BIO-MED DEVICES CROSSVENT-3+ Operation & Service Manual page 37

V. SETTINGS MENU AND TROUBLESHOOTING, cont'd.
PROBLEM
Ventilator does not start
CROSSVENT fails to
operate on battery
Battery fails to charge
properly
LOW BATTERY indicator
on
No exhaled tidal volume
reading
Incorrect tidal volume
reading
Incorrect O reading
2
No O readings
2
Low Gas Supply flashing
POSSIBLE CAUSE
1. Power cable not connected
and battery discharged
2. Low battery and no power in
electrical outlet
3. Blown fuse in plug-in power
supply
4. ON/OFF switch in the OFF
position
1. Low battery
2. Missing battery
3. Defective battery
1. Plug-in power supply not
connected
2. No voltage at outlet
3. Defective battery
4. Defective charger
Battery discharged
1. Pneumotach out of circuit
2. Problem with flow channel or
differential
1. Pressure limited
2. Incorrect flow calibration
3. Blocked or kinked
pneumotach tubes
4. Leak in patient circuit or
endotracheal
5. Inspiratory terminated by
Peak Pressure high alarm limit
1. O sensor not connected
2
2. Incorrect calibration
procedure
3. Faulty sensor cell
O sensor turned off
2
Gas supply to ventilator is less
than 31 PSI (214 kPa)
CORRECTIVE ACTION
1. Connect power cable; charge or
replace battery
2. Change outlet; charge or replace
battery
3. Replace power supply
4. Switch to ON
1. Charge battery
2. Insert and attach battery
3. Replace battery
1. Connect plug-in power supply
2. Connect to an active outlet
3. Replace battery
4. Replace charger
AC power must be restored and
battery charged
1. Reinstall the pneumotach
2. Service needed
1. Adjust pressure limit
2. Submit for service
3. Check pneumotach tubes and correct
blockage
4. Check and correct the patient circuit
and endotracheal tube for leaks
5. Adjust Peak Pressure high alarm
limit
1. Connect sensor
2. Review calibration procedure and
recalibrate
3. Replace cell
Turn O sensor on
2
Connect a gas supply that can provide
31 to 75 psi (214 – 517 kPa) pressure
at 132 lpm
31 31
31 31