• The label on your tool may include the following symbols. The symbols and their definitions are
as follows:
V .....................volts
A .........................amperes
Hz ...................hertz
W ........................watts
min .................minutes
or AC .............alternating current
or DC .....direct current
or AC/DC......alternating or direct current
...................Class I Construction
no .......................no load speed
.......................(grounded) n
.........................rated
speed
...................Class II Construction
.......................earthing terminal
(double insulated)
........................safety alert symbol
…/min ............per minute
BPM ...................beats per minute
IPM .................impacts per minute
RPM ...................revolutions per minute
SPM ...............strokes per minute
sfpm ...................surface feet per minute
SAVE THESE INSTRUCTIONS FOR FUTURE USE
Motor
Be sure your power supply agrees with the nameplate marking. Voltage decrease of more than
10% will cause loss of power and overheating. D
E
WALT tools are factory tested; if this tool does
not operate, check power supply.
COMPONENTS (FIG. 1)
A. On/Off switch
D. Dust collection bag
B. Speed control dial (D26453)
E. Vac-adapter
C. Sanding pad
F. CFS disc (Fig. 6)
Attaching Sanding Discs
Your sander is designed to use 5” (127mm) sanding discs with an 8-hole dust extraction pattern.
Sanding discs for the D26451 and D26453 attach with hook and loop. Sanding discs for the
D26450 attach using pressure sensitive adhesive (PSA).
REQUIRED SANDPAPERS
Model Sander
Disc Size
Attachment Method
Hole Pattern
D26450
5”
PSA
8
Holes
D26451
5”
Hook & Loop
8 Holes
D26453
5”
Hook & Loop
8 Holes
TO ATTACH PAPER TO THE SANDING PAD (FIG. 2)
CAUTION:
Turn off and unplug the tool before making any adjustments or removing or installing
attachments or accessories. Be sure the switch is in the OFF position.
1. Turn the sander over so that the sanding pad is facing upward.
2. Clean the dust from the vinyl pad face.
3. Hold the pad with one hand to keep it from rotating.
4. With the other hand, align the holes and place the disc directly on top of the pad.
NOTE:
Do not use sanding screen (e.g., screen used for sanding drywall) directly on the hook and
loop pad. The screen will not hold and will damage the hooks on the pad. The hooks on the pad
will wear very rapidly if left in contact with the work surface while the tool is operating.
Switch (Fig. 3)
To turn the unit on, depress the side of the dust-protected switch (A) that corresponds to the
symbol “I”. To turn the tool off, depress the side of the switch that corresponds to the symbol “O”.
Speed Control Dial (D26453)
The speed control dial (B), shown in Figure 1, allows you to increase or decrease speed from 7,000–
12,000 Orbits Per Minute. The optimal speed setting for each application is very much dependent
on personal preference. Generally, you will want to use a higher setting on harder materials and a
lower setting on softer materials. Material removal rate increases as speed increases.
Dust Extraction (Fig. 4)
CAUTION:
Turn off and unplug the tool before making any adjustments or removing or installing
attachments or accessories. Be sure the switch is in the OFF position.
Your sander has two dust collection methods: a twist-on dust collection bag (D) and a built-in
vac-adapter (E) which can be hooked directly to a shop vaccum system.
TO EMPTY DUST BAG
1. While holding the sander, grasp the dust collection bag (D) at the end nearest the sander and
twist off of the vac-adapter (E).
2. Gently shake or tap the dust collection bag to empty.
3. Twist dust collection bag back onto the vac-adapter.
You may notice that all the dust will not come free from the bag. This will not affect sanding
performance but will reduce the sander’s dust collection efficiency. To restore your sander’s dust
collection efficiency, depress the spring inside the dust bag when you are emptying it and tap it on
the side of the trash can or dust receptacle.
CAUTION:
Never operate these tools unless the dust collector is in place. Sanding dust exhaust
may create a breathing hazard.
OPERATION (FIG. 5)
WARNING: To reduce the risk of injury, turn unit off and disconnect it from power
source before installing and removing accessories, before adjusting or when making
repairs.
An accidental start-up can cause injury.
To operate your sander, grasp it as shown in Figures 5A or 5B and turn it on. Move the unit in long,
sweeping strokes along the surface being sanded, letting the sander do the work.
Pushing down on the tool while sanding actually slows the removal rate and produces an
inferior quality surface. Be sure to check your work often, this sander is capable of removing
material rapidly, especially with coarse paper.
The random orbital action of your sander allows you to sand with the grain or at any angle across
it for most sanding jobs. To produce the best finish possible, start with coarse grit sandpaper and
change gradually to finer and finer paper. Vacuum and wipe surface with a tack cloth between grit
steps.Your sander is designed to sand into small or confined areas. Its small size and light weight
make it ideal for overhead work.
The rate at which the dust collection bag fills up will vary with the type of material being sanded
and the coarseness of the sandpaper. For best results, empty the bag frequently. When sanding
painted surfaces, (see the following for additional precautions when sanding paint) you may find
that the sandpaper loads up and clogs with paint. A heat gun will work much better to remove paint
before sanding. FOLLOW ALL SAFETY INSTRUCTIONS IN HEAT GUN INSTRUCTION MANUAL.
NOTE (D26450 ONLY):
When using PSA sanding discs, remove the disc soon after operation.
PSA paper, if the disc is left on during tool storage, sometimes becomes difficult to remove. To
aid in the removal of old PSA paper, sand for a few minutes to soften the adhesive backing prior
to changing disc.
Precautions To Take When Sanding Paint
1. Sanding of lead based paint is NOT RECOMMENDED due to the difficulty of controlling the
contaminated dust. The greatest danger of lead poisoning is to children and pregnant women.
2. Since it is difficult to identify whether or not a paint contains lead without a chemical analysis,
we recommend the following precautions when sanding any paint:
PERSONAL SAFETY
1.
No children or pregnant women should enter the work area where the paint sanding is being
done until all clean up is completed.
2.
A dust mask or respirator should be worn by all persons entering the work area. The filter
should be replaced daily or whenever the wearer has difficulty breathing. See your local
hardware store for the proper NIOSH approved dust mask.
FIG. 3
FIG. 2
FIG. 4
FIG. 5A
FIG. 5B
FIG. 6
FIG. 7
FIG. 8
3.
NO EATING, DRINKING or SMOKING should be done in the work area to prevent ingesting
contaminated paint particles. Workers should wash and clean up BEFORE eating, drinking
or smoking. Articles of food, drink, or smoking should not be left in the work area where dust
would settle on them.
ENVIRONMENTAL SAFETY
1. Paint should be removed in such a manner as to minimize the amount of dust generated.
2.
Areas where paint removal is occurring should be sealed with plastic sheeting of 4 mils
thickness.
3.
Sanding should be done in a manner to reduce tracking of paint dust outside the work area.
CLEANING AND DISPOSAL
1.
All surfaces in the work area should be vacuumed and thoroughly cleaned daily for the
duration of the sanding project. Vacuum filter bags should be changed frequently.
2.
Plastic drop cloths should be gathered up and disposed of along with any dust chips or
other removal debris. They should be placed in sealed refuse receptacles and disposed of
through regular trash pick-up procedures. During clean up, children and pregnant women
should be kept away from the immediate work area.
3.
All toys, washable furniture and utensils used by children should be washed thoroughly
before being used again.
Tool Care
1. Keep your sander as clean as possible by wiping with a clean cloth and blowing air through it
after every 5 hours of use.
2. As part of
CFS (Controlled Finishing System®)
, your sander is equipped with a replaceable
disc (F) which is located between the pad (C) and the sander body (G). It is designed to
G
D26453
FIG. 1
A
D
E
A
B
C
F
F
F
C
H
FIG. 9
J
I
K
C
E
D26450, D26451
A
C
E
D
D
