Lubrication; Cold Weather Care - Hitachi NT 50AE Instruction Manual

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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/
2
cm ) or 150% of the maximum pressure produced in the system, whichever is higher.
4. Air consumption
Using the Air consumption table and the Air compressor size formula, find a correct
compressor size.
Air consumption table
Operating pressure (bar)
Air consumption
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: 3 Nailers (NT50AE(S) or NT32AE(S)) operating at 100 psi driving 30 nails per
minute
Amount of air required
= 3 × 30 × .025 (.73) × 1.2
= 2.7 CFM (ft
After making the calculations as shown above, you should find a compressor
providing 2.7 CFM of air that is required.

LUBRICATION

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 2 – 3 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, 5.0 kgf/cm
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.
12
psi
(kgf/cm
3
ft
(ltr/cycle)
3 /min) (78.8 ltr/min)
80
(5.5)
2
) (5.6)
/cycle .019
(.55)
90 100
(6.2) (6.9)
(6.3) (7)
.023 .025
(.64) (.73)
2
).