Battery; Pressure Transducer; Flow Calibration; Touchscreen (Calibration) - BIO-MED DEVICES CROSSVENT-3+ Operation & Service Manual

IX. MAINTENANCE AND SERVICE- cont.
calibration procedures to prevent unauthorized or untrained personnel from gaining access to these
procedures as changes made can affect the operation of the ventilator. It is possible to exit the CAL menu
and return to normal operation at any time by pressing the MAIN MENU key. When returning to the
MAIN menu from the SETUP or CAL menus, the ventilator may not cycle due to invalid settings caused by
changes to those settings made during test or calibration procedures.
pressed, a reminder to reset parameters is displayed prior to returning to the Main Menu to help avoid this.
B A T T E R Y B A T T E R Y B A T T E R Y B A T T E R Y
Password required- This function is used to acclimate the battery gas gauge to a new battery when it is
installed. It should only be used with a discharged battery. Refer to the instructions for battery removal
and replacement under Disassembly and Reassembly Instructions in this manual for further details.
WARNING: This function should only be used on a discharged battery (6 volts or
less). Using it otherwise can adversely affect the accuracy of the gauge.
P R E S S U R E T R A N S D U C E R P R E S S U R E T R A N S D U C E R
P R E S S U R E T R A N S D U C E R P R E S S U R E T R A N S D U C E R
Password required- This function is used to calibrate the pressure transducer for accurate display of airway
pressure. Refer to the Pneumatic Calibration section later in this manual for detailed instructions.
F L O W C A L I B R A T I O N F L O W C A L I B R A T I O N F L O W C A L I B R A T I O N F L O W C A L I B R A T I O N
Password required- This allows for the calibration of the flow that is set by the Flow Knob on the front of
the Crossvent. Flows are set and the flow value displayed here is compared with the actual flow being
delivered as measured by a test instrument. Refer to the Pneumatic Calibration section later in this manual
for detailed instructions.
T O U C H S C R E E N ( C A L I B R A T O U C H S C R E E N ( C A L I B R A T I O N ) T O U C H S C R E E N ( C A L I B R A T O U C H S C R E E N ( C A L I B R A
This function is used to calibrate the x and y coordinates for the touchscreen. This is only necessary when a
new touchscreen is installed or this calibration is lost due to a failure in the memory of the Crossvent. To
calibrate the touchscreen, press TOUCHSCREEN in the Calibration menu. There will be displayed four
boxes in the corner of the display. Press the point where the corners of these boxes converge. When the
software registers the location that is pressed, these boxes will be replaced by a second group of boxes in the
opposite corner of the display. Press the center of these as before. When the second point of reference has
been registered, the calibration is complete and "CALIBRATED" is displayed. The unit then returns to the
Calibration menu.
Caution: Pressing anywhere other than the converging points of these boxes may
improperly calibrate the touchscreen.
K E Y S ( T O U C H S C R E E N T E K E Y S ( T O U C H S C R E E N T E S T ) K E Y S ( T O U C H S C R E E N T E K E Y S ( T O U C H S C R E E N T E
Displays the Key Test menu. It is used to determine that the touchscreen is operating properly. Starting
near the upper left corner of the display, press several points as you move diagonally down across the
display towards the CAL MENU key. The values for the x and y coordinates for each point pressed should
increase. If not, there is a problem with the touchscreen and it should be recalibrated. If calibrating does
not fix the problem, then it should be serviced. Press the CAL MENU key to end this test and return to the
CAL Menu.
D I S P L A Y ( L C D ) T E S T D I S P L A Y ( L C D ) T E S T D I S P L A Y ( L C D ) T E S T D I S P L A Y ( L C D ) T E S T
Tests all the pixels in the display by illuminating 16 boxes containing the 16 colors used by the Crossvent as
shown below. Press anywhere on the touchscreen to end the test and return to the Calibration menu.
T I O N ) T I O N ) T I O N )
S T ) S T ) S T )
BLACK BLUE
RED MAGNENTA
LIGHT
GRAY
BLUE
LIGHT LIGHT
RED MAGENTA
When the MAIN MENU key is
GREEN CYAN
LIGHT
BROWN
GRAY
LIGHT LIGHT
GREEN CYAN
YELLOW WHITE
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