Alarms And Safety Devices - 3B Medical Cirrus 5 User Manual

Cirrus 5 User Manual
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Alarms and Safety Devices

10.1 Alarms
a. Power failure alarm: In case of a loss of main power or when the power cord is not
plugged into the wall outlet, an audible alarm is activated with red indicator on (8.1b on
page 10). The troubleshooting is referred to number 12 on page 19.
b. low/high pressure alarm: There is a pressure sensor on the main board to check the
system pressure, when the pressure is lower than 14 PSI, there is an audible alarm with
yellow indicator (8.1c on page 10). When the pressure is higher than 33 PSI, there is an
audible alarm with red indicator (8.1d on page10). The oxygen concentrator will shut off in
this condition. The troubleshooting is referred to 12 on page 19.
c. Low oxygen concentration alarm (OCSI): The oxygen concentration will rise to the

normal operating level in five minutes of operation. When oxygen purity is 85%, the blue
indicator (8.1e on page 10) will light. If oxygen purity falls below <85%, the red indicator
lamp will illuminate with audible alarm, indicating low purity (8.1f on page10). Refer to the
troubleshooting on page 19. Or call your supplier to service the device
d. Temperature alarm: There is a temperature sensor on the main board to check the
internal temperature, if the internal operating temperature reaches higher than 50°C there
is an audible alarm with red indicator on (see H.T. on the lamp) and the oxygen
concentrator will shut off. The troubleshooting is referred to number 12 on page 19.
10.2 Safety devices
a. Compressor motor:
Thermal safety is ensured by a thermal switch situated in the motor winding (145±5℃).
b. Safety valve:
This is fitted on the compressor outlet and is calibrated to 2.5 bar (250kPa).
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