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4. Controls and Indicators
Controls
Pressure Control
This is situated on the front panel and is adjusted by the carer to suit
the weight of the patient.
Power:Connect/
Power:Disconnect
Switch
This is situated on the side panel of the pump and is used to
activate the unit and reset alarms. Mains isolation should be
performed with the pump disconnected from power.
To isolate the pump from the mains power, switch the pump to
Power: disconnect (
) and then remove the plug from the mains
power socket.
Indicators
Power On
A light on the front panel indicates that the pump is running.
Wait
When the overlay is being inflated the amber Wait indicator remains
illuminated until the overlay is correctly inflated.
Low Pressure
In the event of low pressure in the overlay, the yellow Low Pressure
alarm indicator starts flashing and an audible alarm sounds.
Power Fail
In the event of mains power failure, the yellow alarm indicator starts
flashing and an audible alarm sounds. If the power supply is
returned the audible alarm stops, but the alarm light remains
illuminated until the system is reset (UK only).
Alarm
Alarm Priority
All the alarm conditions are low priority, compliance with 60601-1-8.
Alarm Reset
When the cause of the alarm has been resolved, the pump needs
to be reset. This can be achieved by switching the pump to
Power:disconnect and back to Power:connect using the
Power:connect / Power:disconnect switch on the side panel.
Self Test
Every time the pump is switched on all indicator lights illuminate for
approximately two seconds. During this period, the system self
tests its circuits.
(Power:Connect)
(Power:Disconnect)
