Grizzly G1066R Owner's Manual page 40

Operation
Symptom Possible Cause
Machine slows 1. Belt(s) loose or worn.
when sanding;
makes squealing
noise on start-up.
Grinding, 1. Drum scraping on dust scoop.
screeching, or
rubbing noise from
2. Drum bearings need lubrication.
sanding drums.
3. Drum bearings worn.
Machine lacks 1. Too much pressure on sanding drum.
power; drums stop
2. Belt(s) loose or worn.
turning under load.
Conveyor belt slips 1. Belt tension not properly adjusted.
or does not track 2. Belt tracking not properly adjusted.
correctly. 3. Conveyor belt loose or worn.
4. Workpiece too heavy.
Workpiece pulls 1. Sanding drum(s) not perpendicular to feed
to one side during
direction.
sanding operations.
2. Sanding drum(s) not parallel with conveyor.
Workpiece kicks out 1. Not enough pressure from pressure rollers.
of sander.
2. Sanding drum(s) not properly aligned.
Excessive snipe. 1. Lack of outfeed support.
2. Too much pressure from pressure rollers.
3. Too much pressure from rear pressure
roller.
Sanding grains 1. Sandpaper roll has been stored in an
easily rub off roll.
incorrect environment.
2. Sandpaper roll has been smashed or
folded.
Sandpaper comes 1. Sandpaper roll not properly wrapped
off drum or is loose.
around drum.
2. Sandpaper roll not correct size.
3. Torn or damaged sandpaper.
4. Sandpaper not tightened or fastened
correctly.
5. Sanding drum not parallel with conveyor.
Sandpaper clogs 1. Sanding depth of cut too much or feed rate
quickly. too slow.
2. Workpiece has high moisture content or
sap.
3. Incorrect sandpaper grit.
4. Poor dust collection.
5. Sandpaper loaded with sawdust and gum.
6. Worn sandpaper.
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Possible Solution
1. Tension/replace belt(s) (Page 45).
1. Adjust dust scoop so it does not contact drum
(Page 45).
2. Lubricate drum bearings (Page 36).
3. Replace drum bearings (Page 47).
1. Lower conveyor table (Page 30).
2. Tension/replace belts (Page 45).
1. Properly adjust belt tension (Page 39).
2. Properly adjust belt tracking (Page 39).
3. Properly tension (Page 39)/replace conveyor
belt.
4. Use lighter workpiece.
1. Adjust sanding drum(s) perpendicular to feed
direction (Page 41).
2. Adjust sanding drum(s) parallel to conveyor
(Page 42).
1. Lower pressure rollers (Page 43).
2. Adjust sanding drum(s) alignment (Page 41).
1. Set up outfeed table or have someone catch
workpiece as it comes out.
2. Raise pressure rollers (Page 43).
3. Raise rear pressure roller (Page 43).
1. Replace damaged sandpaper roll (Page 33).
Store sanding belt in a cool, dry area.
2. Replace damaged sandpaper roll (Page 33). Do
not bend or fold sanding belt.
1. Re-install sandpaper roll (Page 33).
2. Cut sandpaper roll to correct dimensions
(Page 33).
3. Replace sandpaper roll (Page 33).
4. Re-install sandpaper roll (Page 33).
5. Adjust sanding drum parallel to conveyor (Page 40).
1. Reduce depth of cut (Page 30) or increase feed
rate (Page 30).
2. Use different stock, or accept characteristics os
stock and plan on cleaning/replacing sandpaper
frequently; remove applied finished before sanding.
3. Use correct sandpaper grit for operation
(Page 32).
4. Unclog ducts; close gates to improve suction; re-
design collection system.
5. Clean/replace sandpaper (Page 35).
6. Replace sandpaper (Page 33).
Model G1066R/Z/G1079R (Mfd. Since 02/24)