Troubleshooting
182 Instructions for use Perseus A500 SW 2.0n
Power supply failure
Mains power supply failure
If mains power fails, Perseus automatically
switches to the internal battery. A fully charged
battery will maintain operation for at least
30 minutes.
Remaining battery charge is displayed on the
status display.
The breathing system warmer is deactivated
during battery operation. The peak inspiratory
pressure PIP may be limited, but it will be at least
55 hPa (cmH
2O).
Mains power supply failure and empty
batteries
If mains power fails and the batteries are empty, a
signal tone is emitted. Manual ventilation and
spontaneous breathing remain available. O2 and
anesthetic agent can still be delivered using the
emergency O2 delivery (with electronically
controlled gas mixer) or the flow control valves
(with mechanically controlled gas mixer) and
connected vaporizers.
The following are not available:
– Ventilator
– Electronically controlled gas mixer
– Device monitoring and patient monitoring
Further procedures:
1 Check vaporizer setting.
2 Electronically controlled gas mixer:
Use emergency O
2 delivery.
Mechanically controlled gas mixer:
Close the Air flow control valve and the N
2O
flow control valve and use only O
2 as fresh
gas.
3 Monitor the O
2 flow on the O2 flowmeter
(electronically controlled gas mixer) or on the
total flow tube (mechanically controlled gas
mixer).
4 Manually ventilate the patient.
5 Ensure corresponding substitute monitoring.
After power supply is restored
1 Restart the device, see page 80.
2 Charge empty batteries for at least 8 hours.
3 Check the displays for mains voltage and
battery on the status display.
Blown fuses for the auxiliary power
sockets
1 Disconnect mains power supply.
2 Remedy the malfunction.
3 For devices without isolation transformer:
Replace the fuses.
CAUTION
Risk of device malfunction
If mains power fails, devices connected to the
auxiliary power sockets are not supplied from the
internal battery.
Ensure an alternative power supply for
connected devices.
WARNING
Risk of patient injury
If all power sources fail, the screen goes dark
and automatic ventilation ends.
Manually ventilate the patient.
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