Care And Maintenance; Troubleshooting - Hilti SFH 22-A Operating Instructions Manual

6.8.2 Screwdriving
1. Turn the torque, drilling and hammer drilling setting
ring to the required torque setting.
2. Set the forward / reverse switch to the desired
direction of rotation.
6.8.3 Removing the bit / bit holder
1. Remove the bit from the bit holder.
en
2. Open the keyless chuck.
3. Remove the bit adapter.

7 Care and maintenance

WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
7.1 Care of the power tool
CAUTION
Keep the power tool, especially its grip surfaces,
clean and free from oil and grease. Do not use clean-
ing agents which contain silicone.
Never operate the power tool when the ventilation slots
are blocked. Clean the ventilation slots carefully using
a dry brush. Do not permit foreign objects to enter the
interior of the power tool. Clean the outside of the power
tool at regular intervals with a slightly damp cloth. Do
not use a spray, steam pressure cleaning equipment or

8 Troubleshooting

Fault
The power tool doesn't run.
The power tool doesn't run and
all 4 LEDs blink.
The power tool doesn't run and
1 LED blinks.
No hammering action.
The on / off switch can't be
pressed, i.e. the switch is
locked.
18
6.9 Belt hook 7
CAUTION
Check that the belt hook is fitted securely before
beginning work.
The belt hook allows the power tool to be attached to a
belt worn by the operator. The belt hook can also be fitted
to the other side of the power tool for use by left-handed
persons.
running water for cleaning. This may negatively affect the
electrical safety of the power tool.
7.2 Care of the Li‑ion battery
NOTE
Battery performance drops at low temperatures.
NOTE
Store the battery in a cool and dry place.
In order to achieve maximum battery life, stop using the
battery as soon as a significant drop in battery perform-
ance is noticed.
NOTE
- If use continues, further battery discharge will be
- Charge the batteries using the specified and approved
Possible cause
The battery is discharged or is not
pushed all the way in.
Electrical fault.
The power tool has been overloaded.
The overheating prevention cut-out
has been activated.
The battery is discharged.
The battery is too hot or too cold.
The torque and operating mode set-
ting ring are not set to the hammer
drilling symbol.
The forward / reverse switch is in the
middle position (transport lock en-
gaged).
stopped automatically before the battery cells suffer
damage.
Hilti battery chargers for Li‑ion batteries.
Remedy
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
Remove the battery from the tool and
contact Hilti Service.
Release the control switch and press
it again.
Allow the power tool to cool down.
Clean the ventilation slots.
Change the battery and charge the
empty battery.
Bring the battery to the recommen-
ded working temperature.
Turn the torque and operating mode
setting ring to the hammer drilling
symbol.
Push the forward / reverse switch to
the left or right.