
12
English
○
Filter-regulator-lubricator units should always be
used.
Keep the lubricator
fi
lled 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-
fi
re (blank-
fi
re) the
Nailer.
The lowered air pressure will be enough to free-
fi
re the Nailer.
Slow speed operation tends to warm up the
moving part.
CAUTION
●
Do not free-
fi
re the Nailer at high pressure.
TESTING THE NAILER
DANGER
●
Operators and others in work
area MUST wear safety
glasses with side shields
which conforms to ANSI Z87.1
speci
fi
cations.
Ordinary eyeglasses do not
provide adequate protection.
WARNING
●
Never use Nailer unless push lever is
operating properly.
Before actually beginning the nailing work, test the Nailer
by using the checklist below. Conduct the tests in the
following order.
If abnormal operation occurs, stop using the Nailer and
contact a Hitachi authorized service center immediately.
(1) DISCONNECT AIR HOSE FROM NAILER.
REMOVE ALL NAILS FROM NAILER.
□
ALL SCREWS MUST BE TIGHTENED.
If any screws are loose, tighten them.
Nailer Side
Filter
Lubricator
Compressor Side
Regulator
3. Air
hose
Compressed air supply hoses shall have a minimum
working pressure rating equal to or greater than the
pressure from the power source if a regulator fails, or
150 psi (10.4 bar 10.6 kgf/cm
2
), whichever is greater.
4. Air
consumption
Using the Air consumption table and the Air
compressor size formula,
fi
nd a correct compressor
size.
Air consumption table
Operating pressure
psi
(bar)
(kgf/cm
2
)
80
(5.5)
(5.6)
90
(6.2)
(6.3)
100
(6.9)
(7)
Air consumption
ft
3
/cycle
(Itr/cycle)
.071
(2.0)
.081
(2.3)
.085
(2.4)
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 × .085 (2.4) × 1.2
=6.1 CFM (ft
3
/min) (173 ltr/min)
After making the calculations as shown above, you
should
fi
nd a compressor providing 6.1 CFM of air
that is required.
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.
000Book̲NV75AN̲US.indb 12
000Book̲NV75AN̲US.indb 12
2016/02/05 16:05:12
2016/02/05 16:05:12
Содержание NV 75AN
Страница 65: ...65 000Book NV75AN US indb 65 000Book NV75AN US indb 65 2016 02 05 16 05 16 2016 02 05 16 05 16 ...
Страница 70: ...70 000Book NV75AN US indb 70 000Book NV75AN US indb 70 2016 02 05 16 05 19 2016 02 05 16 05 19 ...
Страница 71: ...71 000Book NV75AN US indb 71 000Book NV75AN US indb 71 2016 02 05 16 05 19 2016 02 05 16 05 19 ...