Lubrication; Cold Weather Care; Testing The Nailer - Metabo HPT NR 90AF Manuel D'instructions Et De Sécurité

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4. Air consumption
Using the Air consumption table and the Air
compressor size formula, fi nd a correct compressor
size.
Air consumption table
psi
Operating pressure (bar)
(kgf/cm
ft
3
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 × .088 (2.5) × 1.2
= 6.3 CFM (ft /min) (180 ltr/min)
3
After making the calculations as shown above, you
should fi nd 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.
○ Use metabo HPT 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 metabo HPT pneumatic
tool lubricant.
○ If a lubricator is not available, supply 5 – 10 drops of
metabo HPT 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 Remove all nails from the Nailer.
3 Connect the air hose and free-fi re (blank-fi re) the
Nailer.
12
80 90
(5.5) (6.2)
) (5.6) (6.3)
2
/cycle .062 .075
(1.7) (2.1)
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.
100
(6.9)

TESTING THE NAILER

(7)
.088
(2.5)
● Never use Nailer unless push lever is
operating properly.
The machine employs a preventive mechanism for
unloaded operation.
The machine enters a state where the push lever stopper
runs into the upper part of the push lever and the push
lever cannot be pushed up. This takes place when the
magazine is not loaded with nails or when the remaining
number of nails becomes less than 6 (This diff ers by the
type of nail).
Push lever
CAUTION
● Use caution not to throw the push lever tip onto
wood and the like while the push lever stopper is
in the upper part of the push lever.
).
2
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 metabo HPT authorized service center immediately.
DANGER
● Operators and others in work
area MUST
glapsses with side shields
which conforms to ANSI Z87.1
specifi cations.
Ordinary eyeglasses do not
provide adequate protection.
WARNING
Push lever stopper
wear safety
6