Working Instructions - Bosch GHG 660 LCD PROFESSIONAL Bedienungsanleitung

Setting the Air Flow
The air flow can be regulated with the air flow button 7.
Minimum air flow (approx. 250 l/min)
Maximum air flow (approx. 500 l/min)
The air flow can be increased by pressing the "+" side
of the air flow button 7 or decreased by pushing the "–"
side of the button 7. Brief pressing of the button in-
creases or decreases the air flow by one step. Longer
pressing of the button increases or decreases the air
flow continuously until the maximum or minimum air flow
is reached.
Decrease the air flow when, for example:
– The surroundings of the work piece should not be
heated more than necessary
– A light work piece could be blown away by the air
stream.
Setting the Temperature
The temperature in the hot air setting
lated.
For changes to another temperature, the unit needs a
short time to warm or cool the air stream to the target
temperature. The target temperature is shown in the
display 6 during this time with blinking arrows
After reaching the required temperature, the arrows
are eliminated and the display 6 shows the actual
temperature.
The target temperature can be increased in steps of
10 °C by pressing the "+" side of the temperature but-
ton 8 or reduced by pressing the "–" side of the button
8. Brief pressing of the button increases or decreases
the target temperature one time by 10 °C. Longer
pressing of the button increases or decreases the
temperature continuously by 10 °C steps until the but-
ton is released or the minimum or maximum tempera-
ture is reached.
Operating Modes
Programmed Operation
In programmed operation, air flow and temperature
settings can be stored in four programs. In each pro-
gram, any air flow and temperature combination is
possible.
Also in programmed operation, air flow and tempera-
ture can be changed at any time. If the changes are
not stored, they are lost when switching off or when
changing to another program.
To change to the programmed mode, press the pro-
gram selection button "P" 5 until the number of the re-
quired program ( ,
play.
1 609 929 F39 • (03.10) T
can be regu-
, or ) is shown in the dis-
Pre-Stored Programs
The unit is delivered with the following four programs:
Application
Shaping of plastic
tubing (e.g. LDPE)
Welding of plastic
(e.g. PVC)
Removing paint/
softening adhesives
Soldering
Changing of Programs
Press the program selection button "P" 5 until the
number of the program to be changed is shown in the
display. Set the required temperature and air flow (see
Sections Setting the Air Flow and Setting the Temper-
ature). As soon as the values of the program are
changed, the symbol
display.
After setting the required air flow and temperature,
hold the store button
in the display disappears. The values set are now
stored under the program number shown in the dis-
play.
.
Normal Operation
To change to normal operation, press the program se-
lection button "P" 5 repeatedly until there is no longer
a program number shown over the temperature in the
display.
The air flow and temperature can now be changed at
any time.
The last set values for the air flow and temperature re-
main stored under the following conditions:
– Change to program operation
– Change to the cold setting
– Switch-off of the unit.

Working Instructions

Removing the Heat Protector
For working in especially narrow places, the heat pro-
tector 2 can be removed.
Be careful of the hot nozzle! Increased danger
s
of burning exists when working without the heat
protector.
To remove or mount the heat protector, the unit must
be switched off and have cooled. For cooling, run
briefly in the cold setting, if necessary.
Turn the heat protector 2 counter clockwise to remove
and clockwise to mount again.
English–3
Temperature Air Flow
250 °C
350 °C
450 °C
550 °C
blinks in the upper left of the
9 depressed until the symbol