Bosch GHG 660 LCD - Инструкция по эксплуатации - Страница 14

14

 | English 

1 609 92A 0LZ | (14.3.14)

Bosch Power Tools

longed pressing of the air-flow control button continuously in-
creases or decreases the air flow until the button is released, 
or the maximum or minimal air flow is reached.

As an example, reduce the air flow when the surrounding area 
of a workpiece is not to be heated excessively or when a light 
workpiece could be moved away by the air flow.

Setting the Temperature

The temperature can only be regulated in the hot-air stage  .

To increase the temperature, press on the 

“+”

 of the temper-

ature-control button 

9

, to decrease the temperature, press on 

the 

“– ”

.

Briefly pressing the temperature-control button 

9

 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.

Activating/Deactivating the Button Lock (“LOC”)

To prevent accidental changing of the air flow and tempera-
ture   the function of buttons 

6

, 

8

, 

9

 and 

10

 can be locked 

when in the hot-air stage. In the cool-air stage 

 the air flow 

can be changed even when the button lock is activated.

Activating the Button Lock:

Switch the power tool on while in the hot-air stage  . Adjust 
the air-flow and temperature settings to be locked.

Switch the power tool off.

Press and hold the save button 

10

 and switch the power tool 

on again (in cool-air or hot-air stage). The display 

7

 will indi-

cate 

“OFF”

 for the deactivated button lock.

With the save button 

10

 still held, press one after the other:

–

“+”

 on the temperature-control button 

9

,

–

“+”

 on the air-flow control button 

8

,

–

“– ”

 on the temperature-control button 

9

,

–

“– ”

 on the air-flow control button 

8

.

The display indicates 

“ON”

. Release the save button 

10

.

The button lock is now activated. The preset values for tem-
perature and air flow are indicated in the hot-air stage  . After 
pushing any button, 

“LOC”

 is indicated in the display and the 

values cannot be changed.

Deactivating the Button Lock:

Switch the power tool off. Push and hold the save button 

10

and switch the power tool on again. The display indicates 

“ON”

 for the activated button lock. Push the temperature but-

ton 

9

 and the air-flow control button 

8

 in the same sequence 

as when activating the button lock. The display indicates 

“OFF”

 for the deactivated button lock.

Operating Modes

Cool-air Stage

The air flow can be regulated, the temperature 
is set to 50 ° C (cannot be regulated), and pro-
gramming operation is not possible.

The cool-air stage 

 is suitable for cooling down a heated-up 

workpiece or for drying paint. It is also suitable for cooling down 
the power tool before placing it down or changing nozzles.

When changing from the hot-air stage   with higher tempera-
tures, it will take a few moments until the power tool has 
cooled down to 50 ° C. During cooling down, the display 

7

 in-

dicates the actual temperature at the nozzle outlet.

When changing from the hot-air stage   to the cool-air stage 

, the current air-flow settings are taken over.

Hot-air Stage

The air flow and temperature can be regulated; 
normal and programming operation are possi-
ble.

When changing from the cool-air stage 

 to the hot-air stage 

, the air flow, temperature and possibly the program are au-

tomatically adjusted according to the settings of the last hot-
air stage operation.

Programming Operation

In programming operation, it is possible to continuously store 
the air-flow and temperature adjustments in four programs. 
Each program allows for different air-flow and temperature 
combinations.

In progamming operation, it is also possible to change the air 
flow and temperature any time. When the changes are not 
saved, they are lost after switching off or changing to a differ-
ent program.

To change to programming operation, press the program-
selection button 

6

 until the number of the requested program 

is indicated in the display 

7

.

The following four programs are preset in the condition of 
delivery:

To change a set program, switch to this program by pressing 
the program-selection button 

6

. Set the requested air flow 

and temperature with the air-flow control button 

8

 and the 

temperature-control button 

9

.

Program

Application

Temperature 

in °

C

Air Flow

1

Deforming plastic tubing (e. g. LDPE)  250

2

Welding plastic (e. g. PVC) 

350

3

Removing Varnish/
Softening Adhesives

450

4

Soldering

550

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