Methods Of Operation - Hitachi NR 1890DC Instruction And Safety Manual

● Choice of triggering method is important.
Please read and understand "METHODS OF
OPERATION" found below.
● Before starting work, check the nailing
operation switching device.
This Hitachi nailer includes a nailing
operation switching device.
Before starting work, make sure that the
switching device is properly set.
If the switching device is not set properly, the
nailer will not operate correctly.
● Never place your face, hands or feet near
fi ring head when using.
● Do not drive nails on top of other nails or
with Nailer at too steep of an angle; nails can
ricochet and hurt someone.
● Do not drive nails into thin boards or near
corners and edges of workpiece. Nails can be
driven through or away from workpiece and
hit someone.
● Never drive nails from both sides of a wall
at the same time. Nails can be driven into
and through the wall and hit a person on the
opposite side.
● Never use Nailer which is defective or
operating abnormally.
● Do not use Nailer as hammer.
● Remove all remaining fasteners and battery
from nailer when:
1) doing maintenance and inspection;
2) checking proper operation of push lever
and trigger;
3) cleaning a jam;
4) it is not in use;
5) leaving work area;
6) moving it to another location; and
7) handing it to another person.
● Remove battery from Nailer when:
1) loading nails;
2) turning the adjuster.
This Hitachi nailer is equipped with a nailer operation
switching device.
Use FULL SEQUENTIAL ACTUATION MECHANISM or
CONTACT ACTUATION MECHANISM in accordance with
the work to be performed.
Explanation of the various nailing operations
○ FULL SEQUENTIAL ACTUATION MECHANISM:
First, press the push lever against the wood; next,
pull the trigger to drive the nail.
Follow the same sequence to continue driving nails.
After nailing once, nailing will not be possible again
until remove fi nger from the trigger and lift the tool off
the wood surface completely.
○ CONTACT ACTUATION MECHANISM:
CONTACT ACTUATION can follow two diff erent
sequences, depending on your use.
To drive several nails:
1. Pull the trigger.
2. Press the push lever against the wood to drive the
nail.
3. If the trigger is held back, a nail will be driven each
time the push lever is pressed against the wood.
To drive a single nail:
1. Press the push lever against the wood.
2. Pull the trigger to drive the nail.
3. Remove your fi nger from the trigger and remove
the nailer from the wood.
The machine employs a preventive mechanism for
unloaded operation.
The machine enters a state where 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 or 9.
CAUTION
● Use caution not to throw the push lever tip onto
wood when the push lever cannot be pushed up.

METHODS OF OPERATION

This Nailer is equipped with the push lever and does not
operate unless the push lever is depressed.
There are two methods of operation to drive nails with this
Nailer.
They are:
1. Intermittent operation (Trigger fi re):
2. Continuous operation (Push lever fi re):
(1) Intermittent operation (Trigger fi re)
Use the FULL
MECHANISM setting.
● For intermittent operation, Set the nailing
operation switch to FULL SEQUENTIAL
ACTUATION MECHANISM (Nailing operation
indicator is light in blue.) (i.e. Set to SINGLE
ACTUATION MECHANISM.)
● To avoid double fi ring or accidental fi ring due
to recoil.
1) Set to FULL SEQUENTIAL ACTUATION
MECHANISM.
2) Pull the trigger rapidly and fi rmly.
English
SEQUENTIAL ACTUATION
WARNING
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