Oliver 6320, Owner'S Manual, Page: 34 / 56

34 | Page Oliver Machinery 6320 Sander
Operation / Quality-Related Issues
Problem Possible Cause Solution
Work pulled from hand. Inadequate stock
support. Hold the stock firmly against the sanding belt.
Use the miter gauge as support.
Use special jigs to support the short stock.
Sanded edge is not
square. Sanding belt is not
perpendicular to the
table. Adjust the sanding belt tilt.
Digital readout not
zeroed. Set the sanding belt in the upright position and
reset the digital readout.
Improper stock feeding. Ensure stock is pressed firmly against the table
when feeding.
Unable to form a
straight edge. Improper stock feeding. Apply even and consistent pressure on the
entire edge when feeding.
Worn graphite backing. Use a straight edge to check the flatness of the
platen with the graphite backing. Replace worn
graphite backing as needed.
Stock burns Sanding grit is too fine. Use a sanding belt with a coarser grit.
Clogged/worn sanding
belt. Use the sanding belt cleaner to unclog the belt.
Replace the sanding belt as needed.
Feed pressure is too
high. Lower feed pressure.
Sanding belt clogs easily Sanding softwood or
wood with high resin
content. Clean/replace the belt more frequently.
Sanding wet stock. Dry stock before sanding.
Sanding non-wood
materials. Some materials may melt easily when heated.
Sand with light pressure and keep it cool when
sanding.
Deep sanding marks on
the workpiece Sanding belt grit is too
coarse. Use a finer grit sanding belt.
Dirty/contaminated
sanding belt. Clean sanding belt. Replace as necessary.
Too much feeding
pressure and/or abrupt
feeding. Reduce feeding pressure and allow more time
for the abrasive surface to work on the
workpiece.
Abrasive materials rub
off the belt easily Aged sanding belt. Avoid storing sanding belts in extreme
temperatures and humidity, which may cause
the belt to fail prematurely.
Do not fold or smash the sanding belt, as it may
disintegrate the bonding material on the belt.