Wesco WS4151U.1 User manual

2.0A Palm Sander EN
WS4151U.1 (PPS240BU
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Fig.A Fig.B
Fig.C Fig.D
Fig.E Fig.F
Fig.G

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Fig.A Fig.B
Fig.C Fig.D
Fig.E Fig.F
Fig.G

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EN
PRODUCT SAFETY
WARNING: Some dust created by power sanding,
sawing, grinding, drilling and other construction
activities contains chemicals known to the State of California
to cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints;
• Crystalline silica from bricks and cement and other
masonry products;
• Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how
often you do this type of work. To reduce your exposure to
these chemicals: work in a well ventilated area, and work
with approved safety equipment, such as those dust masks
that are specially designed to filter out microscopic particles.
WARNING: This product can expose you to
chemicals including lead and Di(2-ethylhexyl)
phthalate (DEHP) which are known to the State of California
to cause cancer and birth defects or other reproductive
harm. For more information go to www.P65Warnings.ca.
gov.
GENERAL POWER TOOL SAFETY
WARNINGS
WARNING: Read all safety warnings,
instructions, illustrations and specifications
provided with this power tool. Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury.
Save all warnings and instructions for future reference.
The term power tool in the warnings refers to your electric
(corded) power tool or battery-operated (cordless) power tool.
1) Work area safety
a) Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
c) Keep children and bystanders away while operating
a power tool. Distractions can cause you to lose control.
2) Electrical safety
a) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk
of electric shock.
b) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric
shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
3) Personal safety
a) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools may
result in serious personal injury.
b) Use personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personal injuries.
c) Prevent unintentional starting. Ensure the switch
is in the off-position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to
a rotating part of the power tool may result in personal
injury.
e) Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power
tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair and clothing away from
moving parts. Loose clothes, jewellery or long hair can
be caught in moving parts.
g) If devices are provided for the connection of dust

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extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust-related hazards.
h) Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of a second.
4) Power tool use and care
a) Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
b) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power source and/
or remove the battery pack, if detachable, from
the power tool before making any adjustments,
changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting
the power tool accidentally.
d) Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
e) Maintain power tools and accessories. Check for
misalignment or binding of moving parts, breakage
of parts and any other condition that may affect the
power tool’s operation. If damaged, have the power
tool repaired before use. Many accidents are caused
by poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc.
in accordance with these instructions, taking into
account the working conditions and the work to
be performed. Use of the power tool for operations
different from those intended could result in a hazardous
situation.
h) Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
5) Service
a) Have your power tool serviced by a qualified repair
person using only identical replacement parts. This
will ensure that the safety of the power tool is maintained.
SYMBOLS
To reduce the risk of injury, user must read
instruction manual
Warning
Wear eye protection
Wear ear protection
Wear dust mask
Double insulation

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COMPONENT LIST
1. ON-OFF switch
2. Palm grip handle
3. Dust box
4. Base plate
5. Clamp lever
6. Clamp lever lock
7. Sanding paper* (See fig. A)
8. Sand paper clamp
9. Motor housing
10. Paper punch* (See fig. B)
11. Vacuum adaptor* (See fig. E)
* Not all the accessories illustrated or described are included in standard delivery.
TECHNICAL DATA
Type Designatio WS4151U.1 (PPS240BU) (41-designation of machinery, representative of Sander)
Voltage 120 V~60 Hz
Amps 2 A
No load speed 12000 /min
Dimension of base 4˝*4-5/16˝
Orbital dia 1/16˝
Protection class /II
Machine weight 3.3 lbs
ACCESSORIES
Dust box 1
Dust extraction adaptor 1-1/4”(32mm) 1
Paper punch 1
60 grit clamp sanding paper 4
80grit clamp sanding paper 4
120 grit clamp sanding paper 4
We recommend that you purchase your accessories from the same store that sold you the tool. Refer to the accessory
packaging for further details. Store personnel can assist you and offer advice.

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OPERATING INSTRUCTIONS
NOTE: Before using the tool, read the instruction book carefully.
1. CHANGING THE SANDING PAPER (See Fig. A)
To fit new sanding paper, lift up the clamp lever out of
clamp lever lock to loosen the paper clamp (8), then insert
approximately 3/16”(5mm) of one end of the sanding paper
under the sanding paper clamp (8) until the paper contacts
the housing wall. Lift up the clamp lever (5) and move it to
the lever lock position. Wrap the sanding paper around the
base plate as tightly as possible and fix the end under the
other sanding paper clamp (8).
Make sure that the sanding paper is square to the base
plate. If not, remove and refit it again. The sanding paper
must be tightly fitted over the base plate and secured by
both the locking clamps (8). This will provide a safe and
efficient sanding environment.
To remove the sanding paper, lift up the clamp lever (5) and
move away from the clamp lever lock (6). The sanding paper
clamp (8) is now loose. Repeat with the other clamp on the
opposite side of your sander.
2. PAPER PUNCH (See Fig. B)
If sanding paper is unperforated, use the paper punch (10)
to create the dust extraction holes.
Position the punch over the base plate (4) with the punch
sides on the edges of the base-plate.
Press the punch into the base plate to punch holes into the
sanding paper. Then remove the punch and check all the
holes have been formed correctly.
3. USING THE DUST BOX (See Fig. C,D)
A) ATTACH THE DUST BOX (See Fig. C)
Your sander is equipped with a dust collection box. To
attach, slide the dust box onto the dust extraction outlet
piece and take care that the dust box locks in the grooves
of the outlet.
CAUTION: To prevent the possibility of sanding dust or foreign body being thrown into your face or
eyes, never attempt to use your sander without the dust box
properly installed.
B) EMPTYING DUST BOX (See Fig. D)
For more efficient operation, empty dust box every
5-10mins. This will create better air flow and ventilation.
To empty the dust box, pull off the dust box off of the dust
extraction outlet and shake out dust.
4. ATTACHING SANDER TO VACUUM ADAPTOR (See
Fig. E)
Your sander is equipped with a ø1-1/4” (inner diameter)
vacuum adapter (11).
If the outer diameter of vacuum hose is ø 1-1/4”, insert the
ø 1-1/4” adapter (11) into the back of dust extraction outlet.
Then connect the hose of a vacuum cleaner into the dust
adapter.
NOTE: Please pull the vacuum adapter and make sure it is
tightened securely on the dust outlet.
If the outer diameter of vacuum hose is ø1-3/8”, insert the
hose directly into the back of dust outlet.
Please turn on the vacuum cleaner, and then turn on the
sander. If you stop sanding, first turn off the sander, then
turn off your vacuum cleaner.
5. OPERATING THE SWITCH (See Fig. F)
To start your sander, depress the protective cover over the
switch at the position marked“—”. To stop your sander,
depress the protective cover at the position marked “0”.
6. FLUSH SANDING FACILITY (See Fig. G)
The sander can sand flush on three sides of the baseplate
making it easy to sand corners and edges of mouldings.
7. ORBITAL SANDING
Your sander operates in small circular rotations which
allows efficient material removal. Operate your sander in
long sweeping movements across your workpiece and even
across the grain. For a finer finish, always use a fine grain
sanding paper and only move the sander in the direction
of the wood grain and never across the grain. Do not allow
your sander to remain in the same position otherwise you
will remove material and create an uneven surface.
WORKING HINTS FOR YOUR SANDER
If your power tool becomes too hot, especially when used
at low speed, set the speed to maximum and run it with
no load for 2-3 minutes to cool the motor. Avoid prolonged
usage at very low speeds. Always use sand paper that
is suitable for the material you want to sand. Always
ensure the work-piece is firmly held or clamped to prevent
movement. Any movement of the material may affect
the quality of the sanding finish. Start your sander before
sanding and turn it off only after you stop sanding. For the
best results, sand wood in the direction of the grain. Do not
start sanding without having the sandpaper fitted. Do not
allow the sandpaper to wear away it will damage the base-
plate. The guarantee does not cover base-plate wear and
tear. Use coarse grit paper to sand rough surfaces, medium

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grit for smooth surfaces and fine grit for the final surfaces.
If necessary, first make a test run on scrap material. Use
only good quality sandpaper. The sandpaper controls the
sanding efficiency, not the amount of force you apply to the
tool. Excessive force will reduce the sanding fficiency and
cause motor overload. Replacing the sandpaper regularly
will maintain optimum sanding efficiency.
MAINTAIN TOOLS WITH CARE
Remove the plug from the socket before carrying out
any adjustment, servicing or maintenance.
Keep tools sharp and clean for better and safer
performance. Follow instructions for lubricating and
changing accessories. Inspect tool cords periodically and
if damaged, have repaired by authorized service facility.
Your power tool requires no additional lubrication or
maintenance. There are no user serviceable parts in your
power tool. Never use water or chemical cleaners to clean
your power tool. Wipe clean with a dry cloth. Always store
your power tool in a dry place. Keep the motor ventilation
slots clean. Keep all working controls free of dust.
If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.