Maintenance And Service; Maintenance And Cleaning - Bosch GTR Professional 550 Notice Originale

Cause Corrective measure
Reduce the speed.
The removal rate of the material to be machined is too
high.
The drywall sander's speed is Reduce the speed.
too high.
The suction effect on the dry- Reduce the suction effect or
wall sander is too strong. switch to external dust ex-
traction.
The bodyfiller material has a Switch on the external dust
high proportion of filler or is extraction, set the suction
very soft. power thumbwheel to set-
ting 6 and, in extreme cases,
reduce the speed.
The grit of the abrasive is too Use a sanding sheet with a
coarse. finer grit.
The surface quality is not optimal.
The grit of the abrasive is too Use a sanding sheet with a
coarse. finer grit.
The drying times for the Refer to the technical inform-
bodyfiller material have not ation sheets and manufac-
been observed. turer's recommendations.
The suction effect is too Reduce the suction power.
strong.
The bodyfiller material has a Use a sanding sheet with a
high proportion of filler or is finer grit.
very soft.
The running power tool has Position the power tool be-
been positioned on the sur- fore switching it on.
face (scoring).
Work on the surface and al-
ways work with the remov-
able brush segment.
There are sanding marks on the surface.
The hard sanding pad has Use a soft sanding pad with
been positioned at an angle an intermediate pad.
on the surface.
In the case of very soft body- Use a soft sanding pad with
filler material, the sanding an intermediate pad.
pad is too hard or the grit of
Choose a finer abrasive grit.
the abrasive is too coarse.
The suction effect is insufficient.
The suction power on the Increase the suction power
dust extractor is too low. on the dust extractor.
The drywall sander's speed is Reduce the speed.
too high.
The internal dust extraction Reduce the suction power or
on the drywall sander is too switch to external dust ex-
low. traction.
The bodyfiller material has a Switch on the external dust
high proportion of filler or is extraction, set the suction
very soft. power thumbwheel to setting
Bosch Power Tools
Cause Corrective measure
6 and, in extreme cases, re-
duce the speed.
The main filter on the dust Clean the filter element regu-
extractor is blocked/ larly:
jammed. – Option 1: Set the suction
– Option 2: Clean the filter
– Option 3: Check the filter
A fleece dust bag is being Use a waste disposal dust
used. bag.
The extraction hose is Remove the blockage or un-
blocked or twisted. twist the hose.
The dust extractor's dust Empty the dust extractor's
container is full. dust container.

Maintenance and Service

Maintenance and Cleaning

Pull the plug out of the socket before carrying out any
u
work on the power tool.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
Changing the Connection Hose (see figure H)
To remove the connection hose (19), loosen the screw on
the hose clamp (23) with a screwdriver and lift the hose
clamp (23) off with the connection hose (19). Remove the
hose clamp (23). Pull out the inner housing (24) of the hose
mount (25) at the other end of the connection hose (19).
Hold the inner housing (24) in place and unscrew the con-
nection hose (19).
To insert a new connection hose (19), hold the inner hous-
ing (24) in place and screw in the new connection hose (19)
all the way. Fit the hose clamp (23) on the other side of the
connection hose (19). Position the screw head so that you
can tighten the hose clamp (23) effortlessly on the sanding
head (11) with a screwdriver with a torque of around 2 Nm.
English | 11
power regulation to the
maximum suction power.
Seal the nozzle, extraction
hose or intake port on the
dust extractor with the
palm of your hand for
10 seconds until the auto-
matic cleaning starts.
element mechanically (ex-
traction).
element for damage and
blockages. Insert a new
filter element regularly.
1 609 92A 76U | (25.02.2022)