Starting The Sanding Process - USand BT700 Manual Del Operador

STARTING THE SANDING PROCESS

Before operating the machine, make sure the handle adjusting lever is tight.
Empty the vacuum system when full into a metal canister away from your workspace and other
Flammable materials (this may need done several times during the process).
Remove the vacuum system from the unit when not in use and empty contents as instructed above.
STEP 1:
Determine the condition of the floor. We recommend staring with 36 grit (24 grit for severely damaged
or heavy polyurethane floors). Lean the machine back on its handle. Attach the sandpaper to the
backer pads. Sandpaper usage will depend on the finish to remove, and the amount of wood that needs
to be removed.
STEP 2:
With the U-Sand® equipment in the upright position, turn the switch on and slowly move the sander
over the floor, letting the machine do the work for you. For new installation it is recommended to move
the machine across the grain, this is the most effective way to level the floor. (change sandpaper when
it appears plugged or dull).
Proper Grit Sequence:
24 if needed
36 for leveling
40 sand thoroughly
80 final sanding and clear finish
120 recommended for staining
STEP 3:
After sanding the floor completely, with the first grit, vacuum the floor thoroughly and change paper to
the next finer grit. Continue the sanding process. Check paper after sanding about a 10' x 10' area to
see that the paper is still sanding. Inspect the floor to see if any swirl marks remain. If swirl marks exist,
continue to sand just the area with the higher grit paper until they are less visible. You should get down
close to the floor and view it from several directions in good light for this inspection.
STEP 4:
Use progressively higher grits. Sand the floor completely. This step will take less time than the previous
grits. Check sandpaper often to make sure it is clean and effective.
STEP 5:
Inspect the floor thoroughly for scratches or unevenness. Apply the final finishing grit (usually 120 or
180 grit). At this point, the floor should become smooth and free of all swirl marks when inspected
closely.
STEP 6:
Corners and edges and be sanded with a detail sander or hand scraper. A paint scraper can be used for
hard to reach areas, such as: under radiators, and in corners. Some hand sanding may be necessary in
these remove places. Inspect the floor thoroughly to determine when you are finished sanding.
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