PN 13402391 D | User Manual 7 - ENG
EMS 20
3. Verify functionality of the gauge
• Depress button to display level. If level is
displayed and Low Battery Indicator is not il-
luminated, battery level is acceptable.
4. To verify the level of liquid oxygen in the unit
with the liquid level gauge:
• Depress the push button on top of the unit for two
seconds minimum. Read the LED to indicate
contents level.
Caution: The EMS 20 is empty if only the
first red LED is lit.
• If the Low Battery Indicator lights up when the
button is depressed, inform your health care
provider the next time your EMS 20 is filled.
Gen 4 Meter
5. Under certain environmental conditions and
with continuous use, the EMS 20 may develop
an excessive amount of ice on the warming and
breathing coils within the shroud. You should
defrost the unit between liquid oxygen fills to
prevent this ice build-up.
Caution: Always turn the flow control
knob to off (0 position) when not in use,
or when the unit is empty.
To Defrost the Unit
1. Set the EMS 20 flow control knob to 0 and allow
the unit to warm to room temperature, as indi-
cated by the melting of all ice from the unit.
2. Check the condensation collection bottle fre-
quently during defrosting and empty as required.
Battery Care and Maintenance
• Depress button to display level. If level is
displayed and Low Battery Indicator is not il-
luminated, battery level is acceptable.
• If the Low Battery Indicator lights up when the contents button
is depressed, call your Service Provider to replace the battery.