Notes - BIO-MED DEVICES CROSSVENT-3+ Operation & Service Manual

I . I . P A T I E N T P A T I E N T S A F E T Y S A F E T Y - - - -
I . I . P A T I E N T P A T I E N T S A F E T Y S A F E T Y

NOTES

NOTES
NOTES NOTES
• With entrainment on, flow accuracy from 5 - 100 lpm is ±10% or 1 lpm, whichever is greater, and
with a flow of 100 lpm and over, flow accuracy is within 15% of displayed flow. No accuracy is
claimed below 5 lpm.
• When the CROSSVENT is turned on, it automatically recalls all of the settings stored in memory
before it was turned off. The parameters stored are: all the main functions; high and low alarm
limits; secondary modes; which sensors are on or off. Several factors can cause the battery backed
memory to be lost.
defective random access memory (service required); or if the microprocessor is, by chance, storing
data in the battery backed memory at the time power is turned off. In this case it is necessary to
re-enter the previously set parameters.
• The Maximum Pressure should always be set higher than PEEP in order to achieve the PEEP
setting.
• While connected to an active gas source, the Maximum Pressure and PEEP controls should be
turned off (fully counter clockwise) when the Crossvent is not in use to conserve gas.
• The Power Failure alarm may not be silenced using the Alarm Quiet key. The Power Failure alarm
may be silenced by pressing the alarm reset button.
• Pressure Support is only active during SIMV and CPAP, but may be set at any time.
• The wall plug-in power supply is furnished for 117 VAC, 60 Hz or 220 VAC, 50 Hz operation, as
required. It is not possible to overcharge the battery. Always keep the battery fully charged when
not in use.
•
It is important to use the correct reference gases (100 and 21%) when performing the Oxygen
sensor calibration. A worn out sensor will not calibrate accurately.
•
Since it is not possible to damage the CROSSVENT ventilator by normal use of its keys and
control knobs, the user is encouraged to experiment with the CROSSVENT settings while the unit
is not connected to a patient.
•
A highlighted field on the display indicates that a parameter has been selected and may be adjusted
using the arrow keys.
• If it is desired to deactivate the oxygen sensor, select it and scroll the lower limit down to OFF.
The oxygen function is now inoperative. The function may be reactivated at any time by pressing
it and scrolling the low limit up. The oxygen sensor is now reactivated. This allows the ventilator
to be used without the oxygen sensor. When this sensor is off, it may be disconnected while the
ventilator is in use, without causing an alarm.
• For blended gas, the Bio-Med Devices blender should be used.
• It is recommended that an external filter/water trap be used at all times in order to provide greater
protection to the internal components of the CROSSVENT.
• For greatest accuracy, verify flow using a 60% O2 gas supply, making certain that the pressure to
the CROSSVENT inlet remains within specified pressure limits (31-75 psi; 303.6 –517.4 kPa) at all
flows.
• When the Crossvent is first turned on and is in battery mode, if a period longer then 60 seconds
passes and the BATTERY key has not been pushed, an audible alarm will sound. When the
BATTERY key is pushed, the audible alarm will be silenced.
• Due to the fact that O2 sensors sometimes change output over time once exposed to atmosphere, a
calibration should be performed periodically (once a month) in order to assure optimal accuracy.
When the sensor is consumed and does not calibrate properly, it should be discarded and a new
sensor installed and calibrated.
C C C C O N T . O N T .
O N T . O N T .
These are: low battery backed memory battery voltage (service required);
5 5 5 5