Maintenance And Inspection - Hitachi DN 7DT Instrucciones De Manejo

English
If the motor is locked, immediately turn the power
off.
If the motor is locked for a while, the motor or
battery may be burnt.
A buzzing noise is produced when the motor is
about to rotate. This is only a noise, not a machine
failure. (DN7DV only.)
1. Switch operation
When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops. (Fig.
8)
The rotational speed of the drill can be controlled
by varying the amount that the trigger switch is
pulled. Speed is low when the trigger switch is
pulled slightly and increases as the switch is pulled
more. (DN7DV only).

MAINTENANCE AND INSPECTION

1. Inspecting the tool
Since use of a dull tool will degrade efficiency and
cause possible motor malfunction, sharpen or re-
place the tool as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Fail-
ure to do so could result in serious hazard.
3. Cleaning on the outside
When the driver drill is stained, wipe with a soft
dry cloth or a cloth moistened with soapy water.
Do not use chloric solvents, gasoline or paint thin-
ner, for they melt plastics.
4. Storage
Store the driver drill in a place in which the tem-
perature is less than 40°C and out of reach of
children.
NOTE
Due to HITACHI's continuing program of reserch and
development, the specifications herein are subject to
change without prior notice.
This appliance is produced to conform to the require-
ments of B. S. 800: 1977*.
* This requirement is applicable to appliances for
UNITED KINGDOM.
6
IMPORTANT
Correct connection of the plug
The wires of the mains lead are coloured in accordance
with the following code:
Blue: –Neutral
Brown: –Live
As the colours of the wires in the mains lead of this
tool may not correspond with the coloured markings
identifying the terminals in your plug proceed as fol-
lows:
The wire coloured blue must be connected to the
terminal marked with the letter N or coloured black.
The wire coloured brown must be connected to the
terminal marked with the letter L or coloured red.
Neither core must be connected to the earth terminal.
NOTE
This requirement is provided according to BRITISH
STANDARD 2769: 1984.
Therefore, the letter code and colour code may not be
applicable to other markets except United Kingdom.
The noise emitted by this power tool is measured in
accordance with IEC 59 (CO) 11, IEC 704, DIN 45 635
Part 21, NFS 31-031 (84/537/EEC for concrete breakers).
The sound pressure level at the workplace can exceed
85 dB (A); in this case noise protection for the operator
is required.