Before Use - Hitachi NR 90AD Instrucciones De Manejo

Check the nailer for air leaks and defective or rusty
parts.
Check whether or not the push lever works correctly.
Also check whether or not any dirt has adhered to the
moving parts of the push lever.
Recheck on operational safety.

BEFORE USE

1. Check the air pressure
CAUTION
The air pressure must be constantly maintained at 4.9
– 8.3 bar (70 – 120 psi.).
Adjust the air pressure between 4.9 to 8.3 bar (70 ~
120 psi.) according to the diameters and length of nails
and hardness of the wood being nailed. Pay special
attention to the output pressure, capacity, and piping
on the air compressor, so that air pressure does not
exceed the specified limit. Note that excessive
pressure may affect overall performance, service life,
and safety.
2. Lubrication
(1) Prior to operating this nailer, be sure to provide an air
set between the air compressor and this device.
Lubrication through the air set offers smooth
operation, extended service life, and anticorrosion.
Adjust the oiler so that a single drop of oil is supplied
at intervals of 5 to 10 nailing cycles.
(2) It is recommended using the recommended oil (SHELL
TONNA). Other applicable oils are listed. Never mix
two or more types of different oils.
3. Load nails
(1) Insert nail strip into rear of magazine (See Fig. 2).
(2) Slide the nail strip forward in the magazine.
The nail strip should pass the nail stopper.
(3) Pull the nail feeder (B) back to engage the nail feeder
(A) to the nail strip.
NOTE
Use nail strip of more than 5 nails.
The Nailer is now ready to operate.
Removing the nails:
1 Pull the nail feeder (B) backward.
2 Return the nail feeder (B) forward quietly while
pushing the nail feeder (A).
3 Push the nail stopper toward the magazine side, and
pull out nails from the back of the magazine.
CAUTIONS
To prevent unintentional operation, never touch the
trigger or place the top end of the push lever on a
work bench on floor. Also, never face the nail outlet
toward any part of a person.
HOW TO USE THE NAILER
CAUTIONS
Never use the head or body of this device as a
hammer.
Take precautions to ensure the safety of persons in
the vicinity during operation.
1. Nailing procedures
This Hitachi nailer is equipped with a nailer operation
switching device.
Use SINGLE ACTUATION MECHANISM or CONTACT
ACTUATION MECHANISM in accordance with the
work to be performed.
(1) Intermittent nailing
Set the switching device to the upward position (to set
to SINGLE ACTUATION MECHANISM) (See Fig. 3).
Depress the nail outlet onto the desired point; then pull
the trigger to drive a nail in a single shot (See Fig. 4).
After nailing once, nailing will not be possible again
until the trigger is released and pressed again.
CAUTION
If you do not pull the trigger quickly and crisply while
in the single shot mode, the nailer will bounce and
shoot several nails instead of just one. To avoid this,
be sure to pull the trigger quickly and crisply.
(2) Push lever
When depressing the nail outlet, be sure to fully lift
the push lever (See Fig. 4) to release the safety lock.
Thus, nails cannot be driven without releasing the
safety lock even though the trigger is pulled.
(3) Continuous nailing
Set the switching device to the downward position (to set
to CONTACT ACTUATION MECHANISM) (See Fig. 5).
First, pull the trigger. Then depress the devise onto the
desired position to automatically drive nails (See Fig. 6).
CAUTION
Exercise care when nailing corners of lumber. When
continuous nailing corners of lumber, a nail may go
astray or break through the corner.
Do not drive a nail on another nail.
Do not drive a nail on metal parts.
NOTES
Precautions on no-load operation
Sometimes nailing will continue after driving in all
nails previously contained in the magazine.
This is termed "no-load operation". Such operation
may deteriorate the damper, magazine, and nail
feeder.
To avoid no-load operation, occasionally confirm the
amount of remaining nails. On the other hand, all nails
should be removed after using this nailer.
Always handle nails and package carefully. If nails
are dropped, collating bond may be broken.
After nailing:
(1) disconnect air hose from the nailer;
(2) remove all nails from the nailer;
(3) supply 5 – 10 drops of Hitachi pneumatic tool
lubricant into the air plug on the nailer; and
(4) open the petcock on the air compressor tank to
drain any moisture.
Under low temperature conditions, the machine
sometimes does not operate correctly. Always operate
the machine at the appropriate ambient temperature.
2. Adjusting the nailing depth (See Fig. 7)
To assure that each nail penetrates to the same depth,
be sure that:
(1) the air pressure to the Nailer remains constant
(regulator is installed and working properly), and
(2) the Nailer is always held firmly against the
workpiece.
If nails are driven too deep or shallow into the
workpiece, adjust the nailing in the following order.
1 DISCONNECT AIR HOSE FROM NAILER.
2 If nails are driven too deep, turn the adjuster to
the shallow side.
English
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