Hitachi Koki USA NR 90AC3 manual Preventive Mechanism for Unloaded Operation, Methods of Operation

Models: NR 90AC3

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English

PREVENTIVE MECHANISM FOR UNLOADED OPERATION

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 5 (This differs by the type of nail).

Load the nails immediately if you come across with such a condition during operation.

Push Lever Stopper

5

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.

METHODS OF OPERATION

This Nailer is equipped with the push lever and does not operate unless the push lever is depressed (upward position).

There are two methods of operation to drive nails with this Nailer.

They are :

1.Intermittent operation (Trigger fire) :

2.Continuous operation (Push lever fire) :

(1)Intermittent operation (Trigger fire)

Use the SINGLE ACTUATION MECHANISM setting.

WARNING

Unlike the FULL SEQUENTIAL ACTUATION MECHANISM, please note that the SINGLE ACTUATION MECHANISM of this Hitachi nailer will drive a nail each time the push lever is pressed against the wood as long as the trigger is pressed.

For intermittent operation, set the switching device to the upward position completely. (i.e. Set to SINGLE ACTUATION MECHANISM.)

To avoid double firing or accidental firing due to recoil.

1)Set the switching device to SINGLE ACTUATION MECHANISM.

2)Pull the trigger rapidly and firmly.

1Set the switching device to the upward position (to set to SINGLE ACTUATION MECHANISM). (Set the switching device to the upward position completely as shown in the diagram. Otherwise, it will be set to CONTACT ACTUATION

MECHANISM.)

2Position the nail outlet on the workpiece with

finger off the trigger.

3Depress the push lever firmly until it is completely

depressed.

4 Pull the trigger to drive a nail.

5 Remove finger from the trigger.

To continue nailing in a separate location, move the nailer along the wood, repeating steps 2 - 5 as required.

1 Upward position

Switching Device

Trigger

4

3

Push Lever

(2)Continuous operation (Push lever fire) Using CONTACT ACTUATION MECHANISM

WARNING

To avoid double firing or accidental firing due to recoil.

1)Do not press the nailer against the wood with excessive force.

2)Separate the nailer from the wood as it recoils after nailing.

1Set the switching device to the downward position (to set to CONTACT ACTUATION MECHANISM). (Set the switching device to the downward

position completely as shown in the diagram. Otherwise, it will not operate properly.)

2Pull the trigger with the Nailer off the workpiece.

3 Depress the push lever against the workpiece to drive a nail.

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Hitachi Koki USA NR 90AC3 manual Preventive Mechanism for Unloaded Operation, Methods of Operation