Maintenance And Cleaning - Bosch GWS 20-180 Professional Operating Instructions Manual

For cutting especially hard material, e. g., con-
crete with high pebble content, the diamond cut-
ting disc can overheat and become damaged as
a result. This is clearly indicated by circular
sparking, rotating with the diamond cutting disc.
In this case, interrupt the cutting process and al-
low the diamond cutting disc to cool by running
freely at no-load speed for a short time.
Noticeable decreasing work progress and circu-
lar sparking are indications of a diamond cutting
disc that has become dull. Briefly cutting into
abrasive material (e. g., lime-sand brick) can re-
sharpen the disc.
Rotating the Machine Head
Before any work on the machine itself, pull
the mains plug.
with the cutting guide 25/cutting grinder stand 26
(accessory) or for left-handed persons.
Unscrew completely the four screws.
Rotate the machine head carefully and without
removing from the housing to the new position.
Screw in the screws again and tighten.

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and the ventilation slots clean.
In extreme working conditions, conductive
dust can accumulate in the interior of the
machine when working with metal. The
protective insulation of the machine can be
degraded. The use of a stationary extrac-
tion system is recommended in such cases
as well as frequently blowing out the venti-
lation slots and installing a residual current
device (RCD).
13 • 1 609 929 F75 • 04.03
The machine head
can be rotated with
respect to the ma-
chine housing in 90°
steps. In this man-
ner, the On/Off
switch can be
brought to an advan-
tageous handling
position for special
working situations,
e. g., for cutting work
English - 8
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts orders,
please always include the 10-digit order number
given on the nameplate of the machine.
Service and Customer
Assistance
Exploded views and information on spare
parts can be found under:
www.bosch-pt.com
Southern India
Bosch Service Center
No 49, Ethiraj Salai
Egmore Chennai 600 008
..............................................
Fax:
...........................................
Western India
Bosch Service Center
No 41, 41 A Appa Baug Building
Maharshi Karve Marg (opp. Charni Road Station )
Mumbai 400 002
..............................................
Fax:
...........................................
Northern India
Bosch Service Center
Rishyamook, 85 A
Panchuin Road Delhi 110 001
..............................................
Fax:
...........................................
Subject to change without notice
+91 (0)44 - 28 23 19 46
+91 (0)44 - 28 27 93 55
+91 (0)22 - 22 01 46 49
+91 (0)22 - 22 08 40 05
+91 (0)11 - 23 34 82 64
+91 (0)11 - 23 34 82 64