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CARBON FIBRE
RANDOM
ORBITAL SANDER
WITH DUAL BASES
ROS150CF
INSTRUCTION MANUAL
Black
Cyan
Magenta
Yellow
Code: ROS150CF Instruction Manual
Date: 080702 Edition: 06 Op: PS
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Warranty Power Tools
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.
The product is warranted for a 2-year repair warranty for
home domestic use from the date of original purchase.
If found to be defective in materials or workmanship, the
tool will be repaired free of charge.
A
small freight charge may apply. 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 items or included accessories. Only the
power tool is covered under this warranty.
With continuing product development, changes may have
occurred which render the product received slightly
different to that shown in this instruction manual.
Please ensure that you store your receipt in a safe place.
Conditions apply to the above warranty. For full details of
the warranty terms and conditions please refer to our
website – www.gmcompany.com
For prompt service we suggest you log your service
request online - www.gmcservice.com.au, should you
not have access to the internet, please contact our
service department on 1300 880 001 (Australia)
or 0800 445 721 (New Zealand).
Contents
Warranty 2
Introduction 3
Environmental protection 3
Description of symbols 3
Specifications 3
General safety rules 4
Additional safety rules for sanders 5
Accessories 6
Know your product 7
Unpacking 8
Switching on and off 8
Changing the base 8
Fitting a sanding sheet 8
Using the sander 8
Adjusting the speed 9
Adjusting the auxiliary handle 9
Selecting the right grade of sandpaper 9
Dust extraction 10
Maintenance 10
General inspection 10
Replacing the carbon brushes 10
Power cord maintenance 11
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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
Input power: 430W
No load speed: 4000–12500 min
-1
Sandpaper attachment: Hook & Loop
Random orbital sanding
sheet size: Ø150mm and Ø125mm
Oscillating diameter: 2mm
Weight: 2.95kg
Sound pressure level 77.3 dB(A)
This sander is double insulated. There are two
independent barriers of insulation to protect you
from the possibility of electric shock.
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
.
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General safety rules
WARNING. Read 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 listed below refers to your mains operated (corded)
power tool or battery operated (cordless) power tool.
Save these instructions
1. Work area
a. Keep work area clean and well lit. Cluttered and 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.
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 safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c. 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.
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, clothing and gloves 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
extraction and collection facilities, ensure these are
connected and properly used. Use of these devices
can reduce dust related hazards.
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.
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c. 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.
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. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power tools
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 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 those intended could result in a
hazardous situation.
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.
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 muffs
Wear a breathing mask
Accessories
The GMC ROS150CF Dual Random Orbital Sander is
supplied with the following accessories as standard:
• Ø150mm Sanding base (fitted)
• Ø125mm Sanding base
• 1 Sandpaper sheet (Ø150mm X 80 grit)
• Allen key
• Dust extraction adaptor
• Dust canister
• Spare set of 2 carbon brushes
• Instruction manual
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12
Know your product
1. Auxillary handle
2. Auxillary handle lock knob
3. 150mm sanding base
4. On/off switch
5. Variable speed control
6. Rubber grip handle
7. Dust canister
8. Dust extraction port
9. Removable side clip (x 2) (for carbon brush access)
10. 125mm sanding base
11. Dust extraction adaptor piece
12. Washable dust bag
10
11 5
2
9 4 6
7
8
3
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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 on/off switch (4) forward to start the motor.
3. Pull the on/off switch (4) back to stop the motor.
4. Hold the tool securely and make sure that you have full
control at all times.
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 two interchangeable bases: a 150mm base
(3) fitted to the tool on purchase and a 125mm base (10)
supplied with the tool as an accessory.
1. Turn the sander upside
down and remove the four
hex screws using the hex
key (9) provided. Take off the
base assembly.
2. Place the replacement base
assembly on the tool and
secure it with the 4 hex screws
using the hex key (9) supplied.
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 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.
Tip. To maximise the life of the hook and loop base peel
the paper off slowly rather than rapidly removing it to avoid
damage to the hook and loop system.
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.
Using the sander
1. Grip the main handle (6) in one hand and push down on
the auxiliary handle (1) 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. 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.
WARNING. Do not use the sander in wet or damp conditions.
The manufacturer recommends the use of a residual current
device with a tripping current of 30mA or less.
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Adjusting the speed
The speed can be adjusted to
suit the material being sanded.
To adjust the speed, move the
variable speed control (5) until
you are satisfied that the speed
is what you need for the job
in hand.
Adjusting the auxiliary handle
The sander has two handles, the main handle (6) with
rubber grip and the auxiliary handle (1) which can be
adjusted to suit the operator’s needs.
1. To adjust the auxiliary
handle (1) loosen the
auxiliary handle lock (2)
enough so that you can
easily move the handle into
the desired position.
2. Re-tighten the auxiliary
handle lock (2).
Selecting the right grade of sandpaper
• Different grades of sanding paper can be purchased
from your local hardware store. Available grades are:
Coarse, Medium and Fine.
• Use a coarse grit to sand down rough finishes, medium
grit to smooth the work and fine grit to finish off.
• 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. Always ensure that the tool is switched
off and the plug is removed from the power point before
making any adjustments or maintenance procedures.
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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 canister (7)
to the dust extraction port
(8) of the sander by pushing
and twisting the bayonet
fitting.
WARNING. For optimum dust
extraction, remove and empty
the canister (7) when it is no
more than half full.
2. Remove the cap from the end of the canister (7) to
access the internal dust bag (12) when you wish to
replace or clean the bag. The bag (12) can be washed.
Make sure the bag is completely dry before replacing it.
3. The dust extraction adaptor piece (11) can be fitted into the
dust extraction port (8) in place of the dust canister (7).
4. The sander can then be connected to a household
vacuum cleaner or workshop dust extraction system.
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.
General inspection
Regularly check that all the fixing screws are tight. They
may vibrate loose over time.
Replacing the carbon brushes
1. To access a carbon brush, first prise open a side clip (9)
using a flat screwdriver then removing the clip.
2. Use a small flat screwdriver to unscrew the brush cap
and remove the carbon brush assembly.
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3. Insert the new brush
assembly and replace the
brush cap, tightening it with
a screwdriver. Replace the
side clip (9).
4. Repeat the operation for the
second brush on the other
side of the tool.
Note. After replacing the
brushes, you may notice sparking and a burning smell
when the tool is first used. This is not a hazard. The
excessive sparking and the burning smell will both soon
subside as the new brushes bed in.
Power cord maintenance
If the supply cord needs replacing, the task must be
carried out by the manufacturer, the manufacturer’s agent,
or a power tool repair centre in order to avoid a
safety hazard.
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GMC customer assist
If your product needs repairing or you simply need help
or advice, please contact us on our Customer Assist Line
1300 880 001 (Australia) or 0800 445 721 (New Zealand).
For prompt service we suggest you log your service request
online at www.gmcservice.com.au. Should you not have
access to the Internet, please contact our service department
on 1300 880 001 (Australia) or 0800 445 721 (New Zealand).
7am –7pm, 7days a week (AEST).
Please note that if repair is required, you must
provide a valid original purchase receipt.
You will need the following details at hand to log your service request;
Personal details: First & Last name, address, pick up address,
c
ontact phone numbers, email address
Product details: Product number, date of purchase, retailer bought from,
State & postcode, receipt number,
reason for the request,
c
opy of official purchase receipt
Attach your purchase receipt and save with this Manual for future reference
.
Please refer to our website www.gmcompany.com for full GMC warranty Terms and Conditions.
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