Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch WEU PST 18 LI Notice Originale

OBJ_BUCH-1204-003.book Page 19 Monday, February 23, 2015 2:26 PM
Switching On and Off
To start the machine, first push the lock-off button for the
On/Off switch 1 and then press the On/Off switch 2 and keep
it pressed.
The power light 18 lights up when the On/Off switch 2 is
slightly or completely pressed, and allows the work area to be
illuminated when lighting conditions are insufficient.
To switch off the machine, release the On/Off switch 2.
Note: For safety reasons, the On/Off switch 2 cannot be
locked; it must remain pressed during the entire operation.
To save energy, only switch the power tool on when using it.
Controlling the Stroke Rate
Increasing or reducing the pressure on the On/Off switch 2
enables stepless stroke-rate control of the switched-on ma-
chine.
Light pressure on the On/Off switch 2 results in a low stroke
rate. Increasing the pressure also increases the stroke rate.
The required stroke rate is dependent on the material and the
working conditions and can be determined by a practical trial.
Reducing the stroke rate is recommended when the saw
blade engages in the material as well as when sawing plastic
and aluminium.
After longer periods of work at low stroke rate, the machine
can heat up considerably. Remove the saw blade from the ma-
chine and allow the machine to cool down by running it for ap-
prox. 3 minutes at maximum stroke rate.
Battery Charge-control Indication
The battery charge-control indicator 3 indicates the charge
condition of the battery when the machine is switched on. It
consists of 3 green LEDs.
LED
Continuous lighting 3 x green
Continuous lighting 2 x green
Continuous lighting 1 x green
Slow flashing 1 x green
Temperature Dependent Overload Protection
In normal conditions of use, the power tool cannot be over-
loaded. If the power tool is overloaded or not kept within the
permitted battery temperature range, the speed is reduced or
the power tool switches off. At reduced speed, the power tool
will run again at full speed once the permitted battery temper-
ature is reached or the load is reduced. During automatic
shut-down, switch off the power tool, allow the battery to cool
down, then switch the power tool back on.
The 3 LEDs of the battery charge-control indicator 3 flash rap-
idly when the battery temperature is not within the operating
temperature range of –20 to +50°C, and/or when the over-
load protection has responded.
Protection Against Deep Discharging
The lithium-ion battery is protected against deep discharging
by the "Electronic Cell Protection (ECP)". When the battery is
empty, the machine is switched off by means of a protective
circuit: The inserted tool no longer rotates.
Bosch Power Tools

Working Advice

 When working small or thin workpieces, always use a
stable support or a saw station (Bosch PLS 300).
Plunge Cutting (see figure K)
 Plunge cuts may only be applied to soft materials, such
as wood, gypsum plaster boards, etc.!
Use only short saw blades for plunge cutting. Plunge cutting is
possible only with the mitre angle set at 0°.
Place the machine with the front edge of the base plate 9 on
to the workpiece without the saw blade 14 touching the work-
piece and switch on. For machines with stroke rate control,
select the maximum stroke rate. Firmly hold the machine
against the workpiece and by tilting the machine, slowly
plunge the saw blade into the workpiece.
When the base plate 9 fully lays on the workpiece, continue
sawing along the desired cutting line.
Parallel Guide with Circle Cutter (Accessory)
For cuts using the parallel guide with circle cutter 27 (acces-
sory), the thickness of the material must not exceed a maxi-
mum of 30 mm.
Remove the "Cut Control" base 13 from base plate 9. For this,
lightly press the base together and remove it from the guide
21.
Parallel Cuts (see figure L): Loosen the locking screw 26 and
slide the scale of the parallel guide through the lead 21 in the
base plate. Set the desired cutting width as the scale value on
the inside edge of the base plate. Tighten the locking screw
26.
Circular Cuts (see figure M): Drill a hole (large enough to ac-
comodate the saw blade) close to the cutting line within the
circle to be sawn. Work the drill hole with a router or file to en-
Capacity
sure that the saw blade faces flush against the cutting line. Re-
≥ 66 %
position the locking screw 26 on the other side of the parallel
guide. Slide the scale of the parallel guide throught the lead
34–65 %
21 in the base plate. Drill a hole in the centre of the cutout to
11–33 %
be sawn. Insert the centring tip 28 through the inside opening
≤ 10 %
of the parallel guide and into the drilled hole. Adjust the radius
as scale value at the inside edge of the base plate. Tighten the
locking screw 26.
Coolant/Lubricant
When sawing metal, coolant/lubricant should be applied
alongside cutting line because of the material heating up.

Maintenance and Service

Maintenance and Cleaning

 Before any work on the machine itself (e. g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
 For safe and proper working, always keep the machine
and ventilation slots clean.
When the battery is no longer operative, please refer to an au-
thorised after-sales service agent for Bosch power tools.
English | 19
1 609 92A 0R3 | (23.2.15)