Maintenance And Service - stayer IS L20 Manual De Instrucciones

Switching On and Off
To start the machine, press the On/Off switch and keep it
pressed.
The power bulb lights up when the On/Off switch is slightly
or completely pressed, and allows the work area to be illu-
minated when lighting conditions are insufficient.
To switch off the machine, release the On/Off switch.
To save energy, only switch the power tool on when using it.
Adjusting the Speed
IS L20: The speed of the switched-on power tool can
be variably ad­justed, depending on how far the On/Off
switch is pressed.
Light pressure on the On/Off switc results in a low rota-
tional speed. Further pressure on the switch results in an
increase in speed.
IW L20: In addition to the progressive trigger regulation,
this tool adds a tightening torque limit which can be set
using the switch located over the battery, the following ta-
ble shows the available tightening limits:
Selection RPM, min-1
1 0-1500
2 0-1700
3 0-1900
4 0-2000
5 0-2300
Apply the power tool to the screw/nut only when it is
switched off. Rotating tool inserts can slip off.
The torque depends on the impact duration. The maximum
achieved torque results from the sum of all individual tor-
ques achieved through impact. The maximum torque is
achieved after an impact duration of 6-10 seconds. After
this duration, the tightening torque is increased only mini-
mally.
The impact duration is to be determined for each required
tightening torque. The actually achieved tightening torque is
always to be checked with a torque wrench.
Screw Applications with Hard, Spring-loaded or Soft
Seat
A test in which the achieved torques in an impact series
are measured and transferred to a diagram will produ-
ce the curve of a torque characteristic. The height of the
curve corre­sponds with the maximum reachable torque,
and the steep-ness indicates the duration in which this is
achieved.
A torque gradient depends on the following factors:
- Strength properties of the screws/nuts
- Type of backing (washer, disc spring, seal)
- Strength properties of the material being screwed/bolted
together
- Lubrication conditions at the screw/bolt connection
The following application cases result accordingly:
- A hard seat is given for metal-to-metal screw applications
with the use of washers. After a relatively short impact
du­ration, the maximum torque is reached (steep charac-
teris-tic curve). Unnecessary long impact duration only
causes damage to the machine.
- A spring-loaded seat is given for metal-to-metal screw
IPM, min-1 Max. Nm
0-2200 100
0-2350 150
0-2650 200
0-2750 300
0-3200 400
ENGLISH
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applications, however with the use of spring washers, disc
springs, studs or screws/nuts with conical seat as well as
when using extensions.
- A soft seat is given for screw applications, e. g., metal
on wood or when using lead washers or fibre washers as
backing.
For a spring-loaded seat as well as for a soft seat, the
maxi­mum tightening torque is lower than for a hard seat.
Also, a clearly longer impact duration is required.
Tips
Before screwing larger, longer screws into hard materials,
it is advisable to predrill a pilot hole with the core diameter
of the thread to approx. 2/3 of the screw length.
Note: Pay attention that no metal particles enter the
power tool.
Belt Clip: With the belt clip the machine can be hung onto
a belt. The us-er has both hands free and the machine is
always at hand.
Recommendations for Optimal Handling of the Battery
Store the battery only within a temperature range between
­20 °C and 50 °C. As an example, do not leave the battery
in the car in summer.
Occasionally clean the venting slots of the battery using a
soft, clean and dry brush.
A significantly reduced working period after charging in-
di-cates that the battery is used and must be replaced.
Observe the notes for disposal.

5. Maintenance and Service

Before any work on the machine itself (e. g.
maintenance, 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.
Transport
The contained lithium­ion batteries are subject to the
Dangerous Goods Legislation requirements. The user can
transport the batteries by road without further requirements.
When being transported by third parties (e.g.: air transport
or forwarding agency), special requirements on packaging
and labelling must be observed. For preparation of the
item being shipped, consulting an expert for hazardous
material is required.
Dispatch batteries only when the housing is undamaged.
Tape or mask off open contacts and pack up the battery
in such a manner that it cannot move around in the
packaging. Please also observe possibly more detailed
national regulations
Cleaning
When the battery is no longer operative, please refer to an
authorised after-sales service agent for STAYER power tools. If
the machine should fail despite the care taken in manufacturing
and testing procedures, repair should be carried out by an
after-sales service centre for STAYER power tools.
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