Woodstock SHOP FOX W1773 Owner's Manual page 59

W1772/W1773 37" Drum Sander
Machine Operations
PROBLEM
Machine slows when sand-
ing, making squealing noise,
especially on start-up.
Loud repetitious noise
coming from machine.
Vibration when sanding.
Grinding, screeching, or
rubbing noise when sand-
ing drums are powered up.
Short V-belt lifespan.
Machine lacks power;
drums stop turning under
load.
Conveyor slips under load.
Conveyor tracks to one
side; conveyor hits the
roller cover.
Workpiece pulls to one side
during sanding operations.
Excessive snipe.
Workpiece kicks out.
Sanding drums make scrap-
ing noises..
Sandpaper tears off drums
during operation.
Table elevation controls are
stiff and hard to adjust.
Poor dust collection.
POSSIBLE CAUSE
1. V-belts loose.
2. V-belts worn out.
1. Pulley setscrews or keys are missing
or loose.
2. Motor fan is hitting the cover.
3. V-belts are defective.
1. Loose drum pillow bearings.
2. Worn drum pillow bearings.
1. Drum bearings lack
grease.
2. Drum bearings worn.
1. Pulleys not aligned correctly.
2. Improperly tensioned.
1. V-belts loose.
2. Too much pressure on pressure roll-
ers.
1. Conveyor is too loose.
2. Too much load.
1. Conveyor tracking is incorrect.
1. One of the sanding drums is not par-
allel with the table.
1. Too much pressure roller pressure.
2. Too much pressure from rear pres-
sure rollers.
3. Lack of outfeed support.
1. Not sufficient pressure roller pres-
sure.
1. Drums scrape dust scoop
1. Nail/staple in workpiece.
2. Sandpaper not fastened correctly.
3. Drums not perpendicular to the feed
direction.
1. Table lock is engaged.
2. Table lift screws dirty or loaded with
sawdust.
3. Chain idler roller sprocket lock nuts
have been tightened against roller.
4. Elevation handle worm gear is dirty
or loaded with sawdust.
1. Dust collection lines incorrectly sized
for this machine.
2. Dust collector underpowered or too
far away from this machine.
CORRECTIVE ACTION
1. Tighten V-belts (Page 33).
2. Replace V-belts (Page 33).
1. Inspect keys and setscrews. Replace or tighten if
necessary.
2. Adjust fan cover mounting position, tighten fan, or
shim fan cover.
3. Replace V-belts (Page 33).
1. Tighten drum pillow bearings.
2. Replace drum pillow bearings.
sufficient 1. Grease the pillow bearings (Page 30).
2. Replace the drum bearings.
1. Align pulleys (Page 33).
2. Properly tension V-belts (Page 33).
1. Tighten V-belts (Page 33).
2. Reduce pressure roller pressure (Page 42).
1. Tension conveyor (Page 36).
2. Decrease load.
1. Track the conveyor so it runs straight (Page 37).
1. Adjust the sanding drums parallel to the table (Page
38).
1. Reduce pressure roller pressure (Page 42).
2. Reduce rear pressure roller pressure (Page 42).
3. Set up outfeed table or have someone catch the
workpiece as it comes out.
1. Increase pressure roller pressure (Page 42).
1. Adjust dust scoops so they do not touch sanding
drums (Page 43).
1. Sand only clean workpieces.
2. Install the sandpaper correctly (Page 28).
3. Adjust the drums perpendicular to the feed direc-
tion (Page 38).
1. Disengage table lock.
2. Clean and regrease table lift screws (Page 43).
3. Adjust the lock nuts on the idler roller sprocket so
the roller can spin freely.
4. Remove the worm gear box, clean it, and regrease
it.
1. Use at least an 8" main line with two 6" branch lines
that each Y into 4" at the machine.
2. Upgrade your dust collector or decrease the dis-
tance from the dust collector to the machine.
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