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3. Air hose
Air hose must have a minimum working pressure
rating of 150 psi (10.4 bar 10.6 kgf/cm
maximum pressure produced in the system,
whichever is higher.
4. Hose coupling
The Nailer can be installed as follows:
Remove the dust cap placed at the air inlet.
Install a 3/8 NPT male plug at the air inlet.
3/8 NPT Male Plug
A female coupler must be on the air hose.
The hose coupling (male plug-female coupler) must
remove all pressure from the Nailer when
disconnected.
Never use a non relieving coupler on the Nailer.
5. Air consumption
Using the Air consumption table and the Air
compressor size formula, find a correct compressor
size.
Air consumption table
psi
Operating pressure (bar)
(kgf/cm
NV83A2
Air consumption
3
ft
/cycle
NV65AC
(ltr/cycle)
NV50A1
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 (NV83A2) operating at 100 psi
driving 30 nails per minute
Amount of air required
=2 × 30 × .084 (2.4) × 1.2
3
=6.0 CFM (ft
/min) (173 ltr/min)
After making the calculations as shown above, you
should find a compressor providing 6.0 CFM of air
that is required.
2
) or 150% of the
Dust Cap
80
90
100
(5.5)
(6.2)
(6.9)
2
)
(5.6)
(6.3)
(7)
.062
.073
.084
(1.8)
(2.1)
(2.4)
.048
.061
.075
(1.4)
(1.7)
(2.1)
.025
.030
.035
(.71)
(.85)
(.99)
— 11 —
LUBRICATION
It is important that the Nailer be properly lubricated.
Without proper lubrication, the Nailer will not work
properly and parts will wear prematurely.
Use Hitachi pneumatic tool lubricant.
Do not use detergent oil or additives. These lubricants
will harm the O-rings and other rubber parts. This will
cause the Nailer to malfunction.
Filter-regulator-lubricator units should always be
used.
Keep the lubricator filled with Hitachi pneumatic tool
lubricant.
If a lubricator is not available, supply 5 – 10 drops of
Hitachi pneumatic tool lubricant into the air plug on
the Nailer twice a day.
COLD WEATHER CARE
Do not store the Nailer in a cold weather environment.
Keep the Nailer in a warm area until beginning the
work.
If the Nailer is already cold, bring it in a warm area
and allow the Nailer to warm up before use.
1 Reduce the air pressure to 64 psi (4.4 bar
4.5 kgf/cm
2
).
2 Remove all nails from the Nailer.
3 Connect the air hose and free-fire (blank-fire) the
Nailer.
The lowered air pressure will be enough to free-
fire the Nailer.
Slow speed operation tends to warm up the
moving part.
CAUTION
Do not free-fire the Nailer at high pressure.
TESTING THE NAILER
DANGER
WARNING
Never use Nailer unless push lever is operating
properly.
Before actually beginning the nailing work, test the Nailer
by using the check list below. Conduct the tests in the
following order.
If abnormal operation occurs, stop using the Nailer and
contact a Hitachi authorized service center immediately.
English
Operators and others in
work area MUST wear
safety glasses with side
shields which conforms to
ANSI Z87.1 specifications.
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