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16.2 Error messages and how to handle them
One (1) long beep - Device has not detected strong enough micro movement signal and
has reached an adjustment limit. Device might not work optimally. Is the sensor positioned
correctly in the bed and device was not in error -state (red led was not blinking)? If not:
Correct the problem and re-try calibration. If yes: Adjust the rotary switch (picture 5) up 2
notches and re-try auto adjustment.
Two (2) long beeps - Device has detected too strong signal and has reached an
adjustment limit. Device might not work optimally. Was person laying still during the
calibration period? Re-try calibration again and see if second time would be succesful. If
second time gives same error sound, adjust the rotary switch (picture 5) down 2 notches
and do the calibration again.
You can always return sensitivity to factory default. First press SW1 three (3) times and
soon after hearing the three sounds, press SW1 again 3 times. That interrupts adjustment
and device returns to factory setting.
17. Checks
17.1 Weekly checks
1. Condition of the cables
Check the condition of the cables
2. Position of the bed sensor
Check the position of the bed sensor under the mattress. The correct position is at the
chest height of the user and across the bed.
3. Power supply & battery check (if power supply is used)
Make sure that power supply and bed sensor are connected to the control unit and
power supply is connected to mains power. When the device is on, remove the power
supply cable from the control unit. Control unit is now working with battery power. If
battery level is low, red light will turn on in the control unit within 30 seconds. In that
case replace batteries. If red light does not turn on, batteries are good.
17.2 Start-up and monthly checks
To ensure faultless performance, conduct the following tests at least once a month and
when ever the device is re-installed.
1. Testing the absence notification sensitivity
To test the sensitivity of the sensor, have person lie on the bed completely still and without
talking. Wait at least 1–2 minutes. If the green light does not light up, adjust the rotary
switch up one position at a time until the green light lights up. If the green LED lights up
when no one is on the bed, adjust the rotary switch down one position at a time until the
green light is no longer on. See also chapter 16. Calibrating the “presence / absence”
sensitivity.
2. Testing the tonic-clonic seizure notification
Make fast-paced movements (e.g. tapping the mattress repeatedly around the bed
sensor). The device should trigger a notification after the preset delay time has passed
