41/65
D9U003VB3-0101_04
To fit the accumulator back-up pack:
Disconnect SCU from mains.
Mute audio alert signal (see „Mute“ - chapter 11.2.2).
Make sure the bottom side of the accumulator with label is oriented correctly.
Push accumulator pack into mounting slots 1 until it clicks into place.
Switch SCU back on.
To remove the accumulator back-up pack:
Switch off SCU.
Pull down the accumulator pack’s release tab 2.
Pull out accumulator pack while holding down release tab.
NOTE There is no need to remove the accumulator pack except when replacing it.
10.2.1
Detection of the correctly inserted accumulator (with Mains power switch turned on)
Accumulator is correctly inserted to SCU when the Accumulator Charge Status Indicator is lit for 2 seconds and the
acoustic signal sounds for 2 seconds after the Accumulator power switch is turned on. The Accumulator Charge Indicator
flashes 3 times during disconnection after the Accumulator power switch is turned off. After the disconnection of the accu
-
mulator by Accumulator power switch, it is necessary to wait at least 10 seconds for correct function of the accumulator
detection before the Accumulator power switch is turned on again.
2
1
Fig. Accumulator Release Button on the bottom of SCU
Fig.
Fitting the accumulator pack
Fig.
Removing the accumulator pack
