Flush; Base Flow; Pop Off; 3- Main Menu - BIO-MED DEVICES Crossvent-2i+ Operation & Service Manual

VIII. M A I N T E N A N C E
F L U S H
(Valve D1, D3- if equipped with Exhaled Tidal Volume monitoring)
Using a length of tubing, connect the blue pneumotach fitting on the back of the unit to a low flow test standard and turn on
the Crossvent.
Press SETUP and then CAL MENU.
Activate VALVES.
Turn ON valves A, D1 and D3, and set a flow of 10 LPM.
Check for a flow of 40 - 60 ml/min coming from the fitting.
Move the tubing connection to the other pneumotach fitting.
Check for a flow of 40 - 60 ml/min coming from this fitting also.
B A S E F L O W
Connect a patient circuit to the unit and to a low flow test instrument.
Set the PIP to its maximum setting.
Set the PEEP to its maximum setting.
Activate Valve E.
Check for 2 – 3 lpm.
P O P O F F
Install a patient circuit with the end occluded (plugged, no test lung). Rather than connecting the airway pressure line to the
Crossvent, however, connect this to a low pressure test instrument.
Turn on the CROSSVENT and press the SETUP/CAL MENU/VALVES keys. (If the Crossvent is already on and the
Arrow keys are present, turn it off and back on to make the SETUP key available).
Set the PIP Knob fully clockwise.
Set the flow to 5 lpm.
Turn on Valve A by pressing its corresponding ON/OFF key.
Occlude the exhaust opening of the exhalation valve on the circuit while observing the test instrument reading. It should
indicate between 64 and 96 cmH
Increase the flow until it is at its maximum setting. The pressure should not exceed 96 cmH

3- MAIN MENU

B A R G R A P H A C C U R A C Y
Disconnect the patient circuit.
Tee the airway pressure fitting on the rear of the Crossvent to a low-pressure measurement instrument and a 10-25 ml
syringe (or similar).
Turn on the CROSSVENT in the MAIN menu and set:
RATE to 20
TV ml to 100
FLOW to 5
In the ALARM 1 menu, set the PEAK PRESS Alarm high limit to its maximum setting
In the ALARM 2 menu, set the PEEP alarm high and low limits to their maximum settings.
As the unit cycles, slowly depress the plunger on the syringe. Stopping at various pressures along the bar graph, verify the
readings on the bar graph are within ±10% of the readings on the test instrument.
P E E P P R E S S U R E S I G N A L
Connect the Exhalation Valve fitting on the back of the Crossvent to a low pressure test instrument.
With the PEEP Knob fully clockwise, the pressure reading should be 9-11 cmH
B A T T E R Y A L A R M
(This alerts the user they are in battery mode)
Turn on the CROSSVENT without external power.
BATTERY key will flash as well as the LED.
The audible alarm is silenced for 60 seconds when unit is initially powered on.
Press the BATTERY key to acknowledge battery mode and to cancel the Battery Alarm.
The BATTERY key will revert to its normal state with its bar graph indicating the percentage of battery charge left.
A N D S E R V I C E - C O N T .
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