Festool PSBC 420 EB Original Operating Manual - page 19
PSC 420 EB, PSBC 420 EB
19
GB
7.7
Stroke speed control
The number of strokes can be adjusted steplessly
with the adjusting wheel [1-5] between 1500 and
3800 min
-1
(PSBC 420 EB: 1000 - 3800 min
-1
). This
enables you to optimise the cutting speed to suit the
respective material.
In position A, the automatic load detection is acti-
vated: The stroke speed is reduced in no-load oper-
ation and is restricted to the highest value when the
blade enters the workpiece.
8
Working with the machine
When working on small or thin workpieces, always
use a stable base, or the CMS module (accessory).
When working, hold the electric power tool by the
handle and guide it along the desired cutting line.
For precise cuts and smooth running, use two
hands to guide the electric power tool.
Free saw guidance along a scribe mark
The triangular pointer on the splinterguard [4-1]
indicates the cutting line of the saw blade. This fa-
cilitates sawing along a scribe mark.
8.1
Lighting
A continuous light or stroboscope is installed for il-
luminating the cutting line:
up to approx. 2100 min
-1
: continuous light
from approx. 2100 min
-1
: stroboscope light
In overhead position (+/- 45°), the lighting is
switched off completely.
If required, you can adjust the lighting:
Plug in the electric power tool.
Press both buttons simultaneously [1-2] and
hold for approx. 10 s until a beep sounds.
Release both buttons [1-2].
Press the left button (on the pendulum stroke
side) to select the stroke speed and conse-
quently the desired operating mode:
Press the right button to save the setting.
8.2
Acoustic warning signals
Acoustic warning signal sounds and the machine
switches off to indicate the following operating
states:
9
Service and maintenance
Recommended stroke speed (position of the
adjusting wheel)
Hard and soft wood, plywood board, ply-
wood, chip board
A
Hardboard
4 - A
Plastic
3 - A
Ceramic, aluminium, non-ferrous metals
3 - 5
Steel
2 - 4
CAUTION
Material with high dust generation (e.g. plaster-
board)
Damage to machine through dust penetration,
risk of injury
Do not work overhead!
WARNING
The stroboscope light may make it difficult to de-
termine the saw blade position
Risk of injury
Ensure the work area is well illuminated.
Mode
Indication during
configuration
Behaviour
during operation
1
Light flashes
With stroboscope
(standard)
2
Light on
Permanent light
without strobo-
scope
3
Light off
Light switched off
Battery low or machine over-
loaded.
– Change the battery.
– Reduce machine workload.
Machine is overheating.
– You must allow the machine to
cool down before further usage.
Battery pack faulty or overheated.
– Once the battery pack has cooled
down, perform a function check
using the charger.
WARNING
Risk of injury, electric shock
Always disconnect the battery pack from the
machine before any cleaning or maintenance!
All maintenance and repair work which requires
the motor housing to be opened, must only be
carried out by an authorised service workshop.