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When the system is determining the patient weight the control unit is also
calculating the optimum pressure level for that weight of patient. The process
occurs every 60 minutes or when the control unit detects a significant change in
weight. The detection works by increasing the pressure in all cells to maximum
and then decreasing them to the lowest possible supportive pressure where the
patient weight is at its heaviest (i.e. sacral, legs etc.).
The weight guidance indicator is accurate to ±10kg. In the illustration below the
weight is approximated to be 100kg with an alternating pressure of 13mmHg.
9.5.2.2 Patient Weight and Pressure
Weight(kg): 40■■■■■■□□□□□□□□□□□□□□267
Mode: Alternating
(13,11)
Pressure Setting: 13 mmHg
Cycle Time: 10 minutes
The weight indicator is not to be used for medical purposes, it is to
act as information only. If the inclusion of the weight indicator could
introduce a hazard it can be hidden, see 9.5.4.3.
Warning
Once the system has set itself for the patient, re-check it after approximately 20-
30 minutes to ensure the patient is comfortable and that the system is functioning
correctly.
The control unit will automatically lockout all functionality 2 minutes after a function
change. To unlock the control unit the ‘lock’ button is pressed for 3 seconds. To re-
engage the lock the button can be pressed for 1 second or the user can wait for the
automatic lock to re-engage. To lock out all functions except mute, press the power
button and the lock/unlock during the weight detection.
When pressed the lock indicator illuminates:
9.5.3 Safety Functions
9.5.3.1 Function Lock
Weight(kg): 40■■■■■■□□□□□□□□□□□□□□267
Mode: Alternating
(13,11)
Pressure Setting: 13 mmHg
Cycle Time: 10 minutes <LOCK>
