Makita AT450H User manual

GB Narrow Crown Stapler Instruction manual
F Agrafeuse pour agrafes à Manuel d’instructions
dos étroit
D Schmalklammer-Drucklufthefter Betriebsanleitung
I Spillatrice a corona stretta Istruzioni per l’uso
NL Pneumatisch nagelpistool Gebruiksaanwijzing
voor dakdekkers
E Grapadora de corona estrecha Manual de instrucciones
P Agrafador de coroa estreita Manual de instruções
DK Hæftepistol til smalle Brugsanvisning
hæfteklammer
GR Συρραπτικό στενής στεφάνης Οδηγίες χρήσης
AT450H

2
12
34
56
1
23
4
3
4
5
7
6
(times/min)
120
100
80
60
40
20
0
0 20 100806040
L/min
2.26 MPa (22.6 bar)
1.77 MPa (17.7 bar)
1.18 MPa (11.8 bar)

3
78
910
11 12
13 14
8
910
11 12 13
14
15
16
17 3
18
19
20
20 21 19
20

4
15 16
17 18
19 20
21 22
4
3
4
3
4
22
4
22
23
24
25
26
27

5
23 24
25 26
27 28
28
29
30
31
33
32

6
ENGLISH (Original instructions)
Explanation of general view
SPECIFICATIONS
• Due to our continuing program of research and development, the specifications herein are subject to change without
notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
Symbols END106-2
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
............. Read instruction manual.
............. Wear safety glasses.
............. Do not use on scaffoldings, ladders.
Intended use ENE054-1
The tool is intended for pressing staples into construction
materials such as timbers.
IMPORTANT SAFETY
INSTRUCTIONS ENB112-2
WARNING: WHEN USING THIS TOOL, BASIC SAFETY
PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO
REDUCE THE RISK OF PERSONAL INJURY,
INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
• For personal safety and proper operation and
maintenance of the tool, read this instruction manual
before using the tool.
• Always wear safety glasses to protect your eyes from
dust or staple injury.
WARNING:
It is an employer’s responsibility to enforce the use of
safety eye protection equipment by the tool operators
and by other persons in the immediate working area.
• For Australia and New Zealand only
Always wear safety glasses and face shield to protect
your eyes from dust or staple injury. The safety glasses
and the face shield should conform with the
requirements of AS/NZS 1336.
WARNING:
It is an employer’s responsibility to enforce the use of
safety eye protection equipment by the tool operators
and by other persons in the immediate working area.
(Fig. 1)
• Wear hearing protection to protect your ears against
exhaust noise and head protection. Also wear light but
not loose clothing. Sleeves should be buttoned or
rolled up. No necktie should be worn.
• Rushing the job or forcing the tool is dangerous.
Handle the tool carefully. Do not operate when under
the influence of alcohol, drugs or the like.
• General Tool Handling Guidelines:
(1) Always assume that the tool contains fasteners.
(2) Do not point the tool toward yourself or anyone
whether it contains fasteners or not.
(3) Do not activate the tool unless the tool is placed
firmly against the workpiece.
(4) Respect the tool as a working implement.
(5) No horseplay.
(6) Do not hold or carry the tool with a finger on the
trigger.
(7) Do not load the tool with fasteners when any one
of the operating controls is activated.
1. Safety glasses
2. Face shield
3. Contact element
4. Trigger
5. Workpiece
6. Compressor air output per minute
7. Nailing frequency
8. Adjuster
9. Deep
10. Shallow
11. Too deep
12. Flush
13. Too shallow
14. Screw
15. Hook
16. Groove
17. Protrusion
18. Flat nose adapter
19. Staple stopper
20. Pusher base
21. Pusher
22. Change lever
23. Exhaust cover
24. Exhaust vent
25. Hex wrench
26. Front guide
27. Contact top
28. Drain cock
29. Air filter
30. Oiler
31. Pneumatic oil
32. Thinner
33. Stove
Model AT450H
Air pressure 1.28 - 2.26 MPa (12.8 - 22.6 bar)
Applicable staples 25 mm - 50 mm
Staple capacity 84 pcs. (1 strip), max. 105 pcs.
Min. hose diameter 5.0 mm
Dimensions (L X H X W) 261 mm X 115 mm X 269 mm
Net weight 1.5 kg

7
(8) Do not operate the tool with any power source
other than that specified in the tool
operating/safety instructions.
• An improperly functioning tool must not be used.
• Sparks sometimes fly when the tool is used. Do not use
the tool near volatile, flammable materials such as
gasoline, thinner, paint, gas, adhesives, etc.; they will
ignite and explode, causing serious injury.
• The area should be sufficiently illuminated to assure
safe operations. The area should be clear and litter-
free. Be especially careful to maintain good footing and
balance.
• Only those involved in the work should be in the
vicinity. Children especially must be kept away at all
times.
• There may be local regulations concerning noise which
must be complied with by keeping noise levels within
prescribed limits. In certain cases, shutters should be
used to contain noise.
• Do not play with the contact element: it prevents
accidental discharge, so it must be kept on and not
removed. Securing the trigger in the ON position is also
very dangerous. Never attempt to fasten the trigger. Do
not operate a tool if any portion of the tool operating
controls is inoperable, disconnected, altered, or not
working properly.
• Operate the tool within the specified air pressure of
1.28 - 2.26 MPa (12.8 - 22.6 bar) for safety and longer
tool life. Do not exceed the recommended max.
operating pressure of 2.26 MPa (22.6 bar). The tool
should not be connected to a source whose pressure
potentially exceeds 3.39 MPa (33.9 bar).
• Make sure that the pressure supplied by the
compressed air system does not exceed the maximum
allowable pressure of the fastener driving tool. Set the
air pressure initially to the lower value of the
recommended allowable pressure (see
SPECIFICATIONS).
• Never use the tool with other than compressed air. If
bottled gas (carbon dioxide, oxygen, nitrogen,
hydrogen, air, etc.) or combustible gas (hydrogen,
propane, acetylene, etc.) is used as a power source for
this tool, the tool will explode and cause serious injury.
• Always check the tool for its overall condition and loose
screws before operation. Tighten as required.
• Make sure all safety systems are in working order
before operation. The tool must not operate if only the
trigger is pulled or if only the contact arm is pressed
against the wood. It must work only when both actions
are performed. Test for possible faulty operation with
staples unloaded and the pusher in fully pulled position.
• Check walls, ceilings, floors, roofing and the like
carefully to avoid possible electrical shock, gas
leakage, explosions, etc. caused by striking live wires,
conduits or gas pipes.
• Use only staples specified in this manual. The use of
any other staples may cause malfunction of the tool.
• Never use fastener driving tools marked with the
symbol “Do not use on scaffoldings, ladders” for
specific application for example:
- when changing one driving location to another
involves the use of scaffoldings, stairs, ladders, or
ladder alike constructions, e.g. roof laths;
- closing boxes or crates;
- fitting transportation safety systems e.g. on vehicles
and wagons.
• Do not permit those uninstructed to use the tool.
• Make sure no one is nearby before stapling. Never
attempt to staple from both the inside and outside at
the same time. staples may rip through and/or fly off,
presenting a grave danger.
• Watch your footing and maintain your balance with the
tool. Make sure there is no one below when working in
high locations, and secure the air hose to prevent
danger if there is sudden jerking or catching.
• On rooftops and other high locations, staple as you
move forward. It is easy to lose your footing if you
staple while inching backward. When stapleing against
perpendicular surface, staple from the top to the
bottom. You can perform stapling operations with less
fatigue by doing so.
• A staple will be bent or the tool can become jammed if
you mistakenly staple on top of another staple or strike
a knot in the wood. The staple may be thrown and hit
someone, or the tool itself can react dangerously. Place
the staples with care.
• Do not leave the loaded tool or the air compressor
under pressure for a long time out in the sun. Be sure
that dust, sand, chips and foreign matter will not enter
the tool in the place where you leave it setting.
• Do not point the ejection port at anyone in the vicinity.
Keep hands and feet away from the ejection port area.
• When the air hose is connected, do not carry the tool
with your finger on the trigger or hand it to someone in
this condition. Accidental firing can be extremely
dangerous.
• Handle the tool carefully, as there is high pressure
inside the tool that can be dangerous if a crack is
caused by rough handling (dropping or striking).
Do not attempt to carve or engrave on the tool.
• Stop stapling operations immediately if you notice
something wrong or out of the ordinary with the tool.
• Always disconnect the air hose and remove all of the
staples:
(9) When unattended.
(10) Before performing any maintenance or repair.
(11) Before cleaning a jam.
(12) Before moving the tool to a new location.
• Perform cleaning and maintenance right after finishing
the job. Keep the tool in tip-top condition. Lubricate
moving parts to prevent rusting and minimize friction-
related wear. Wipe off all dust from the parts.
• Do not modify tool without authorization from Makita.
• Ask Makita’s Authorized service centers for periodical
inspection of the tool.
• To maintain product SAFETY and RELIABILITY,
maintenance and repairs should be performed by
Makita Authorized Service Centers, always using
Makita replacement parts.
• Use only pneumatic tool oil specified in this manual.
• Never connect tool to compressed air line where the
maximum allowable pressure of tool cannot be
exceeded by 10%. Make sure that the pressure
supplied by the compressed air system does not
exceed the maximum allowable pressure of the
fastener driving tool. Set the air pressure initially to the
lower value of the recommended allowable pressure.

8
• Do not attempt to keep the trigger contact element
depressed with tape or wire. Death or serious injury
may occur.
• Always check contact element as instructed in this
manual. Staples may be driven accidentally if the safety
mechanism is not working correctly.
SAVE THESE INSTRUCTIONS.
Before use
WARNING:
• Never use the tool when the contact element does not
work in order.
The tool works only when the contact element is placed
against the workpiece and the trigger is pulled with the
contact element being depressed. Before use, make sure
that the contact element work in order by checking
according to the following procedure.
1. Before checking, make sure that the tool is not loaded
with staples.
2. Connect the air hose to the tool.
3. First pull the trigger only. And then release the trigger
and place the contact element against the workpiece.
(Fig. 2 & 3)
4. If the tool works in the above procedure, the contact
element does not work in order.
INSTALLATION
Selecting compressor (FIg. 4)
The air compressor must comply with the requirements of
EN60335-2-34.
Select a compressor that has ample pressure and air
output to assure cost-efficient operation. The graph shows
the relation between stapling frequency, applicable
pressure and compressor air output.
Thus, for example, if stapling takes place at a rate of
approximately 60 times per minute at a compression of
1.77 MPa (17.7 bar), a compressor with an air output over
40 liters/minute is required.
Pressure regulators must be used to limit air pressure to
the rated pressure of the tool where air supply pressure
exceeds the tool’s rated pressure. Failure to do so may
result in serious injury to tool operator or persons in the
vicinity.
Selecting air hose (FIg. 5)
Use a high pressure resistant air hose.
Use an air hose as large and as short as possible to
assure continuous, efficient stapling operation.
CAUTION:
• Low air output of the compressor, or a long or smaller
diameter air hose in relation to the stapling frequency
may cause a decrease in the driving capability of the
tool.
Lubrication (FIg. 6)
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possible to the tool.
Adjust the oiler so that one drop of oil will be provided for
every 50 staples.
When an air set is not used, oil the tool with pneumatic
tool oil by placing 2 (two) or 3 (three) drops into the air
fitting. This should be done before and after use. For
proper lubrication, the tool must be fired a couple of times
after pneumatic tool oil is introduced. (Fig. 7)
FUNCTIONAL DESCRIPTION
CAUTION:
• Always disconnect the hose before adjusting or
checking function on the tool.
Adjusting depth of stapling
CAUTION:
• Always disconnect the hose before adjusting the depth
of stapling. (Fig. 8 & 9)
If a staple is driven too deep, turn the adjuster clockwise.
If a staple is driven too shallow, turn the adjuster
counterclockwise.
The adjustable range is 0 - 3 mm. (One full turn allows 0.8
mm adjustment.)
Hook
CAUTION:
• Always disconnect the hose when hanging the tool
using the hook.
• Never hang the tool on a waist belt or like. Dangerous
accidental firing may result. (Fig. 10)
The hook is convenient for hanging the tool temporarily.
The hook position can be changed.
When changing the installation position, remove the
screw with a screwdriver. Install the hook in desired
position and then secure it with the screw.
Flat nose adapter
CAUTION:
• Always disconnect the hose before installing or
removing the flat nose adapter. (Fig. 11)
Before stapling on flat surface of workpiece, attach the flat
nose adapter to the contact element.
To attach the nose adapter to the contact element, press it
onto the contact element until the protrusion inside the
nose adapter fits the groove in the contact element.
ASSEMBLY
CAUTION:
• Always disconnect the hose before carrying out any
work on the tool.
Loading stapler
CAUTION:
• Always disconnect the hose before loading the tool or
removing staples.
• Do not use deformed staples or staple strip. Failure to
do so causes poor staple feeding.
• Always use staples specified in this instruction manual.
Failure to do so causes poor staple feeding.
• Always return the pusher slowly and gently while
holding it with a hand.
• Returning the pusher base with the pusher being
pressed does not allows staples to be loaded. Do not
press the pusher when loading. (Fig. 12)

9
Insert a strip of staples into the slit in the rear of the
magazine until it overpasses the staple stopper. The tool
accepts a strip of staples (84 pcs.) (Fig. 13)
Pull the pusher base all the way to the rear of the
magazine and return it slowly and gently to the original
position.
Removing staples (Fig. 14)
Hold the tool that the rear of magazine faces downward.
Pull the pusher base slightly, press the pusher from both
sides and release the staples. Return the pusher base
gently and slowly.
Press the staple stopper and then take out the staples
from the back of magazine.
Connecting air hose
Slip the air socket of the air hose onto the air fitting on the
stapler. Be sure that the air socket locks firmly into
position when installed onto the air fitting. A hose coupling
must be installed on or near the tool in such a way that the
pressure reservoir will discharge at the time the air supply
coupling is disconnected.
OPERATION
CAUTION:
• Make sure all safety systems are in working order
before operation.
1. To drive a staple, you may place the contact element
against the workpiece and pull the trigger, or (Fig. 15
& 16)
2. Pull the trigger first and then place the contact element
against the workpiece.
• No. (1) method is for intermittent stapling, when you
wish to drive a staple carefully and very accurately.
• No. (2) method is for continuous stapling.
CAUTION:
• However when the tool is set to the “Intermittent
stapling” mode, WITH THE TRIGGER HELD IN A
HALF-PULLED POSITION, an unexpected stapling
could occur, if contact element is allowed to re-contact
against the workpiece or the other surface under the
influence of recoil.
In order to avoid this unexpected stapling, perform as
follows;
- A. Do not place the contact element against the
workpiece with excessive force.
- B. Pull the trigger fully and hold it on for 1-2 seconds
after stapling.
• For No. (1) method, set the change lever to the
position.
For No. (2) method, set the change lever to the
position.
After using the change lever to change the stapling
method, always make sure that the change lever is
properly set to the position for the desired stapling
method. (Fig. 17 & 18)
Flooring
CAUTION:
• Tilting the tool too much tends to produce inflation on
the surface of workpiece. Holding it too upright tends to
cause a breakage of workpiece.
• Inflation or breakage on the stapled spot of workpiece
of workpiece may occur depending on many stapling
conditions, even when stapling holding the tool at the
specified angle. Try on some test samples before
actually stapling. (Fig. 19)
In stapling requiring accuracy, such as flooring, use in the
“Intermittent stapling” mode.
When stapling, hold the tool tilting it at the angles 50° -
55°shown in the figure.
Anti dry fire mechanism
This is the mechanism that the tool prevents to be fired
without nail.
Dry fire prevention automatically sets up when the rest of
nails get to last approximately 5 pieces.
Direction of exhaust air (Fig. 20)
The direction of exhaust air can be changed 360 degrees
of angle by turning the exhaust cover with a hand.
Removing jammed staples
WARNING:
• Always disconnect the hose before removing staplers.
Remove the staples from the magazine. (Refer to the
section titled “Removing staples”.) (Fig. 21)
Take out the hex wrench from the holder inside the
magazine cover by pushing it from the front. (Fig. 22)
Remove two screws securing the contact top with the hex
wrench.
The staple feeder guide will appear and clear jam.
When being still unable to remove the locked-up nails,
remove further two screws securing the front guide with
the hex wrench to clear jam.
MAINTENANCE
CAUTION:
• Always disconnect the air hose from the tool before
attempting to perform inspection or maintenance.
Maintenance of stapler
Always check the tool for its overall condition and loose
screws before operation. Tighten as required.
With tool disconnected, make daily inspection to assure
free movement of the contact element and trigger. Do not
use tool if the contact element or trigger sticks or binds.
Drain tool (Fig. 23)
Remove the hose from the tool. Place the tool so that the
air fitting faces down to the floor. Drain as much as
possible.
Cleaning of tool
Iron dust that adhere to the magnet can be blown off by
using an air duster.
Cap
When not in use, disconnect the hose. Then cap the air
fitting with the cap. (Fig. 24)
Storage
When not in use, the nailer should be stored in a warm
and dry place.

10
Maintenance of compressor, air set and
air hose (Fig. 25 & 26)
After operation, always drain the compressor tank and the
air filter. If moisture is allowed to enter the tool, It may
result in poor performance and possible tool failure.
Check regularly to see if there is sufficient pneumatic oil in
the oiler of the air set. Failure to maintain sufficient
lubrication will cause O-rings to wear quickly. (Fig. 27)
Keep the air hose away from heat (over 60°C, over
140°F), away from chemicals (thinner, strong acids or
alkalis). Also, route the hose away from obstacles which it
may become dangerously caught on during operation.
Hoses must also be directed away from sharp edges and
areas which may lead to damage or abrasion to the hose.
(Fig. 28)
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Staples
• Air hoses
• Safety goggles
Noise ENG104-2
The typical A-weighted noise level determined according
to EN792:
Sound pressure level (LpA): 80 dB (A)
Uncertainty (K): 3 dB (A)
The noise level under working may exceed 80 dB (A).
Wear ear protection.
Vibration ENG233-2
The vibration emission value determined according to
EN792:
Vibration emission (ah): 2.5 m/s2
Uncertainty (K): 1.5 m/s2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test method
and may be used for comparing one tool with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the power
tool can differ from the declared emission value
depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of exposure in
the actual conditions of use (taking account of all parts
of the operating cycle such as the times when the tool
is switched off and when it is running idle in addition to
the trigger time).
For European countries only ENH003-11
EC Declaration of Conformity
We Makita Corporation as the responsible
manufacturer declare that the following Makita
machine(s):
Designation of Machine: Narrow Crown Stapler
Model No./ Type: AT450H
are of series production and
Conforms to the following European Directives:
98/37/EC until 28th December 2009 and then with
2006/42/EC from 29th December 2009
And are manufactured in accordance with the following
standards or standardised documents:
EN792
The technical documentation is kept by our authorised
representative in Europe who is:
Makita International Europe Ltd.,
Michigan, Drive, Tongwell,
Milton Keynes, MK15 8JD, England
30th January 2009
Tomoyasu Kato
Director
Makita Corporation
3-11-8, Sumiyoshi-cho
Anjo, Aichi, JAPAN