Bosch Professional GHG 500-2 Notice Originale page 8

OBJ_BUCH-1364-003.book Page 8 Monday, November 28, 2016 10:41 AM
8 | English
In the cold air setting I, the temperature is fixed at 50 °C; in
the hot air settings II and III, the temperature can be continu-
ously regulated.
Setting the Temperature (GHG 630 DCE)
The temperature can only be regulated in the hot air settings
II and III. In the cold air setting I, the temperature is fixed at
50°C.
When switching from the cold air setting I to one of the hot air
settings, the last set target temperature is indicated for ap-
prox. 3 seconds between flashing arrows on display 7. The
target temperature is the same for both hot air steps II and III,
and does not change when switching between the two steps.
To increase the temperature, press on the "+" of the temper-
ature-control button 6, to decrease the temperature, press on
the "–".
Briefly pressing the temperature-control button 6 at the re-
spective position increases or decreases the temperature by
10 °C. Prolonged pressing of the temperature-control button
continuously increases or decreases the temperature by
10 °C, until the button is released or the maximum or minimal
temperature is reached.
After a change to the temperature setting, the power tool re-
quires a short period to warm up or cool down the air flow.
During this period, the target temperature is indicated be-
tween the flashing arrows in the display 7. When the target
temperature is reached, the arrows go out and the display in-
dicates the actual temperature.
When switching from the hot air steps II or III to the cold air
setting I, a short time is required until the power tool has
cooled to 50 °C. During the cooling period, the actual temper-
ature at the nozzle outlet is indicated on the display 7.
The cold air setting I is suitable for cooling a warmed work-
piece or for drying of paint. It is also suitable for cooling the
power tool before placing it down or when changing nozzles.
Working Advice
 Before any work on the machine itself, pull the mains
plug.
Note: Do not apply the nozzle 1 too close to the workpiece be-
ing worked. The hot air build-up can lead to overheating of the
power tool.
Removing the Heat Protection
The heat protection collar 2 can be removed when working at
particularly hard-to-reach locations.
 Be careful of the hot nozzle! Increased danger of burning
exists when working without the heat protection collar.
To remove or mount the heat protection collar 2, switch the
power tool off and allow it to cool down.
To speed up the cooling, the power tool can also be operated
for a short period with the lowest adjustable temperature.
Turn the heat protection collar 2 in anticlockwise direction to
remove and in clockwise direction to mount again.
1 609 929 3AM | (28.11.16)
Placing Down the Power Tool (see figure C)
To cool down the power tool or have both hands free, place it
down on the standing surface 3.
 Be especially careful when working with the placed
down power tool! There is danger of burning oneself on
the hot nozzle or on the hot air jet.
Work Examples
The figures of the application examples can be found on the
graphics pages.
The temperature settings in the work examples are reference
values that can vary, depending on the material characteris-
tics. The distance between the nozzle and the workpiece de-
pends on the material to be worked.
The optimal temperature for the respective application can be
determined by practical testing. Always start with a low tem-
perature setting.
All application examples can be performed without accesso-
ries except for "Removing Varnish/Paint from Windows".
However, the use of recommended accessories simplifies the
work and significantly improves the quality of the result.
 Be careful when changing the nozzle! Do not touch the
hot nozzle. Allow the power tool to cool down and wear
protective gloves while changing the nozzle. Danger of
burning oneself on the hot nozzle.
Removing Varnish/Softening Adhesives (see figure A)
Mount the wide jet nozzle 8 (accessory). Briefly soften the
varnish applying hot air and remove it using a sharp, clean
scraper or putty knife. Applying heat too long will burn the var-
nish, making it more difficult to remove.
Many adhesives (e.g. of stickers) become soft when heated.
Heated adhesives allow for bonds to be separated or exces-
sive adhesive to be removed.
Removing Varnish/Paint from Windows (see figure B)
 Use of the glass protection nozzle 9 (accessory) is
essential. Danger of glass breaking.
On profiled surfaces, varnish can be removed using an appro-
priately fitting spatula and brushed off with a soft wire brush.
Shaping Plastic Tubing (see figure C)
Mount the reflector nozzle 10 (accessory). To avoid kinking of
the tubing, fill the tubing with sand and plug both ends. Heat
the tubing evenly by by applying the heat from side to side.
Welding Plastics (see figure D) (GHG 630 DCE)
Mount the reduction nozzle 13 and the welding shoe 12 (both
accessories). The workpieces to be welded and the welding
rod 11 (accessory) must be of the same material (e.g. both of
PVC). The seam must be clean and grease-free.
Carefully heat up the seam location until it becomes doughy.
Please note that the temperature difference between the
doughy and liquid state of plastic is low.
Feed in the welding rod 11 and allow it to run into the gap so
that a uniform bead is produced.
Bosch Power Tools