3 609 929 B62/2009-02 | KE350/KE350G IL Bosch Rexroth AG 37/120
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Exchanging the battery
Fig. 8:
The communication unit has a built-in battery-
buffered SRAM for storing the tightening
results. In the event of a power failure, the
data in the SRAM is retained thanks to the
battery. The system clock is also supplied by
the battery. The above mentioned data, as
well as date and time, will be lost if the battery
is discharged. In this case, an error message
is generated.
Proceed as follows to exchange the battery:
• Carry out data storage (when the battery
is exchanged, all data stored in the
memory module is lost).
• Remove the discharged battery. Lift the
holder slightly with a screwdriver and slide
the battery forwards.
• Install a new battery:
• The positive end must point towards the
holder (upwards). To insert the battery, lift
the holder slightly and slide the battery
under the holder.
• Set the real-time clock again using the
BS350 operating program.
The following is a list of recommended
batteries.
Spare parts
Please refer to the address directory under
www.boschrexroth.com and in chapter
“16 Service and sales” on page 40.
for the addresses of our foreign subsidiaries.
ATTENTION
Battery short-circuit!
Discharge
y Install the battery with your fingers; do
not use conductive tools (e.g. tweezers)
under any circumstances.
13
24
Tab. 9: Battery: Recommended types
Com-
ponent
Desig-
nation
Manufac-
turer/
supplier
Type Comments
Lithium
cell 3 V
BT1 SONY CR2450 Lithium
battery 3 V,
Q ≥
560 mAh
24.5 x 5 mm
VARTA CR2450
KE350.book Page 37 Friday, February 6, 2009 1:27 PM
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