Maintenance and repair
Changing the battery of the Compact System
When
switched off, the installed battery has a
service life of approximately four years from the
date of production.The service life increases
accordingly when under operation. It is only
subject to self discharge when under operation. If
the battery has run down, an error message is
generated.
T
he tightening controller has a built-in battery-
buffered RAM for storing the tightening results.
The data is saved in the RAM due to the battery if
the power fails. 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.
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).
•
Open and remove the front cover.
•
Remove the four bolts on the display unit.
Hold the display unit and swivel it to the left.
Do not let the ribbon cable tighten or come
loose!
Fig. 29:
Exchanging the battery
DANGER
Electrical voltages!
Electrocution
Do not carry out maintenance work on the
tightening channel unless the Compact
System has been switched off and the
power plug disconnected. Protect the
system from being switched on again.
Wait until the discharging time (at least 90
seconds) has elapsed.
CAUTION
Risk of damage to persons and property!
To protect the assembly and the system
components, measures against damage
caused by electrostatic discharge (ESD
protection) must be implemented for this
assembly work.
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