Functional Description - Makita AN450H Manual De Instrucciones

exceed the maximum allowable pressure of the
fastener driving tool. Set the air pressure initially to the
lower value of the recommended allowable pressure.
• 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. Nails may be driven accidentally if the safety
mechanism is not working correctly.
SAVE THESE INSTRUCTIONS.
INSTALLATION
Selecting compressor (FIg. 2)
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 nailing frequency, applicable
pressure and compressor air output.
Thus, for example, if nailing takes place at a rate of
approximately 50 times per minute at a compression of
1.76 MPa (17.6 bar), a compressor with an air output over
90 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. 3)
Use a high pressure resistant air hose.
Use an air hose as large and as short as possible to
assure continuous, efficient nailing operation.
CAUTION:
• Low air output of the compressor, or a long or smaller
diameter air hose in relation to the nailing frequency
may cause a decrease in the driving capability of the
tool.
Lubrication (Fig. 4)
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
30 nails.
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. 5)

FUNCTIONAL DESCRIPTION

CAUTION:
• Always disconnect the air hose before adjusting or
checking function on the tool.
Adjusting depth of nailing (Fig. 6)
To adjust the depth of nailing, turn the adjuster. The depth
of nailing is the deepest when the adjuster is turned fully
in the A direction shown in the figure. It will become
shallower as the adjuster is turned in the B direction. If
8
nails cannot be driven deep enough even when the
adjuster is turned fully in the A direction, increase the air
pressure. If nails are driven too deep even when the
adjuster is turned fully in the B direction, decrease the air
pressure. Generally speaking, the tool service life will be
longer when the tool is used with lower air pressure and
the adjuster set to a lower depth of nail driving.
CAUTION:
• Always disconnect the hose before adjusting the depth
of nailing.
Hook (FIg. 7)
CAUTION:
• Always disconnect the hose from the tool.
• Never hook the tool at high location or on potentially
unstable surface.
The hook is convenient for hanging the tool temporarily.
Adjusting the shingle guide (FIg. 8 & 9)
The shingle guide is designed for consistent shingle
exposure. Place shingle in desired position.
Turn the lever clockwise to release the adjusting plate.
Reset the tool on the exposed shingle with the projections
of the contact element depressing the bottom of the
previous row of the shingle. Slide the adjusting plate up
against the bottom of the exposed shingle and turn the
lever counterclockwise to lock the adjusting plate.
ASSEMBLY
CAUTION:
• Always disconnect the air hose before carrying out any
work on the tool.
Loading nailer (Fig. 10)
Select nails suitable for your work. Depress the latch lever
and open the magazine cap.
Lift and turn the coil support plate so that the arrow with
nail size indicated on the coil support plate will point to the
corresponding graduation increment marked on the
magazine. If the tool is operated with the coil support plate
set to the wrong step, poor nail feed or malfunction of the
tool may result. (Fig. 11)
Place the nail coil over the coil support plate. Uncoil
enough nails to reach the feed claw. Place the first nail in
the driver channel and the second nail in the feed claw.
Place other uncoiled nails on feeder body. Close the
magazine cap after checking to see that the nail coil is set
properly in the magazine. (Fig. 12)
Connecting air hose (Fig. 13)
Slip the air socket of the air hose onto the air fitting on the
nailer. 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.