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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/cm2) 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

psi

80

90

100

(bar)

(5.5)

(6.2)

(6.9)

pressure

(kgf/cm2)

(5.6)

(6.3)

(7)

Air

ft3/cycle

.028

.032

.039

consumption

(ltr/cycle)

(.8)

(.9)

(1.1)

 

 

 

 

 

Air compressor size formula Amount of air required =number of Staplers

⋅average staples driven each minute per Stapler

⋅air consumption at given air pressure

⋅safety factor (always 1.2) Example: 3 Staplers (N5021A) operating

at 100 psi driving 30 staples per minute

Amount of air required =3 ⋅ 30 ⋅ .039 (1.1) ⋅ 1.2

=4.2 CFM (ft3/min) (119 ltr/min)

After making the calculations as shown above, you should find a compressor providing 4.2 CFM of air that is required.

LUBRICATION

It is important that the Stapler be properly lubricated.

Without proper lubrication, the Stapler 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 Stapler 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 5 – 10 drops of Hitachi pneumatic tool lubricant into the air plug on the Stapler twice a day.

COLD WEATHER CARE

￿Do not store the Stapler in a cold weather environment.

Keep the Stapler in a warm area until beginning the work.

￿If the Stapler is already cold, bring it in a warm area and allow the Stapler to warm up before use.

1 Reduce the air pressure to 64 psi (4.4

bar 4.5 kgf/cm2).

2Remove all staples from the Stapler.

3 Connect the air hose and free-fire (blank-fire) the Stapler.

The lowered air pressure will be enough to free-fire the Stapler. Slow speed operation tends to warm up the moving part.

CAUTION

￿Do not free-fire the Stapler at high pressure.

TESTING THE STAPLER

DANGER

￿ Operators and others in work area MUST wear safety glasses with side shields which conforms to ANSI Z87.1 specifications.

WARNING

￿Never use Stapler unless push lever is operating properly.

Before actually beginning the stapling work, test the Stapler by using the checklist below. Conduct the tests in the following order.

If abnormal operation occurs, stop using the Stapler and contact a Hitachi authorized service center immediately.

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