14
Trouble Probable
Cause Remedy
Machine vibrates
excessively.
Sander base not level with
floor.
Shim if necessary.
Not secured to the floor.
Use lag screws through holes in base to secure
machine to the floor.
Improper motor mounting.
Check and adjust mounting.
Sanding marks on
workpiece.
Sanding paper too coarse
for required finish.
Use proper grit. Coarser grits for stock removal,
and finer grits for finish work.
Workpiece sanded across
grain.
When surface sanding, use fine sanding disc
paper then finish by hand, working in direction of
grain.
Sanding grains
quickly rub off
paper.
Sanding paper has lost its
original properties.
Do not store sanding paper in extremely dry or
high-temperature areas. Do not fold sanding disc
papers, store them flat.
Sanding paper
becomes glazed.
Sanding painted surface.
Use open-end grain/flint sanding paper.
Wood is wet or gummy.
No cure. Use different stock.
Burn marks on
workpiece.
Wrong sanding paper
surface.
Use coarser grit for stock removal.
Feed pressure too great.
Do not force workpiece into disc. Use just enough
pressure, and let the sanding disc do the work.
Sanding paper
burns, or clogs
quickly.
Too much pressure,
sanding disc biting too
deeply into workpiece.
Adjust for slight sanding action and make several
passes.
Workpiece pulled
from hand.
No support for workpiece.
Use miter gauge. Keep workpiece firmly down
against table.
Sanded edge is
not square.
Result of freehand sanding.
Keep workpiece flat on table at all times when a
square edge is desired. Use miter gauge to ensure
workpiece is square with sanding disc.
Table scale inaccurate.
Check table alignment to disc with a machinist’s
square. It should be 90 degrees. Adjust pointer
and table angle if necessary.
Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call
1-800-274-6848, Monday through Friday (see our website for business hours, www.powermatic.com).
Having the Model Number and Serial Number of your machine available when you call will allow us to
serve you quickly and accurately.
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