Maintenance And Service; Maintenance And Cleaning - Bosch Professional GBH 3-28 E Instructions D'emploi

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OBJ_BUCH-391-001.book Page 11 Thursday, May 3, 2007 9:19 AM
Setting the Speed/Impact Rate
The speed/impact rate of the switched on power tool
can be variably adjusted, depending on how far the
On/Off switch 7 is pressed.
Light pressure on the On/Off switch 7 results in low
speed/impact rate. Further pressure on the switch
increases the speed/impact rate.
Overload Clutch
If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted.
Because of the forces that occur, always hold
the power tool firmly with both hands and
provide for a secure stance.
If the power tool jams, switch the machine off
and loosen the tool insert. When switching
the power tool on with the drilling tool
jammed, high reaction torques can occur.

Maintenance and Service

Maintenance and Cleaning

Before any work on the power tool itself, pull
the mains plug.
For safe and proper working, always keep the
power tool and the ventilation slots clean.
A damaged dust protection cap should be
changed immediately. We recommend having
this carried out by an after-sales service.
Lubrication
The power tool is oil-lubricated. An oil change is
required only within the scope of maintenance or repair
through an authorized after-sales service agent for
Bosch power tools. In this, it is absolutely required to
use the specified Bosch oil.
If the power tool should fail despite the care taken in
manufacturing and testing procedures, repair should
be carried out by an after-sales service center for
Bosch power tools.
In all correspondence and spare parts orders, please
always include the 10-digit article number given on the
type plate of the power tool.
1 619 929 758 • 3.5.07
Service and Customer Assistance
Exploded views and information on spare parts can be
found under:
www.bosch-pt.com
In case of a claim, repair or purchase of replacement
parts or in case of queries or other problems, please
contact your local dealer or Bosch representative.
People's Republic of China
Website: www.bosch-pt.com.cn
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Service Hotline: . . . . . . . . . . . . . . . . . . 800 8 20 84 84
✆ . . . . . . . . . . . . . . . . . . . . . . . . +86 571 87 77 43 38
Fax . . . . . . . . . . . . . . . . . . . . . . . . +86 571 87 77 45 02
HK and Macau Special Administrative Regions
Melchers (H.K.) Ltd, Room 1210
Shun Tak Centre, West-Tower
168 – 200 Connaught Road, Central Hong Kong
Customer Service Hotline: . . . . . . .+852 25 89 15 61
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . .+852 25 48 79 14
E-Mail: bosch@melchers.com.hk
Indonesia
P. T. Multi Tehaka
Karang Anyar Permai Block B-24
Jl. Karang Anyar No. 55
Jakarta Pusat 10740
Indonesia
✆ . . . . . . . . . . . . . . . . . . . +62 21 6 59 52 22 (5 lines)
Fax . . . . . . . . . . . . . . . . . . . . . . . +62 21 6 59 52 52 – 3
sales@bosch.co.id
www.bosch.co.id
Phillippines
Robert Bosch, Inc.
Zuellig Building
Sen. Gil Puyat Avenue
Makati City 1200, Metro Manila
Philippines
✆ . . . . . . . . . . . . . . . . . . . . . . . . . . . +63 2 8 17 32 31
www.bosch.com.ph
Malaysia
Robert Bosch (SEA.) Pte. Ltd.
No. 8a, Jalan 13/6
Selangor Darul Ehsan
Petaling Jaya 46200
Malaysia
✆ . . . . . . . . . . . . . . . . . . . . . . . . . . +60 3 79 58 30 00
Fax (EW Dept.). . . . . . . . . . . . . . . . +60 3 79 58 38 38
www.bosch.com.sg
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