MSA ICU Mode D'emploi page 14

Note:
In stand-by mode a warning sounds every 10 seconds to alert the user
to remove the key.
After removal of the key, the device performs a self-chek to check
proper functioning. Here the LED blinks, the display briefly shows all
available symbols and an audible signal sounds (beeeep, pause,
beep bop).
The device now also shows the measured pressure on the display. It
is ready for use.
The cylinder pressure, however, is shown on the display only for the
first 3 ½ minutes. Thereafter, if the apparatus is in use, the LCD
automatically switches to remaining service time as standard display.
11.2 Switching Off the ICU-S
In order to switch off the ICU, the compressed air breathing
apparatus must be depressurized. To do this, close the compressed
air cylinder(s) and release the pressure with the lung governed
demand valve (see Instructions for Use of compressed air breathing
apparatus).
Then place the key onto the ICU-S.
Afterwards press the yellow button twice within 2 seconds. When the
ICU-S is turned off, a signal sounds (beeeep, pause, beep bop bop)
and the LCD and LED go off.
Note:
The apparatus is considered pressure-free when the measured pressure
is less than 10 bar.
12 RFID Tag version
For models with the optional RFID tag:
The RF power used to activate the RFID tag must be less than 2 W.
If the device is equipped with a RFID tag, it is located on the left side of
the device beneath the IR data port.
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