Bosch GBH 18V-28 C Professional Manual Original página 24

24 | English
possible to check the state of charge when the power tool is
not in operation.
Press the button for the battery charge indicator or
show the state of charge. This is also possible when the bat-
tery is removed.
If no LED lights up after pressing the button for the battery
charge indicator, then the battery is defective and must be
replaced.
The state of charge of the battery is also displayed on the
user interface Status indications.
Battery model GBA 18V...
LED
3× continuous green light
2× continuous green light
1× continuous green light
1× flashing green light
Battery model ProCORE18V...
LED
5 × continuous green light
4 × continuous green light
3 × continuous green light
2 × continuous green light
1 × continuous green light
1 × flashing green light
Recommendations for Optimal Handling of the
Battery
Protect the battery against moisture and water.
Only store the battery within a temperature range of −20 to
50 °C. Do not leave the battery in your car in the summer, for
example.
Occasionally clean the ventilation slots on the battery using a
soft brush that is clean and dry.
A significantly reduced operating time after charging indic-
ates that the battery has deteriorated and must be replaced.
Follow the instructions on correct disposal.
Assembly
Remove the battery from the power tool before carry-
u
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
1 609 92A 6J5 | (03.03.2023)
Inserting the Bluetooth® Low Energy Module
GCY 42 (Accessory)
to
Read the corresponding operating instructions for informa-
tion about the Bluetooth® Low Energy Module GCY 42.
Auxiliary handle
Do not operate your power tool without the auxiliary
u
handle (20).
Make sure that the auxiliary handle is always
u
tightened. Otherwise you could lose control of the power
tool when working.
Swivelling the auxiliary handle (see figure A)
You can swivel the auxiliary handle (20) to any angle for a
Capacity safe work posture that minimises fatigue.
– Turn the lower gripping end of the auxiliary handle (20)
60–100 %
anticlockwise and swivel the auxiliary handle (20) into
30–60 %
the required position. Then turn the lower gripping end of
5–30 %
the auxiliary handle (20) clockwise to retighten it.
Make sure that the retaining strap of the auxiliary handle
0–5 %
slots into the corresponding groove of the housing.
Selecting drill chucks and tools
Hammer drilling and chiselling require SDS-plus application
tools that are inserted into the SDS-plus drill chuck.
For drilling without impact in wood, metal, ceramic and
Capacity
plastic as well as for screwdriving, tools without SDS‑plus
80–100 %
are used (e.g. cylindrical shank drill bits). For these tools, a
60–80 %
keyless chuck or a keyed chuck are required.
40–60 %
Changing the drill chuck
20–40 %
Inserting/removing the keyed chuck
5–20 %
GBH 18V-28 C
0–5 %
You must use a suitable drill chuck (keyed or keyless chuck,
accessories) to work with tools that do not have SDS-plus
(e.g. cylindrical shank drill bits).
Fitting the keyed chuck (see figure B)
– Screw the SDS-plus shank (32) into a keyed chuck (31).
Secure the keyed chuck (31) using the securing screw
(30). Note that the securing screw has a left-hand
thread.
Inserting the keyed chuck (see figure B)
– Clean and lightly grease the insertion end of the shank.
– Insert the keyed chuck with the adapter shank into the
tool holder with a turning motion until it automatically
locks.
– Check that it is locked by pulling the keyed chuck.
Removing the keyed chuck
– Push the locking sleeve (5) back and remove the keyed
chuck (31).
Removing/inserting the quick-change chuck
GBH 18V-28 CF
Removing the Quick-Change Chuck (see figure C)
– Pull back on the quick-change chuck locking ring (6), hold
it in this position and pull the SDS plus quick-change
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