Hitachi NR90AE Instruction Manual - Page 10

Lubrication, Weather, &caution, Testing, Nailer, &danger, Warning

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English 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/cm2) Air consumption ft3/cycle (Itr/cycle) 80 (5.5) (5.6) .062 (1.7) 90 (6.2) (6.3) .075 (2.1) 100 (6.9) (7) .088 (2.5) Air compressor size formula Amount of air required =number of Nailers x average nails driven each minute per Nailer x air consumption at given air pressure x safety factor (always 1.2) Example: 2 Nailers operating at 100 psi driving 30 nails per minute Amount of air required =2 x 30 x .088 (2.5) x 1.2 =6.3 CFM (ft3/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 important that the Nailer be properly lubricated. Without proper lubrication, the Nailer will not work properly and parts will wear prematurely. O 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. O Filter-regulator-lubricator units should always be used. Keep the lubricator filled with Hitachi pneumatic tool lubricant. O 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 O Do not store the Nailer in a cold weather environment. Keep the Nailer in a warm area until beginning the work. O If the Nailer is already cold, bring it in a warm area and allow the Nailer to warm up before use. 0 Reduce the air pressure to 64 psi (4.4 bar 4.5 kgf/cm9. 0 Remove all nails from the Nailer. C) Connect the air hose and free-fire (blank-fire) the Nailer. The lowered air pressure will be enough to freefire 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 • Operators and others in work area MUST wear fl safety glapsses with side shields which conforms to ANSI Z87.1 specifications. & 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. El ALL SCREWS MUST BE TIGHTENED. If any screws are loose, tighten them. CI THE PUSH LEVER AND TRIGGER MUST MOVE SMOOTHLY. Trigger Push Lever Do not connect air hose (2) Adjust the air pressure to 70 psi (4.9 bars 5 kgf/cm2). Connect the air hose. Do not load any nails in the Nailer. Set the switching device to the upward position (SINGLE ACTUATION MECHANISM). - 10 -

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English
5.
Air
consumption
Using
the
Air
consumption
table
and
the
Air
compressor
size
formula,
find
a
correct
compressor
size.
Air
consumption
table
psi
80
90
100
Operating
pressure
(bar)
(5.5)
(6.2)
(6.9)
(kgf/cm
2
)
(5.6)
(6.3)
(7)
Air
consumption
ft
3
/cycle
.062
.075
.088
(Itr/cycle)
(1.7)
(2.1)
(2.5)
Air
compressor
size
formula
Amount
of
air
required
=number
of
Nailers
x
average
nails
driven
each
minute
per
Nailer
x
air
consumption
at
given
air
pressure
x
safety
factor
(always
1.2)
Example:
2
Nailers
operating
at
100
psi
driving
30
nails
per
minute
Amount
of
air
required
=2
x
30
x
.088
(2.5)
x
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
important
that
the
Nailer
be
properly
lubricated.
Without
proper
lubrication,
the
Nailer
will
not
work
properly
and
parts
will
wear
prematurely.
O
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.
O
Filter
-regulator
-lubricator
units
should
always
be
used.
Keep
the
lubricator
filled
with
Hitachi
pneumatic
tool
lubricant.
O
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
O
Do
not
store
the
Nailer
in
a
cold
weather
environment.
Keep
the
Nailer
in
a
warm
area
until
beginning
the
work.
O
If
the
Nailer
is
already
cold,
bring
it
in
a
warm
area
and
allow
the
Nailer
to
warm
up
before
use.
0
Reduce
the
air
pressure
to
64
psi
(4.4
bar
4.5
kgf/cm9.
0
Remove
all
nails
from
the
Nailer.
C)
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
fl
•
Operators
and
others
in
work
area
MUST
wear
safety
glapsses
with
side
shields
which
conforms
to
ANSI
Z87.1
specifications.
&
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.
El
ALL
SCREWS
MUST
BE
TIGHTENED.
If
any
screws
are loose,
tighten
them.
CI
THE
PUSH
LEVER
AND
TRIGGER
MUST
MOVE
SMOOTHLY.
Push
Lever
Trigger
Do
not
connect
air
hose
(2)
Adjust
the
air
pressure
to
70
psi
(4.9
bars
5
kgf/cm
2
).
Connect
the
air
hose.
Do
not
load
any
nails
in
the
Nailer.
Set
the
switching
device
to
the
upward
position
(SINGLE
ACTUATION
MECHANISM).
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10
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