Atlas Copco G2427 S180 Instruction sheet

G2427 S180
Printed Matter No. 9836 9907 00 Die grinder
Valid from Serial No. A5700001
2014-05-01 Product Instructions
G2427-S180 ( 18000 r/min) 8423031287
WARNING
Read all safety warnings and instructions
Failure to follow the safety warnings and in-
structions may result in electric shock, fire and/
or serious injury.
Save all warnings and instructions for future
reference

2© Atlas Copco Industrial Technique AB - 9836990700
Table of Contents
EN Product Instructions.......................................................................... 3

G2427 S180 EN Safety and operating instructions
© Atlas Copco Industrial Technique AB - 9836 990700 00 3
Safety and operating instructions
General information
Design and function
This die grinder is intended for mounted wheels and rotary burrs only. This
model is lubricated. The machine, its attachments and accessories must only be
used for the purpose for which they were designated, all other use is prohibited.
• Never use grinding wheels attached with an adapter as this machine is not
fitted with a wheel guard
• Never attach circular saw blades or other cutters than the abrasive wheels or
brushes specified for the tool
Signs and stickers
The product is fitted with signs and stickers containing important information
about personal safety and product maintenance. The signs and stickers shall al-
ways be easy to read. New signs and stickers can be ordered by using the spare
parts list.
Installation
Installation
• Fit the support handle in suitable position for right- or left hand operation
respectively.
• Always make sure that you have the correct guard for the grinding equip-
ment.
• Attach the grinding equipment.
Adjust the guard for best operator protection.
• Connect the machine to the air line.
Blow out the hose before connecting.
The motor requires no additional lubrication during operation.
• The throttle valve lever may only be activated after pushing the lever catch
release arm forwards.
Check regularly that the catch and the release arm moves easily.
Installation of vibrating tools
It is recommended that a minimum length of 300 mm of flexible hose for com-
pressed air is inserted between a vibrating tool and the quick-action coupling.
Air quality
• For optimum performance and maximum product life we recommend the
use of compressed air with a dew point between +2°C and +10°C. Installa-
tion of an Atlas Copco refrigeration-type air dryer is recommended.

Safety and operating instructions EN G2427 S180
4© Atlas Copco Industrial Technique AB - 9836 990700 00
• Use a separate air filter of type Atlas Copco FIL, removes solid particles
larger than 15 microns and more than 90 % of liquid water, installed as
close as possible to the product and prior to any other air preparation unit
like REG or DIM (please see Air Line Accessories in our main catalogue).
Blow out the hose before connecting.
Lubricated models:
• The compressed air must contain a small quantity of oil. We strongly rec-
ommend that you install an Atlas Copco oil-fog lubricator DIM, to be set
normally at 3–4 drops (50mm3)/min for long cycle running tools, or an At-
las Copco single-point lubricator type Dosol for short cycle running tools.
For Dosol setting please see Air Line Accessories in our main catalogue.
Compressed air connection
WARNING Air under pressure can cause serious injury
►Always shut off air supply, drain hose of air pressure and disconnect tool
from air supply when not in use, before making any adjustments to the
product, e.g. changing accessories, or when making repairs.
►Never direct air at yourself or anyone else.
WARNING Whipping hoses can cause serious injury
►Always check for damaged or loose hoses and fittings.
Check air pressure:
• The product is designed for a working pressure (e) of 6–7 bar = 600–700
kPa = 87–102 psig.
• The air pressure at the tool inlet with the product running must not exceed
the maximum operating pressure 7 bar – 700 kPa – 102 psig.
• Blow out the hose before connecting it.
Installation proposal
To save time and to ensure correct capacity of the airline installation, from the
tapping point to the tool, we offer you an installation proposal.
Do not use quick disconnect couplings at tool.
Whenever universal twist couplings are used, lock pins must be installed.
For more information please read, Atlas Copco Industrial Power Tools cata-
logue Ordering No. 9837300001.
Operation
See also Service instructions

G2427 S180 EN Safety and operating instructions
© Atlas Copco Industrial Technique AB - 9836 990700 00 5
Preparations before using the die grinder
Correct function of die grinder
WARNING Overspeed can result in serious injury or death
►The maximum permissible speed as marked on the machine must not be
exceeded
Testing of the die grinder should only be carried out by professional techni-
cians. The technicians must be authorized to test this type of tool and to operate
a pneumatic system in accordance with national directives.
• The free speed of the machine shall be checked every day and whenever the
machine has been serviced. This check should be carried out with the grind-
ing equipment detached
• Use a pressure regulator to avoid excessive air pressure which may cause
overspeed
• Connections and air hose must be in good condition
Mounted wheel and carbide burr
WARNING Air under pressure can cause serious injury
►Always shut off air supply, drain hose of air pressure and disconnect tool
from air supply when not in use, before making any adjustments to the
machine, e.g. changing accessories, or when making repairs
WARNING Wrong insert tool can burst and cause serious injury or
death
►Use insert tool with max operating speed higher or equal to the airgrinder
speed
►Do not use other insert tool than specified by the manufacturer (no cut-
ting off wheels or router bits).
• Use only recommended sizes and types of abrasives
• Do not use mounting wheels that are chipped or cracked, or may have been
dropped
• Correct mounting is necessary to prevent injury from broken mounted
wheels
• Ensure the shaft diameter of the accessory is correct for the size of collet
• Do not mix mm shanks with inch collets and vice versa
• Observe a min of 10 mm axial grip of the shank

Safety and operating instructions EN G2427 S180
6© Atlas Copco Industrial Technique AB - 9836 990700 00
• When fitting mounted wheels or burrs, reduce the overhang by pushing the
shank all the way into the collet (Check also the recommendations given by
the tool manufacturer)
• Observe that increased overhang of shank reduces permissible speed
• Before starting the machine, check that the collet is properly tightened
• Test run every new mounted wheel in a safe position for 30 seconds. Be
sure to use a barrier (such as under a heavy work table) to stop any possible
broken wheel parts. Stop immediately if vibration is excessive
Correct working with the die grinder
Read the Section Safety instructions before using the die grinder.

G2427 S180 EN Safety and operating instructions
© Atlas Copco Industrial Technique AB - 9836 990700 00 7
WARNING Failure to follow correct working practices can result in se-
rious injury or death
►Ensure that the workpiece is properly supported
►Ensure that sparks do not cause a hazard to people or materials
►There is a risk of electrostatic discharge if the tool is used on plastic and
other non-conductive materials
►Personal protective equipment must be used as described in Section Per-
sonal protective equipment
►Slip/Trip/Fall is a major cause of serious injury or death. Watch out for
excess hose left on the walking or work surface
►Proceed with care in unfamiliar surroundings. Hidden hazards may exist,
such as electric or other utility lines
►Maintain a balanced body position and firm footing
►React quickly to excessive vibration due to damaged, or improperly
mounted insert tool
►Keep away from rotating drive spindle and abrasives. Rotation may con-
tinue for several seconds after the throttle has been released. Do not lay
the tool down until rotation has stopped
►Observe that stored compressed air in the hose may cause an accidental
start
►Release control device if the energy supply should fail
Maintenance
Rust protection and internal cleaning
Water in the compressed air, dust and wear particles cause rust and sticking of
vanes, valves etc.
This can be solved by lubricating with oil (a few drops), running the machine
for 5-10 seconds and wiping off excess oil with a cloth. Do this before longer
standstills.
Lubrication
The front motor ball bearing should be lubricated with grease in conjuction with
the regular overhaul of the machine.
For flexible spindle extension – When fitting the extended spindle – apply 0.5
cm3 of grease type “Lubricating Engineers LE3752” (or EP grease) at the bot-
tom of the hole in the collet holder.
Lubricating guide
Use lubricants of good quality. The oils and greases listed in the lubrication ta-
ble are examples of lubricants that can be recommended.
Brand
General purpose
Bearings Air lubrication
BP Energrease LS-EP2 Energol E46
Castrol Spheerol EP L2

Safety and operating instructions EN G2427 S180
8© Atlas Copco Industrial Technique AB - 9836 990700 00
Brand
General purpose
Bearings Air lubrication
Esso Beacon EP2 Arox EP46
Q8 Rembrandt EP2 Chopin 46
Mobil Mobilegrease XHP 222 Almo oil 525
Shell Alvania EP2 Tonna R32
Texaco Multifak EP2 Aries 32
Molycote BR2 Plus
Overhaul
WARNING Overspeed could result in serious injury or death
►If governor is used, check that correct governor is assembled. Careless
handling may put it out of order
►Do not disassemble security parts, e.g. speed governor or overspeed shut-
off. These parts must be completely replaced when damaged
►Always check the free speed of the machine after service. See Section
Preparation before using the die grinder
The entire machine should be checked regularly at six-month intervals. If it is in
heavy duty service or not running properly it should be taken out of service
more often for inspection.
The strainer at the air inlet should be cleaned frequently to prevent clogging and
decreased capacity.
Useful information
Log in to Atlas Copco www.atlascopco.com
You can find information concerning our products, accessories, spare parts and
published matters on our website.
Ergonomic guidelines
1. Take frequent breaks and change work positions frequently.
2. Adapt the workstation area to your needs and the work task.
• Adjust for convenient reach range by determining where parts or tools
should be located to avoid static load.
• Use workstation equipment such as tables and chairs appropriate for the
work task.
3. Avoid work positions above shoulder level or with static holding during as-
sembly operations.
• When working above shoulder level, reduce the load on the static mus-
cles by reducing the weight of the tool, using for example torque arms,
hose reels or weight balancers. You can also reduce the load on the static
muscles by holding the tool close to the body.
• Make sure to take frequent breaks.
• Avoid extreme arm or wrist postures, particularly for operations requir-
ing a degree of force.

G2427 S180 EN Safety and operating instructions
© Atlas Copco Industrial Technique AB - 9836 990700 00 9
4. Adjust for convenient field of vision by minimizing movement of the eyes
and head during the work task.
5. Use the appropriate lighting for the work task.
6. Select the appropriate tool for the work task.
7. Use ear protection equipment in noisy environments.
8. Use high-quality inserted tools or consumables to minimize exposure to ex-
cessive levels of vibrations.
9. Minimize exposure to reaction forces.
• When cutting:
A cut-off wheel can get stuck if the wheel is either bent or if it is not
guided properly. Make sure to use correct flanges for cut-off wheels and
avoid bending the wheel during cut-off operation.
• When drilling:
The drill might stall when the drill bit breaks through. Makes sure you
use support handles if the stall torque is too high. The safety standard
ISO11148 part 3 recommends to use something to absorb the reaction
torque above 10 Nm for pistol grip tools and 4 Nm for straight tools.
• When using direct driven screw or nutrunners:
Reaction forces depend on tool setting and joint characteristics. The abil-
ity to bear reaction forces depends on the operator’s strength and pos-
ture. Adapt the torque setting to the operator's strength and posture and
use a torque arm or reaction bar if the torque is too high.
10. Use dust extraction system or mouth protection mask in dusty environments.
Country of origin
Please refer to the information on the product label.
Spare parts
Parts without ordering number are not delivered separately for technical rea-
sons.
The use of other than genuine Atlas Copco replacement parts may result in de-
creased tool performance and increased maintenance and may, at the company
option, invalidate all warranties.
Warranty
Contact the Atlas Copco sales representative within your area to claim a prod-
uct. Warranty will only be approved if the product has been installed, operated
and overhauled according to the Operating Instructions.
Please also see the delivery conditions applied by the local Atlas Copco com-
pany.
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Safety and operating instructions EN G2427 S180
10 © Atlas Copco Industrial Technique AB - 9836 990700 00
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