Operational Cautions; Maintenance And Inspection - Berner Bacis 14,4V Li Bedienungsanleitung

English
CAUTION:
The push button cannot be switched while the impact driver
is turning. To switch the push button, stop the impact driver,
then set the push button.
2. Switch operation
○ When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops.
○ The rotational speed 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
trigger switch is pulled more.
3. Change rotation speed
As shown in Fig. 7, when the rotation switch-over lever is
slid to the lower side, the power mode (P) is set. And when
slid to upper side, the save mode (S) is set.
Please use the save mode (S) when you want to lower
Maximum tightening torque.
CAUTION:
In the work of the save mode (S), avoid the continuous
screw-tightening as temperature of electronic components
of the converter switch increases.
4. Tightening and loosening screws
Install the bit that matches the screw, line up the bit in the
grooves of the head of the screw, then tighten it.
Push the impact driver just enough to keep the bit fitting
the head of the screw.
CAUTION:
Applying the impact driver for too long tightens the screw
too much and can break it.
Tightening a screw with the impact driver at an angle to that
screw can damage the head of the screw and the proper
force will not be transmitted to the screw.
Tighten with this impact driver lined up straight with the
screw.
5. Using the hook
The hook is used to hang up the power tool to your waist
belt while working.
CAUTION:
○ When using the hook, hang up the power tool firmly not to
drop accidentally.
If the power tool is dropped, it may lead to an accident.
○ When carrying the power tool with hooked to your waist
belt, do not fit any bit to the tip of power tool. If the sharp
bit such as drill is fitted to the power tool when carrying it
with hooked to your waist belt, you will be injured.
○ Install securely the hook. Unless the hook is securely
installed, it may cause an injury while using.
(1) Removing the hook.
Remove the screws fixing the hook with Philips screw
driver. (Fig. 8)
(2) Replacing the hook and tightening the screws.
Install securely the hook in the groove of power tool and
tighten the screws to fix the hook firmly. (Fig. 9)
6. About Remaining Battery Indicator
When pressing the remaining battery indicator switch,
the remaining battery indicator lamp lights and the
battery remaining power can be checked. (Fig. 10) When
releasing your finger from the remaining battery indicator
switch, the remaining battery indicator lamp goes off. The
Table 4 shows the state of remaining battery indicator
lamp and the battery remaining power.
23
State of lamp Battery Remaining Power
The battery remaining power is
enough.
The battery remaining power is a half.
The battery remaining power is nearly
empty.
Re-charge the battery soonest
possible.
As the remaining battery indicator shows somewhat
differently depending on ambient temperature and battery
characteristics, read it as a reference.
NOTE:
○ Do not give a strong shock to the switch panel or break it.
It may lead to a trouble.
○ To save the battery power consumption, the remaining
battery indicator lamp lights while pressing the remaining
battery indicator switch.
7. How to use the LED light
Every time you press the light switch on the switch panel,
the LED light lights or goes off. (Fig. 11)
To prevent the battery power consumption, turn off the
LED light frequently.
CAUTION:
○ Do not expose directly your eye to the light by looking into
the light.
If your eye is continuously exposed to the light, your eye
will be hurt.
NOTE:
○ To prevent the battery power consumption caused by
forgetting to turn off the LED light, the light goes off
automatically in about 15 minutes.

OPERATIONAL CAUTIONS

1. Resting the unit after continuous work
After use for continuous bolt-tightening work, rest the
unit for 15 minutes or so when replacing the battery. The
temperature of the motor, switch, etc., will rise if the work
is started again immediately after battery replacement,
eventually resulting in burnout.
NOTE:
Do not touch the protector, as it gets very hot during
continuous work.
2. Cautions on use of the speed control switch
This switch has a built-in, electronic circuit which steplessly
varies the rotation speed. Consequently, when the switch
trigger is pulled only slightly (low speed rotation) and the
motor is stopped while continuously driving in screws, the
components of the electronic circuit parts may overheat
and be damaged.

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.
Table 4