Bosch PEX 400 AE Original Instructions Manual page 14

14 | English
Typically the A-weighted noise level of the power tool is:
Sound pressure level 80 dB(A); sound power level
91 dB(A). Uncertainty K=3 dB.
Wear hearing protection
Vibration total values a (triax vector sum) and uncertainty K
h
determined according to EN 62841-2-4: a
2
K=1.5 m/s .
The vibration level and noise emission value given in these
instructions have been measured in accordance with a
standardised measuring procedure and may be used to com-
pare power tools. They may also be used for a preliminary
estimation of vibration and noise emissions.
The stated vibration level and noise emission value repres-
ent the main applications of the power tool. However, if the
power tool is used for other applications, with different ap-
plication tools or is poorly maintained, the vibration level
Choosing the Sanding Sheet
Select a sanding sheet with a grit suitable for how much material you want to remove. Bosch sanding sheets are suitable for
paint, wood and metal.
Use
Sanding down – Coarse sanding work with a
high material removal rate
(coarse sand-
ing)
– Removing old paint
Preparing – Light sanding
(intermediate
– Abrading surfaces for further
sanding)
processing later on
– Intermediate paint sanding
Fine sanding
– Abrading flaws in the paintwork
Changing the sanding sheet (see figures A–B)
To remove the sanding sheet (7), lift it from the side and pull
it from the sanding pad (4).
Remove dirt and dust from the sanding pad (4), e.g. with a
paintbrush, before attaching a new sanding sheet.
The surface of the sanding pad (4) is fitted with a hook-and-
loop fastening, allowing sanding sheets with a hook-and-loop
backing to be secured quickly and easily.
Press the sanding sheet (7) firmly onto the underside of the
sanding pad (4).
To ensure optimum dust extraction, make sure that the
punched holes in the sanding sheet (7) are aligned with the
drilled holes in the sanding pad (4).
You can use the alignment aid (8) to precisely align the sand-
ing sheet (7) on the sanding pad (4). Place the sanding
sheet onto the alignment aid with the hook-and-loop fasten-
ing facing upwards. Press the cams of the alignment aid into
the two holes in the sanding pad and unroll the sanding
1 609 92A 4MV | (24.10.2018)
and noise emission value may differ. This may significantly
increase the vibration and noise emissions over the total
working period.
To estimate vibration and noise emissions accurately, the
times when the tool is switched off or when it is running but
not actually being used should also be taken into account.
2
=8.0 m/s ,
h
This may significantly reduce vibration and noise emissions
over the total working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping their hands warm,
and organising workflows correctly.
Assembly
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Application
– Sanding down old paint, varnish and filler
– Removing thin paint
– Pre-sanding rough, unplaned surfaces
– Sanding uneven surfaces to make them
even
– Removing marks left by coarse sanding
– Repairing surfaces before applying paint or
varnish
– Removing fibres from the surface
– Fine sanding before staining
– Abrading primer before painting
sheet from the alignment aid. Firmly press the sanding sheet
into place.
Selecting a Sanding Pad
The power tool can be fitted with sanding pads of various
hardnesses, depending on the application:
– Medium sanding pad (black): Suitable for all sanding
work, universal application.
– Soft sanding pad (grey, accessory): Suitable for interme-
diate and fine sanding even on curved surfaces.
Changing the Sanding Pad (see figures C–D)
Note: Replace damaged sanding pads (4) immediately.
Remove the sanding sheet or polishing tool. Unscrew the
four screws completely (9) and remove the sanding pad (4).
Clean the top of the new sanding pad (4). Lubricate the
outer ring (shaded in grey in the figure) with a thin layer of
synthetic grease.
Grit
Extra 40
coarse
Coarse 60
Medium 80
Fine 120
Very fine 180
Extra fine 240
Bosch Power Tools