Global Machinery Company Drill 3G12V User Manual

CORDLESS  
3 GEAR  
HAMMER D
3G12V, 3G144V, 3G18V, 3G1
INSTRUCTION MANUAL  
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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.  
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.  
3
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Specifications  
3G12V  
3G144V  
3G18V/3G18VM 3G24V/3G24VM  
230 – 240 Vac, 50Hz  
45W 14Vdc, 2A  
230 – 240 Vac, 50Hz 230 – 240 Vac, 50Hz  
230 – 240 Vac, 50Hz  
85W 28Vdc, 2.3A  
Charger  
50W 17Vdc, 2A  
65W 21Vdc, 2.1A  
1 Hour  
1 Hour  
1 Hour  
1 Hour  
Charging time  
Batteries  
2 x 1.5Ah  
2 x 1.5Ah  
2 x 1.7Ah  
2 x 1.7Ah  
Nominal battery  
voltage  
12V  
14.4V  
18V  
24V  
Three speed  
Variable speed  
20 positions  
Three speed  
Variable speed  
20 positions  
Three speed  
Variable speed  
20 positions  
Three speed  
Variable speed  
20 positions  
Gear  
Switch  
Torque settings  
Drill chuck  
capacity  
10mm Keyless  
10mm Keyless  
13mm Keyless  
13mm Keyless  
2.4kg  
2.5kg  
2.9kg  
3.2kg  
Weight  
17.65 Nm  
20.6 Nm  
36.3 Nm  
45.15 Nm  
Maximum torque  
Maximum drill no-load speed  
0–330min-1  
0–385min-1  
0–670min-1  
0–1500min-1  
0–385min-1  
0–670min-1  
0–1500min-1  
0–400min-1  
0–700min-1  
0–1600min-1  
Low  
0–570min-1  
Medium  
High  
0–1300min-1  
Hammer impact frequency  
0–4950 BPM  
0–5775 BPM  
0–10050 BPM  
0–22500 BPM  
0–5775 BPM  
0–10050 BPM  
0–22500 BPM  
0–6000 BPM  
0–10500 BPM  
0–24000 BPM  
Low  
0–8550 BPM  
0–19500 BPM  
Medium  
High  
Maximum drilling capacity  
10mm  
25mm  
10mm  
10mm  
28mm  
10mm  
13mm  
38mm  
13mm  
13mm  
38mm  
13mm  
Steel  
Wood  
Concrete  
4
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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.  
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.  
Save these instructions  
1. Work area  
a. Keep work area clean and well lit. Cluttered and dark  
areas invite accidents.  
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.  
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.  
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.  
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.  
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.  
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.  
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.  
5
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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.  
make a connection from one terminal to another.  
Shorting the battery terminals together may cause burns  
or a fire.  
e. Under abusive conditions, liquid may be ejected  
from the battery; avoid contact. If contact accidentally  
occurs, flush with water. If liquid contacts eyes,  
additionally seek medical help. Liquid ejected from the  
battery may cause irritation or burns.  
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.  
6. 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 instructions for drills  
Wear ear protectors with impact drills.  
Exposure to noise can cause hearing loss.  
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.  
Use auxiliary handles supplied with the tool.  
Loss of control can cause personal injury.  
If possible, always use clamps or a vice to hold your work.  
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.  
Always switch off before you put the drill down.  
Ensure that the lighting is adequate.  
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.  
5. Battery tool use and care  
a. Ensure the switch is in the off position before  
inserting battery pack. Inserting the battery pack into  
power tools that have the switch on invites accidents.  
Keep the area free of tripping hazards.  
Do not let anyone under 18 years operate this tool.  
Only use accessory bits in good condition.  
b. Recharge only with the charger specified by the  
manufacturer. A charger that is suitable for one type  
of battery pack may create a risk of fire when used with  
another battery pack.  
Before drilling, check that there is sufficient clearance for  
the drill bit under the workpiece.  
Do not touch the bit after operation. It will be very hot.  
Keep your hands away from under the workpiece.  
c. Use power tools only with specifically designated  
battery packs. Use of any other battery packs may  
create a risk of injury and fire.  
Never use your hands to remove sawdust, chips or waste  
close by the bit.  
d. When battery pack is not in use, keep it away from  
other metal objects like paper clips, coins, keys,  
nails, screws, or other small metal objects that can  
Rags, cloths, cord, string and the like should never be left  
around the work area.  
6
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Support the work properly.  
Additional safety instructions for the charger  
Before using the charger, read all the instructions and  
cautionary markings on the charger and battery pack as  
well as the instructions on using the battery pack.  
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.  
Only charge your batteries indoors as the charger is  
designed for indoor use only.  
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.  
DANGER. If the battery pack is cracked or damaged in  
any other way, do not insert it in the charger. There is a  
danger of electric shock or electrocution.  
WARNING. Do not allow any liquid to come into contact  
with the charger. There is a danger of electric shock.  
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.  
To allow the battery pack to cool down after charging, do  
not place it in a hot environment such as a metal shed or  
open trailer left in the sun.  
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.  
The charger is not intended for any use other than  
charging the exact type of rechargeable battery pack as  
supplied with the charger. Any other use may result in the  
risk of fire, electric shock or electrocution.  
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.  
The charger and battery packs supplied with it are  
specifically designed to work together. Do not attempt to  
charge the battery pack with any other charger than the  
one supplied.  
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.  
Do not place any object on top of the charger as it could  
cause overheating. Do not place the charger near any  
heat source.  
Do not pull on the lead of the charger to disconnect it  
from the power source.  
Make sure that the charger cable is positioned where  
it will not be stepped on, tripped over or otherwise  
subjected to damage or stress.  
The manufacturer shall not be liable for any changes  
made to the tool nor for any damage resulting from  
such changes.  
Do not use an extension cord unless it is absolutely  
necessary. The use of an improper extension cord could  
cause the risk of fire, electric shock or electrocution.  
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:  
Do not use the charger if it has been subjected to a  
heavy knock, dropped or otherwise damaged in any way.  
Take the charger to an authorised service centre for a  
check or repair.  
Damage to the lungs if an effective dust mask is not worn.  
Damage to hearing if effective ear defenders are not worn  
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Do not disassemble the charger. Take it to an authorised  
service centre when service or repair is required.  
Incorrect re-assembly may result in the risk of fire, electric  
shock or electrocution.  
The battery pack utilizes nickel-cadmium cells.  
Cadmium is considered to be a toxic material. Use an  
environmentally safe disposal unit at a municipal  
waste disposal centre to dispose of a damaged or worn  
out battery.  
To reduce the risk of an electric shock, unplug the  
charger from the power supply before attempting to clean  
it. Removing the battery alone does not reduce the risk.  
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.  
Never attempt to connect two chargers together.  
Do not store or use the tool and battery pack in  
locations where the temperature may reach or exceed  
104°F (40°C) such as alongside sheds or metal  
structures in the summer.  
The charger is designed for use from a standard house-  
hold electrical supply (230–240 volts). Do not attempt to  
connect the charger to a supply with a different supply.  
If you wish to charge a second battery pack, unplug the  
charger from the mains supply and leave it for at least  
15 minutes. After this time you can charge a second  
battery pack.  
Additional safety instructions  
for the battery pack  
The battery pack for this tool has been shipped in a low  
charge condition. You should charge the battery pack  
fully before use.  
To ensure the longest battery life and best battery  
performance, always charge the battery when the air  
temperature is between 18–24°C. Do not charge the  
battery pack when the temperature is below 0°C, or above  
40°C. This is important. Failure to observe this safety rule  
could cause serious damage to the battery pack.  
Do not incinerate the battery pack even if it is seriously  
damaged or can no longer hold a charge. The battery  
pack can explode in a fire.  
Never attempt to open the battery pack for any reason.  
If the plastic housing of the battery pack breaks open  
or cracks, immediately discontinue its use and do not  
recharge it.  
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Know your product  
This drill can be used for drilling in wood, metal, masonry  
and screwdriving. Use the tool and accessories only for  
intended applications. All other applications are expressly  
ruled out.  
2
9
11  
1. Single sleeve keyless chuck  
2. Torque adjustment/  
hammer selection collar  
3. Trigger with variable  
speed control  
4
5
4. Forward/reverse control  
(not shown)  
5. Adjustable side handle  
6. Battery pack release buttons  
7. Rechargeable battery pack  
8. Charger  
1
3
8
9. 3 Speed gear selector  
10. Screw Driver bit storage  
11. Spirit level  
12. Battery indicator button  
13. LED Light switch  
14. LED lights (x5)  
10  
6
13  
14  
12  
7
9
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Adjustable side handle  
Fitting and removing the battery pack  
The drill is supplied with a 360º adjustable side handle (5).  
Always fit and use the side handle when using the drill, this  
increases safety when operating the drill.  
To remove the battery pack from the drill firmly press the  
battery release buttons (6) at either side of the battery pack,  
and slide the battery backward out of the tool.  
To adjust the side handle, rotate the side handle in an anti  
clockwise direction approximately 2 full turns. Once the side  
handle is loose rotate the collar left or right to the desired  
position. You do not need to fully remove the handle.  
To install the battery pack, align  
rails, on the tool with the tabs  
on the battery pack and slide  
the battery pack on to the drill.  
Ensure the battery pack is sitting  
straight on the foot and correctly  
entering the runners. The battery  
should slide fully on to the drill  
foot until the battery pack “clicks”  
into position.  
If you want to remove the side handle, slide the collar  
completely forward over the chuck.  
To tighten the collar on the housing, rotate the handle in a  
clockwise direction firmly.  
Ensure the collar is fully located on the aluminium housing.  
Inserting and removing bits  
The drill is fitted with auto spindle lock which means if  
you try and rotate the chuck by hand the spindle of the  
drill will automatically lock. This means you only need to  
grasp the chuck and rotate the chuck housing to remove  
or fit accessories.  
This drill has a keyless chuck, hence a chuck key is not  
needed to secure a bit in the drill. Always set the forward/  
reverse control (4) to the locked ‘OFF’ position when  
installing and removing bits. It is also recommended to  
remove the battery pack to avoid unintentional starting.  
1. Open the chuck jaws by firmly holding the chuck housing  
and rotating the housing in an anti clockwise direction.  
Open the jaws sufficiently so as to fit the desired  
accessory.  
2. Ensure the accessory is fully inserted.  
3. To firmly clamp the accessory in the chuck, grasp  
the chuck housing and rotate the chuck housing in a  
clockwise direction. Ensure the bit is retained firmly or  
damage to the chuck jaws can result.  
4. To remove the accessory, open the chuck jaws by firmly  
holding the chuck housing and rotating the housing in an  
anti clockwise direction. Open the jaws sufficiently so as  
to remove the specific accessory.  
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To remove the battery pack from the charger depress  
the battery pack release buttons (6).  
Battery charging  
c
b
Depending on room temperature, line voltage, and existing  
charge level, initial battery charging may take longer than  
one hour.  
Disconnect charger from power source when not in use.  
To obtain the best life for the battery  
a
Never allow the drill to come to a complete stand still  
before recharging. The battery should be placed on charge  
whenever the battery is noticeably running down or the drill  
no longer performs a task it previously performed.  
d
e
Avoid conducting short charges. Make sure that the  
battery is fully charged every time by allowing the charger  
to complete its full charging cycle.  
Avoid allowing lose items like screws or nails etc to be  
stored with battery packs as these or similar items can  
short battery packs and cause a fire or explosion.  
Always unplug the charger when not in use and store in  
a dry secure place.  
Make sure power circuit voltage is the same as that  
shown on the charger specification plate. Connect  
charger to power source. The yellow light (a), should light  
up. This indicates the charger is ready to begin charging.  
Avoid charging or storing your battery in temperatures  
below 0ºC and above 40ºC.  
Position battery pack on charger; align rails (d), on battery  
charger with (e) on battery pack. Slide battery forward onto  
charger until it clicks into position.  
Battery indicator  
Press the battery indicator button (12), this will display the  
level of charge remaining in the  
battery. The LED’s lighting up  
indicate the charge remaining  
in the battery, the higher the  
number of LED’s the more  
charge remaining in the battery.  
When the battery indicator  
The red light (b), should begin to glow continuously,  
indicating that the battery pack is receiving a “Fast Charge”.  
Note. If the red light does not glow continuously, but the  
yellow light is flashing and the green light (c), begins  
to glow, remove battery and re-insert when battery  
temperature is between 0°C and 40°C.  
is showing only one LED the  
battery should be removed and  
put on the charger.  
After approximately one hour, the “Fast Charge” indicator  
red light (b) should go out indicating that the battery pack is  
fully charged and that the charger is now in a “Maintenance  
Charge” mode, this is confirmed by the green light (c)  
coming on. The battery pack can be left on “Maintenance  
Charge” until you are ready to use it.  
11  
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The reverse mode is intended for the removal of screws.  
LED Work area light  
The drill has five LED lights (14) to illuminate the work  
area and improve vision when drilling in areas with  
insufficient light.  
The centre position of the control button locks the tool in the  
off position.  
Variable speed  
The variable speed feature is particularly useful when  
driving screws.  
To turn the LED lights on depress the LED light switch (13).  
To turn the LED lights off repress the LED light switch (13).  
It also enables you to select the best speed for a particular  
application. The farther you squeeze the trigger, the faster  
the tool will operate.  
Trigger Switch  
To start the drill, depress  
the trigger switch.  
Use lower speeds for starting holes without a centre  
punch, drilling metals or plastic, driving screws and drilling  
ceramics, or in any application requiring high torque. Higher  
speeds are better drilling in wood, wood compositions and  
for using abrasive and polishing accessories. For maximum  
tool life, use variable speed only for starting holes or  
fasteners.  
Use the forward/reverse  
control (4) to select the  
direction of rotation, then  
squeeze the trigger switch  
(3). This trigger switch  
is an electronic variable  
speed control which enables the user to vary the speed  
continuously. The speed varies according to how far the  
trigger switch is depressed, the further it is depressed the  
faster the chuck will rotate and the lighter it is depressed,  
the slower it will rotate. The switch is equipped with a  
brake, the chuck will stop as soon as the trigger switch is  
fully released.  
Note. It is best to use the variable speed feature for a short  
time only. Do not continuously operate the drill in variable  
speed mode this may damage the switch.  
Drilling Positions  
This symbol indicates the DRILL POSITION. Use this  
mode for high speed drilling (Wood, Aluminium, and  
Steel) and the clutch will be locked.  
To stop the drill, release the trigger switch.  
Forward/Reverse control  
This symbol indicates the HAMMER POSITION. Use  
this mode to select hammer action. For best results  
in hammer mode, use set the gear selector (9) to  
Position 3 (high speed).  
The forward/reverse control  
(4) allows you to change the  
direction of the tool while the  
variable speed trigger is not  
depressed.  
To select forward rotation  
depress the control (4) toward  
the left side of the tool. To  
select reverse depress the  
control (4) to the right side of  
the tool.  
Drilling uses the forward mode.  
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Torque adjustment/hammer selection collar  
Screw driver bit storage  
By rotating the torque adjustment/hammer selection collar  
(2) behind the chuck, it is possible to adjust the torque to  
each of twenty settings, or select hammer action or the  
drill setting.  
A convenient storage area (10) with retaining clip, for  
screwdriver bits is provided on the left side of the tool.  
Chuck replacement  
Chuck removal  
Always wear eye protection.  
The range of twenty torque settings allows better control  
when using the drill as a screwdriver as it prevents over-  
tightening of the screws.  
Turn the torque adjustment collar (2) to the “drill” position  
and first gear, on the gear shift (9). Tighten the chuck  
around the shorter end of a hex key (not supplied) of 5mm  
or greater size. Using a wooden mallet or similar object,  
strike the longer end in the clockwise direction. This will  
loosen the screw inside the chuck.  
The numbers circling the collar are used to indicate the  
level of torque. The higher number on the collar, the  
higher torque and the larger the fastener which can be  
driven. To select any of the numbers, rotate the collar  
(2) until the desired number aligns with the arrow head  
indicator on the housing.  
1. Open chuck jaws fully.  
2. Insert a 5mm hex key into front of chuck between jaws to  
engage screw head. Remove screw by turning clockwise.  
3 Speed gearbox  
The 3 Speed Gearbox allows  
you to select a gear with the  
optimum speed and torque to  
suit the application.  
3. Place the hex key in chuck and  
tighten. Using a wooden mallet or  
similar object, strike key sharply  
in the anti-clockwise direction.  
This will loosen the chuck so that  
it can be unscrewed by hand.  
To select the first gear (low  
speed, high torque setting), turn  
the tool off and wait until it stops.  
Push the gear selector (9) back,  
away from the chuck, so the number 1 is displayed.  
Chuck installation  
1. Screw the chuck on  
by hand as far as  
it will go and insert  
screw (LH thread).  
To select the second gear (medium speed, medium torque  
setting), turn the tool off and wait till it stops. Slide the  
gear selector forward towards the chuck, so the number 2  
is displayed.  
2. Tighten the chuck  
around the shorter  
end of hex key (not  
supplied) strike the  
longer end in the  
To select the third gear (high speed, low torque setting),  
turn the tool off and wait until it stops. Slide the gear  
selector (9) to the middle position, so the number 3  
is displayed.  
clockwise direction with  
a wooden mallet.  
Note. Do not change gears when the tool is running.  
3. Remove the hex key and open the jaws fully. Tighten the  
screw in the centre of the chuck firmly, with the hex key in  
an anti-clockwise direction.  
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Drilling metals  
For maximum performance, use high speed steel bits for  
metal or steel drilling.  
Drilling wood  
For maximum performance, use high speed steel bits for  
wood drilling.  
Ensure that the torque adjustment / hammer selection  
collar (2) is in normal drilling mode.  
Ensure that the mode selector is in normal drilling mode.  
Begin drilling at a very low speed to prevent the bit from  
slipping off the starting point. Increase the speed as the  
drill bites into the material.  
Begin drilling at a very low speed to prevent the bit from  
slipping off the starting point.  
Always clamp sheet metal.  
When drilling through holes, place a block of wood behind  
the work piece to prevent ragged or splintered edges on  
the back side of the hole.  
Support thin metal with a block of wood to avoid  
distorting it.  
WARNING. Never attempt to lock the trigger switch in the  
on position, do not lock the trigger on jobs where your  
hammer drill may need to be stopped suddenly.  
Use a punch to mark the centre of the hole.  
Use a suitable lubricant for the material you are  
working on.  
Use:  
Oil  
for:  
Steel  
All drilling operations  
Mark off the centre of the hole using a centre punch  
or nail.  
Turpentine or paraffin  
Do not lubricate  
Aluminium  
Brass, copper or cast iron  
Drilling plastics and plastic coated chipboard  
Use high speed drill bits  
See drilling wood below  
Drilling masonry  
For maximum performance use carbide-tipped masonry  
impact bits when drilling holes in brick, tile, concrete etc.  
Turn the mode selector to hammer mode, then rotate the  
torque collar to the drill position.  
Apply light pressure and medium speed for best results  
in brick.  
Apply additional pressure and high speed for hard  
materials such as concrete.  
When drilling holes in tile, practice on a scrap piece to  
determine the best speed and pressure.  
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Care  
Don’t force the drill, let it work at its own pace  
Keep the drill bit sharp.  
Reduce pressure, as the drill is about to break through  
the item being drilled.  
Maintenance  
Store the tools, instruction manual and where necessary  
the accessories in the original packaging. In this way  
you will always have all the information and parts ready  
to hand.  
Do not throw used batteries into fire or water. There  
is a danger of explosion! Please hand in non-working  
or used batteries, or tools with built-in batteries, to the  
environmentally-safe disposal unit at a municipal waste-  
disposal centre, or to your dealer.  
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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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  
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 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.  
Please refer to our website www.gmcompany.com for full GMC warranty Terms and Conditions.  
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