Lubrication; Cold Weather Care; Testing The Nailer - Hitachi NR 38AK Instruction And Safety Manual

Air consumption table
psi
Operating pressure (bar)
(kgf/cm
ft
Air consumption
(Itr/cycle)
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 × .074 (2.1) × 1.2
=5.3 CFM (ft /min) (150 ltr/min)
3
After making the calculations as shown above, you
should fi nd a compressor providing 5.3 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.
○ 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 70 psi (4.9 bar
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.
80 90
(5.5) (6.2)
) (5.6) (6.3)
2
/cycle .057 .064
3
(1.6) (1.8)
CAUTION
● Do not free-fi re the Nailer at high pressure.
100
(6.9)

TESTING THE NAILER

(7)
.074
(2.1)
● Never use Nailer unless push lever is
operating properly.
● Do not push tool forward when positioning
the fi rst nail in metal hole. If pushing forward,
nail head will be damaged and broken, or will
cause jamming.
This tool has a Sequential Trip Mechanism (Single Shot)
for use when precision nail placement is necessary.
You must fi rst depress the nail point where you want
to drive a nail and then pull the trigger.
After the nail is driven, completely release the trigger
and lift the tool off the work surface.
This tool is not designed for contact trip operation (bounce
fi re), and not available for contact trip valve units.
It has a diff erent push lever mechanism from another
nailers.
The position of the push lever when the nail feeder is
pulled back is shown as below.
When nails are loaded and the trigger is depressed, the
push lever comes down and when the push lever touches
the workpiece, a nails is driven.
DANGER
● Operators and others in work
area MUST
glasses with side shields
which conforms to ANSI Z87.1
specifi cations.
WARNING
At Non-Firing
Push Lever
Nose
English
wear safety
11