauge. Check that knife slots
	are clean and free of dust or debris.
Feeding workpiece too fast.	Feed workpiece slowly and
	consistently.
Knives are nicked, or out of	Replace nicked knives; align knives
	properly using knife-setting gauge. See
alignment.
	page 20.

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