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TURNING ON AND OFF IN BATTERY MODE
If the device is powered by the optional available powerpackpoint 2, press and
hold the ON/OFF key for approx. 3 seconds to switch it on or off.
In standby mode the device automatically switches itself off after 1 minute.
STANDBY MODE
If the blower is switched off, the device switches to standby mode (discernible
on the lit display with date and time).
The point 2 can be kept in standby mode permanently. This does not harm it.
If the powerpackpoint 2 is fi tted on the device, the batteries are charged in
standby mode. The charging process is indicated by a fl ashing battery sym-
bol on the display.
AUTOMATIC ZERO POINT CORRECTION OF PRESSURE SENSOR
Automatic zero point correction ensures the uniformly high precision of the pres-
sure measurements and takes account of aging effects. Therefore the electric
and electronic components are maintenance-free.
Sensors are normally temperature-compensated before being installed in CPAP
devices. This process requires certain compensation tools, which are used
solely by trained staff. Unfortunately, the selected values are not permanent
as they vary over time due to aging, vibrations or constant changes in climate.
This means that these values need to be checked for correctness at prolonged
intervals and possibly readjusted.
HOFFRICHTER's technicians have however developed a new method in which
the necessary compensation tools are, so to speak, permanently „on board"
the point 2. It is thus no longer necessary to check measurement accuracy.
To allow this method to function, the point 2 has to be put on standby from time
to time. Here it is suffi cient to run the device in this mode for just a few sec-
onds before and after each starting up of the blower to allow the software to
collect and apply the necessary data. We also recommend running the device
on standby for a longer period, e.g. for a day, once a month.
30
Using the device
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