Maintenance And Inspection; Important - Hitachi WH 12DC Mode D'emploi

kg–cm
M8
1000
800
High tension bolt
600
400
200
Ordinary bolt
0
0 1 2
Tightening time: sec
(Steel plate thickness
t = 10 mm)
Fig. 6
Bolt
Nut

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit
Using a broken bit or one with a worn out tip is
dangerous because the bit can slip. Replace it.
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 may result in serious hazard.
3. Cleaning of the outside
When the impact driver 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 impact driver in a place in which the
temperature 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.
kg–cm
30
1000
800
600
400
200
3
Steel plate thickness t
Fig. 9
M10 30
High tension bolt
Ordinary bolt
0
0 1 2 3
Tightening time: sec
(Steel plate thickness
t = 10 mm)
Fig. 7
*The following bolt is used.
Ordinary bolt: Hardness division 4.8
High tensile bolt: Hardness division 12.9
(
Explanation of hardness division:
4 — Yield point of bolt: 32 kgf/mm
8 — Pulling strength of bolt: 40 kgf/mm

IMPORTANT

Correct connection of the plug
The wires of the mains lead are coloured in accordance
with the following code:
Blue:
Brown:
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.
Information concerning airborne noise and vibration
The measured values were determined according to
EN50144.
The typical A-weighted sound pressure level: 95 dB (A)
The typical A-weighted sound power level: 108 dB (A)
Wear ear protection.
The typical weighted root mean square acceleration
value: 6.5 m/s
kg–cm
M12
1000
High tension bolt
800
600
Ordinary bolt
400
200
0
0 1
Tightening time: sec
(Steel plate thickness
t = 25 mm)
Fig. 8
–Neutral
–Live
2
English
45
2 3
)
2
2
7