Global Machinery Company Drill HD2G250M User Manual

1050W 2 GEAR  
HAMMER DRILL  
HD2G250M  
INSTRUCTION MANUAL  
Black  
Cyan  
Magenta  
Yellow  
Code: HD2G250M  
Date: 060323  
Edition: 02  
Op: DCR  
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Dear Customer  
Description of symbols  
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  
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.  
0800 445 721 in New Zealand.  
Wear breathing protection.  
Introduction  
Double insulated  
for additional protection.  
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.  
Conforms to relevant standards for  
electromagnetic compatibility.  
You will find your new tool easy and safe to operate,  
and, with proper care, it will give you many years  
of dependable service.  
Specifications  
CAUTION. Carefully read through this entire Instruction  
Manual before using your new GMC Power Tool. Take  
special care to heed the Cautions and Warnings.  
Voltage:  
230–240V ~ 50Hz  
1050W  
Input power:  
-1  
No load speed:  
Number of impacts:  
Chuck size:  
0 - 1100 & 0 - 2800 min  
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.  
0 - 17560 & 0 - 44800 BPM  
13mm  
Maximum drilling capacity:  
Wood:  
Steel:  
Masonry:  
30mm  
13mm  
13mm  
Environmental protection  
Net weight:  
2.7kg  
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.  
Sound pressure level:  
91.7 dB(A)  
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.  
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.  
4
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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.  
Additional safety rules for drills  
Wear ear protectors with impact drills. Exposure to noise  
can cause hearing loss.  
Use auxiliary handles supplied with the tool. Loss of  
control can cause personal injury.  
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.  
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.  
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 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.  
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.  
Keep the area free of tripping hazards.  
Do not let anyone under 18 years operate this tool.  
Only use accessory bits in good condition.  
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.  
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.  
Never use your hands to remove sawdust, chips or waste  
close by the bit.  
5. Service  
Rags, cloths, cord, string and the like should never be left  
around the work area.  
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.  
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.  
When using the drill, use safety equipment including  
safety glasses or shield, ear protectors, and protective  
clothing including safety gloves. Wear a dust mask if the  
drilling operation creates dust.  
5
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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.  
Contents of carton  
Auxiliary handle  
Depth gauge  
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.  
250 Drill and bit accessories  
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.  
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 protectors are  
not worn.  
6
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Know your product  
1. Keyless rubber chuck  
2. Auxiliary handle  
3. Depth gauge  
4. Drilling/hammer mode selector  
5. Lock-on button  
6. Forward/Reverse switch  
7. Variable speed trigger switch  
8. Speed dial  
9
4
9. Spindle lock button  
10. Gear selector  
6
1
3
5
7
8
10  
2
7
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Auxiliary handle and  
Inserting and removing bits  
depth gauge  
CAUTION. Always ensure that the drill is switched off and  
the plug is removed from the power point before making any  
adjustments.  
1. Turn the auxiliary handle (2)  
anti-clockwise to loosen the  
collar and slip it over the chuck  
onto the drill.  
The drill is fitted with a  
comfortable rubber keyless  
chuck for easier tightening and  
more grip torque.  
2. Insert the depth gauge (3)  
in the hole at the top of the  
handle (2).  
1. Open the chuck jaws by  
pressing down the spindle  
lock button (9), firmly holding  
the keyless chuck (1) and  
rotating the housing in an anti-  
clockwise direction.  
3. The auxiliary handle can swivel  
360° for the most comfortable  
position and easiest operation.  
4. The depth gauge helps keep  
an accurate depth when drilling  
holes to a set depth.  
2. Open the jaws sufficiently so  
as to fit the desired accessory.  
Ensure the accessory is  
inserted so the jaws clamp  
securely on the smooth section  
of the drill bit.  
5. To change the position of the  
depth gauge, turn the handle  
grip anti-clockwise until the depth  
gauge is loose enough to slide  
through the hole.  
3. To firmly clamp the accessory  
in the chuck, grasp the chuck  
housing and rotate the chuck  
housing in a clockwise direction  
until you hear the “click”.  
6. Set the depth, checking the  
depth with a steel rule for most  
accurate measurement and then  
turn the handle grip clockwise  
to tighten both the depth stop  
and the auxiliary handle in the  
required position.  
8
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Operation  
Reversing the  
Starting and stopping  
direction of rotation  
The forward/reverse switch  
(6) determines the direction of  
rotation of the tool.  
Operational controls  
1. Ensure that the tool is in  
good condition.  
1. To select forward rotation,  
release the trigger switch  
and push the forward/  
reverse switch to the left  
side of the tool.  
2. Plug the cordset into the  
mains socket.  
3. Depress the trigger switch (7)  
to start the drill and release the  
trigger when you wish to stop.  
2. To select reverse, push the forward/reverse switch to  
the right side of the tool.  
4. Press the lock-on button (5) whilst  
the trigger is depressed if you  
require continuous operation. To  
disengage the lock-on switch,  
press the trigger then release it.  
CAUTION. Any attempt to reverse the direction of rotation  
while the drill is turning is likely to permanently damage  
the switch.  
Drilling/hammer mode selector  
You can use the drill for both hammer action and  
normal drilling.  
1. Use the drilling/hammer  
mode selector (4) to select  
hammer or drill action. The  
type of drilling selected is  
indicated by the symbol on  
each side of the drill.  
Variable speed trigger switch  
1. You can adjust the speed of the drill between zero  
and maximum by varying the pressure on the trigger.  
The harder you press on the trigger the faster the drill  
will operate.  
Speed adjustment  
1. You can change the maximum  
speed setting by turning the  
speed dial (8) located on the  
trigger switch.  
2. Push the selector to for  
hammer action.  
3. Push the selector to for  
drill action.  
CAUTION. Change the mode of action only when the drill  
has come to a complete standstill.  
NOTE. Hammer action drilling should only be preformed in  
the forward direction.  
9
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Gear selector  
Chuck replacement  
The gear selector (10) allows you to shift gears for greater  
versatility of operation.  
Always wear eye protection.  
Chuck removal  
1. To select the low speed, high  
torque setting (Position 1),  
turn the tool off and let the  
motor come to a complete  
standstill. Turn the gear  
The chucks of reversible drills are always fixed by a screw  
with left-hand thread. The screw, which is located in the  
centre of the chuck, must be removed before the chuck can  
be removed.  
1. Tighten the chuck around the shorter end of a hex key  
(not supplied) of 1/4” 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.  
selector to Position “1”.  
2. To select the high speed, low  
torque setting, (Position 2),  
turn the tool off and let the  
motor come to a complete  
standstill. Turn the gear  
2. Open chuck jaws fully.  
selector to Position “2”.  
3. Insert a screwdriver into front of chuck between jaws to  
engage screw head. Remove screw by turning clockwise.  
NOTE. Do not change gears when the drill motor is turning.  
4. Place a hex key in chuck and  
tighten. Using a wooden mallet or  
similar object, strike key sharply  
in the counterclockwise direction.  
This will loosen the chuck so that it  
can be unscrewed by hand.  
If you are having trouble changing gears, make sure that  
the gear selector is either completely in Position 1 or  
completely in Position 2 as you rotate the chuck by hand.  
Chuck installation  
1. Screw the chuck on by hand as far as it will go and insert  
screw (LH thread).  
2. Tighten the chuck  
around the shorter end  
of a 1/4” or large hex  
key (not supplied) strike  
the longer end in the  
clockwise direction with  
a wooden mallet.  
3. Remove the hex key and open the jaws fully. Tighten the  
screw in the centre of the chuck firmly.  
10  
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Hints for use  
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.  
Wood drilling  
For maximum performance, use high speed steel bits for  
wood drilling.  
Move drilling mode selector to drilling mode  
.
Use only correctly sharpened drill bits, which are suitable  
for the material being drilled.  
Secure the workpiece to prevent it from turning when  
drilling.  
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.  
Begin drilling at a very low speed to prevent the bit from  
slipping off the starting point. Increase the speed as the  
drill bit bites into the material.  
When drilling through holes, place a block of wood behind  
the workpiece to prevent ragged or splintered edges on  
the back side of the hole.  
When screw driving 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.  
Do not lock the trigger in the ‘on’ position when the drill  
may need to be stopped suddenly.  
Metal drilling  
For maximum performance, use high speed steel bits for  
metal or steel drilling.  
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 workpiece 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.  
Move drilling mode selector to drilling mode  
.
Use a centre punch to mark the hole location on  
the workpiece.  
Begin drilling at a very low speed to prevent the bit from  
slipping off the starting point.  
Maintain a speed and pressure which allows cutting  
without overheating the bit. Applying too much  
pressure will:  
Wire brushing or sanding should be carried out on the  
highest speed.  
Concrete drilling should be carried out on the highest  
speed.  
- Overheat the drill  
- Wear the bearings  
DO NOT overload motor when drilling concrete.  
- Bend or burn bits  
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.  
- Produce off-centre or irregular shaped holes  
When drilling large holes in metal it is recommended to  
drill with a small bit at first, then finish with a larger bit.  
Also, lubricate the bit with oil to improve drilling action  
and increase bit life.  
Always clear the flutes of the drill bit by removing it from the  
hole regularly.  
11  
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Masonry drilling  
For maximum performance use tungsten carbide-tipped  
masonry impact bits when drilling holes in brick, tile,  
concrete, etc.  
Move drilling mode selector to hammer mode  
.
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 in tile, practice on a scrap piece to  
determine the best speed and pressure.  
Cleaning  
1. 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.  
2. Some maintenance products and solvents may damage  
the plastic parts; these include products containing  
benzene, trichloroethylene, chloride and ammonia.  
3. Excessive sparking generally indicates the presence of  
dirt in the motor or abnormal wear on the carbon brushes.  
4. 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.  
5. Wear eye protection when carrying out cleaning.  
CAUTION. Do not use cleaning agents to clean the plastic  
parts of the drill.  
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.  
12  
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13  
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14  
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15  
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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.  
Helpline 1300 880 001 (Australia) or 0800 445 721 (New Zealand)  
and enter your receipt details.  
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 products.  
Save this Manual for future reference  
GMC Head Office:  
45-55 South Centre Road, Melbourne Airport, Victoria, Australia 3045  
Telephone (03) 8346 1100 Fax (03) 8346 1200  
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