Functional Description - Makita AN923 Manual De Instrucciones

• 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 40 times per minute at a compression of
0.59 MPa (5.9 bar), a compressor with an air output
3
over 3 CFM (ft /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 an air hose as large a diameter and as short as
possible to assure continuous, efficient nailing
operation. With an air pressure of 0.49 MPa (4.9 bar),
an air hose with an internal diameter of over 8.5 mm
(5/16") and a length of less than 20 m (6.6 ft.) is
recommended when the interval between each nailing
is 0.5 seconds. Air supply hoses shall have a minimum
working pressure rating of 1.03 MPa (10.3 bar) or 150
percent of the maximum pressure produced in the
system whichever is higher.
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 lock the trigger and disconnect the hose before
adjusting or checking function on the tool.
8
Nose adapter (Accessory)
CAUTION:
• Always lock the trigger and disconnect the hose before
installing or removing the nose adapter.
When nailing workpieces with easily-marred surfaces, use
the nose adapter.
Attach the nose adapter to the contact arm. (Fig. 6)
Adjusting depth of nailing (Fig. 7)
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
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 a lower air pressure and
the adjuster set to a lower depth of nail driving.
CAUTION:
• Always lock the trigger and disconnect the hose before
adjusting the depth of nailing.
Installing the hook (Fig. 8)
CAUTION:
• Always lock the trigger and 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.
To use the hook, simply lift up hook until it snaps into the
open position.
When not in use, always lower hook until it snaps into the
closed position.
ASSEMBLY
CAUTION:
• Always lock the trigger and disconnect the hose before
carrying out any work on the tool.
Loading the nailer (Fig. 9)
Select nails suitable for your work. Insert strip of nails into
the magazine. (Fig. 10)
Load nails so that they get parallel to the driver guide.
(Fig. 11)
Pull the pusher lever to the rear to engage the pusher to
the last nail.
Unloading nailer (Fig. 12)
Pull the pusher lever to the rear. Return the pusher lever
back while keeping the pusher depressed to disengage it
from the strip of nails.
Depress the nail stopper and remove the strip of nails
from the magazine. (Fig. 13)
Connecting the air hose (Fig. 14)
Lock the trigger. 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