10
Alarm Function
The red Alarm LED will flash and an audible alert will
sound to indicate the control unit or mattress pressure
has failed. The LED will remain illuminated until
appropriate pressure is restored. The audible alarm
can be silenced by pressing the Alarm Mute button.
The system has five different alarm signals
which can be identified by five different Pressure
Setting illumination sequences. The signals and
corresponding Pressure Setting LED displays are
illustrated below
Operation
Display
Alarm Signal
Initial Failure
Mattress has failed to reach minimum operational
pressure within 50 minutes
Low Pressure
Pressure has fallen 5mmHg or more below the setting
minimum
High Pressure
Pressure has exceeded the maximum setting by
10mmHg or more
Alternating
Mattress has failed to commence alternation
Mode failure
AC power failure
No pressure output due to mains power failure
If the alarm activates and the system fails to inflate or
loses pressure, please refer to the
Troubleshooting
section on the following pages.
