Practical Advice - Bosch GHG Professional 20-63 Notice Originale

14 | English
Setting Switch position
Work stage
A) The temperature is automatically set in the range of 50−100 °C,
depending on the selected air current.
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
symbol (8) in the display stops flashing.
When you switch from the cooling stage to the work stage,
the airflow/temperature combination set is the one most re-
cently used in the work stage.
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 the cooling stage, the temperature is automatically set
between 50 °C and 100 °C. In the work stage, you can set
the temperature between 50 °C and 650 °C.
Alternatively, you can use saved airflow/temperature com-
binations (see "Saving Airflow/Temperature Combinations
(GHG 23-66)", page 14).
The set temperature is shown in the display (13).
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.
The set target temperature is shown in the display for 3 s.
The actual temperature at the nozzle output is displayed 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.
When you reduce the temperature, it does not take
u
long for the heat gun to cool down.
The cooling stage is suitable for cooling down a heated work-
piece or for drying paint. It is likewise suitable for cooling
down the heat gun before turning off or replacing the attach-
ment nozzles.
Saving Airflow/Temperature Combinations (GHG 23-66)
You can save 4 airflow/temperature combinations or have
access to 4 saved combinations ex works.
For this, the on/off switch (4) must be at the work stage.
Factory settings
Memory °C l/min Application
preset
1 250 350 Shaping plastic pipes
1 609 92A 52W | (13.09.2021)
l/min °C Factory settings
150−500 50−650 Memory
preset
2
3
4
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 approx. 2 s. When it lights
up continuously, the new combination has been saved.

Practical advice

Pull the mains plug out of the plug socket before car-
u
rying out any work on the heat gun.
Note: Do not position the nozzle (1) too close to the work-
piece that you are using the power tool on. The resulting air
blockage can lead to the heat gun overheating.
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.
To remove or put on the heat shield (2), switch the heat gun
off and let it cool down.
To cool down faster, you can also let the heat gun run briefly
at the lowest temperature that can be set.
Turning off the heat gun
Put down the heat gun on the storage surfaces (3) to let it
cool down, or to keep both hands free to work.
Be especially careful when working with the turned-
u
off heat gun! The heat from the nozzle or the air flow can
cause burns.
Position the heat gun on an even, stable surface. Ensure that
it cannot tip over. Secure the cable outside your work area
so that it cannot knock down or pull down the heat gun.
Switch the heat gun off if not used for a sustained period of
time, and disconnect from the mains.
Example applications (see figures A–G)
Images of example applications can be found on the graphics
pages.
The distance between the nozzle and the workpiece de-
pends on the material you are working on (metal, plastic
etc.) and the intended working method.
°C l/min Application
350 400 Welding plastic
450 500 Removing varnish
550 400 Soft soldering
Bosch Power Tools