Bosch GNF 65 A Professional Manual Original página 18

OBJ_BUCH-1725-002.book Page 18 Friday, August 26, 2016 3:12 PM
18 | English
Observe the relevant regulations in your country for the
materials to be worked.
The vacuum cleaner must be approved for the extraction of
masonry dust. Bosch provides suitable vacuum cleaners.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
The machine can be plugged directly into the receptacle of a
Bosch all-purpose vacuum cleaner with remote starting con-
trol. The vacuum cleaner starts automatically when the ma-
chine is switched on.
Mount the elbow 11 onto the vacuum connection 10 and con-
nect a vacuum hose 12 (accessory). Connect the vacuum
hose 12 with a vacuum cleaner (accessory). An overview for
the connection of various vacuum cleaners can be found at
the end of these instructions.
Information for the Use of Wall Chasers
Please observe the following notes in order to reduce the dust
emissions occurring while working.
– Use only the combinations of wall chaser and dust-
category M vacuum cleaner recommended by Bosch. Oth-
er combinations can lead to insufficient dust collection and
separation.
– Observe the operating instructions of the vacuum cleaner
for maintenance and cleaning of the vacuum cleaner, in-
cluding the filter. Empty dust collection containers imme-
diately once full. Clean the filters of the vacuum cleaner
regularly and always insert the filters completely into the
vacuum cleaner.
– Only use vacuum hoses as intended for by Bosch. Do not
manipulate the vacuum hose. When rocks or chunks of
stone/masonry are drawn into the vacuum hose, cease
work and clean the vacuum hose immediately. Prevent the
vacuum hose from being bent or creased.
– Use the wall chaser only according to its intended use.
– Only use tools that are in perfect condition. Decrease in
work progress is noticeable whilst using worn tools.
– Observe the general requirements for construction sites.
– Provide for good ventilation.
– Ensure that the working range/area is free of obstructions.
For longer slots, the vacuum cleaner must be guided along
in time, without obstructions in the path.
– Wear hearing protection, protective goggles, dust mask
and gloves as required. As dust mask, use at least a parti-
cle-filtering class FFP 2 half-mask.
– Use a suitable vacuum cleaner for cleaning the workplace.
Prevent settled dust from being swirled up by sweeping.
Adjusting the Protection Guard
The protection guard 8 can be adjusted within limits.
Loosen clamping lever 14 and turn the protection guard 8 ac-
cording to the working conditions. Pay attention not to misad-
just screw 13.
Afterwards, tighten the protection guard 8 with clamping le-
ver 14 again.
1 609 92A 2PN | (26.8.16)
Mounting the Auxiliary Handle
Depending on the working manner, screw the auxiliary handle
4 to the right or left on the auxiliary-handle holder.
After loosening locking screw 6, the auxiliary-handle holder
can be adapted to the respective working position in 30°
steps.
When tightening locking screw 6, take care that the four posi-
tioning pins on the auxiliary-handle holder are seated in the
holes of the protection guard 8.
Mounting Diamond Cutting Discs
 Before any work on the machine itself, pull the mains
plug.
 When mounting and replacing diamond cutting discs, it
is recommended to wear protective gloves.
 Diamond cutting discs become very hot during opera-
tion; do not touch them until they have cooled down.
 Use only diamond-tipped cutting discs. Segmented dia-
mond wheels may only have negative cutting angles
and slots between the segments to a maximum of
10 mm.
Place the power tool on its side so that the cutting-depth scale
2 can be seen.
Loosen clamping lever 9 and adjust the least cutting depth.
Dismounting the Clamping Assembly (see figure A)
Press the spindle lock button 7 to lock the grinding spindle.
 Actuate the spindle lock button only when the grinder
spindle is at a standstill. Otherwise, the machine may be-
come damaged.
Loosen the clamping nut 19 with the two-pin spanner 20 and
unscrew the clamping nut 19. Remove the spacer discs 18
and the mounting flange 16.
Clean the grinder spindle 15 and all parts to be mounted.
Determining the Slot Width
The slot width results from the amount of spacer discs 18 be-
tween the two diamond cutting discs 17 and the cutting width
of the diamond cutting discs.
The slot width is calculated as follows:
Slot width = Thickness of the spacer discs + width of the dia-
mond cutting discs.
The allowable slot width is shown in the section "Technical
Data".
The machine can be operated with one or two diamond cut-
ting discs.
Mounting the Clamping Assembly (see figure A)
Set the mounting flange 16 onto the grinder spindle 15. The
mounting flange with its driving feature must be properly
seated on the grinding spindle.
Place the diamond cutting disc 17 and the spacer discs 18 on
the mounting flange 16.
 Regardless of the requested slot width, all spacer discs
18 provided must always be mounted. Otherwise, the di-
amond cutting disc 17 can become loose during operation
and lead to injuries.
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