Operation – Bosch GHG 660 LCD Professional User Manual

Page 13

English | 13

Bosch Power Tools

1 609 929 W90 | (14.5.12)

Technical Data

Operation

Starting Operation

Observe correct mains voltage! The voltage of the pow-

er source must agree with the voltage specified on the

nameplate of the machine. Power tools marked with

230 V can also be operated with 220 V.

Switching On and Off
To switch on the power tool, push the On/Off switch 3 to the

position (see “Cool-air Stage”, page 14) or (see “Hot-air

Stage”, page 14).
In both positions, the power tool will start with the previous

set air-flow and temperature values.
To switch off, push the On/Off switch 3 to the stop in position

“0”.
After working for a longer period at a high temperature, oper-

ate the power tool for a short period in the cool-air stage

before switching off.
Thermal-protection shut-off: In case of overheating (e.g.

due to air build-up), the power tool automatically shuts off the

heating system, but the blower will continue to run. When the

power tool has cooled down to the operating temperature,

the heating system is automatically switched on again.
When not using the power tool, switch it off in order to save

energy.
Regulating the Air flow
The air flow can be regulated with the air-flow control button 8:

To increase the air flow, press on the “+” of the air-flow con-

trol button 8, to decrease the air flow, press on the “–”.
Briefly pressing the air-flow control button 8 at the respective

position increases or decreases the air flow by one step. Pro-

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.

Hot Air Gun

GHG 660 LCD

Article number

0 601 944 7..

Rated voltage

220–240

110–120

Rated power input

2300

1400

Air flow

l/min

250–500

Temperature at the nozzle outlet (approx.)

°C

50–660

50–600

Temperature-measuring accuracy

– at the nozzle outlet

– on the display

±5 %

Display operating temperature*

°C

–20...+70

Weight according to EPTA-Procedure 01/2003

1.0

Protection class

/II

* The display can turn black when not within the operating temperature.

Minimal air flow
Maximum air flow

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