Dust/Chip Extraction; Operating Modes; Starting Operation; Working Advice - Bosch PSA 18 LI Manual Original

OBJ_BUCH-1848-001.book Page 14 Monday, May 13, 2013 10:57 AM
14 | English
For certain work, the saw blade 1 can also be turned through
180° (with the teeth pointed upwards) and re-inserted again.
Removing the Saw Blade
 Before removing, allow the saw blade to cool down.
Danger of injury when touching the hot saw blade.
Press the SDS clamping lever 4 forward and pull out the saw
blade 1. Release the SDS clamping lever 4.

Dust/Chip Extraction

 Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Operation

Operating Modes

Orbital Action Settings
The adjustable orbital action allows for optimal adaptation of
cutting speed, cutting capacity and cutting pattern to the ma-
terial being worked.
The level of orbital action can be set with rotary switch 5, even
during operation.
Orbital action switched off:
– For working thin or hard material such as
sheet metal or steel.
For achieving clean cutting edges.
Orbital action switched on:
– For working non-ferrous metals, hardwood,
plastics or materials of medium density.
– For working soft materials, e.g., soft build-
ing materials, insulation material, soft-
wood, tree wood.

Starting Operation

Inserting the battery
 Use only original Bosch lithium ion batteries with the
voltage listed on the nameplate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
Note: Use of batteries not suitable for the machine can lead to
malfunctions of or cause damage to the power tool.
Insert the charged battery 8 into the base of the power tool
until it can be felt to engage and is securely locked.
1 619 X08 257 | (13.5.13)
Switching On and Off
To switch on the power tool, first press the lock-off button 7
right or left. Then press the On/Off switch 6 and keep it
pressed.
To switch off the power tool, release the On/Off switch 6.
Note: For safety reasons, the On/Off switch 6 cannot be
locked; it must remain pressed during the entire operation.
To save energy, only switch the power tool on when using it.
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.
 Do not continue to press the On/Off switch after the
machine has been automatically switched off. The bat-
tery can be damaged.
Controlling the Stroke Rate
Increasing or reducing the pressure on the On/Off switch 6 en-
ables stepless stroke-rate control of the switched-on machine.
Light pressure on the On/Off switch 6 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. Allow the machine to cool down by
running it for approx. 3 minutes at maximum stroke rate.
Temperature Dependent Overload Protection
When using as intended for, the power tool cannot be subject
to overload. When the load is too high or the allowable battery
temperature of 70 °C is exceeded, the electronic control
switches off the power tool until the temperature is in the
optimum temperature range again.

Working Advice

 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.
Tips
 When sawing light building materials, observe the stat-
utory provisions and the recommendations of the ma-
terial suppliers.
Check wood, press boards, building materials, etc. for foreign
objects such as nails, screws or similar, and always use the
correct sawblade.
Switch the machine on and guide it toward the workpiece.
Position the base plate 2 onto the surface of the work and saw
through the material applying uniform contact pressure and
feed. After completing the working procedure, switch the
machine off.
If the saw blade should jam, switch the machine off immedi-
ately. Widen the gap somewhat with a suitable tool and pull
out the machine.
Bosch Power Tools