MasterForce 241-0804 Operating instructions
- Category
- Power tools
- Type
- Operating instructions
1
OPERATING MANUAL
2.6 A Random Orbit Sander
241-0804
Parts missing or damaged? Questions? Toll-Free Help Line –
1-866-917-4374
IMPORTANT :
IMPORTANT:Read this operating manual carefully before using your new
tool.Pay close attention to all Safety Instructions, Warnings, and Caution
sections.Use this tool properly, and only for its intended use.
Safety symbols in this manual are used to indicate possible dangers. The
safety symbols and their explanations require your full understanding. The
safety warnings do not by themselves eliminate any danger, and they are not
a substitute for proper accident prevention measures.
This Safety Alert Symbol indicates caution, warning, or danger. Failure
to obey a safety warning may result in serious injury to yourself or others.
To reduce the risk of injury, fire, or electric shock, always follow the safety
precautions.
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TABLE OF CONTENTS
Specification……………..…………………………..………..…..……Page 2
Rules for Safe Operation…………………………………………….…Page 3
Operation..………..………..………..………..………..………..………Page 7
Accessories..………..………..………..………..………..………...… Page 12
Maintenance..………..………..………..………..………..………..…Page 13
Exploded view and part list.............................................................................Page14
Warranty..………..………..………..………..………..………..…...…Page 16
SPECIFICATIONS
Motor: 120 V 60 Hz 2.6 A
Speed: 9000 -13000 OPM (no load)
Pad size: 5”
Pad type:
Hook and loop fastening system with
8-holes
Weight: 6 lb 14 oz (3.1 kg)
RULES FOR SAFE OPERATION
KNOW YOUR TOOL
Before operating this tool, carefully read this operating manual and all of
the labels affixed to the random orbit sander. Keep this manual available for
future reference.
IMPORTANT
This tool should only be serviced by a qualified service technician.
READ ALL INSTRUCTIONS THOROUGHLY
GENERAL SAFETY RULES FOR ALL POWER TOOLS
WARNING:Read and understand all instructions. Failure to follow all in-
structions listed below may result in electric shock, fire and/or serious per-
sonal injury.
WORK AREA
Keep the work area clean and well lit. Cluttered benches and dark areas
invite accidents.
Do not operate power tools in an explosive environment, such as in the
presence of flammable liquids, gases, or dust. Power tools create sparks
which may ignite dust or fumes.
Keep bystanders, children, and visitors away while operating a power
tool.Distractions can cause you to lose control.
ELECTRICAL SAFETY
Double insulated tools are equipped with a polarized plug (one blade is
wider than the other.) This plug will fit in a polarized outlet only one way.
If the plug does not fit fully in the outlet, reverse
the plug. If it still does not fit, contact a qualified
electrician to install a polarized outlet. Do not
change the plug in any way. Double insulation
eliminates the need for the three wire grounded
power cord and grounded power supply system.
Avoid body contact with grounded surfaces such
as pipes, radiators, ranges and refrigerators.
There is an increased risk of electric shock if your
body is grounded.
120V ~ 60Hz
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5
Don’t expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
Do not abuse the cord. Never use the cord to carry the tools or pull
the plug from an outlet. Keep cord away from heat, oil, sharp edges or
moving parts. Replace damaged cords immediately. Damaged cords
increase the risk of electric shock.
When operating a power tool outside, use an outdoor extension cord
marked “W-A” or “W”. These cords are rated for outdoor use and reduce
the risk of electric shock. The following table shows the correct size to
use, depending on cord length and nameplate amperage rating of the tool.
When in doubt, use the next heavier gauge. Always use UL and CSA listed
extension cords.
Recommended sizes of extension cords
Tool’s Ampere rating Volts
Total length of cord in feet
Cord size in A. W. G.(minimum)
25’ 50’ 100’ 150’
0-6
120
V~
18 16 16 14
6-10 18 16 14 12
10-12 16 16 14 12
12-16 14 12 Not Recommended
PERSONAL SAFETY
Stay alert, watch what you are doing and use common sense when
operating a power tool. Do not use tool while tired or under the influence
of drugs, alcohol, or medication. A moment of inattention while operating
power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
Avoid accidental starting. Be sure switch is off before plugging in.
Carrying tools with your finger on the switch or plugging in tools that have
the switch on invites accidents.
Remove adjusting keys or wrenches before turning the tool on.A wrench
or a key that is left attached to a rotating part of the tool may result in
personal injury.
Do not overreach. Keep proper footing and balance at all times.Proper footing
and balance enables better control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection.Dust mask, non-skid safety
shoes, hard hat, or hearing protection must be used for appropriate conditions.
Before connecting the tool to a power source (receptacle, outlet, etc.), be
sure voltage supplied is the same as that specified on the nameplate of
the tool. A power source with voltage greater than that specified for the
tool can result in serious injury to the user – as well as damage to the tool.
TOOL USE AND CARE
Use clamps or other practical way to secure and support the workpiece
to a stable platform. Holding the work by hand or against your body is
unstable and may lead to loss of control.
Do not force tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which is designed.
Do not use tool if switch does not turn it on or off. Any tool that cannot be
controlled with the switch is dangerous and must be repaired.
Disconnect the plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the tool accidentally.
Store idle tools out of reach of children and other untrained persons.
Tools are dangerous in the hands of untrained users.
Maintain tools with care. Keep cutting tools sharp and clean. Properly
maintained tools, with sharp cutting edges are less likely to bind and are
easier to control.
Check for misalignment or binding of moving parts, breakage of parts,
and any other condition that may affect the tools operation. If damaged,
have the tool serviced before using. Many accidents are caused by poorly
maintained tools.
Use only accessories that are recommended by the manufacturer for
your model. Accessories that may be suitable for one tool, may become
hazardous when used on another tool.
Do not alter or misuse tool. These tools are precision built. Any alteration or
modification not specified is misuse and may result in a dangerous condition.
Service
Tool service must be performed only by qualified repair personnel.
Service or maintenance performed by unqualified personnel could result
in a risk of injury.
When servicing a tool, use only identical replacement parts. Follow
instructions in the Maintenance section of this manual. Use of
unauthorized parts or failure to follow Maintenance Instructions may
create a risk of electric shock or injury.
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SPECIFIC SAFETY RULES FOR SANDER
Hold tool by insulated gripping surfaces when performing an operation
where the cutting tool may contact hidden wiring or its own cord.
Contact with a “live” wire will make exposed metal parts of the tool “live”
and shock the operator.
Always wear safety goggles and a dust mask when sanding, especially
sanding over-head.
A suitable breathing respirator must be worn while sanding chemically
pressure treated objects.
The machine is not suitable for wet sanding.
Do not use sanding paper larger than needed. Extra paper extending
beyond the sanding pad can cause serious lacerations.
The dust bag shall be equipped with the tool. And it shall be emptied
frequently. Do not throw sanding dust on an open fire because materials in
fine particle form may be explosive.
OPERATION
KNOW YOUR RANDOM ORBIT SANDER (see Fig. 1)
Before attempting to use this random orbit sander, familiarize yourself with
all of its operating features and safety requirements.
WARNING: Do not allow familiarity with your random orbit sander to make
youcareless. Remember that a fraction of a second of carelessness is enough
to cause severe injury.
1. Dust-sealed ON/OFF rocker
switch
2. Cord guard
3. Sanding pad
4. Dust box
5. Speed selector
Fig. 1
5
2
1
3
4
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9
ASSEMBLY AND ADJUSTMENTS
WARNING: Remove the random orbit sander from the carton, and examine
itcarefully. Do not discard the carton or any packaging material until all parts
have been examined.
WARNING: If any part of the sander is missing or damaged, do not plug the
sander in until the damaged part is repaired or replaced.
WARNING: To avoid injury, ALWAYS turn the switch to the OFF position and
disconnect the random orbit sander from the power outlet before installing or
changing the abrasive discs or dust bag attachment.
INSTALLING AND REMOVING THE ABRASIVE DISC
To install:
1. Remove all sanding dust or dirt from the sanding pad.
2. Align the holes on the abrasive disc with the holes in the sanding pad,
making sure it is centred and that the edges are aligned with the edges of
the sanding pad.
Note: The holes in the abrasive
disc must line up with the holes in
the sanding pad in order for the
dust collection system to function
properly.
3. Press the abrasive disc to the
pad.
To remove:
• Peel the disc off the sanding pad.
INSTALLING AND REMOVING THE DUST BOX
To install:
Put the dust drawer back into the dust box. Close the dust box door, making
sure the released button is engaged securely
To remove:
Press the release button of the dust box door in order to open the door fully
(Fig. 3). Pull out the dust drawer and empty it (Fig. 4).
DUST-SEALED ON/OFF ROCKER SWITCH
This random orbit sander is equipped with an ON/OFF rocker switch that is
located on the front of the handle.
1. To turn the sander ON, push the I side of the rocker switch.
2. To turn the sander OFF, push the O side of the rocker switch.
SPEED SELECTOR
Use a practice piece of material to determine the right speed for each job.
Vary the speed in order to find the best speed for the accessory that you are
using and the job to be done.
Fig. 2
Fig. 3 Fig. 4
Fig. 5
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GENERAL SANDING
WARNING: Finish sanding can produce clouds of fine sanding dust that
could ignite in the presence of sparks or an open flame. To avoid injury, always
use your sander in a well-ventilated area.
WARNING: For your safety, and in order to avoid damage, only turn the
sander ON and OFF when the sander is contacting a surface.
1. Place the sander on the workpiece BEFORE turning the switch to
the ON position. If the sander is started before making contact with the
workpiece, the free-floating workpad may cause scratches.
2. Sand using a circular or elliptical motion while applying slight pressure.
3. Random orbit sanders can be moved across the workpiece in any
direction. If you are sanding wood, you can sand in any direction,
regardless of the grain of the wood.
4. The amount of downward pressure will affect the rotation speed and the
sanding results:
a. Light pressure: recommended for fine work
b. Moderate pressure: recommended for rough work.
c. Heavy pressure: does not allow the disc to rotate properly.
5. Keep the sanding disc flat on the workpiece. Using the edges of the pad or
tipping the sander may cause an uneven finish, and may reduce the life of
the sanding pad.
6. Keep the sander moving in broad, even strokes across the workpiece.
Sanding in one spot for too long may cause gouging and uneven results.
7. Random orbit sanders work more aggressively than simple orbital
sanders.
Check your workpiece frequently.
8. Begin sanding with a coarser grit sandpaper, and gradually use finer and
finer grits, until the desired finish is achieved. Do not switch from a coarse
grit to a very fine grit in one step.
SANDING OPERATION
WARNING: To avoid injury, always unplug the sander before attaching or
removing sanding discs or the dust bag.
1. Attach the sanding disc and the dust bag.
2. Place the sander on the workpiece, and turn the sander ON.
3. Keep the sanding disc flat on the workpiece and constantly moving across
the workpiece. Use long, sweeping circular or elliptical strokes.
4. When you are finished sanding, switch the tool OFF and wait until
the sander has come to a complete stop before removing it from the
workpiece.
REMOVING PAINT OR VARNISH
1. When removing several layers of paint or varnish, remove as much as
possible with a paint or varnish remover.
2. Scrape the residue off with a putty knife or scraping tool, and allow the
surface to cool and dry before sanding.
3. Select and install a coarse grit sandpaper.
4. Keep the sander moving over new areas in order to avoid heating and
softening the old coating.
5. Work in wide, overlapping strokes in order to achieve a uniform finish.
6. As the workpiece begins to show through the old coating, switch to a
medium grit sandpaper in order to avoid scratching the surface. Gradually
switch to a finer grit until you achieve the desired finish.
SANDPAPER SELECTION (PURCHASE SEPARATELY)
Sandpaper can be made from various grit materials. The grit material
and coarseness of the sandpaper should be selected according to the type
of workpiece.
Workpiece material Grit material
Fine woodwork Gamet or aluminium oxide
Rough woodwork Aluminium zirconia or ceramic
Manufactured wood products Silicon carbide or aluminium oxide
Solid surfacing material Silicon carbide or aluminium oxide
Metals Emery or aluminium oxide
Sandpaper is also graded according to coarseness. Start your work with
an abrasive grit that is just coarse enough to remove the high spots and
excessive roughness. Follow with a second sanding, using a grit that is one
or two grades finer. Continue with successively finer grits until you achieve
the desired finish.
Do not switch from a coarse grit to a very fine grit in one step. It may be
difficult to remove the marks made by the coarse grit. Use the coarsest grits
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for the roughing operation, and finish by using successively finer grits.
Coarse Grit 60–80
Initial sanding on rougher surfaces.
For fast stock removal.
Rough sanding and stripping of painted and rusted surfaces.
Medium Grit 100–140
Intermediate sanding.
Removal of minor surface imperfections.
Fine Grit 150–220
Fine sanding.
Sanding prior to staining, priming, or sealing.
ACCESSORIES:
Sanding disc 5pcs
Dust box 1pc
MAINTENANCE
Before each use inspect the random orbit sander, the ON/OFF switch, and the
cord for damage. Check for damaged, missing, or worn parts. Check for loose
screws, misalignment or binding of moving parts, or any other condition that
may affect the operation. If abnormal vibration or noise occurs, turn the tool
off immediately, and have the problem corrected before further use.
The tool should be unplugged from the power supply before cleaning
or performing any maintenance. Using compressed air may be the most
effective cleaning method. Always wear safety goggles when cleaning tools
with compressed air
WARNING: Do not let brake fluids, gasoline, petroleum-based products,
penetrating oil, etc., come into contact with plastic parts. They contain chemi-
cals that can damage, weaken, or destroy plastic.
WARNING: When servicing, use only identical replacement parts. The use
of any other parts may create a hazard or cause damage to the product.
WARNING: Use only accessories that are recommended for your model by
the manufacturer. Accessories that may be suitable for one tool may become
hazardous when used on another tool.
WARNING: Maintain tools with care. Properly maintained tools work to
their best advantage and are easier to control
WARNING: Check the power cord before each use. If it is damaged, re-
place it immediately. Never use a tool with a damaged cord.
WARNING: To ensure safety and reliability, all repairs should be performed
bya qualified service technician.
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Exploded View Parts List
No. Part Name Qty
1 Power Cord & Plug 1
2 Cord Guard 1
3 Tapping Screw 3.5x16 2
4 Cord Anchorage 1
5 Speed Adjuster 1
6 Brush Holder 2
7 Ball Bearing 1
8 Plain Washer 1
9 Switch 1
10 Carbon Brush 2
11 Fixing Board 1
12 Switch Cover 1
13 Left Housing Assy 1
14 Tapping Screw 2.2x13 4
15 Dust Box Cover 1
16 Right Dust Box 1
17 Filter Assy 1
18 Left Dust Box 1
19 Rotor 1
20 O Ring 1
21 Ball Bearing 1
22 Plain Washer 2
23 Stator 1
24 Tapping Screw 4x20 4
25 Tapping Screw 4.2x9.5 2
26 Right Housing Assy 1
27 Dust Fan 1
28 Cover 1
29 Fan Buffle 1
30 Brake Ring 1
31 Bearing Support 1
32 Plain Washer 1
33 Ball Bearing 1
34 Washer 1
35 Screw M4x12 1
36 Bearing Cover 1
37 Base Pad 1
38 Plain Washer 4
39 Spring Washer 4
40 Screw M4x14 4
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WARRANTY
If, during normal use, this MASTERFORCE
TM
power tool breaks or fails due
to a defect in material or workmanship within three years from the date of
original purchase, simply bring this tool and its sales receipt back to your
nearest Menards
®
retail store for a free equivalent replacement within those
three years.
The warranty:
(1) excludes expendable parts including but not limited to blades, bits, light
bulbs, and/or batteries;
(2) shall be void if this tool is used for commercial or/and rental purposes;
and
(3) does not cover any losses, injuries to persons/properties, or costs. This
warranty does give you specific legal rights and you may have other
rights, which vary from state to state.
*SAVE YOUR RECEIPTS. Your warranty is void without them. For help, please
call to our customer center, toll free number: 1-866-917-4374.
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MasterForce 241-0804 Operating instructions
- Category
- Power tools
- Type
- Operating instructions
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