Operating Environments
6-2
www.zoll.com
9650-002360-01 Rev. A
The primary effect of entrained particles is on the operation of the flow pneumotach used to
control the gas delivered to the patient. Dirt on the pneumotach screens affects the device’s
calibration. Cleaning the screens requires a biomedical technician to disassemble the device
and ultrasonically clean the screens. Using a filter in dusty environments prevents having to
remove the device from service for cleaning. In addition to using the filter, you can also keep
the device in the soft case, which will protect the device case and the LCD from being
scratched or damaged. It is also easier to clean the padded case following use in a dusty/dirty
environment than the device.
Caution
When the device is deployed, and not in use, in dusty environments be sure to cover the Gas
Output.
Extreme Temperature Environments
The ventilator’s recommended operating range is from 0
C to 40
C (32
F to 104
F).
However, the ventilator can operate over the range of -26
C to 55
C (-15
F to 131
F) during
emergency situations. For temperature > 45
C and < 0
C the Li-ION batteries stop charging to
prevent damage through excessive heat building. To ensure maximum operating time, the
device automatically monitors the battery temperature and charges it whenever it is safe.
Operating at High Temperatures
When operating the ventilator at high temperatures, you may observe alarm conditions
associated with Li-ION battery performance:
Note:
If the device is stored ready for use at the temperature extremes, users should note the
battery charging and discharging conditions identified below.
Charging
— If operating using external power, the device may trigger an alarm when the
battery reaches its high charge temperature limit of 45
C
113
F). At this temperature Li-ION
batteries stop charging to prevent damage through excessive heat building.
Compliance is a physical characteristic of the patient circuit that varies with temperature. The
circuit becomes more compliant as the temperature rises. The ventilator allows you to increase
the automatic compliance value when operating in hot environments via the main menu.
When operating at high temperatures, you should remove the device from its padded case,
which allows the device to pass heat into the surrounding environment.
Operating at Low Temperatures
When operating the ventilator at low temperatures, you may observe alarm conditions
associated with Li-ION battery performance:
Charging
— If operating using external power, the device may issue an alarm when the battery
reaches its low charge temperature limit of 0
C (32
F).
Compliance is a physical characteristic of the patient circuit that varies with temperature. The
circuit becomes less compliant as the temperature drops. The ventilator allows you to decrease
the compliance value when operating in cold environments.
The O
2
Valve operating performance can be affected by extremely low temperatures.
Consequently, at low temperatures, you should monitor the patient to ensure that the patient is
receiving adequate tidal volume and monitor the patient’s SpO
2
readings.
