Frame Pneumatics (A-Auf); Functional Description - Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual

Datex-Ohmeda ADU

Frame Pneumatics (A-AUF)

Functional description

The wall gas unit is in the Frame, and offers all customer specific pneumatic connections: gas inlets
for O , Air and N
2
gauges for central and bottle supply pressures. The gas inlets are intended for connection to the
central gas supply of the hospital.
On the rear of the wall gas unit there are optional cylinder connections for O
cylinders. If there is a loss of wall supply pressure, the user may turn on the reserve gas cylinder.
When the hospital central gas system supplies the gas, the reserve gas cylinders must be off.
The gases from the gas inlets or reserve gas cylinders are distributed within the wall gas unit to the
pressure gauges, O
The supply gases are further distributed through the wall gas unit to the Ventilator and fresh gas
control unit via pneumatic connections. One connecting supplies gases Air, O
gas control unit, the other connecting supplies gases Air and O
When the O
is connected. Adjustment of the O
unit.
If the O
alarm is visually and audibly activated. The pressure sensor for this alarm is in the Ventilator module.
EVAC
Outlet
Central inlets
O
2
Air
N
2
Cylinders
3-8
O / connections for extra gas bottles / vacuum (VAC) / evacuation (EVAC) / pressure
2
flush regulator and O
2
flush button is pushed, O
2
supply pressure decreases to below 270 kPa (270-230 kPa) an electronic Low O
2
O
flush valve.
2
is flushed into the fresh gas outlet to which the patient system
2
flush flow is done with the O
2
Ventilator
O
2
Flush
Gas distribution block
Pressure gauges
and N O reserve gas
2 2
and N O to the Fresh
2 2
to the Ventilator.
2
flush regulator inside the wall gas
2
Bellows
unit
Fresh gas
control unit
Document No. 8502852
Supply
2
Extra gas
outlet
Extra
gas
outlets