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• Melbourne • Perth • Auckland • Hong Kong • Shanghai
• Taipei • New York • Verona • London • Paris
INSTRUCTION MANUAL
230W
3 in 1
Combination Sander
MOS230
040 33 0 MOS 23 0 ED 9
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Contents
Full 2 Years Home Use Warranty
Whilst every effort is made to ensure your complete
satisfaction with this tool, occasionally, due to the mass
manufacturing techniques, a tool may not live up to our
required level of performance and you may need the
assistance of our service department.
This product is warranted for a 2-year period for home
domestic use from the date of the original purchase. If
found to be defective in materials or workmanship, the
tool or the offending faulty component will be replaced
free of charge with another of the same item. A small
freight charge may apply.
The warranty replacement unit is only made available by
returning the tool to the place of purchase with a
confirmed register receipt. Proof of purchase is essential.
We reserve the right to reject any claim where the
purchase cannot be verified.
This warranty does not include damage or defects to the
tool caused by or resulting from abuse, accidents,
alterations or commercial or business use.
It also does not cover any bonus accessories unless the
tool is a GMC Platinum Professional model.
Please ensure that you store your receipt in a safe place
.
Conditions apply to the above warranty.
If you need direction of what constitutes a free of
charge warranty claim, please review the guide given on
the rear of the Receipt Holder. An indication is given as
to the types of claim that are permissible, and those
that are not.
Warranty 2
Introduction 3
Environmental Protection 3
Description of symbols 3
Specifications 3
Safety instructions 4
Additional safety rules for sanders 5
Accessories 6
Unpacking 6
Know your product 7
Switching on and off 8
Using the sander 8
Changing the base 8
Fitting a sanding sheet 8
Selecting the right grade of sandpaper 9
Dust extraction 9
Maintenance 9
General inspection 10
Repairs 10
Power cord maintenance 10
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Dear Customer
If you require any help with your product, whether it
is a Warranty claim, spare part or user information,
please phone our Help Line for an immediate response.
Phone 1300 880 001 in Australia or 0800 445 721 in
New Zealand.
Introduction
Your new GMC power tool will more than satisfy your
expectations. It has been manufactured under stringent
GMC Quality Standards to meet superior performance
criteria.
You will find your new tool easy and safe to operate,
and, with proper care, it will give you many years of
dependable service
.
Caution. Carefully read through this entire Instruction
Manual before using your new GMC Power Tool. Take
special care to heed the Cautions and Warnings
.
Your GMC power tool has many features that will make
your job faster and easier. Safety, performance, and
dependability have been given top priority in the
development of this tool, making it easy to maintain
and operate
.
Environmental protection
Recycle unwanted materials instead of
disposing of them as waste. All tools, hoses
and packaging should be sorted, taken to
the local recycling centre and disposed of
in an environmentally safe way.
Description of symbols
The rating plate on your tool may show symbols. These
represent important information about the product or
instructions on its use.
Wear hearing protection.
Wear eye protection.
Wear breathing protection.
Double insulated
for additional protection.
Conforms to relevant standards for
electromagnetic compatibility.
Specifications
Voltage: 230-240V ~ 50Hz
Power rating: 230W
No load speed: 10000 min
Sandpaper type: Hook and loop
Random orbital sanding sheet size: Ø125mm
Overall detail sanding
sheet size: 208mm x 110mm
1/3 Sheet sanding sheet size: 187mm x 90mm
Net weight: 2kg
Length of cordset: 3m
This sander is double insulated. There are two independent
barriers of insulation to protect you from the possibility of
electric shock.
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Safety Instructions
WARNING. Read and understand all instructions. Failure
to follow all instructions listed below may result in
electric shock, fire and/or serious injury. The term
“power tool” in all of the warnings below refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Save these instructions
Work area
• Keep work area clean and well lit. Cluttered and dark
areas invite accidents.
• 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.
• Keep children and bystanders away while operating a
power tool. Distractions can cause you to
lose control.
Electrical safety
• 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.
• 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.
• Do not 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 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.
• When operating a power tool outdoors, use an outdoor
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of
electric shock.
Personal safety
• 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.
• Use safety equipment. Always wear eye protection.
Safety equipment such as a dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
• Avoid accidental starting. Ensure the switch is in the
off-position before plugging in. Carrying power tools
with your finger on the switch or plugging in power
tools that have the switch on invites accidents.
• Remove any adjusting key or wrench before turning the
tool on. A wrench or a key that is left attached to
a rotating part of the power tool may result in
personal injury.
• Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool
in unexpected situations.
• Dress properly. Do not wear loose clothing or jewellery.
Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair can be
caught in moving parts.
• If devices are provided for the connection of dust
extraction and collection facilities ensure that these are
connected and properly used. Use of these devices can
reduce dust-related hazards.
Power tool use and care
• 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.
• 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.
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• Disconnect the plug from the power source before
making any adjustments, changing accessories, or
storing power tools. Such preventive safety measures
reduce the risk of starting the power tool accidentally.
• 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.
• Maintain power tools. 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.
• Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits etc.,
in accordance with these instructions and in the
manner intended for the particular type of power
tool, taking into account the working conditions and
the work to be performed. Use of the power tool for
operations different from intended could result in a
hazardous situation.
Service
• Have your power tool serviced by a qualified repair
personnel using only identical replacement parts. This
will ensure that the safety of the power tool
is maintained.
Additional safety rules for sanders
Remove the plug from the socket before carrying out any
adjustment, servicing or maintenance.
• Fully unwind cable drum extensions to avoid
potential overheating.
• When an extension cable is required, you must ensure it
has the right ampere rating for your power tool and is
in a safe electrical condition.
• Ensure your mains supply voltage is the same as your
tool rating plate voltage.
• Your tool is double insulated for additional
protection against a possible electrical insulation failure
within the tool.
• Always check walls, floors and ceilings to avoid hidden
power cables and pipes.
• After long working periods external metal parts and
accessories could be hot.
• Do not force the sander; let the tool do the work at a
reasonable speed. Overloading will occur if too much
pressure is applied and the motor slows resulting in
inefficient sanding and possible damage to the
sander motor.
• When sanding wood, always connect the dust
extraction filter.
• Take special care to guard against harmful and toxic
dusts when sanding lead-based painted surfaces, woods
and metals, including the following:
- All persons entering the work area must wear a mask
specially designed for protection against toxic dust
and fumes such as those arising from the sanding of
lead paint .
- Children and pregnant women must not enter the
work area.
- Do not eat, drink or smoke in the work area.
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• Before using the sander with metal always remove the
extraction filter from the outlet as sparks may ignite the
dust or the internal bag.
• Do not continue to use worn, torn or heavily clogged
sanding sheets.
• Do not touch the moving sanding sheet.
• Ensure that you have removed foreign objects such
as nails and screws from the work before
commencing sanding.
• Rags, cloths, cord, string and the like should never be
left around the work area.
Wear goggles
Wear ear defenders
Wear a breathing mask
Accessories
The GMC 3 in 1 Combination Sander is supplied with the
following accessories as standard:
• Detail sanding base
• Random orbital sanding base
• 1/3 Sheet sanding base
• 3 Sandpaper sheets to suit the detail base
1 x 60, 1 x 80, 1 x 120 grit
• 3 Sandpaper sheets to suit the Random orbital base
1 x 60, 1 x 80, 1 x 120 grit
• 3 Sandpaper sheets to suit the 1/3 sheet base
1 x 60, 1 x 80, 1 x 120 grit
• Fixing screws (x4)
• Allen key
• Storage case
• Instruction manual
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Know your product
1. On/off switch
2. Handle
3. Dust extraction canister
4. Fixing screws (x 4)
5. Allen key
6. Detail base
7. Random orbital base
8. 1/3 Sheet base
1
2
3
6
7
8
4
7
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Unpacking
Due to modern mass
production techniques, it is
unlikely that your GMC Power
Tool is faulty or that a part is
missing. If you find anything
wrong, do not operate the
tool until the parts have been
replaced or the fault has been
rectified. Failure to do so could
result in serious personal injury.
Switching on and off
1. Connect the plug to the power supply.
2. Push the left-hand side “I” of the sealed on/off switch
(1) to start the motor.
3. Push the right-hand side “O” of the sealed on/off
switch (1) to stop the motor.
4. Hold the tool securely and make sure that you have full
control at all times.
Using the sander
1. Grip the rear of the handle (2) in one hand and push
down on the front of the handle with the other hand.
Take care to hold the sanding surface parallel to
the work.
2. Do not press down heavily. This will slow down the
motor and could damage it.
3. Let the sandpaper do the work.
4. When using the random orbital base (7), take care that
the whole base is resting on the workpiece when you
switch on the sander. After
switching off, keep the base
on the sander until the
motor stops.
5. When using the detail base
(6) and 1/3 sheet base
(8), switch the sander on
with the base away from
the workpiece. Let the motor reach full speed then
carefully begin sanding. Remove the sander form the
workpiece before switching off.
WARNING. Do not use the sander in wet or damp
conditions.
Changing the base
WARNING. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
There are three interchangeable bases:
• Detail base (6) – ideal for flat sanding and for reaching
into corners and along edges.
• Random orbital base (7) – designed to rapidly smooth
down large flat surfaces where the random action
helps prevent the occurrence of swirl marks and other
scratches.
• 1/3 Sheet base (8)
– for general sanding over
moderately-sized areas.
1. Remove the four hex fixing
screws (4) using the allen
key (5) provided.
2. Fit the base required for
the sanding operation
and replace the four
fixing screws (4), with the allen key provided.
Fitting a sanding sheet
WARNING. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
1. Before fitting sandpaper, remove any dust or debris
from the hooks and loops of the base.
2. Match the holes in a suitable sheet with the holes in
the base.
3. Simply press the sheet to the base to attach it.
4. To remove the sheet, peel it away from the base.
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CAUTION. Take care to regularly clean out the build up of
dust on the base underneath the sandpaper and not to let
the sandpaper wear completely down before replacing it.
Failure to observe these two precautionary measures can
lead to damage to the hooks and loops on the platen and
the sandpaper will not attach properly.
WARNING. Never use the sander unless the entire base is
fitted with sandpaper or another type of pad.
Selecting the right grade of sandpaper
WARNING. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
1. Different grades of sanding paper can be purchased
from your local hardware store. Available grades are:
Coarse, Medium and Fine.
2. Use a coarse grit to sand down rough finishes, medium
grit to smooth the work and fine grit to finish off.
3. It is best to make a trial run on a scrap piece
of material to determine the optimum grades of
sandpaper for a particular job. If there are still marks
on your work after sanding, try either going back to
a coarser grade and sanding the marks out before
recommencing with the original choice of grit, or
try using a new piece of sandpaper to eliminate the
unwanted marks before going on to a finer grit and
finishing the job.
WARNING. Do not use the same sanding sheet for wood
and metal. Metal particles become embedded in the
sandpaper and will scour a wooden surface.
Dust extraction
WARNING. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
1. Attach the dust extraction canister (3) to the sander
by pushing and twisting the bayonet fitting in a similar
action to inserting a light globe into a lamp.
WARNING. For optimum dust extraction, remove and
empty the canister when it is no more than half full. Do
not use the canister when sanding metal. The hot metal
particles could cause residual wood dust or the internal
bag itself to catch fire.
2. Remove the silver cap from the end of the canister (3)
to access the internal bag when you wish to replace or
clean the bag. The bag can be washed. Make sure the
bag is completely dry before replacing it.
Maintenance
WARNING. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
1. Keep the tool’s air vents unclogged and clean at
all times.
2. Regularly check to see if any dust or foreign matter has
entered the grills near the motor and around the
on/off switch. Use a soft brush to remove any
accumulated dust. Wear safety glasses to protect
your eyes whilst cleaning.
3. If the body of the tool needs cleaning, wipe it with
a soft damp cloth. A mild detergent can be used but
nothing like alcohol, petrol or other cleaning agent.
4. Never use caustic agents to clean plastic parts.
CAUTION. Water must never come into contact with
the tool.
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General Inspection
Regularly check that all the fixing screws are tight. They
may vibrate loose over time.
Repairs
Only an authorised service centre should replace the
cordset or carry out other repairs. If the cordset is
damaged or worn, have it replaced by an authorised
service centre.
Power cord maintenance
If the supply cord needs replacing, the task must be carried
out by the manufacturer, the manufacturer’s agent, or an
authorised service centre in order to avoid a safety hazard.
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Carefully read the entire Instruction Manual
before using this product.
Before returning this product for a
Warranty Claim or any other reason
Please Call 1300 880 001 (Australia)
or 0800 445 721 (New Zealand)
When you make your call, please have
the following information at hand:
• GMC Product Type • GMC Product Code
A GMC Service Engineer will take your call and, in
most cases, will be able to solve your problem over
the phone.
You are welcome to use this phone-in service to
make suggestions or give comments about any
GMC product.
With continuing product development changes may
have occurred which render the product received
slightly different to that shown in this instruction
manual. The manufacturer reserves the right to
change specifications without notice. Note:
Specifications may differ from country to country.
The GMC 777 Helpline operates from 7am to
7pm, 7 days a week (EST). This allows you
to contact GMC directly with any queries and
technical questions you have regarding
our products.
45–55 South Centre Road
Melbourne Airport
Victoria, Australia 3045
Tel: (03) 8346 1100 Fax: (03) 8346 1200
Save this Manual for future reference.
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