Bosch GHO 185-LI Professional Manual Original página 22

22 | English
– Unscrew the three fastening screws (14) using the Torx
key (13) and remove the clamping jaw (15).
– Push the retaining clip (19) together with the planer
blade (18) and/or the HM/TC adapter (37) out of the
blade head (16).
– Remove the screws (20).
– Fit the assembled HSS planer blade (see "Fitting the
Planer Blades (see figures E–F)", page 21) and align it
with the centre of the planer base plate (11).
– Put the clamping jaw (15) on and tighten the three
fastening screws (14) using the Torx key (13), following
the tightening sequence (①②③) specified on the
clamping jaw (15).
Dust/Chip Extraction
The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Clean the chip ejector (3) regularly. Clean a clogged chip
ejector using a suitable tool, e.g. a piece of wood, com-
pressed air, etc.
Do not allow the chip ejector to come into contact with
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your hands. You may be injured by rotating parts.
Always use an external dust extraction device or chip/dust
bag to guarantee optimum suction.
External dust extraction (see figure N)
An extraction hose (dia. 35 mm) (28) (accessory) can be
connected to the chip ejector on either side.
Connect the dust extraction hose (28) to a dust extractor
(accessory). You will find an overview of how to connect to
various dust extractors at the end of these operating instruc-
tions.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Self-generated dust extraction (see figure N)
A chip/dust bag (accessory) (29) can be used for smaller
jobs. Insert the dust bag nozzle of the chip/dust bag firmly
into the chip ejector (3). Empty the chip/dust bag (29) at
regular intervals to maintain optimum dust collection.
1 609 92A 8GN | (16.05.2023)
Selectable chip ejector
Using the changeover lever (10), the chip ejector can be (3)
adjusted to the right or left. Push the changeover lever (10)
all the way towards the end position until it clicks into place.
The selected chip ejector direction is indicated by an arrow
symbol on the changeover lever (10).
Operation
Start-up
Setting the cutting depth
Using the knob (2), the cutting depth can be continuously
adjusted between 0–2.6 mm with the aid of the cutting
depth scale (1) (scale division = 0.1 mm).
Switching on/off
Make sure that you are able to press the On/Off switch
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without releasing the handle.
To start the power tool, first press the lock-off switch (4),
then press and hold the on/off switch (5).
To switch off the power tool, release the on/off switch (5).
Note: For safety reasons, the on/off switch (5) cannot be
locked; it must remain pressed during the entire operation.
Practical advice
Remove the battery from the power tool before carry-
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ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
Parking rest (see figure O)
The parking rest (32) makes it possible to put down the
power tool directly after working, without any danger of
damaging the workpiece or planer blade. During the work
process, the parking rest (32) is highly pivoted and the rear
section of the planer base plate (11) is released.
Note: The parking rest (32) must not be removed.
Planing Procedure (see figure O)
Set the required cutting depth and position the power tool
with the front section of the planer base plate (11) on the
workpiece.
Only bring the power tool into contact with the work-
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piece when switched on. Otherwise there is danger of
kickback if the cutting tool jams in the workpiece.
Switch on the power tool and guide it over the surface of the
workpiece, applying uniform feed.
To achieve high-quality surfaces, apply only a low feed rate
and exert pressure on the middle of the planer base plate.
For the processing of hard materials, such as hardwood, and
also when utilising the maximum planing width, set only a
low cutting depth and reduce the planer feed as appropriate.
Excessive feed reduces the quality of the surface finish and
can lead to the chip ejector quickly becoming blocked.
Only sharp planer blades achieve good cutting performance
and make the power tool last longer.
Bosch Power Tools