Bosch GHG 20-63 Professional Manual Original página 14

14 | English
If you reduce the temperature, it takes a little while
u
for the power tool to cool down.
The lowest airflow setting is suitable for cooling down a
heated workpiece or for drying paint. It is also suitable for
cooling down the power tool before putting it down or chan-
ging the attachment nozzles.
Regulating airflow (GHG 23-66)
In switch position 1 on the on/off switch (4), you can adjust
the airflow in ten increments between 150 and 300 l/min. In
switch position 2, you can adjust the airflow in ten incre-
ments between 150 and 500 l/min.
Alternatively, you can used the saved airflow/temperature
combinations (see "Saving airflow/temperature combina-
tions (GHG 23-66)", page 14).
The set airflow is displayed with the ten bar segments (9) at
the lower edge of the display.
Switch position l/min
1 150–300
2 150–500
To adjust the airflow, first press the fan button (10). The fan
symbol (8) in the display flashes. The airflow can now be
regulated with the airflow control button (12).
To increase the airflow, press + on the (12) button; to de-
crease the airflow, press −.
If you wish to adjust the temperature again using the
(12) button, press the fan button (10) again. The fan sym-
bol (8) in the display stops flashing.
If you move from switch position 1 to position 2, the airflow/
temperature combination last used in position 2 is set.
Reduce the airflow, for instance, if the area surrounding a
workpiece cannot tolerate excessive heat or if a workpiece is
light enough that the airflow might move it.
Regulating temperature (GHG 23-66)
In switch position 1 on the on/off switch (4), the temperat-
ure is fixed at 50 °C. In switch position 2, you can adjust the
temperature between 50 and 650 °C.
Alternatively, you can used the saved airflow/temperature
combinations (see "Saving airflow/temperature combina-
tions (GHG 23-66)", page 14).
The set temperature is shown in the display (13).
Switch position °C
1 50
2 50–650
To increase the temperature, press + on the (12) button; to
decrease the temperature, press −.
Briefly pressing the (12) button increases or decreases the
temperature by 10 °C. Pressing and holding down the button
continuously increases or decreases the temperature by
10 °C until the button is released or the maximum/minimum
temperature is reached.
1 609 92A 4UE | (04.02.2019)
The set target temperature is shown in the display for three
seconds. The actual temperature at the nozzle output is dis-
played and the unit of measure for the temperature (6)
flashes until the target temperature is reached. The unit of
measure for the temperature stops flashing once the target
temperature is reached.
If you reduce the temperature, it takes a little while
u
for the power tool to cool down.
Switch setting 1 is suitable for cooling down a heated work-
piece or for drying paint. It is also suitable for cooling down
the power tool before putting it down or changing the attach-
ment nozzles.
Saving airflow/temperature combinations (GHG 23-66)
You can save four airflow/temperature combinations or ac-
cess four saved preset combinations.
To do this, the on/off switch (4) must be set to switch posi-
tion 2.
°C
Factory settings
50
Memory
50–650
preset
A)
0
1
2
3
4
A) Not shown in the display
To call up a combination, keep pressing the memory button
(11) until the number you want appears in the display (5).
To save your own combination:
– Press the memory button (11) to select the memory pre-
set you want.
– Set the desired temperature and airflow. The memory
preset (5) flashes to indicate that the saved combination
has been changed.
– Press and hold down the memory button (11). The
memory preset (5) flashes for around two seconds. When
it lights up continuously, the new combination has been
saved.
Practical advice
l/min Pull the plug out of the socket before carrying out any
u
work on the power tool.
150–300
Note: Do not position the nozzle (1) too close to the work-
150–500
piece that you are using the power tool on. The resulting
build-up of air can cause the power tool to overheat.
Removing the heat shield
When working in particularly tight spaces, you can remove
the heat shield (2) by turning it.
Caution: Nozzle is hot! Working without the heat shield
u
increases the risk of burns.
Always switch the power tool off and allow it to cool before
removing or attaching the heat shield (2).
°C l/min Application
50 150 – Cooling down a workpiece
– Drying paint
250 350 Shaping plastic pipes
350 400 Welding plastic
450 500 Removing varnish
550 400 Soft soldering
Bosch Power Tools