Bosch Professional GCM 18V-305 GDC Original Instructions Manual page 43

– Push the charged battery (31) into the battery bay of the
power tool until the battery is securely locked.
Switching on (see figure L)
– To switch on the power tool, first slide the lock-off but-
ton (2) to the middle and then press and hold the on/off
switch (64).
Note: For safety reasons, the on/off switch (64) cannot be
locked; it must remain pressed during the entire operation.
Switching off
– To switch off, release the on/off switch (64).
Starting current limitation
The electronic starting current limitation feature restricts the
power of the power tool when it is switched on and enables
operation using a 16 A fuse.
Speed preselection
An ECO mode and three speed settings are preset.
You can use the button for speed preselection (47) to
preselect the required speed, even during operation.
Speed setting Speed [min
2550
Eco
Status indications
Battery charge indicator Meaning/cause
(user interface) (45)
Green (2 to 5 bars) Battery charged
Yellow (1 bar) Battery almost empty
Red (1 bar) Battery empty
Temperature indicator (51) Meaning/cause
Yellow Critical temperature has been reached (mo-
tor, electronics, battery)
Red Power tool is overheated and will switch off
Smartphone indicator(49) Meaning/cause
and Power tool status indic-
ator (50)
Yellow Service reminder
Power tool status indic- Meaning/cause
ator (50)
Green Status OK
Yellow Critical temperature has been reached or bat-
tery is almost empty
Red Power tool is overheated or battery is empty
Flashing red Restart protection is triggered
Bosch Power Tools
Note: If the power tool runs at full speed immediately after
being switched on, this means that the starting current limit-
ation and restarting protection mechanisms have failed. The
power tool should be sent immediately to an after-sales ser-
vice.
ECO mode
If the power tool is operated in the energy-saving ECO mode,
the battery life may be up to 20% longer.
If the ECO mode is active, the symbol E is shown on the
speed setting/mode indicator (48). In addition, the ECO
mode indicator (46) lights up.
User interface
The user interface (3) is used to preselect the speed and to
indicate the status of the power tool.
Speed setting
1
-1
]
2
3
-1
Speed [min ]
3000
3500
4000
Solution
–
Replace or charge battery soon
Replace or charge battery
Solution
Run the power tool at no load and allow it to
cool down
Leave the power tool to cool down
Solution
For more information see Bosch Toolbox App
or Service
Solution
–
Run the power tool at no load and allow it to
cool down, or replace or charge the battery
soon
Allow the power tool to cool down, or replace
or charge the battery
Turn the power tool off and on again; if neces-
sary, remove the battery and reinsert it.
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