950W
ROTAR
HAMM
MAG950HD
INSTRUCTION
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Introduction
Description of symbols
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.
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.
You will find your new tool easy and safe to operate,
and, with proper care, it will give you many years
of dependable service.
Double insulated for additional protection.
CAUTION. Carefully read through this entire Instruction
Manual before using your new GMC Power Tool. Take
special care to heed the Cautions and Warnings.
Conforms to relevant standards
for electromagnetic compatibility.
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.
Specifications
Voltage:
230–240V ~ 50 Hz
950W
Power input:
Environmental protection
No load speed:
Chuck type:
0–1100min-1
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.
SDS
Keyed chuck capacity:
Impact frequency:
1.5 –13mm
0–5800 bpm
Drilling capacity:
Wood:
Steel:
40mm
13mm
26mm
Masonry:
Weight:
3.4kg
A weighted sound pressure: 92.6 dB(A)
A weighted sound power: 103.6 dB(A)
Typical weighted vibration: 8.43 m/s2
The sound intensity level for the operator may exceed
85dB(A) and sound protection measures are necessary
3
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3. Personal safety
General safety rules
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.
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
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.
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. 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.
c. Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
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.
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.
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.
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.
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.
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.
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.
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.
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.
4
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• If possible, always use clamps or a vice to hold your work.
• Always switch off before you put the drill down.
• Ensure that the lighting is adequate.
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.
• Do not put pressure on the drill, such that it slows the
motor down. Allow the drill bit to cut without pressure. You
will get better results and you will be taking better care of
your tool.
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.
• Keep the area free of tripping hazards.
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.
• Do not let anyone under 18 years operate this tool.
• Only use accessory bits in good condition.
• Before drilling, check that there is sufficient clearance for
the drill bit under the work piece.
• Do not touch the bit after operation. It will be very hot.
• Keep your hands away from under the work piece.
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.
• Never use your hands to remove sawdust, chips or waste
close by the bit.
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.
• Rags, cloths, cord, string and the like should never be left
around the work area.
• Support the work properly.
• If you are interrupted when operating the drill, complete
the process and switch off before looking up.
• Periodically check that all nuts, bolts and other fixings are
properly tightened.
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.
• When using the drill, use safety equipment including
safety glasses or shield, ear defenders, and protective
clothing including safety gloves. Wear a dust mask if the
drilling operation creates dust.
Additional safety rules for drills
WARNING. Before connecting a tool to a power source
(mains socket power point receptacle, outlet, etc.) be sure
that the voltage supply is the same as that specified on the
nameplate of the tool. A power source with a voltage greater
than that specified for the tool can result in serious injury to
the user, as well as damage to the tool.
Wear ear protectors with hammer drills.
Exposure to noise can cause hearing loss.
Use auxiliary handles supplied with the tool.
Loss of control can cause personal injury.
• Fully unwind cable drum extensions to avoid potential
overheating.
If in doubt, do not plug in the tool. Using a power source
with a voltage less than the nameplate rating is harmful to
the motor.
• When an extension cable is required, you must ensure
that it has the right ampere rating for your power tool and
is in safe electrical condition.
5
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The tool must be used only for its prescribed purpose.
Any use other than those mentioned in this Manual will
be considered a case of misuse. The user and not the
manufacturer shall be liable for any damage or injury
resulting from such cases of misuse.
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.
To use this tool properly, you must observe the safety
regulations, the assembly instructions and the operating
instructions to be found in this Manual. All persons who use
and service the machine have to be acquainted with this
Manual and must be informed about its potential hazards.
Children and frail people must not use this tool. Children
should be supervised at all times if they are in the area in
which the tool is being used. It is also imperative that you
observe the accident prevention regulations in force in your
area. The same applies for general rules of occupational
health and safety.
Contents of carton
• Depth gauge rod
• Auxiliary handle
• SDS Drill bits
12mm x 160mm
16mm x 210mm
18mm x 210mm
• SDS Chisel bits
Point chisel 250mm
Flat chisel 20mm x 250mm
• SDS Chuck adaptor
• 13mm Keyed chuck
• Chuck key
The manufacturer shall not be liable for any changes made
to the tool nor for any damage resulting from such changes.
Even when the tool is used as prescribed it is not possible to
eliminate all residual risk factors. The following hazards may
arise in connection with the tool’s construction and design:
• Damage to the lungs if an effective dust mask is not worn.
• Damage to hearing if effective ear defenders are not worn.
Wear goggles
Assembly
The Drill is packed, fully assembled.
Wear earmuffs
Wear a breathing mask
6
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7. Selector button
Know your product
1. On/Off trigger switch
2. Lock on button
8. Variable speed dial
9. Auxiliary handle
10. Adjustable depth gauge
11. Locking sleeve
3. Soft grip handle
4. Forward/Reverse lever switch
5. SDS Chuck
12. SDS Chuck adaptor
13. Chuck key
10
6
7
6. 4-Function selector
14. 13mm Keyed chuck
5
11
4
1
2
8
9
3
12
13
14
7
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Auxiliary handle and depth gauge
Installing and removing bits
1. Turn the auxiliary handle (9) anti-clockwise to loosen the
collar and slip it over the chuck onto the drill (Fig. A).
CAUTION. Always ensure that the drill is switched off and
plug is removed from the power socket before installing or
removing drill bits.
The drill features an SDS-Plus® system which enables easy
and safe bit replacement.
2. Insert the depth gauge (10) in the hole at the top of the
handle (9) (Fig. B).
B
Before inserting an SDS-Plus® bit always ensure that the bit
end is clean and greased.
A
1. Pull back the locking sleeve (11) and insert the bit into the
chuck opening taking care that the splines on the shaft of
the bit locate properly within the chuck (Fig. E).
2. Test for proper location by releasing the locking sleeve
(11) and giving the bit a sharp pull. If the bit can be
removed, again pull back the locking sleeve, rotate the bit
a fraction of a turn and re-insert it into the chuck (Fig. F).
3. The auxiliary handle (9) can be swivelled around 360°
to find the position that offers most comfort and the
easiest operation.
F
E
4. The depth gauge (10) helps keep an accurate depth
when drilling holes to a set depth.
5. To change the position of the depth gauge (10), turn the grip
of the handle (9) anti-clockwise until the depth gauge is loose
enough to slide in the hole.
6. Set the depth, checking the depth with a steel rule for
most accurate measurement (Fig. C).
3. Release the locking sleeve
and again test for proper
location. Repeat if necessary
until you are sure that the bit is
properly secured.
7. Then turn the handle grip clockwise to tighten both
the depth stop and the auxiliary handle in the required
position (Fig. D).
G
D
C
4. To remove the bit, pull back
the locking sleeve (11),
remove the bit, and release
the locking sleeve (Fig. G).
Note. Hammer action drilling is only possible with the drill
set for forward rotation.
8
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4. To select reverse, push the forward/reverse lever switch
(4) to the right side of the tool (Fig. L).
Operation
Starting and stopping
1. Plug the cordset into the
mains socket.
5. When the switch (4) is left in middle position, it locks the
motor (Fig. M).
H
2. Depress the on/off trigger
switch (1) to start the drill and
release the trigger when you
wish to stop (Fig. H).
L
M
Variable speed
1. The speed of the drill can be adjusted using the variable
speed dial (8).
2. To increase the speed, turn the dial clockwise (Fig. I).
3. To decrease the speed, turn the dial anti-clockwise (Fig. J).
WARNING. When changing the position of the switch (4) be
sure the trigger is released and the motor is stationary. Any
attempt to reverse the direction of rotation whilst the drill is
turning is likely to permanently damage the switch.
I
J
Note. The first time the tool is run after changing the
direction of rotation, you may hear a click on start up. This is
normal and does not indicate a problem.
Lock on button
1. The lock on button (2) maintains the speed of the motor
without having to hold the trigger switch (1) depressed.
2. If you require continuous operation, press the lock-on
button (2) whilst the trigger switch is depressed (Fig. N).
4. Selecting the speed enables the user to have greater control
of the tool and allows drilling in a variety of materials.
3. To disengage the lock-on button, press the trigger switch
(Fig. 0).
Note. The speed can be changed while the drill is running.
Forward/reverse
1. The forward/reverse lever switch (4) is located
immediately above the trigger switch (1).
N
O
2. It determines the direction of
rotation of the tool and serves
as a lock off control.
K
3. To select forward rotation,
release the trigger switch and
push the forward/reverse lever
switch to the left side of the tool
(Fig. K).
9
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Selecting the required function
Hints for use
It is possible to use the rotary
hammer drill in four different
modes of operation:
Note. When drilling into masonry, the drilling rate is fast
and burnout of the tip will occur if the drill bit is not
constantly cleared.
P
Q
R
S
1. Rotation only
• Use only correctly sharpened
drill bits, which are suitable for
the material being drilled.
T
Non hammer action, non pneumatic
For drilling into metal and wood
products, can be used with the
13mm keyed chuck (Fig. P).
• To drill hard materials, firm
pressure is required on
the power tool. However,
excessive pressure does not
improve performance and
places unnecessary pressure
on the tool and its bit.
2. Rotary hammer action
Pneumatic
For drilling into brick
and masonry products (Fig. Q).
CAN NOT be used with the
13mm keyed chuck.
• When driving screws, always use a pilot hole and set the
speed dial to low. Press firmly on the screw head and pull
the trigger gradually increasing the speed. It is always
wiser to test the screw driving on a scrap piece of the
same material you are using.
Use SDS drill bits only.
3. Chisel rotation mode
Allows the operator to rotate a flat
chisel to the most suitable angle
for the task (Fig. R).
CAN NOT be used with
the 13mm keyed chuck.
• Larger diameter holes in hard wood, steel and concrete
have to be drilled at slower speeds. However, the motor
must not be struggling with the operation. If the motor is
struggling DO NOT continue working, pull the drill clear of
the work piece and run it on fast speed for a minute or so
allowing the motor time to cool down before you attempt
a little more of the work. If the job is too hard for the drill,
do not continue, otherwise permanent damage to the
motor will occur.
4. Non rotating, pneumatic
hammer action
For light demolition work or
chiselling such as lifting tiles (Fig. S).
CAN NOT used with the 13mm
keyed chuck.
• Wire brushing or sanding should be carried out on the
highest speed.
• Concrete drilling should be carried out on the highest
speed. DO NOT overload motor when drilling concrete.
DO NOT use too much pressure as the hammer action
relies on the drill bit being able to move back and forward
in the hole being drilled. Always clear the flutes of the drill
bit by removing it from the hole regularly.
1. To select the required mode of
operation, press the selector
button (7) and set selector knob
(6) to the appropriate position.
2. Release the button (7).
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Fitting the keyed chuck
Maintenance
The keyed chuck (14) supplied as an accessory can be
fitted to the SDS chuck with the use of the SDS chuck
adaptor (12).
WARNING. Always ensure that the tool is switched off and
the plug is removed from the power socket before making
any adjustments or maintenance procedures.
1. The keyed chuck allows bits with a straight shank to be
used with the tool.
Store the tool, instruction manual and accessories in a
secure place. In this way you will always have all the
information and parts ready to hand.
2. Grip and pull back the locking sleeve (11) and insert the
SDS chuck adaptor (12) (Fig. U).
Keep your machine and its cord clean. The outside of the
machine can be cleaned using a damp soft cloth with a mild
detergent if required.
3. It may be necessary to turn the SDS chuck adaptor in
order for it to locate properly (Fig. V).
Some maintenance products and solvents may damage the
plastic parts; these include products containing benzene, 25
trichloroethylene, chloride and ammonia.
U
V
CAUTION. Water must never come into contact with the tool.
Excessive sparking generally indicates the presence of dirt
in the motor or abnormal wear on the carbon brushes.
Take special care to keep the ventilation inlets/outlets free
from obstruction; cleaning with a soft brush followed by
a compressed air jet will usually be sufficient to ensure
acceptable internal cleanliness.
4. Release the locking sleeve (11) to lock the adaptor in
place (Fig. W).
Wear eye protection when carrying out cleaning.
5. Screw the keyed chuck (14) onto the threaded end of the
SDS chuck adaptor (12) (Fig. X).
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.
W
X
Regularly check that all the fixing screws are tight. They
may vibrate loose over time.
Regularly check to see if any dust or foreign matter has
entered the grills near the motor and around the trigger
switch. Use a soft brush to remove any accumulated dust.
Wear safety glasses to protect your eyes whilst cleaning.
Re-lubricate all moving parts at regular intervals.
WARNING. The keyed chuck (14) is only to be
used in the
It must NOT BE USED when an SDS mode
is selected or
mode of operation.
,
.
11
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GMC customer assist
If your product needs repairing, replacing,
technical service 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
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 or replacement 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,
contact phone numbers, email address
Product details: Product number, date of purchase, retailer bought from,
State & postcode, receipt number, reason for the request,
copy of official purchase receipt
Attach your purchase receipt and save with this Manual for future reference.
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