Hitachi Nr90aes Owners Manual

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BEFORE OPERATION
Read section titled “SAFETY” (pages 4 – 7).
Make sure of the followings before operation.
WORKING ENVIRONMENT
WARNING
●No flammable gas, liquid or other
flammable objects at worksite.
●Clear the area of children or
unauthorized personnel.
AIR SUPPLY
DANGER
●NEVER use oxygen or
other bottled
gases. Explosion may
occur.
WARNING
●Never connect Nailer to pressure which
potentially exceeds 200 psi (13.7 bar
14 kgf/cm
2).
●Never use non relieving coupler on
Nailer.
1. Power source...

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Air consumption table
Air compressor size formula
Amount of air required
= number of Nailers
× average nails driven each minute
per Nailer
× air consumption at given air
pressure
× safety factor (always 1.2)
Example: 2 Nailers operating at 100 psi
driving 30 nails per minute
Amount of air required
= 2 × 30 × .088 (2.5) × 1.2
= 6.3 CFM (ft
3/min) (180 ltr/min)
After making the calculations as shown
above, you should find a compressor
providing 6.3 CFM of air that is required.
LUBRICATION
It is...

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Set the switching device to the upward
position (SINGLE SEQUENTIAL
ACTUATION MECHANISM).
(Set the switching device to the upward
position completely as shown in the
diagram. Otherwise, it will not operate
properly.)
          
THE NAILER MUST NOT LEAK AIR.
(3) Remove the finger from the trigger and
press the push lever against the
workpiece.
THE NAILER MUST NOT OPERATE.
      
(4)Separate the push lever from the
workpiece.
Next, point the nailer downward, pull the
trigger and then wait in...

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(5)1Without touching the trigger,
depress the push lever against the
workpiece.
Pull the trigger.
THE NAILER MUST OPERATE.
2Remove the finger from the trigger.
Nailer operation will end (the driver
blade will return to the top).
(6)Set the switching device to the
downward position (CONTACT
ACTUATION MECHANISM).
(Set the switching device to the
downward position completely as
shown in the diagram. Otherwise, it will
not operate properly.)
            
With the Nailer off the workpiece, pull...

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Removing the nails:
1Pull the nail feeder (B) backward.
2Return the nail feeder (B) forward quietly
while pushing the nail feeder (A).
3Push the nail stopper toward the
magazine side, and pull out nails from
the back of the magazine.(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:
●Quietly push the Nail Feeders (A) and (B)
against the nail.
If the Nail Feeders...

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●Keep fingers AWAY from trigger when
not driving nails to avoid accidental
firing.
●Choice of triggering method is
important.
Please read and understand “Methods
of Operation” below.
●Before starting work, check the nailing
operation switching device.
This Hitachi nailer includes a nailing
operation switching device.
Before starting work, make sure that
the switching device is properly set.
If the switching device is not set
properly, the nailer will not operate
correctly.
●Never place your...

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WARNING
●To avoid double firing or accidental
firing due to recoil.
1) Do not press the nailer against the
wood with excessive force.
2)Separate the nailer from the wood as
it recoils after nailing.
1Set the switching device to the
downward position (to set to CONTACT
ACTUATION MECHANISM).
(Set the switching device to the
downward position completely as
shown in the diagram. Otherwise, it will
not operate properly.)
2Pull the trigger with the Nailer off the
workpiece.
3Depress the push lever...

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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.
ADJUSTING THE NAILING DEPTH
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...

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3Stop turning the adjuster when a suitable
position is reached for a nailing test.
4Connect the air hose.
ALWAYS WEAR EYE PROTECTOR.
Perform a nailing test.
CAUTION
●Check that the nail feeder slides smoothly
by pulling it with finger.
If not smooth, nails can be driven at an
irregular angle and hurt someone.
2. Storing

When not in use for an extended period,
apply a thin coat of the lubricant to the
steel parts to avoid rust.

Do not store the Nailer in a cold weather
environment.
Keep the...

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MODIFICATIONS
Hitachi Power Tools are constantly being
improved and modified to incorporate
the latest technological advancements.
Accordingly, some parts (i.e. code
numbers and/or design) may be
changed without prior notice.
SERVICE AND REPAIRS
WARNING
●Only service personnel trained by
Hitachi, distributor or employer shall
repair the Nailer.
●Use only parts supplied or
recommended by Hitachi for repair.
All quality Nailers will eventually require
servicing or replacement of parts because...