Delta 31-481 Operating Instructions And Parts Manual

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Brand: Delta

Category: Sander

Type: Operating instructions and parts manual for Delta 31-481

Pages: 50

Download Delta 31-481 Operating instructions and parts manual

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13
Front Grit / Rear Grit Setting (mm)
80/100, 120/150, 120/180, 150/220 .15
80/120, 100/150, 100/180 .30
60/100, 36/38 .40
36/120 .56
36/60 .76
36/80 .9
ADJUSTMENTS
TO ADJUST DRUM HEIGHT
In order to accommodate different abrasive grits on
the drums, the height of the drums from the workpiece
must vary. The height of the front drum has been
factory set and should not be adjusted. The back drum
is designed for easy adjustment.
1. Lift the upper guard up and tilt it toward the rear of
the machine to expose the sanding drums.
2. Locate the drum height adjustment screw as shown
in Fig. 13.
3. Rotate the adjustment screw to the desired
measurement.
4. Repeat this same adjustment at the opposite end of
the roller to maintain parallel orientation to the front
drum.
5. Replace the upper guard to its original position over
the drums.
NOTE: For proper operation of the machine, the dial
settings at both ends of the drum must be identical.
IMPORTANT: The chart at the right shows the proper
settings based upon sanding grits.
FIG. 13
OPERATION
The basic operating procedure for the Dual Drum Sander is as follows:
1. Establish the depth of wood removal and set table height.
2. Start drums.
3. Start feed belt and select proper feed rate.
4. Ensure dust collection system is running.
5. Feed stock through machine.
OPERATING TIPS
DETERMINING DEPTH OF
WOOD REMOVAL
Given the variables of grit abrasion, wood type, and
feed rate, determining proper depth of removal may
take some experimentation. For best results, use
scrap wood to practice sanding and to develop skill
and familiarity with the machine before doing finish
work. Also consider any cups and/or crowns in the
workpiece.
A good rule of thumb when sanding with grits finer than
80 is to lower the drum so it contacts the workpiece
but drum can still be rotated by hand. For grits coarser
than 80, lower the drum slightly more.
SANDING IMPERFECT STOCK
When sanding stock with a cup or crown, place the
crown up. This will stabilize the stock to help prevent
tipping or rocking during sanding. After the crown has
been removed and the top is flat, turn the stock over
and sand the opposite side. To avoid personal injury,
take special care when sanding stock that is twisted,
bowed, or otherwise varies in thickness from end to
end.
If possible, support such stock as it is being sanded
to keep it from slipping or tipping. Use an extra roller
stand, help from another person, or hand pressure on
the stock to minimize potentially hazardous situations.