Hitachi NR 83AA4 ユーザーズマニュアル

11

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)

.062

(1.7)

.075

(2.1)

.088

(2.5)

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

3

/min) (180 ltr/min)

  After making the calculations as shown above, you 

should  fi nd a compressor providing 6.3 CFM of air 

that is required.

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.

○  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.

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.

□  THE PUSH LEVER AND TRIGGER MUST MOVE 

SMOOTHLY.

Push Lever

Trigger

Do not connect 

air hose

000Book_NR83AA4_US.indb   11

000Book_NR83AA4_US.indb   11

2013/04/23   15:04:13

2013/04/23   15:04:13