Hitachi DS 14DSFL Technical Data And Service Manual page 5

22-position torque adjustable clutch (Max. clutch torque: 6.0 N•m)
The 22-position torque adjustable clutch ensures fine torque adjustment for better operability.
Clutch dial position
* There may be some differences in operation depending on shapes of screws and the
workpieces used.
Conduct a test before actual driving.
Soft-grip handle
The handle is widely covered with soft-touch elastomer (rubber-like soft resin). It is slip-resistant and
securely fits in the palm of a hand even if the gripping hand sweats.
Safe and secure lithium-ion batteries
The new 1.5 Ah Types BSL 1415 and BSL 1815 Lithium-ion Batteries were developed for light-duty work.
Both batteries are equipped with an overdischarge protection circuit, overload protection circuit, overheat
protection circuit and voltage monitoring circuit for each cell to prevent reduced battery service life due to
overdischarge (overuse) or overcharge (excessive charging). These protection circuits make it possible to
safely use the batteries.
Precautions on using the Types BSL 1415 and BSL 1815 Lithium-ion Batteries
The Types BSL 1415 and BSL 1815 Lithium-ion Batteries are both equipped with a protective function that
automatically stops output to prolong battery service life. The motor may stop automatically in any of cases
(1), (2) and (3) below, even if the switch is held down during operation. This is due to activation of the
protective function. The batteries are not faulty.
Protective function
Overdischarge
(1)
protection circuit
Overload
(2)
protection circuit
Overheat
(3)
protection circuit
1
4
10
13
19
22
Source of trouble
Drop in battery voltage to about:
8 V/BSL 1415
10 V/BSL 1815
Heavy-duty work
Continuous operation
or heavy-duty work
Tightening torque
1.0 ± 0.5 N m {10 ± 5 kgf
•
1.7 ± 0.6 N m {17 ± 6 kgf
•
3.1 ± 0.7 N m {31 ± 7 kgf
•
3.8 ± 0.8 N m {38 ± 8 kgf
•
5.3 ± 0.9 N m {53 ± 9 kgf
•
6.0 ± 1.0 N m {60 ± 10 kgf
•
(Types BSL 1415 and BSL 1815)
Charge the battery immediately.
Release the switch and eliminate
the cause of the overload problem.
Remove the battery from the tool
and allow it to cool down.
-2-
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Corrective action