5- Keys Common To All Menus; Lock; Alarm Quiet; Arrow Keys - BIO-MED DEVICES Crossvent-2i+ Operation & Service Manual

III. S P E C I F I C A T I O N S ,
Only the infant pneumotach, Bio-Med Devices Catalog #4409, can be used. Any other pneumotach will give faulty
readings.
Under certain circumstances, such as incompliant or large patients, the Peak Expiratory Flow may be too great for the
pneumotach to read. When this occurs, "EXCEEDS PEF" will be displayed in the Alarm 1 menu under EXHTV or
EXHMV and the Crossvent will alarm. This is to notify the user that the pneumotach may be too great a restriction
in the circuit for the patient.
Periodically, the pneumotach tubes are flushed with a very low flow of gas in order to prevent fluids from migrating
up these tubes. For breaths when this occurs, "CAL" is displayed instead of a volume. This may occur more
frequently after the unit is first turned on.
The displayed Exhaled Tidal Volume updates with each breath except for "CAL" breaths.
This alarm is disabled when Constant Flow is on.
EXHALED MINUTE VOLUME- (see EXHALED TIDAL VOLUME)
NOTE: EXHMV indicates a projected or anticipated minute volume based on the current exhaled
tidal volume readings.
PEEP/CPAP- Displays continuous pressure in Constant Flow/CPAP mode.
MEAN PRESSURE- is the average pressure of a single breath.
DEACTIVATING ALARMS- The alarms for Mean and O
lowest limit to off.
WARNING: WHEN AN ALARM IS TURNED OFF, AUTO SET IS
DEACTIVATED FOR THAT ALARM.
WARNING: While some alarms may be turned off to permit use of the Crossvent
without them, it is recommended that they be used at all times.

5- KEYS COMMON TO ALL MENUS

L O C K
Locks all keys, except ALARM QUIET and the MENU keys, making them inactive if pressed. When active, this key is
highlighted and the touchscreen is locked. To unlock it, press this key once, then again within 5 seconds of the first
A L A R M Q U I E T
Silences the audible alarm for a period of 60 seconds or 120 seconds if pressed twice consecutively. When set, the key is
highlighted and counts down showing the time remaining for which the alarms will be silenced. To cancel, press the key
once if the time remaining is ≥ 61 seconds or twice if it is ≤ 60 seconds. When you turn the ventilator on, the Alarm Quiet is
activated automatically for 60 sec.
When activated, the ALARM QUIET function will silence the audible alarm for any alarm conditions that exist at the time
it is activated. Should a new and different alarm condition occur while it is activated, ALARM QUIET will automatically be
canceled and the audible alarm will return. If Alarm Quiet is pressed with no alarm conditions existing at the time, then
while it is active, any new alarm will be silenced.
NOTE: The Power Failure alarm may not be silenced using this key. The Power Failure alarm may
be silenced by pressing the ALARM RESET button.
A R R O W K E Y S
Scroll up and down, at an accelerating rate, a selected parameter. When the value being changed reaches its upper or lower
limit as allowed by the software, it stops scrolling and a tone sounds.
NOTE: While scrolling, some hesitation may be observed.
A U T O S E T
(use is optional)- This key must be depressed 2 times within 5 sec. The key is highlighted and counts from 5 to 1 while
average values are computed over 5 breaths and alarm limits are automatically set above and below the average as follows:
LOW
PEAK -30%
C O N N E C T I O N S
A/C
HIGH LOW
+30% -30%*
A N D U S E R I N T E R F A C E -
may be turned off by scrolling the low limit down past its
2
SIMV
HIGH
+30%*
21
C O N T .
CPAP
LOW HIGH
MINIMUM 80 cmH2O