Covidien Newport e360, Service Manual

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Troubleshooting
3-2 Service Manual
Ventilator cannot achieve or
maintain correct tidal volume,
plateau pressure, or baseline
pressure
Pressure relief valve regulator failure.
Perform the operational verification
procedure to diagnose the problem. Replace
any parts that may be defective.
Crossover solenoid valve failure.
Machine zero solenoid valve failure.
Pressure bar graph does not
show pressure rise
Machine zero solenoid valve failure.
Replace solenoid or analog PCB.
Analog board malfunction.
Internal battery does not charge Defective battery or battery charging
hardware. Replace internal battery or the DC-DC power
supply PCB.
Loss of battery power Battery missing, discharged, or
defective. Defective battery hardware. Recharge or replace battery. Replace DC-DC
power supply PCB.
Low supply gas alarm
Supply pressure is not within specified
range (30–90 psig). Ensure that both gas supplies have a pressure
of at least 30 psig.
Faulty gas supply. Verify gas sources are at correct pressures.
Faulty transducer on analog board. Replace analog board.
Pressure regulator not set correctly or
faulty. Calibrate or replace regulator.
Tube on transducer has become
disconnected. Verify all tubes are connected properly.
No flow or low flow from
inspiratory port during
inspiratory phase of a mandatory
breath Inlet regulator failure or PSOL valve
failure. Calibrate air and oxygen regulators; replace if
calibration is not successful.
Ventilator cannot cycle, audible
alarm on, and error message
displayed in message window Based on error message. Calibrate PSOL valves; replace if calibration is
not successful. Refer to
Table 3-2. ,” Device Alert Messages .”
Zero monitored exhaled flow
Flow sensor cable disconnected. Reconnect cable to exhalation flow sensor.
Verify that pins in cable connector are not
damaged.
Flow sensor defective. Replace flow sensor.
Defective exhalation flow sensor PCB. Replace exhalation flow sensor PCB.
Monitored values for exhaled
flows or volumes differ from
settings
Occluded or missing bacteria filter. Replace the bacteria filter.
Dirty exhalation flow sensor. Disassemble and clean the exhalation
module, replace the exhalation flow sensor.
Exhalation heater failure. Feel the bacteria filter. If it is not warm to the
touch, replace the exhalation heater.
Vent settings for Circuit Type humidity
setup are incorrect for humidifier
system in use. Correct Circuit Type selection in patient set-
up.
Table 3-1. Troubleshooting Guide (Continued)
Problem Potential cause Suggested action