3 609 929 B61/2008-09 | SE352/SE352M Bosch Rexroth AG 27/88
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Exchanging the battery
Fig. 6:
The control 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, are lost if the battery is discharged.
In this case, an error message is created.
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 30 for the
addresses of our foreign subsidiaries.
10 Decommissioning
For details about how to disassemble and
replace the SE352/SE352M control unit,
please refer to chapter “11 Disassembly and
replacement” on page 28.
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. 4: Battery: Recommended types
Com-
po-
nent
Desig-
nation
Manu-
facturer/
supplier
Type Comment
Lithium
cell 3 V
BT1 SONY CR2450 Lithium
battery 3 V,
Q ≥
560 mAh
24.5 x 5 mm
VARTA CR2450
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